10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

for the quarterly period ended:    March 31, 2018

☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

for the transition period from                  to                 .

Commission File Number: 000-10661

TriCo Bancshares

(Exact Name of Registrant as Specified in Its Charter)

CALIFORNIA	94-2792841
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification Number)

63 Constitution Drive

Chico, California 95973

(Address of Principal Executive Offices)(Zip Code)

(530) 898-0300

(Registrant’s Telephone Number, Including Area Code)

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    ☒  Yes     ☐  No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    ☒  Yes    ☐  No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, non-accelerated filer, a smaller reporting company, or an emerging growth company. See definitions of “accelerated filer”, “large accelerated filer”, “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☒	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    ☐  Yes    ☒  No

Indicate the number of shares outstanding for each of the issuer’s classes of common stock, as of the latest practical date:

Common stock, no par value: 22,969,792 shares outstanding as of May 4, 2018

TriCo Bancshares

FORM 10-Q

TABLE OF CONTENTS

	Page
Forward-Looking Statements	1
PART I – FINANCIAL INFORMATION	3
Item 1 – Financial Statements (Unaudited)	3
Item 2 – Management’s Discussion and Analysis of Financial Condition and Results of Operations	44
Item 3 – Quantitative and Qualitative Disclosures about Market Risk	62
Item 4 – Controls and Procedures	62
PART II – OTHER INFORMATION	63
Item 1 – Legal Proceedings	63
Item 1A – Risk Factors	63
Item 2 – Unregistered Sales of Equity Securities and Use of Proceeds	63
Item 6 – Exhibits	64
Signatures	65
Exhibits	66

FORWARD-LOOKING INFORMATION

Important Additional Information about the Merger

TriCo Bancshares (the “Company”) has filed a registration statement on Form S-4 with the SEC (filed on March 21, 2018 and subsequently amended on April 18, 2018), which includes a joint proxy statement of the Company and FNB Bancorp (“FNBB”) and a prospectus of the Company, and each party will file other documents with the SEC regarding the Agreement and Plan of Merger and Reorganization (the “Merger Agreement”) pursuant to which FNBB will be merged with and into the Company, with the Company as the surviving corporation (the “Merger”). The Merger is subject to a number of conditions, including regulatory and shareholder approval. A definitive joint proxy statement/prospectus will also be sent to the Company and FNBB shareholders seeking required shareholder approvals.

Before making any voting or investment decision, investors and security holders of the Company and FNBB are urged to carefully read the entire registration statement and joint proxy statement/prospectus, when they become available, as well as any amendments or supplements to these documents, because they will contain important information about the proposed transaction.

The documents filed by the Company and FNBB with the SEC may be obtained free of charge at the SEC’s website at www.sec.gov. In addition, the documents filed by the Company may be obtained free of charge at the Company’s website at https://www.tcbk.com/investor-relations and the documents filed by FNBB may be obtained free of charge at FNBB’s website at https://www.fnbnorcal.com/investor-relations-overview. Alternatively, these documents, when available, can be obtained free of charge from the Company upon written request to TriCo Bancshares, Attention: Craig Compton, Secretary, 63 Constitution Drive, Chico, CA 95973 or by calling (800) 922-8742 or from FNBB upon written request to FNB Bancorp, 975 El Camino Real, South San Francisco, CA, 94080, Attention: Corporate Secretary, or by calling (650) 588-6800.

This communication shall not constitute an offer to sell or the solicitation of an offer to buy securities nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such jurisdiction. This communication is also not a solicitation of any vote in any jurisdiction pursuant to the proposed transactions or otherwise. No offer of securities or solicitation will be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended. The communication is not a substitute for the joint proxy statement/prospectus that the Company and FNBB will file with the SEC.

1

Cautionary Statements Regarding Forward-Looking Information

This report on Form 10-Q contains forward-looking statements about TriCo Bancshares (the “Company”) that are subject to the protection of the safe harbor provisions contained in the Private Securities Litigation Reform Act of 1995. These forward-looking statements are based on the current knowledge and belief of the Company’s management (“Management”) and include information concerning the Company’s possible or assumed future financial condition and results of operations. When you see any of the words “believes”, “expects”, “anticipates”, “estimates”, or similar expressions, it may mean the Company is making forward-looking statements. A number of factors, some of which are beyond the Company’s ability to predict or control, could cause future results to differ materially from those contemplated. The reader is directed to the Company’s annual report on Form 10-K for the year ended December 31, 2017 and Part II, Item 1A of this report for further discussion of factors which could affect the Company’s business and cause actual results to differ materially from those suggested by any forward-looking statement made in this report. Such Form 10-K and this report should be read in their entirety to put any forward-looking statements in context and to gain a more complete understanding of the risks and uncertainties involved in the Company’s business. Any forward-looking statement may turn out to be wrong and cannot be guaranteed. The Company does not intend to update any forward-looking statement after the date of this report.

Statements concerning the potential merger of the Company and FNBB may also be forward-looking statements. Please refer to each of the Company’s and FNBB’s Annual Report on Form 10-K for the year ended December 31, 2017, as well as their other filings with the SEC, for a more detailed discussion of risks, uncertainties and factors that could cause actual results to differ from those discussed in the forward-looking statements.

In addition to factors previously disclosed in reports filed by the Company and FNBB with the SEC, risks and uncertainties for the Company, FNBB and the combined company include, but are not limited to: the possibility that any of the anticipated benefits of the proposed merger will not be realized or will not be realized within the expected time period; the risk that integration of FNBB’s operations with those of the Company will be materially delayed or will be more costly or difficult than expected; the inability to close the merger in a timely manner; the inability to complete the merger due to the failure of the Company’s or FNBB’s shareholders to adopt the merger agreement; diversion of management’s attention from ongoing business operations and opportunities; the failure to satisfy other conditions to completion of the merger, including receipt of required regulatory and other approvals; the failure of the proposed merger to close for any other reason; the challenges of integrating and retaining key employees; the effect of the announcement of the merger on the Company’s, FNBB’s or the combined company’s respective customer relationships and operating results; the possibility that the merger may be more expensive to complete than anticipated, including as a result of unexpected factors or events; and general competitive, economic, political and market conditions and fluctuations. All forward-looking statements included in this filing are made as of the date hereof and are based on information available at the time of the filing. Except as required by law, neither the Company nor FNBB assumes any obligation to update any forward-looking statement.

2

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements (unaudited)

TRICO BANCSHARES

CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands, except share data; unaudited)

	At March 31, 2018			At December 31, 2017
Assets:
Cash and due from banks	$	87,138		$	105,968
Cash at Federal Reserve and other banks		95,841			99,460
Cash and cash equivalents		182,979			205,428
Investment securities:
Marketable equity securities		2,890			2,938
Available for sale debt securities		735,895			727,945
Held to maturity debt securities		496,035			514,844
Restricted equity securities		16,956			16,956
Loans held for sale		2,149			4,616
Loans		3,069,733			3,015,165
Allowance for loan losses		(29,973	)		(30,323	)
Total loans, net		3,039,760			2,984,842
Foreclosed assets, net		1,564			3,226
Premises and equipment, net		58,558			57,742
Cash value of life insurance		98,391			97,783
Accrued interest receivable		12,407			13,772
Goodwill		64,311			64,311
Other intangible assets, net		4,835			5,174
Mortgage servicing rights		6,953			6,687
Other assets		56,274			55,051
Total assets	$	4,779,957		$	4,761,315
Liabilities and Shareholders’ Equity:
Liabilities:
Deposits:
Noninterest-bearing demand	$	1,359,996		$	1,368,218
Interest-bearing		2,724,408			2,640,913
Total deposits		4,084,404			4,009,131
Accrued interest payable		958			930
Reserve for unfunded commitments		3,864			3,164
Other liabilities		63,529			63,258
Other borrowings		65,041			122,166
Junior subordinated debt		56,905			56,858
Total liabilities		4,274,701			4,255,507
Commitments and contingencies (Note 18)
Shareholders’ equity:
Preferred stock, no par value: 1,000,000 shares authorized, zero issued and outstanding at March 31, 2018 and December 31, 2017		—			—
Common stock, no par value: 50,000,000 shares authorized; issued and outstanding:
22,956,323 at March 31, 2018		256,226
22,955,963 at December 31, 2017					255,836
Retained earnings		266,235			255,200
Accumulated other comprehensive loss, net of tax		(17,205	)		(5,228	)
Total shareholders’ equity		505,256			505,808
Total liabilities and shareholders’ equity	$	4,779,957		$	4,761,315

See accompanying notes to unaudited condensed consolidated financial statements.

3

TRICO BANCSHARES

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

(In thousands, except per share data; unaudited)

	Three months ended March 31,
	2018			2017
Interest and dividend income:
Loans, including fees	$	38,049		$	34,914
Investments:
Taxable securities		7,322			6,703
Tax exempt securities		1,041			1,041
Dividends		336			391
Interest bearing cash at
Federal Reserve and other banks		373			435
Total interest and dividend income		47,121			43,484
Interest expense:
Deposits		1,096			894
Other borrowings		342			2
Junior subordinated debt		697			595
Total interest expense		2,135			1,491
Net interest income		44,986			41,993
Benefit from reversal of provision for loan losses		(236	)		(1,557	)
Net interest income after benefit from reversal of provision for loan losses		45,222			43,550
Noninterest income:
Service charges and fees		9,356			8,907
Gain on sale of loans		626			910
Commissions on sale of non-deposit investment products		876			607
Increase in cash value of life insurance		608			685
Other		824			594
Total noninterest income		12,290			11,703
Noninterest expense:
Salaries and related benefits		21,652			20,893
Other		16,510			14,929
Total noninterest expense		38,162			35,822
Income before income taxes		19,350			19,431
Provision for income taxes		5,440			7,352
Net income	$	13,910		$	12,079
Earnings per share:
Basic	$	0.61		$	0.53
Diluted	$	0.60		$	0.52

See accompanying notes to unaudited condensed consolidated financial statements.

4

TRICO BANCSHARES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(In thousands; unaudited)

	Three months ended
	March 31,
	2018			2017
Net income	$	13,910		$	12,079
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on available for sale securities arising during the period		(11,026	)		457
Change in minimum pension liability		80			54
Other comprehensive income (loss)		(10,946	)		511
Comprehensive income	$	2,964		$	12,590

See accompanying notes to unaudited condensed consolidated financial statements.

TRICO BANCSHARES

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY

(In thousands, except share and per share data; unaudited)

										Accumulated
	Shares of									Other
	Common			Common			Retained			Comprehensive
	Stock			Stock			Earnings			Income (loss)			Total
Balance at December 31, 2016		22,867,802		$	252,820		$	232,440		$	(7,913	)	$	477,347
Net income								12,079						12,079
Other comprehensive income											511			511
Stock option vesting					88									88
RSU vesting					204									204
PSU vesting					89									89
Stock options exercised		21,450			435									435
RSUs released		304
Repurchase of common stock		(16,251	)		(180	)		(424	)					(604	)
Dividends paid ($ 0.15 per share)								(3,431	)					(3,431	)
Balance at March 31, 2017		22,873,305		$	253,456		$	240,664		$	(7,402	)	$	486,718
Balance at December 31, 2017		22,955,963		$	255,836		$	255,200		$	(5,228	)	$	505,808
Net income								13,910						13,910
Adoption ASU 2016-01								(62	)		62			—
Adoption ASU 2018-02								1,093			(1,093	)		—
Other comprehensive loss											(10,946	)		(10,946	)
Stock option vesting					37									37
RSU vesting					238									238
PSU vesting					116									116
RSUs released		494
Repurchase of common stock		(134	)		(1	)		(3	)					(4	)
Dividends paid ($ 0.17 per share)								(3,903	)					(3,903	)
Balance at March 31, 2018		22,956,323		$	256,226		$	266,235		$	(17,205	)	$	505,256

See accompanying notes to unaudited condensed consolidated financial statements.

5

TRICO BANCSHARES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands; unaudited)

	For the three months ended March 31,
	2018			2017
Operating activities:
Net income	$	13,910		$	12,079
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of premises and equipment, and amortization		1,613			1,604
Amortization of intangible assets		339			359
Reversal of provision for loan losses		(236	)		(1,557	)
Amortization of investment securities premium, net		700			798
Originations of loans for resale		(20,332	)		(34,317	)
Proceeds from sale of loans originated for resale		23,270			36,771
Gain on sale of loans		(626	)		(910	)
Change in market value of mortgage servicing rights		(111	)		13
Provision for (reversal of) losses on foreclosed assets		90			(66	)
Gain on sale of foreclosed assets		(371	)		(118	)
Loss on disposal of fixed assets		13			—
Gain on sale of premises held for sale		—			(3	)
Increase in cash value of life insurance		(608	)		(685	)
Gain on life insurance death benefit		—			(107	)
Equity compensation vesting expense		391			381
Loss on marketable equity securities		48			—
Change in:
Reserve for unfunded commitments		700			15
Interest receivable		1,365			791
Interest payable		28			(48	)
Other assets and liabilities, net		3,531			4,444
Net cash from operating activities		23,714			19,444
Investing activities:
Proceeds from maturities of securities available for sale		15,643			14,069
Proceeds from maturities of securities held to maturity		18,535			22,074
Purchases of securities available for sale		(39,647	)		(35,241	)
Loan origination and principal collections, net		(54,682	)		(1,613	)
Proceeds from sale of other real estate owned		1,943			726
Proceeds from sale of premises held for sale		—			3,338
Purchases of premises and equipment		(2,200	)		(2,413	)
Life insurance proceeds		—			282
Net cash provided by investing activities		(60,408	)		1,222
Financing activities:
Net increase in deposits		75,273			3,324
Net change in other borrowings		(57,125	)		(2,296	)
Repurchase of common stock		—			(169	)
Dividends paid		(3,903	)		(3,431	)
Net cash used by financing activities		14,245			(2,572	)
Net change in cash and cash equivalents		(22,449	)		18,094
Cash and cash equivalents and beginning of year		205,428			305,612
Cash and cash equivalents at end of year	$	182,979		$	323,706
Supplemental disclosure of noncash activities:
Unrealized (loss) gain on securities available for sale	$	(15,628	)	$	787
Loans transferred to foreclosed assets		—			85
Deferred gain on sale of premises held for sale		—			438
Market value of shares tendered in-lieu of cash to pay for exercise of options and/or related taxes		4			604
Supplemental disclosure of cash flow activity:
Cash paid for interest expense		2,107			1,539
Cash paid for income taxes		—			—

See accompanying notes to unaudited condensed consolidated financial statements.

6

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Note 1 – Summary of Significant Accounting Policies

Description of Business and Basis of Presentation

TriCo Bancshares (the “Company” or “we”) is a California corporation organized to act as a bank holding company for Tri Counties Bank (the “Bank”). The Company and the Bank are headquartered in Chico, California. The Bank is a California-chartered bank that is engaged in the general commercial banking business in 26 California counties. The Bank operates from 57 traditional branches and 9 in-store branches. The Company has five capital subsidiary business trusts (collectively, the “Capital Trusts”) that issued trust preferred securities, including two organized by TriCo and three acquired with the acquisition of North Valley Bancorp. See Note 17 – Junior Subordinated Debt.

The consolidated financial statements are prepared in accordance with accounting policies generally accepted in the United States of America and general practices in the banking industry. The consolidated financial statements include the accounts of the Company. All inter-company accounts and transactions have been eliminated in consolidation. For financial reporting purposes, the Company’s investments in the Capital Trusts of $1,703,000 are accounted for under the equity method and, accordingly, are not consolidated and are included in other assets on the consolidated balance sheet. The subordinated debentures issued and guaranteed by the Company and held by the Capital Trusts are reflected as debt on the Company’s consolidated balance sheet.

Use of Estimates in the Preparation of Financial Statements

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires Management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

Significant Group Concentration of Credit Risk

The Company grants agribusiness, commercial, consumer, and residential loans to customers located throughout the northern San Joaquin Valley, the Sacramento Valley and northern mountain regions of California. The Company has a diversified loan portfolio within the business segments located in this geographical area. The Company currently classifies all its operation into one business segment that it denotes as community banking.

Cash and Cash Equivalents

For purposes of the consolidated statements of cash flows, cash and cash equivalents include cash on hand, amounts due from banks, and federal funds sold. Net cash flows are reported for loan and deposit transactions and other borrowings.

Marketable Equity Securities

As of December 31, 2017, marketable equity securities with a fair value of $2,938,000 were recorded within investment securities available for sale on the consolidated balance sheets with changes in the fair value recorded through other comprehensive income and accumulated other comprehensive income (loss). As of January 1, 2018, the Company adopted Accounting Standard Update (“ASU”) 2016-01 using a prospective transition approach and reclassified its marketable equity securities from investments available for sale into a separate component of investment securities. The ASU requires marketable equity securities to be reported at fair value with changes in the fair value recorded through earnings. As of January 1, 2018, unrealized losses of $62,000 were reclassified from accumulated other comprehensive loss to retained earnings and the deferred tax asset was reduced by $18,000. During the three months ended March 31, 2018, the Company recognized $48,000 of unrealized losses in the condensed consolidated statements of income.

Debt Securities

The Company classifies its debt securities into one of three categories: trading, available for sale or held to maturity. Trading securities are bought and held principally for the purpose of selling in the near term. Held to maturity securities are those securities which the Company has the ability and intent to hold until maturity. These securities are carried at cost adjusted for amortization of premium and accretion of discount, computed by the effective interest method over their contractual lives. All other securities not included in trading or held to maturity are classified as available for sale. Available for sale securities are recorded at fair value. Unrealized gains and losses, net of the related tax effect, on available for sale securities are reported as a separate component of other accumulated comprehensive income in shareholders’ equity until realized. Premiums and discounts are amortized or accreted over the life of the related investment security as an adjustment to yield using the effective interest method. Dividend and interest income are recognized when earned. Realized gains and losses are derived from the amortized cost of the security sold. During the three months ended March 31, 2018 and throughout 2017, the Company did not have any debt securities classified as trading.

The Company assesses other-than-temporary impairment (“OTTI”) based on whether it intends to sell a security or if it is likely that the Company would be required to sell the security before recovery of the amortized cost basis of the investment, which may be maturity. For debt securities, if we intend to sell the security or it is more likely than not that we will be required to sell the security before recovering its cost basis, the entire impairment loss would be recognized in earnings as an OTTI. If we do not intend to sell the security and it is not likely that we will be required to sell the security but we do not expect to recover the entire amortized cost basis of the security, only the portion of the impairment loss representing credit losses would be recognized in earnings. The credit loss on a security is measured as the difference between the amortized cost basis and the present value of the cash flows expected to be collected. Projected cash flows are discounted by the original or current effective interest rate depending on the nature of the security being measured for potential OTTI. The remaining impairment related to all other factors, the difference between the present value of the cash flows expected to be collected and fair value, is recognized as a charge to other comprehensive income (“OCI”). Impairment losses related to all other factors are presented as separate categories within OCI. The accretion of the amount recorded in OCI increases the carrying value of the investment and does not affect earnings. If there is an indication of additional credit losses the security is re-evaluated according to the procedures described above. No OTTI losses were recognized during the three months ended March 31, 2018 or the year ended December 31, 2017.

7

Restricted Equity Securities

Restricted equity securities represent the Company’s investment in the stock of the Federal Home Loan Bank of San Francisco (“FHLB”) and are carried at par value, which reasonably approximates its fair value. While technically these are considered equity securities, there is no market for the FHLB stock. Therefore, the shares are considered as restricted investment securities. Management periodically evaluates FHLB stock for other-than-temporary impairment. Management’s determination of whether these investments are impaired is based on its assessment of the ultimate recoverability of cost rather than by recognizing temporary declines in value. The determination of whether a decline affects the ultimate recoverability of cost is influenced by criteria such as (1) the significance of any decline in net assets of the FHLB as compared to the capital stock amount for the FHLB and the length of time this situation has persisted, (2) commitments by the FHLB to make payments required by law or regulation and the level of such payments in relation to the operating performance of the FHLB, (3) the impact of legislative and regulatory changes on institutions and, accordingly, the customer base of the FHLB, and (4) the liquidity position of the FHLB.

As a member of the FHLB system, the Bank is required to maintain a minimum level of investment in FHLB stock based on specific percentages of its outstanding mortgages, total assets, or FHLB advances. The Bank may request redemption at par value of any stock in excess of the minimum required investment. Stock redemptions are at the discretion of the FHLB.

Loans Held for Sale

Loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or fair value, as determined by aggregate outstanding commitments from investors of current investor yield requirements. Net unrealized losses are recognized through a valuation allowance by charges to noninterest income.

Mortgage loans held for sale are generally sold with the mortgage servicing rights retained by the Company. Gains or losses on the sale of loans that are held for sale are recognized at the time of the sale and determined by the difference between net sale proceeds and the net book value of the loans less the estimated fair value of any retained mortgage servicing rights.

Loans and Allowance for Loan Losses

Loans originated by the Company, i.e., not purchased or acquired in a business combination, are referred to as originated loans. Originated loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal amount outstanding, net of deferred loan fees and costs. Loan origination and commitment fees and certain direct loan origination costs are deferred, and the net amount is amortized as an adjustment of the related loan’s yield over the actual life of the loan. Originated loans on which the accrual of interest has been discontinued are designated as nonaccrual loans.

Originated loans are placed in nonaccrual status when reasonable doubt exists as to the full, timely collection of interest or principal, or a loan becomes contractually past due by 90 days or more with respect to interest or principal and is not well secured and in the process of collection. When an originated loan is placed on nonaccrual status, all interest previously accrued but not collected is reversed. Income on such loans is then recognized only to the extent that cash is received and where the future collection of principal is probable. Interest accruals are resumed on such loans only when they are brought fully current with respect to interest and principal and when, in the judgment of Management, the loan is estimated to be fully collectible as to both principal and interest.

An allowance for loan losses for originated loans is established through a provision for loan losses charged to expense. The allowance is maintained at a level which, in Management’s judgment, is adequate to absorb probable incurred credit losses inherent in the loan portfolio as of the balance sheet date. Originated loans and deposit related overdrafts are charged against the allowance for loan losses when Management believes that the collectability of the principal is unlikely or, with respect to consumer installment loans, according to an established delinquency schedule. The allowance is an amount that Management believes will be adequate to absorb probable incurred losses inherent in existing loans, based on evaluations of the collectability, impairment and prior loss experience of loans. The evaluations take into consideration such factors as changes in the nature and size of the portfolio, overall portfolio quality, loan concentrations, specific problem loans, and current economic conditions that may affect the borrower’s ability to pay. The Company defines an originated loan as impaired when it is probable the Company will be unable to collect all amounts due according to the original contractual terms of the loan agreement. Impaired originated loans are measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate. As a practical expedient, impairment may be measured based on the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. When the measure of the impaired loan is less than the recorded investment in the loan, the impairment is recorded through a specific reserve allocation within the allowance for loan losses.    

In situations related to originated loans where, for economic or legal reasons related to a borrower’s financial difficulties, the Company grants a concession for other than an insignificant period of time to the borrower that the Company would not otherwise consider, the related loan is classified as a troubled debt restructuring (TDR). The Company strives to identify borrowers in financial difficulty early and work with them to modify to more affordable terms before their loan reaches nonaccrual status. These modified terms may include rate reductions, principal forgiveness, payment forbearance and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of the collateral. In cases where the Company grants the borrower new terms that result in the loan being classified as a TDR, the Company measures any impairment on the restructuring as noted above for impaired loans. TDR loans are classified as impaired until they are fully paid off or charged off. Loans that are in nonaccrual status at the time they become TDR loans, remain in nonaccrual status until the borrower demonstrates a sustained period of performance which the Company generally believes to be six consecutive months of payments, or equivalent. Otherwise, TDR loans are subject to the same nonaccrual and charge-off policies as noted above with respect to their restructured principal balance.

Credit risk is inherent in the business of lending. As a result, the Company maintains an allowance for loan losses to absorb probable incurred losses inherent in the Company’s originated loan portfolio. This is maintained through periodic charges to earnings. These charges are included in the Consolidated Statements of Income as provision for loan losses. All specifically identifiable and quantifiable losses are immediately charged off against the allowance. However, for a variety of reasons, not all losses are immediately known to the Company and, of those that are known, the full extent of the loss may not be quantifiable at that point in time. The balance of the Company’s allowance for originated loan losses is meant to be an estimate of these probable incurred losses inherent in the portfolio.

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The Company formally assesses the adequacy of the allowance for originated loan losses on a quarterly basis. Determination of the adequacy is based on ongoing assessments of the probable risk in the outstanding originated loan portfolio, and to a lesser extent the Company’s originated loan commitments. These assessments include the periodic re-grading of credits based on changes in their individual credit characteristics including delinquency, seasoning, recent financial performance of the borrower, economic factors, changes in the interest rate environment, growth of the portfolio as a whole or by segment, and other factors as warranted. Loans are initially graded when originated. They are re-graded as they are renewed, when there is a new loan to the same borrower, when identified facts demonstrate heightened risk of nonpayment, or if they become delinquent. Re-grading of larger problem loans occurs at least quarterly. Confirmation of the quality of the grading process is obtained by independent credit reviews conducted by consultants specifically hired for this purpose and by various bank regulatory agencies.

The Company’s method for assessing the appropriateness of the allowance for originated loan losses includes specific allowances for impaired originated loans, formula allowance factors for pools of credits, and allowances for changing environmental factors (e.g., interest rates, growth, economic conditions, etc.). Allowance factors for loan pools were based on historical loss experience by product type and prior risk rating.

Loans purchased or acquired in a business combination are referred to as acquired loans. Acquired loans are valued as of the acquisition date in accordance with Financial Accounting Standards Board Accounting Standards Codification (“FASB ASC”) Topic 805, Business Combinations. Loans acquired with evidence of credit deterioration since origination for which it is probable that all contractually required payments will not be collected are referred to as purchased credit impaired (PCI) loans. PCI loans are accounted for under FASB ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality. Under FASB ASC Topic 805 and FASB ASC Topic 310-30, PCI loans are recorded at fair value at acquisition date, factoring in credit losses expected to be incurred over the life of the loan. Accordingly, an allowance for loan losses is not carried over or recorded as of the acquisition date. Fair value is defined as the present value of the future estimated principal and interest payments of the loan, with the discount rate used in the present value calculation representing the estimated effective yield of the loan. Default rates, loss severity, and prepayment speed assumptions are periodically reassessed and our estimate of future payments is adjusted accordingly. The difference between contractual future payments and estimated future payments is referred to as the nonaccretable difference. The difference between estimated future payments and the present value of the estimated future payments is referred to as the accretable yield. The accretable yield represents the amount that is expected to be recorded as interest income over the remaining life of the loan. If after acquisition, the Company determines that the estimated future cash flows of a PCI loan are expected to be more than originally estimated, an increase in the discount rate (effective yield) would be made such that the newly increased accretable yield would be recognized, on a level yield basis, over the remaining estimated life of the loan. If, thereafter, the Company determines that the estimated future cash flows of a PCI loan are expected to be less than previously estimated, an allowance for loan loss would be established through a provision for loan losses charged to expense to decrease the present value to the required level. If the estimated cash flows improve after an allowance has been established for a loan, the allowance may be partially or fully reversed depending on the improvement in the estimated cash flows. Only after the allowance has been fully reversed may the discount rate be increased. PCI loans are put on nonaccrual status when cash flows cannot be reasonably estimated. PCI loans on nonaccrual status are accounted for using the cost recovery method or cash basis method of income recognition. The Company refers to PCI loans on nonaccrual status that are accounted for using the cash basis method of income recognition as “PCI – cash basis” loans; and the Company refers to all other PCI loans as “PCI – other” loans PCI loans are charged off when evidence suggests cash flows are not recoverable. Foreclosed assets from PCI loans are recorded in foreclosed assets at fair value with the fair value at time of foreclosure representing cash flow from the loan. ASC 310-30 allows PCI loans with similar risk characteristics and acquisition time frame to be “pooled” and have their cash flows aggregated as if they were one loan. The Company elected to use the “pooled” method of ASC 310-30 for PCI – other loans in the acquisition of certain assets and liabilities of Granite Community Bank, N.A. (“Granite”) during 2010 and Citizens Bank of Northern California (“Citizens”) during 2011.

Acquired loans that are not PCI loans are referred to as purchased not credit impaired (PNCI) loans. PNCI loans are accounted for under FASB ASC Topic 310-20, Receivables – Nonrefundable Fees and Other Costs, in which interest income is accrued on a level-yield basis for performing loans. For income recognition purposes, this method assumes that all contractual cash flows will be collected, and no allowance for loan losses is established at the time of acquisition. Post-acquisition date, an allowance for loan losses may need to be established for acquired loans through a provision charged to earnings for credit losses incurred subsequent to acquisition. Under ASC 310-20, the loss would be measured based on the probable shortfall in relation to the contractual note requirements, consistent with our allowance for loan loss policy for similar loans.

Throughout these financial statements, and in particular in Note 4 and Note 5, when we refer to “Loans” or “Allowance for loan losses” we mean all categories of loans, including Originated, PNCI, PCI – cash basis, and PCI—other. When we are not referring to all categories of loans, we will indicate which we are referring to – Originated, PNCI, PCI – cash basis, or PCI—other.

When referring to PNCI and PCI loans we use the terms “nonaccretable difference”, “accretable yield”, or “purchase discount”. Nonaccretable difference is the difference between undiscounted contractual cash flows due and undiscounted cash flows we expect to collect, or put another way, it is the undiscounted contractual cash flows we do not expect to collect. Accretable yield is the difference between undiscounted cash flows we expect to collect and the value at which we have recorded the loan on our financial statements. On the date of acquisition, all purchased loans are recorded on our consolidated financial statements at estimated fair value. Purchase discount is the difference between the estimated fair value of loans on the date of acquisition and the principal amount owed by the borrower, net of charge offs, on the date of acquisition. We may also refer to “discounts to principal balance of loans owed, net of charge-offs”. Discounts to principal balance of loans owed, net of charge-offs is the difference between principal balance of loans owed, net of charge-offs, and loans as recorded on our financial statements. Discounts to principal balance of loans owed, net of charge-offs arise from purchase discounts, and equal the purchase discount on the acquisition date.

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Loans are also categorized as “covered” or “noncovered”. Covered loans refer to loans covered by a Federal Deposit Insurance Corporation (“FDIC”) loss sharing agreement. Noncovered loans refer to loans not covered by a FDIC loss sharing agreement. On May 9, 2017, the Company and the FDIC terminated their loss sharing agreements.

Foreclosed Assets

Foreclosed assets include assets acquired through, or in lieu of, loan foreclosure. Foreclosed assets are held for sale and are initially recorded at fair value less estimated costs to sell at the date of foreclosure, establishing a new cost basis. Physical possession of residential real estate property collateralizing a consumer mortgage loan occurs when legal title is obtained upon completion of foreclosure or when the borrower conveys all interest in the property to satisfy the loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Any write-downs based on the asset’s fair value less costs to sell at the date of acquisition are charged to the allowance for loan and lease losses. Any recoveries based on the asset’s fair value less estimated costs to sell in excess of the recorded value of the loan at the date of acquisition are recorded to the allowance for loan and lease losses. These assets are subsequently accounted for at lower of cost or fair value less estimated costs to sell. If fair value declines subsequent to foreclosure, a valuation allowance is recorded through expense. Operating costs after acquisition are expensed. Revenue and expenses from operations and changes in the valuation allowance are included in other noninterest expense. Gain or loss on sale of foreclosed assets is included in noninterest income. Foreclosed assets that are not subject to a FDIC loss-share agreement are referred to as noncovered foreclosed assets.

Foreclosed assets acquired through FDIC-assisted acquisitions that are subject to a FDIC loss-share agreement, and all assets acquired via foreclosure of covered loans are referred to as covered foreclosed assets. Covered foreclosed assets are reported exclusive of expected reimbursement cash flows from the FDIC. Foreclosed covered loan collateral is transferred into covered foreclosed assets at the loan’s carrying value, inclusive of the acquisition date fair value discount.

Covered foreclosed assets are initially recorded at estimated fair value less estimated costs to sell on the acquisition date based on similar market comparable valuations less estimated selling costs. Any subsequent valuation adjustments due to declines in fair value will be charged to noninterest expense, and will be mostly offset by noninterest income representing the corresponding increase to the FDIC indemnification asset for the offsetting loss reimbursement amount. Any recoveries of previous valuation adjustments will be credited to noninterest expense with a corresponding charge to noninterest income for the portion of the recovery that is due to the FDIC.

Premises and Equipment

Land is carried at cost. Land improvements, buildings and equipment, including those acquired under capital lease, are stated at cost less accumulated depreciation and amortization. Depreciation and amortization expenses are computed using the straight-line method over the shorter of the estimated useful lives of the related assets or lease terms. Asset lives range from 3-10 years for furniture and equipment and 15-40 years for land improvements and buildings.

Goodwill and Other Intangible Assets

Goodwill represents the excess of costs over fair value of net assets of businesses acquired. Goodwill and other intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are not amortized, but instead tested for impairment at least annually. Intangible assets with estimable useful lives are amortized over their respective estimated useful lives to their estimated residual values, and reviewed for impairment.

The Company has an identifiable intangible asset consisting of core deposit intangibles (CDI). CDI are amortized over their respective estimated useful lives, and reviewed for impairment.

Impairment of Long-Lived Assets and Goodwill

Long-lived assets, such as premises and equipment, and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposed group classified as held for sale would be presented separately in the appropriate asset and liability sections of the consolidated balance sheet.

As of December 31 of each year, goodwill is tested for impairment, and is tested for impairment more frequently if events and circumstances indicate that the asset might be impaired. An impairment loss is recognized to the extent that the carrying amount exceeds the asset’s fair value. This determination is made at the reporting unit level. The Company may choose to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, the Company determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then goodwill is deemed not to be impaired. However, if the Company concludes otherwise, or if the Company elected not to first assess qualitative factors, then the Company performs the first step of a two-step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit. Second, if the carrying amount of the reporting unit exceeds its fair value, an impairment loss is recognized for any excess of the carrying amount of the reporting unit’s goodwill over the implied fair value of that goodwill. The implied fair value of goodwill is determined by allocating the fair value of the reporting unit in a manner similar to a purchase price allocation. The residual fair value after this allocation is the implied fair value of the reporting unit goodwill. Currently, and historically, the Company is comprised of only one reporting unit that operates within the business segment it has identified as “community banking”. Goodwill was not impaired as of December 31, 2017 because the fair value of the reporting unit exceeded its carrying value.

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Mortgage Servicing Rights

Mortgage servicing rights (MSR) represent the Company’s right to a future stream of cash flows based upon the contractual servicing fee associated with servicing mortgage loans. Our MSR arise from residential and commercial mortgage loans that we originate and sell, but retain the right to service the loans. The net gain from the retention of the servicing right is included in gain on sale of loans in noninterest income when the loan is sold. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, the custodial earnings rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses. Servicing fees are recorded in noninterest income when earned.

The Company accounts for MSR at fair value. The determination of fair value of our MSR requires management judgment because they are not actively traded. The determination of fair value for MSR requires valuation processes which combine the use of discounted cash flow models and extensive analysis of current market data to arrive at an estimate of fair value. The cash flow and prepayment assumptions used in our discounted cash flow model are based on empirical data drawn from the historical performance of our MSR, which we believe are consistent with assumptions used by market participants valuing similar MSR, and from data obtained on the performance of similar MSR. The key assumptions used in the valuation of MSR include mortgage prepayment speeds and the discount rate. These variables can, and generally will, change from quarter to quarter as market conditions and projected interest rates change. The key risks inherent with MSR are prepayment speed and changes in interest rates. The Company uses an independent third party to determine fair value of MSR.

Indemnification Asset/Liability

The Company accounts for amounts receivable or payable under its loss-share agreements entered into with the FDIC in connection with its purchase and assumption of certain assets and liabilities of Granite as indemnification assets in accordance with FASB ASC Topic 805, Business Combinations. FDIC indemnification assets are initially recorded at fair value, based on the discounted value of expected future cash flows under the loss-share agreements. The difference between the fair value and the undiscounted cash flows the Company expects to collect from or pay to the FDIC will be accreted into noninterest income over the life of the FDIC indemnification asset. FDIC indemnification assets are reviewed quarterly and adjusted for any changes in expected cash flows based on recent performance and expectations for future performance of the covered portfolios. These adjustments are measured on the same basis as the related covered loans and covered other real estate owned. Any increases in cash flow of the covered assets over those expected will reduce the FDIC indemnification asset and any decreases in cash flow of the covered assets under those expected will increase the FDIC indemnification asset. Increases and decreases to the FDIC indemnification asset are recorded as adjustments to noninterest income.

Reserve for Unfunded Commitments

The reserve for unfunded commitments is established through a provision for losses – unfunded commitments charged to noninterest expense. The reserve for unfunded commitments is an amount that Management believes will be adequate to absorb probable losses inherent in existing commitments, including unused portions of revolving lines of credits and other loans, standby letters of credits, and unused deposit account overdraft privilege. The reserve for unfunded commitments is based on evaluations of the collectability, and prior loss experience of unfunded commitments. The evaluations take into consideration such factors as changes in the nature and size of the loan portfolio, overall loan portfolio quality, loan concentrations, specific problem loans and related unfunded commitments, and current economic conditions that may affect the borrower’s or depositor’s ability to pay.

Low Income Housing Tax Credits

The Company accounts for low income housing tax credits and the related qualified affordable housing projects using the proportional amortization method. Under the proportional amortization method, the Company amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense (benefit). Upon entering into a qualified affordable housing project, the Company records, in other liabilities, the entire amount that it has agreed to invest in the project, and an equal amount, in other assets, representing its investment in the project. As the Company disburses cash to satisfy its investment obligation, other liabilities are reduced. Over time, as the tax credits and other tax benefits of the project are realized by the Company, the investment recorded in other assets is reduced using the proportional amortization method.    

Revenue Recognition

The Company records revenue from contracts with customers in accordance with Accounting Standards Codification Topic 606, “Revenue from Contracts with Customers” (“Topic 606”). Under Topic 606, the Company must identify the contract with a customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract, and recognize revenue when (or as) the Company satisfies a performance obligation. Significant revenue has not been recognized in the current reporting period that results from performance obligations satisfied in previous periods.

Most of our revenue-generating transactions are not subject to ASC 606, including revenue generated from financial instruments, such as our loans and investment securities. In addition, certain noninterest income streams such as fees associated with mortgage servicing rights, financial guarantees, derivatives, and certain credit card fees are also not in scope of the new guidance. The Company’s noninterest revenue streams are largely based on transactional activity, or standard month-end revenue accruals such as asset management fees based on month-end market values. Consideration is often received immediately or shortly after the Company satisfies its performance obligation and revenue is recognized. The Company does not typically enter into long-term revenue contracts with customers, and therefore, does not experience significant contract balances. As of March 31, 2018 and December 31, 2017, the Company did not have any significant contract balances. The Company has evaluated the nature of its revenue streams and determined that further disaggregation of revenue into more granular categories beyond what is presented in the Note 21 was not necessary.

Income Taxes

The Company’s accounting for income taxes is based on an asset and liability approach. The Company recognizes the amount of taxes payable or refundable for the current year, and deferred tax assets and liabilities for the future tax consequences that have been recognized in its financial statements or tax returns. The measurement of tax assets and liabilities is based on the provisions of enacted tax laws. A valuation allowance, if needed, reduces deferred tax assets to the expected amount most likely to be realized. Realization of deferred tax

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assets is dependent upon the generation of a sufficient level of future taxable income and recoverable taxes paid in prior years. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets will be realized. Interest and/or penalties related to income taxes are reported as a component of noninterest income.

Off-Balance Sheet Credit Related Financial Instruments

In the ordinary course of business, the Company has entered into commitments to extend credit, including commitments under credit card arrangements, commercial letters of credit, and standby letters of credit. Such financial instruments are recorded when they are funded.

Geographical Descriptions

For the purpose of describing the geographical location of the Company’s loans, the Company has defined northern California as that area of California north of, and including, Stockton; central California as that area of the state south of Stockton, to and including, Bakersfield; and southern California as that area of the state south of Bakersfield.

Reclassifications

During the three months ended September 30, 2017, the Company changed its classification of 1st lien and 2nd lien non-owner occupied 1-4 residential real estate mortgage loans from commercial real estate mortgage loans to residential real estate mortgage loans and consumer home equity loans, respectively. This change in loan category classification was made to better align the Company’s financial reporting classifications with regulatory reporting classifications, and to properly classify these loans for regulatory risk-based capital ratio calculations.

Certain amounts reported in previous consolidated financial statements have been reclassified and recalculated to conform to the presentation in this report. These reclassifications did not affect previously reported net income, total loans or total shareholders’ equity.

Recent Accounting Pronouncements

FASB Accounting Standards Update (ASU) No.2014-09, Revenue from Contracts with Customers (Topic 606): ASU 2014-09 is intended to clarify the principles for recognizing revenue, and to develop common revenue standards and disclosure requirements that would: (1) remove inconsistencies and weaknesses in revenue requirements; (2) provide a more robust framework for addressing revenue issues; (3) improve comparability of revenue recognition practices across entities, industries, jurisdictions, and capital markets; (4) provide more useful information to users of financial statements through improved disclosures; and (5) simplify the preparation of financial statements by reducing the number of requirements to which an entity must refer. The guidance affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets. The core principle is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance provides steps to follow to achieve the core principle. An entity should disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Qualitative and quantitative information is required with regard to contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2017, including interim periods therein, with early adoption permitted for reporting periods beginning after December 15, 2016. ASU 2014-09 does not apply to revenue associated with financial instruments such as loans and investments, which are accounted for under other provisions of GAAP. The Company adopted ASU 2014-09 on January 1, 2018 utilizing the modified retrospective approach. Since there was no net income impact upon adoption of the new guidance, a cumulative effect adjustment to opening retained earnings was not deemed necessary.

In January 2016, the FASB issued ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities.” This ASU addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments by making targeted improvements to GAAP as follows: (1) require equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer; (2) simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. When a qualitative assessment indicates that impairment exists, an entity is required to measure the investment at fair value; (3) eliminate the requirement to disclose the fair value of financial instruments measured at amortized cost for entities that are not public business entities; (4) eliminate the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; (5) require public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (6) require an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (7) require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements; and (8) clarify that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets. The adoption of ASU No. 2016-01 on January 1, 2018 did not have a material impact on the Company’s Consolidated Financial Statements. In accordance with (1) above, the Company recorded a reclassification of cumulative unrealized losses of its marketable equity securities from accumulated other comprehensive income (loss) to retained earnings as of January 1, 2018. Additionally, the Company recognized changes in the fair value of its marketable equity securities in the condensed consolidated statements of net income for the three months ended March 31, 2018. In accordance with (5) above, the Company measured the fair value of its loan portfolio as of March 31, 2018 using an exit price notion (see Note 27 Fair Value Measurement).

FASB issued Accounting Standard Update (ASU) No. 2016-02, Leases (Topic 842). ASU 2016-2, among other things, requires lessees to recognize most leases on-balance sheet, increasing reported assets and liabilities. Lessor accounting remains substantially similar to current U.S. GAAP. ASU 2016-02 will be effective for the Company on January 1, 2019, utilizing the modified retrospective transition approach. The Company is currently evaluating the provisions of ASU No. 2016-02 and has determined that the adoption of this standard will result in an increase in assets to recognize the present value of the lease obligations with a corresponding increase in liabilities; however, the Company does not expect this to have a material impact on the Company’s results of operations or cash flows.

FASB issued Accounting Standard Update (ASU) No. 2016-09, Compensation – Stock Compensation (Topic 718). ASU 2016-09, among other things, requires: (i) that all excess tax benefits and tax deficiencies (including tax benefits of dividends on share-based payment awards) should be recognized as income tax expense or benefit in the income statement, (ii) the tax effects of exercised or vested awards should be treated as discrete items in the reporting period in which they occur, (iii) an entity also should recognize excess tax benefits regardless of whether the benefit reduces taxes payable in the current period, (iv) excess tax benefits should be classified along with other income tax cash flows as an operating activity, (v) an entity can make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest (current GAAP) or account for forfeitures when they occur, (vi) the threshold to qualify for equity classification permits withholding up to the maximum statutory tax rates in the applicable jurisdictions, and (vii) cash paid by an employer when directly

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withholding shares for tax withholding purposes should be classified as a financing activity. ASU 2016-09 was effective for the Company on January 1, 2017 and due to the options exercised during the three months ended March 31, 2017, resulted in the recognition of $90,000 in excess tax benefits.

FASB issued ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326). ASU 2016-13 is the final guidance on the new current expected credit loss (‘‘CECL’’) model. ASU 2016-13, among other things, requires the incurred loss impairment methodology in current GAAP be replaced with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to estimate future credit loss estimates. As CECL encompasses all financial assets carried at amortized cost, the requirement that reserves be established based on an organization’s reasonable and supportable estimate of expected credit losses extends to held to maturity (‘‘HTM’’) debt securities. ASU 2016-13 amends the accounting for credit losses on available-for-sale securities (‘‘AFS’’), whereby credit losses will be presented as an allowance as opposed to a write-down. In addition, CECL will modify the accounting for purchased loans with credit deterioration since origination, so that reserves are established at the date of acquisition for purchased loans. Lastly, ASU 2016-13 requires enhanced disclosures on the significant estimates and judgments used to estimate credit losses, as well as on the credit quality and underwriting standards of an organization’s portfolio. These disclosures require organizations to present the currently required credit quality disclosures disaggregated by the year of origination or vintage. ASU 2016-13 allows for a modified retrospective approach with a cumulative effect adjustment to the balance sheet upon adoption (charge to retained earnings instead of the income statement). ASU 2016-13 will be effective for the Company on January 1, 2020, and early adoption is permitted. While the Company is currently evaluating the provisions of ASU 2016-13 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements, it has taken steps to prepare for the implementation when it becomes effective, such as forming an internal task force, gathering pertinent data, consulting with outside professionals, and evaluating its current IT systems. Management expects to recognize a one-time cumulative effect adjustment to the allowance for loan losses as of the first reporting period in which the new standard is effective, but cannot yet estimate the magnitude of the one-time adjustment or the overall impact of the new guidance on the Company’s financial position, results of operations or cash flows.

FASB issued ASU No. 2016-18, Statement of Cash Flows—Restricted Cash (Topic 230). ASU 2016-18 requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. ASU 2016-18 was effective for the Company on January 1, 2018 and is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU No. 2017-01, Business Combinations—Clarifying the Definition of a Business (Topic 805). ASU 2017-01 clarifies the definition and provides a more robust framework to use in determining when a set of assets and activities constitutes a business. ASU 2017-01 is intended to provide guidance when evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. ASU 2017-01 was effective for us on January 1, 2018 and did not have a significant impact on our financial statements.

FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other: Simplifying the Test for Goodwill Impairment (Topic 350): ASU 2017-04 eliminates step two of the goodwill impairment test (the hypothetical purchase price allocation used to determine the implied fair value of goodwill) when step one (determining if the carrying value of a reporting unit exceeds its fair value) is failed. Instead, entities simply will compare the fair value of a reporting unit to its carrying amount and record goodwill impairment for the amount by which the reporting unit’s carrying amount exceeds its fair value. ASU 2017-04 will be effective for the Company on January 1, 2020 and is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU No. 2017-07, Compensation—Retirement Benefits (Topic 715). ASU 2017-07 requires that an employer report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the income statement separately from the service cost component. ASU 2017-07 was effective for the Company on January 1, 2018 and did not have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU 2017-08, Receivables—Nonrefundable Fees and Other Costs (Topic 310). ASU 2017-08 shortens the amortization period for certain callable debt securities held at a premium to require such premiums to be amortized to the earliest call date unless applicable guidance related to certain pools of securities is applied to consider estimated prepayments. Under prior guidance, entities were generally required to amortize premiums on individual, non-pooled callable debt securities as a yield adjustment over the contractual life of the security. ASU 2017-08 does not change the accounting for callable debt securities held at a discount. ASU 2017-08 will be effective for the Company on January 1, 2019, and is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU 2017-09, Compensation—Stock Compensation (Topic 718). ASU 2017-09 clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. Under ASU 2017-09, an entity will not apply modification accounting to a share-based payment award if all of the following are the same immediately before and after the change: (i) the award’s fair value, (ii) the award’s vesting conditions and (iii) the award’s classification as an equity or liability instrument. ASU 2017-09 was effective for the Company on January 1, 2018 and did not have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU 2018-02, Income Statement—Reporting Comprehensive Income (Topic 220). ASU 2018-02 allows, but does not require, entities to reclassify certain income tax effects in accumulated other comprehensive income (AOCI) to retained earnings that resulted from the Tax Cuts and Jobs Act (Tax Act) that was enacted on December 22, 2017. The Tax Act included a reduction to the Federal corporate income tax rate from 35 percent to 21 percent effective January 1, 2018. The amount of the reclassification would be the difference between the income tax effects in AOCI calculated using the historical Federal corporate income tax rate of 35 percent and the income tax effects in AOCI calculated using the newly enacted 21 percent Federal corporate income tax rate. The amendments in ASU 2018-02 are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company adopted ASU 2018-02 on January 1, 2018, and elected to reclassify certain income tax effects in AOCI to retained earnings. This change in accounting principle was accounted for as a cumulative-effect adjustment to the balance sheet resulting in a $1,093,000 increase to retained earnings and a corresponding decrease to AOCI on January 1, 2018.

13

Note 2—Business Combinations

Proposed Merger with FNB Bancorp

On December 11, 2017, the Company and FNB Bancorp, a California corporation (“FNBB”), entered into an Agreement and Plan of Merger and Reorganization (the “Merger Agreement”) pursuant to which FNBB will be merged with and into the Company, with the Company as the surviving corporation (the “Merger”). Management expects the acquisition to close in the second quarter of 2018, subject to the satisfaction of customary closing conditions, including regulatory and shareholder approvals. The Merger Agreement provides that immediately after the Merger, FNBB’s bank subsidiary, First National Bank of Northern California (“First National Bank”), will merge with and into the Company’s bank subsidiary, Tri Counties Bank, with Tri Counties Bank as the surviving bank (the “Bank Merger”). The Merger and Bank Merger are collectively referred to as the “Proposed Transaction.”

The Merger Agreement provides that each share of FNBB common stock issued and outstanding immediately prior to the effective time of the Merger will be canceled and converted into the right to receive 0.98 shares of the Company’s common stock (the “Exchange Ratio”), with cash paid in lieu of fractional shares of the Company’s common stock.

Based on the closing price of the Company’s common stock of $41.64 on December 8, 2017, the consideration value was $40.81 per share of FNBB common stock or approximately $315.3 million in aggregate. The value of the merger consideration will fluctuate until closing based on the value of the Company’s stock and subject to a trading collar in certain circumstances. Upon consummation of the Merger, the shareholders of FNBB will own approximately 24% of the combined company.

The Merger Agreement includes a trading collar that could result in termination of the Merger Agreement or a change to the Exchange Ratio. First, the Company can elect to terminate the Merger Agreement if both (i) the average share price of the Company’s common stock for the 20 day period up to and including the fifth day prior to the closing date (the “Average Closing Share Price”) is greater than $49.78, which equals 120% of the average share price of the Company’s stock for the 20 trading-day period up to and including December 8, 2017, which was $41.48 (the “Initial Price”) and (ii) the Company’s common stock outperforms the KBW Regional Banking Index by more than 20%, unless FNBB agrees that the Exchange Ratio will be reduced and fewer shares of the Company’s common stock will be issued to FNBB shareholders on a per share basis. Conversely, FNBB can terminate the Merger Agreement if both (i) the Average Closing Share Price is less than $33.18, which is equivalent to 80% of the Initial Price, and (ii) the Company’s common stock underperforms the KBW Regional Banking Index by more than 20%, unless the Company agrees that the Exchange Ratio will be increased and more shares of the Company common stock will be issued to FNBB shareholders on a per share basis.

Upon consummation of the Merger, each outstanding and unexercised option to acquire shares of FNBB common stock held by FNBB’s employees and directors will be canceled and, in exchange, the holder of the option will be entitled to receive, whether or not the option is fully vested, a lump sum cash payment equal to the product of (1) the number of shares of FNBB common stock remaining under the option multiplied by (2) the Exchange Ratio multiplied by (3) the amount, if any, by which the Average Closing Share Price exceeds the exercise price of the option.

The consummation of the Merger is subject to a number of conditions, which include: (i) the approval of the Merger Agreement by FNBB’s shareholders and the approval of the Merger Agreement and the issuance of shares of the Company common stock by the Company’s shareholders; (ii) as of the closing of the Merger, FNBB shall have tangible common equity of not less than $119.0 million, subject to credit for certain merger-related expenses and certain assumptions and adjustments that are set forth in the Merger Agreement; (iii) the receipt of all necessary regulatory approvals for the Proposed Transaction, without the imposition of conditions or requirements that the Company’s Board of Directors reasonably determines in good faith would, individually or in the aggregate, materially reduce the economic benefits of the Proposed Transaction; (iv) the absence of any regulation, judgment, decree, injunction or other order of a governmental authority which prohibits the consummation of the Proposed Transaction or which prohibits or makes illegal the consummation of the Proposed Transaction; (v) the effective registration of the shares of the Company’s Common Stock to be issued to FNBB’s shareholders with the Securities and Exchange Commission (the “SEC”) and the approval of such shares for listing on the Nasdaq Global Select Market; (vi) all representations and warranties made by the Company and FNBB in the Merger Agreement must remain true and correct, except for certain inaccuracies that would not have, or would not reasonably be expected to have, a material adverse effect; and (vii) the Company and FNBB must have performed their respective obligations under the Merger Agreement in all material respects.

On March 21, 2018, the Company filed a registration statement on Form S-4 that included historical and pro forma information required in connection with the Merger. The registration statement on Form S-4 was subsequently amended on April 18, 2018.

14

Note 3—Investment Securities

The amortized cost and estimated fair values of investments in debt securities are summarized in the following tables:

	March 31, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(in thousands)
Debt Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	633,310	$	317	$	(16,970	)	$	616,657
Obligations of states and political subdivisions		121,560		466		(2,788	)		119,238
Total debt securities available for sale	$	754,870	$	783	$	(19,758	)	$	735,895
Debt Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	481,457	$	533	$	(7,737	)	$	474,253
Obligations of states and political subdivisions		14,578		39		(231	)		14,386
Total debt securities held to maturity	$	496,035	$	572	$	(7,968	)	$	488,639
	December 31, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(in thousands)
Debt Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	609,695	$	695	$	(5,601	)	$	604,789
Obligations of states and political subdivisions		121,597		1,888		(329	)		123,156
Total debt securities available for sale	$	731,292	$	2,583	$	(5,930	)	$	727,945
Debt Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	500,271	$	5,101	$	(1,889	)	$	503,483
Obligations of states and political subdivisions		14,573		146		(37	)		14,682
Total debt securities held to maturity	$	514,844	$	5,247	$	(1,926	)	$	518,165

No investment securities were sold during the three months ended March 31, 2018 or the three months ended March 31, 2017. Investment securities with an aggregate carrying value of $415,542,000 and $285,596,000 at March 31, 2018 and December 31, 2017, respectively, were pledged as collateral for specific borrowings, lines of credit and local agency deposits.

The amortized cost and estimated fair value of debt securities at March 31, 2018 by contractual maturity are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. At March 31, 2018, obligations of U.S. government corporations and agencies with a cost basis totaling $1,114,767,000 consist almost entirely of residential real estate mortgage-backed securities whose contractual maturity, or principal repayment, will follow the repayment of the underlying mortgages. For purposes of the following table, the entire outstanding balance of these mortgage-backed securities issued by U.S. government corporations and agencies is categorized based on final maturity date. At March 31, 2018, the Company estimates the average remaining life of these mortgage-backed securities issued by U.S. government corporations and agencies to be approximately 6.1 years. Average remaining life is defined as the time span after which the principal balance has been reduced by half.

Debt Securities	Available for Sale				Held to Maturity
(In thousands)	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due in one year	$	2	$	2	$	—	$	—
Due after one year through five years		235		236		1,215		1,228
Due after five years through ten years		3,324		3,452		20,631		20,291
Due after ten years		751,309		732,205		474,189		467,120
Totals	$	754,870	$	735,895	$	496,035	$	488,639

15

Note 3—Investment Securities (continued)

Gross unrealized losses on debt securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position were as follows:

	Less than 12 months					12 months or more					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
						(in thousands)
March 31, 2018
Debt Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	434,302	$	(10,345	)	$	158,324	$	(6,625	)	$	592,626	$	(16,970	)
Obligations of states and political subdivisions		65,047		(1,456	)		16,042		(1,332	)		81,089		(2,788	)
Total debt securities available for sale	$	499,349	$	(11,801	)	$	174,366	$	(7,957	)	$	673,715	$	(19,758	)
Debt Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	299,575	$	(4,551	)	$	89,809	$	(3,186	)	$	389,384	$	(7,737	)
Obligations of states and political subdivisions		8,901		(144	)		2,579		(87	)		11,480		(231	)
Total debt securities held to maturity	$	308,476	$	(4,695	)	$	92,388	$	(3,273	)	$	400,864	$	(7,968	)
	Less than 12 months					12 months or more					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
						(in thousands)
December 31, 2017
Debt Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	284,367	$	(2,176	)	$	166,338	$	(3,425	)	$	450,705	$	(5,601	)
Obligations of states and political subdivisions		4,904		(35	)		17,085		(294	)		21,989		(329	)
Total securities available for sale	$	289,271	$	(2,211	)	$	183,423	$	(3,719	)	$	472,694	$	(5,930	)
Debt Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	93,017	$	(567	)	$	95,367	$	(1,322	)	$	188,384	$	(1,889	)
Obligations of states and political subdivisions		1,488		(7	)		2,637		(30	)		4,125		(37	)
Total debt securities held to maturity	$	94,505	$	(574	)	$	98,004	$	(1,352	)	$	192,509	$	(1,926	)

Obligations of U.S. government corporations and agencies: Unrealized losses on investments in obligations of U.S. government corporations and agencies are caused by interest rate increases. The contractual cash flows of these securities are guaranteed by U.S. Government Sponsored Entities (principally Fannie Mae and Freddie Mac). It is expected that the securities would not be settled at a price less than the amortized cost of the investment. Because the decline in fair value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell and more likely than not will not be required to sell, these investments are not considered other-than-temporarily impaired. At March 31, 2018, 128 debt securities representing obligations of U.S. government corporations and agencies had unrealized losses with aggregate depreciation of (2.45%) from the Company’s amortized cost basis.

Obligations of states and political subdivisions: The unrealized losses on investments in obligations of states and political subdivisions were caused by increases in required yields by investors in these types of securities. It is expected that the securities would not be settled at a price less than the amortized cost of the investment. Because the decline in fair value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell and more likely than not will not be required to sell, these investments are not considered other-than-temporarily impaired. At March 31, 2018, 94 debt securities representing obligations of states and political subdivisions had unrealized losses with aggregate depreciation of (3.16%) from the Company’s amortized cost basis.

Marketable equity securities: All unrealized losses recognized during the reporting period were for equity securities still held at March 31, 2018.

16

Note 4 — Loans

A summary of loan balances follows (in thousands):

	March 31, 2018
	Originated			PNCI			PCI - Cash basis			PCI - Other			Total
Mortgage loans on real estate:
Residential 1-4 family	$	323,161		$	61,206		$	—		$	1,744		$	386,111
Commercial		1,754,062			211,168			—			8,038			1,973,268
Total mortgage loan on real estate		2,077,223			272,374			—			9,782			2,359,379
Consumer:
Home equity lines of credit		266,651			14,939			1,619			42			283,251
Home equity loans		38,889			2,558			—			485			41,932
Other		21,422			2,141			—			43			23,606
Total consumer loans		326,962			19,638			1,619			570			348,789
Commercial		205,673			7,837			—			2,505			216,015
Construction:
Residential		71,589			9			—			—			71,598
Commercial		73,701			251			—			—			73,952
Total construction		145,290			260			—			—			145,550
Total loans, net of deferred loan fees and discounts	$	2,755,148		$	300,109		$	1,619		$	12,857		$	3,069,733
Total principal balance of loans owed, net of charge-offs	$	2,764,819		$	306,924		$	5,167		$	16,654		$	3,093,564
Unamortized net deferred loan fees		(9,671	)		—			—			—			(9,671	)
Discounts to principal balance of loans owed, net of charge-offs		—			(6,815	)		(3,548	)		(3,797	)		(14,160	)
Total loans, net of unamortized deferred loan fees and discounts	$	2,755,148		$	300,109		$	1,619		$	12,857		$	3,069,733
Allowance for loan losses	$	(29,057	)	$	(748	)	$	(8	)	$	(160	)	$	(29,973	)
	December 31, 2017
	Originated			PNCI			PCI - Cash basis			PCI - Other			Total
Mortgage loans on real estate:
Residential 1-4 family	$	320,522		$	63,519		$	—		$	1,385		$	385,426
Commercial		1,690,510			215,823			—			8,563			1,914,896
Total mortgage loan on real estate		2,011,032			279,342			—			9,948			2,300,322
Consumer:
Home equity lines of credit		269,942			16,248			2,069			429			288,688
Home equity loans		39,848			2,698			—			485			43,031
Other		22,859			2,251			—			45			25,155
Total consumer loans		332,649			21,197			2,069			959			356,874
Commercial		209,437			8,391			—			2,584			220,412
Construction:
Residential		67,920			10			—			—			67,930
Commercial		69,364			263			—			—			69,627
Total construction		137,284			273			—			—			137,557
Total loans, net of deferred loan fees and discounts	$	2,690,402		$	309,203		$	2,069		$	13,491		$	3,015,165
Total principal balance of loans owed, net of charge-offs	$	2,699,053		$	316,238		$	5,863		$	17,318		$	3,038,472
Unamortized net deferred loan fees		(8,651	)		—			—			—			(8,651	)
Discounts to principal balance of loans owed, net of charge-offs		—			(7,035	)		(3,794	)		(3,827	)		(14,656	)
Total loans, net of unamortized deferred loan fees and discounts	$	2,690,402		$	309,203		$	2,069		$	13,491		$	3,015,165
Allowance for loan losses	$	(29,122	)	$	(929	)	$	(17	)	$	(255	)	$	(30,323	)

The following is a summary of the change in accretable yield for PCI – other loans during the periods indicated (in thousands):

	Three months ended March 31,
	2018			2017
Change in accretable yield:
Balance at beginning of period	$	4,262		$	10,348
Accretion to interest income		(255	)		(902	)
Reclassification (to) from nonaccretable difference		140			114
Balance at end of period	$	4,147		$	9,560

17

Note 5 – Allowance for Loan Losses

The following tables summarize the activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.

	Allowance for Loan Losses – Three Months Ended March 31, 2018
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Beginning balance	$	2,317		$	11,441		$	5,800		$	1,841		$	586		$	6,512		$	1,184		$	642		$	30,323
Charge-offs		(1	)		—			(80	)		—			(194	)		(205	)		—			—			(480	)
Recoveries		—			15			209			14			78			50			—			—			366
(Benefit) provision		(146	)		39			(517	)		(119	)		100			35			167			205			(236	)
Ending balance	$	2,170		$	11,495		$	5,412		$	1,736		$	570		$	6,392		$	1,351		$	847		$	29,973
Ending balance:
Individ. evaluated for impairment	$	190		$	154		$	448		$	130		$	56		$	2,113			—			—		$	3,091
Loans pooled for evaluation	$	1,910		$	11,281		$	4,956		$	1,606		$	514		$	4,249		$	1,351		$	847		$	26,714
Loans acquired with deteriorated credit quality	$	70		$	60		$	8			—			—		$	30			—			—		$	168
	Loans, net of unearned fees – As of March 31, 2018
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	386,111		$	1,973,268		$	283,251		$	41,932		$	23,606		$	216,015		$	71,598		$	73,952		$	3,069,733
Individ. evaluated for impairment	$	5,535		$	11,110		$	2,450		$	1,673		$	278		$	4,621		$	136			—		$	25,803
Loans pooled for evaluation	$	378,832		$	1,954,120		$	279,140		$	39,774		$	23,285		$	208,889		$	71,462		$	73,952		$	3,029,454
Loans acquired with deteriorated credit quality	$	1,744		$	8,038		$	1,661		$	485		$	43		$	2,505			—			—		$	14,476
	Allowance for Loan Losses—Year Ended December 31, 2017
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Beginning balance	$	2,748		$	11,517		$	7,044		$	2,644		$	622		$	5,831		$	1,417		$	680		$	32,503
Charge-offs		(60	)		(186	)		(98	)		(332	)		(1,186	)		(1,444	)		(1,104	)		—			(4,410	)
Recoveries		—			397			698			242			375			428			—			1			2,141
(Benefit) provision		(371	)		(287	)		(1,844	)		(713	)		775			1,697			871			(39	)		89
Ending balance	$	2,317		$	11,441		$	5,800		$	1,841		$	586		$	6,512		$	1,184		$	642		$	30,323
Ending balance:
Individ. evaluated for impairment	$	230		$	30		$	427		$	107		$	57		$	1,848			—			—		$	2,699
Loans pooled for evaluation	$	1,932		$	11,351		$	5,356		$	1,734		$	529		$	4,624		$	1,184		$	642		$	27,352
Loans acquired with deteriorated credit quality	$	155		$	60		$	17			—			—		$	40			—			—		$	272
	Loans, net of unearned fees – As of December 31, 2017
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	385,426		$	1,914,896		$	288,688		$	43,031		$	25,155		$	220,412		$	67,930		$	69,627		$	3,015,165
Individ. evaluated for impairment	$	5,298		$	13,911		$	2,688		$	1,470		$	257		$	4,470		$	140			—		$	28,234
Loans pooled for evaluation	$	378,743		$	1,892,422		$	283,502		$	41,076		$	24,853		$	213,358		$	67,790		$	69,627		$	2,971,371
Loans acquired with deteriorated credit quality	$	1,385		$	8,563		$	2,498		$	485		$	45		$	2,584			—			—		$	15,560
	Allowance for Loan Losses – Three Months Ended March 31, 2017
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Beginning balance	$	2,748		$	11,517		$	7,044		$	2,644		$	622		$	5,831		$	1,417		$	680		$	32,503
Charge-offs		—			—			(71	)		(31	)		(174	)		(133	)		—			—			(409	)
Recoveries		—			110			46			12			141			170			—			1			480
(Benefit) provision		(86	)		(85	)		(489	)		(174	)		6			(542	)		(78	)		(109	)		(1,557	)
Ending balance	$	2,662		$	11,542		$	6,530		$	2,451		$	595		$	5,326		$	1,339		$	572		$	31,017
Ending balance:
Individ. evaluated for impairment	$	249		$	124		$	400		$	57		$	31		$	811		$	14			—		$	1,686
Loans pooled for evaluation	$	2,188		$	9,971		$	6,122		$	2,328		$	564		$	3,873		$	1,282		$	572		$	26,900
Loans acquired with deteriorated credit quality	$	225		$	1,447		$	8		$	66			—		$	642		$	43			—		$	2,431
	Loans, net of unearned fees – As of March 31, 2017
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	309,701		$	1,761,114		$	283,596		$	40,241		$	29,313		$	212,685		$	59,699		$	64,843		$	2,761,192
Individ. evaluated for impairment	$	3,849		$	16,979		$	2,204		$	1,241		$	280		$	3,072		$	25			—		$	27,650
Loans pooled for evaluation	$	304,493		$	1,731,785		$	277,388		$	37,867		$	28,967		$	205,832		$	58,830		$	64,843		$	2,710,005
Loans acquired with deteriorated credit quality	$	1,359		$	12,350		$	4,004		$	1,133		$	66		$	3,781		$	844			—		$	23,537

18

Note 5 – Allowance for Loan Losses (continued)

As part of the on-going monitoring of the credit quality of the Company’s loan portfolio, management tracks certain credit quality indicators including, but not limited to, trends relating to (i) the level of criticized and classified loans, (ii) net charge-offs, (iii) non-performing loans, and (iv) delinquency within the portfolio.

The Company utilizes a risk grading system to assign a risk grade to each of its loans. Loans are graded on a scale ranging from Pass to Loss. A description of the general characteristics of the risk grades is as follows:

• Pass – This grade represents loans ranging from acceptable to very little or no credit risk. These loans typically meet most if not all policy standards in regard to: loan amount as a percentage of collateral value, debt service coverage, profitability, leverage, and working capital.

• Special Mention – This grade represents “Other Assets Especially Mentioned” in accordance with regulatory guidelines and includes loans that display some potential weaknesses which, if left unaddressed, may result in deterioration of the repayment prospects for the asset or may inadequately protect the Company’s position in the future. These loans warrant more than normal supervision and attention.

• Substandard – This grade represents “Substandard” loans in accordance with regulatory guidelines. Loans within this rating typically exhibit weaknesses that are well defined to the point that repayment is jeopardized. Loss potential is, however, not necessarily evident. The underlying collateral supporting the credit appears to have sufficient value to protect the Company from loss of principal and accrued interest, or the loan has been written down to the point where this is true. There is a definite need for a well-defined workout/rehabilitation program.

• Doubtful – This grade represents “Doubtful” loans in accordance with regulatory guidelines. An asset classified as Doubtful has all the weaknesses inherent in a loan classified Substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. Pending factors include proposed merger, acquisition, or liquidation procedures, capital injection, perfecting liens on additional collateral, and financing plans.

• Loss – This grade represents “Loss” loans in accordance with regulatory guidelines. A loan classified as Loss is considered uncollectible and of such little value that its continuance as a bankable asset is not warranted. This classification does not mean that the loan has absolutely no recovery or salvage value, but rather that it is not practical or desirable to defer writing off the loan, even though some recovery may be affected in the future. The portion of the loan that is graded loss should be charged off no later than the end of the quarter in which the loss is identified.

The following tables present ending loan balances by loan category and risk grade for the periods indicated:

	Credit Quality Indicators – As of March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
Originated loans:
Pass	$	317,799	$	1,716,599	$	263,270	$	35,730	$	21,067	$	193,829	$	71,482	$	68,846	$	2,688,622
Special mention		2,274		23,679		1,628		1,532		238		7,263		—		4,855		41,469
Substandard		3,088		13,784		1,753		1,627		117		4,581		107		—		25,057
Loss		—		—		—		—		—		—		—		—		—
Total originated	$	323,161	$	1,754,062	$	266,651	$	38,889	$	21,422	$	205,673	$	71,589	$	73,701	$	2,755,148
PNCI loans:
Pass	$	59,184	$	201,641	$	13,686	$	2,301	$	2,067	$	7,837	$	9	$	251	$	286,976
Special mention		214		8,977		282		184		37		—		—		—		9,694
Substandard		1,808		550		971		73		37		—		—		—		3,439
Loss		—		—		—		—		—		—		—		—		—
Total PNCI	$	61,206	$	211,168	$	14,939	$	2,558	$	2,141	$	7,837	$	9	$	251	$	300,109
PCI loans	$	1,744	$	8,038	$	1,661	$	485	$	43	$	2,505		—		—	$	14,476
Total loans	$	386,111	$	1,973,268	$	283,251	$	41,932	$	23,606	$	216,015	$	71,598	$	73,952	$	3,069,733
	Credit Quality Indicators – As of December 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
Originated loans:
Pass	$	315,120	$	1,649,333	$	265,345	$	37,428	$	22,432	$	195,208	$	67,813	$	64,492	$	2,617,171
Special mention		2,234		18,434		2,558		800		272		9,492		—		4,872		38,662
Substandard		3,168		22,743		2,039		1,620		155		4,737		107		—		34,569
Loss		—		—		—		—		—		—		—		—		—
Total originated	$	320,522	$	1,690,510	$	269,942	$	39,848	$	22,859	$	209,437	$	67,920	$	69,364	$	2,690,402
PNCI loans:
Pass	$	61,411	$	203,751	$	14,866	$	2,433	$	2,207	$	8,390	$	10	$	263	$	293,331
Special mention		218		11,513		450		188		38		1		—		—		12,408
Substandard		1,890		559		932		77		6		—		—		—		3,464
Loss		—		—		—		—		—		—		—		—		—
Total PNCI	$	63,519	$	215,823	$	16,248	$	2,698	$	2,251	$	8,391	$	10	$	263	$	309,203
PCI loans	$	1,385	$	8,563	$	2,498	$	485	$	45	$	2,584		—		—	$	15,560
Total loans	$	385,426	$	1,914,896	$	288,688	$	43,031		25,155	$	220,412	$	67,930	$	69,627	$	3,015,165

19

Note 5 – Allowance for Loan Losses (continued)

Consumer loans, whether unsecured or secured by real estate, automobiles, or other personal property, are susceptible to three primary risks; non-payment due to income loss, over-extension of credit and, when the borrower is unable to pay, shortfall in collateral value. Typically non-payment is due to loss of job and will follow general economic trends in the marketplace driven primarily by rises in the unemployment rate. Loss of collateral value can be due to market demand shifts, damage to collateral itself or a combination of the two.

Problem consumer loans are generally identified by payment history of the borrower (delinquency). The Bank manages its consumer loan portfolios by monitoring delinquency and contacting borrowers to encourage repayment, suggest modifications if appropriate, and, when continued scheduled payments become unrealistic, initiate repossession or foreclosure through appropriate channels. Collateral values may be determined by appraisals obtained through Bank approved, licensed appraisers, qualified independent third parties, public value information (blue book values for autos), sales invoices, or other appropriate means. Appropriate valuations are obtained at initiation of the credit and periodically (every 3-12 months depending on collateral type) once repayment is questionable and the loan has been classified.

Commercial real estate loans generally fall into two categories, owner-occupied and non-owner occupied. Loans secured by owner occupied real estate are primarily susceptible to changes in the business conditions of the related business. This may be driven by, among other things, industry changes, geographic business changes, changes in the individual fortunes of the business owner, and general economic conditions and changes in business cycles. These same risks apply to commercial loans whether secured by equipment or other personal property or unsecured. Losses on loans secured by owner occupied real estate, equipment, or other personal property generally are dictated by the value of underlying collateral at the time of default and liquidation of the collateral. When default is driven by issues related specifically to the business owner, collateral values tend to provide better repayment support and may result in little or no loss. Alternatively, when default is driven by more general economic conditions, underlying collateral generally has devalued more and results in larger losses due to default. Loans secured by non-owner occupied real estate are primarily susceptible to risks associated with swings in occupancy or vacancy and related shifts in lease rates, rental rates or room rates. Most often these shifts are a result of changes in general economic or market conditions or overbuilding and resultant over-supply. Losses are dependent on value of underlying collateral at the time of default. Values are generally driven by these same factors and influenced by interest rates and required rates of return as well as changes in occupancy costs.

Construction loans, whether owner occupied or non-owner occupied commercial real estate loans or residential development loans, are not only susceptible to the related risks described above but the added risks of construction itself including cost over-runs, mismanagement of the project, or lack of demand or market changes experienced at time of completion. Again, losses are primarily related to underlying collateral value and changes therein as described above.

Problem C&I loans are generally identified by periodic review of financial information which may include financial statements, tax returns, rent rolls and payment history of the borrower (delinquency). Based on this information the Bank may decide to take any of several courses of action including demand for repayment, additional collateral or guarantors, and, when repayment becomes unlikely through borrower’s income and cash flow, repossession or foreclosure of the underlying collateral.

Collateral values may be determined by appraisals obtained through Bank approved, licensed appraisers, qualified independent third parties, public value information (blue book values for autos), sales invoices, or other appropriate means. Appropriate valuations are obtained at initiation of the credit and periodically (every 3-12 months depending on collateral type) once repayment is questionable and the loan has been classified.

Once a loan becomes delinquent and repayment becomes questionable, a Bank collection officer will address collateral shortfalls with the borrower and attempt to obtain additional collateral. If this is not forthcoming and payment in full is unlikely, the Bank will estimate its probable loss, using a recent valuation as appropriate to the underlying collateral less estimated costs of sale, and charge the loan down to the estimated net realizable amount. Depending on the length of time until ultimate collection, the Bank may revalue the underlying collateral and take additional charge-offs as warranted. Revaluations may occur as often as every 3-12 months depending on the underlying collateral and volatility of values. Final charge-offs or recoveries are taken when collateral is liquidated and actual loss is known. Unpaid balances on loans after or during collection and liquidation may also be pursued through lawsuit and attachment of wages or judgment liens on borrower’s other assets.

The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual Originated Loans – As of March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
Originated loan balance:
Past due:
30-59 Days	$	2,217	$	5,531	$	938	$	1,490	$	63	$	915	$	298	$	—	$	11,452
60-89 Days		—		—		26		18		18		534		—		1,249		1,845
> 90 Days		846		1,162		320		154		—		1,557		—		—		4,039
Total past due		3,063		6,693		1,284		1,662		81		3,006		298		1,249		17,336
Current		320,098		1,747,369		265,367		37,227		21,341		202,667		71,291		72,452		2,737,812
Total originated loans	$	323,161	$	1,754,062	$	266,651	$	38,889	$	21,422	$	205,673	$	71,589	$	73,701	$	2,755,148
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	2,235	$	7,925	$	733	$	1,193	$	4	$	3,990		—		—	$	16,080

20

Note 5 – Allowance for Loan Losses (continued)

The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual PNCI Loans – As of March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
PNCI loan balance:
Past due:
30-59 Days	$	2,537		—	$	362	$	2		—	$	1		—		—	$	2,902
60-89 Days		—		—		—		—		4		—		—		—		4
> 90 Days		—		—		146		—		28		—		—		—		174
Total past due		2,537		—		508		2		32		1		—		—		3,080
Current		58,669		211,168		14,431		2,556		2,109		7,836		9		251		297,029
Total PNCI loans	$	61,206	$	211,168	$	14,939	$	2,558	$	2,141	$	7,837	$	9	$	251	$	300,109
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	1,067		—	$	571	$	40	$	33		—		—		—	$	1,711

The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual Originated Loans – As of December 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
Originated loan balance:
Past due:
30-59 Days	$	1,740	$	158	$	528	$	511	$	56	$	956	$	34		—	$	3,983
60-89 Days		510		987		48		107		36		738		—		—		2,426
> 90 Days		243		—		372		373		3		1,527		—		—		2,518
Total past due	$	2,493	$	1,145	$	948	$	991	$	95	$	3,221	$	34		—	$	8,927
Current		318,029		1,689,365		268,994		38,857		22,764		206,216		67,886	$	69,364		2,681,475
Total originated loans	$	320,522	$	1,690,510	$	269,942	$	39,848	$	22,859	$	209,437	$	67,920	$	69,364	$	2,690,402
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	1,725	$	8,144	$	811	$	1,106	$	7	$	3,669		—		—	$	15,462

The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual PNCI Loans – As of December 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
PNCI loan balance:
Past due:
30-59 Days	$	1,495	$	70	$	298	$	30	$	6		—		—		—	$	1,899
60-89 Days		90		—		228		—		26		—		—		—		344
> 90 Days		109		—		330		—		—		—		—		—		439
Total past due	$	1,694	$	70	$	856	$	30	$	32		—		—		—	$	2,682
Current		61,825		215,753		15,392		2,668		2,219	$	8,391	$	10	$	263		306,521
Total PNCI loans	$	63,519	$	215,823	$	16,248	$	2,698	$	2,251	$	8,391	$	10	$	263	$	309,203
> 90 Days and still accruing	$	81		—	$	200		—		—		—		—		—	$	281
Nonaccrual loans	$	1,012		—	$	402	$	44	$	5		—		—		—	$	1,463

21

Note 5 – Allowance for Loan Losses (continued)

Impaired originated loans are those where management has concluded that it is probable that the borrower will be unable to pay all amounts due under the original contractual terms. The following tables show the recorded investment (financial statement balance), unpaid principal balance, average recorded investment, and interest income recognized for impaired Originated and PNCI loans, segregated by those with no related allowance recorded and those with an allowance recorded for the periods indicated.

	Impaired Originated Loans – As of, or for the Three Months Ended, March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	2,678	$	9,848	$	888	$	1,193		—	$	881	$	136		—	$	15,624
Unpaid principal	$	2,829	$	10,126	$	944	$	1,548		—	$	894	$	136		—	$	16,477
Average recorded investment	$	2,368	$	11,474	$	991	$	1,150	$	2	$	728	$	138		—	$	16,851
Interest income recognized	$	19	$	35	$	6		—		—	$	9	$	2		—	$	71
With an allowance recorded:
Recorded investment	$	1,525	$	1,262	$	527	$	196	$	4	$	3,740		—		—	$	7,254
Unpaid principal	$	1,549	$	1,281	$	534	$	196	$	4	$	3,862		—		—	$	7,426
Related allowance	$	190	$	154	$	146	$	10	$	4	$	2,113		—		—	$	2,617
Average recorded investment	$	1,703	$	1,036	$	464	$	197	$	4	$	3,817		—		—	$	7,221
Interest income recognized	$	9	$	9	$	4	$	2		—	$	17		—		—	$	41
	Impaired PNCI Loans – As of, or for the Three Months Ended, March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	1,332		—	$	501	$	40	$	28		—		—		—	$	1,901
Unpaid principal	$	1,390		—	$	529	$	54	$	28		—		—		—	$	2,001
Average recorded investment	$	1,345		—	$	546	$	42	$	14		—		—		—	$	1,947
Interest income recognized	$	2		—	$	2				—		—		—		—	$	4
With an allowance recorded:
Recorded investment		—		—	$	534	$	244	$	246		—		—		—	$	1,024
Unpaid principal		—		—	$	536	$	244	$	246		—		—		—	$	1,026
Related allowance		—		—	$	302	$	120	$	52		—		—		—	$	474
Average recorded investment		—		—	$	568	$	183	$	248		—		—		—	$	999
Interest income recognized		—		—	$	3	$	3	$	2		—		—		—	$	8
	Impaired Originated Loans – As of, or for the Twelve Months Ended, December 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	2,058	$	13,101	$	1,093	$	1,107	$	4	$	575	$	140		—	$	18,078
Unpaid principal	$	2,109	$	13,360	$	1,175	$	1,429	$	52	$	585	$	140		—	$	18,850
Average recorded investment	$	1,875	$	13,123	$	1,287	$	852	$	10	$	668	$	76		—	$	17,891
Interest income recognized	$	85	$	609	$	39	$	14		—	$	18	$	9		—	$	774
With an allowance recorded:
Recorded investment	$	1,881	$	810	$	401	$	198	$	3	$	3,895		—		—	$	7,188
Unpaid principal	$	1,914	$	826	$	406	$	198	$	3	$	3,981		—		—	$	7,328
Related allowance	$	230	$	30	$	111	$	10	$	3	$	1,848		—		—	$	2,232
Average recorded investment	$	1,626	$	728	$	415	$	341	$	10	$	3,615		—		—	$	6,735
Interest income recognized	$	58	$	36	$	8	$	10		—	$	166		—		—	$	278
	Impaired PNCI Loans – As of, or for the Twelve Months Ended, December 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	1,359		—	$	591	$	44		—		—		—		—	$	1,994
Unpaid principal	$	1,404		—	$	612	$	57		—		—		—		—	$	2,073
Average recorded investment	$	911	$	913	$	663	$	56	$	2		—		—		—	$	2,545
Interest income recognized	$	24		—	$	22		—		—		—		—		—	$	46
With an allowance recorded:
Recorded investment		—		—	$	603	$	121	$	250		—		—		—	$	974
Unpaid principal		—		—	$	604	$	121	$	250		—		—		—	$	975
Related allowance		—		—	$	316	$	97	$	54		—		—		—	$	467
Average recorded investment	$	130	$	66	$	577	$	61	$	184		—		—		—	$	1,018
Interest income recognized		—		—	$	26	$	6	$	11		—		—		—	$	43

22

Note 5 – Allowance for Loan Losses (continued)

	Impaired Originated Loans – As of, or for the Three Months Ended, March 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	1,782	$	14,431	$	1,064	$	743	$	5	$	1,289	$	11		—	$	19,325
Unpaid principal	$	1,793	$	14,881	$	1,144	$	1,085	$	6	$	1,312	$	16		—	$	20,237
Average recorded investment	$	2,834	$	20,770	$	2,013	$	845	$	12	$	932	$	7		—	$	27,413
Interest income recognized	$	20	$	98	$	6	$	1		—	$	7		—		—	$	132
With an allowance recorded:
Recorded investment	$	1,378	$	640	$	427	$	440	$	21	$	1,783	$	14		—	$	4,703
Unpaid principal	$	1,382	$	640	$	440	$	443	$	22	$	1,842	$	14		—	$	4,783
Related allowance	$	172	$	18	$	106	$	57	$	14	$	811	$	14		—	$	1,192
Average recorded investment	$	1,692	$	1,029	$	1,076	$	557	$	11	$	1,938	$	7		—	$	6,310
Interest income recognized	$	11	$	9	$	1	$	5		—	$	14		—		—	$	40
	Impaired PNCI Loans – As of, or for the Three Months Ended, March 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	433	$	1,777	$	220	$	58	$	138		—		—		—	$	2,626
Unpaid principal	$	455	$	2,011	$	233	$	67	$	139		—		—		—	$	2,905
Average recorded investment	$	654	$	1,455	$	337	$	64	$	86	$	1		—	$	245	$	2,842
Interest income recognized	$	2		—	$	1		—	$	2		—		—		—	$	5
With an allowance recorded:
Recorded investment	$	256	$	131	$	493		—	$	116		—		—		—	$	996
Unpaid principal	$	256	$	131	$	493		—	$	116		—		—		—	$	996
Related allowance	$	77	$	106	$	295		—	$	16		—		—		—	$	494
Average recorded investment	$	128	$	1,440	$	550	$	19	$	175		—		—		—	$	2,312
Interest income recognized	$	2	$	2	$	5		—	$	1		—		—		—	$	10

At March 31, 2018, $9,781,000 of originated loans were TDR and classified as impaired. The Company had obligations to lend $1,000 of additional funds on these TDR as of March 31, 2018. At March 31, 2018, $1,471,000 of PNCI loans were TDR and classified as impaired. The Company had no obligations to lend additional funds on these TDR as of March 31, 2018.

At December 31, 2017, $12,517,000 of Originated loans were TDRs and classified as impaired. The Company had obligations to lend $1,000 of additional funds on these TDRs as of December 31, 2017. At December 31, 2017, $1,352,000 of PNCI loans were TDRs and classified as impaired. The Company had no obligations to lend additional funds on these TDRs as of December 31, 2017.

At March 31, 2017, $12,285,000 of originated loans were TDR and classified as impaired. The Company had obligations to lend $70,000 of additional funds on these TDR as of March 31, 2017. At March 31, 2017, $1,470,000 of PNCI loans were TDR and classified as impaired. The Company had no obligations to lend additional funds on these TDR as of March 31, 2017.

The following table shows certain information regarding TDRs that occurred during the period indicated:

	TDR Information for the Three Months Ended March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(dollars in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
Number		—		1		1		1		—		—		—		—		3
Pre-mod outstanding principal balance		—	$	384	$	133	$	121		—		—		—		—	$	638
Post-mod outstanding principal balance		—	$	384	$	138	$	121		—		—		—		—	$	643
Financial impact due to TDR taken as additional provision		—	$	11		—		—		—		—		—		—	$	11
Number that defaulted during the period		—		1		—		—		—		—		—		—		1
Recorded investment of TDRs that defaulted during the period		—	$	169		—		—		—		—		—		—	$	169
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions		—		—		—		—		—		—		—		—		—

23

Note 5 – Allowance for Loan Losses (continued)

The following table shows certain information regarding TDRs that occurred during the period indicated:     

	TDR Information for the Year Ended December 31, 2017
	RE Mortgage					Home Equity					Other				Construction
(dollars in thousands)	Resid.		Comm.			Lines			Loans		Consum.		C&I		Resid.		Comm.		Total
Number		1		8			3			1		1		11		1		—		26
Pre-mod outstanding principal balance	$	939	$	3,721		$	187		$	252	$	14	$	1,854	$	144		—	$	7,111
Post-mod outstanding principal balance	$	939	$	3,695		$	187		$	252	$	14	$	1,747	$	144		—	$	6,978
Financial impact due to TDR taken as additional provision	$	169	$	(111	)	$	27			—	$	11	$	37		—		—	$	133
Number that defaulted during the period		2		1			1			1		—		—		—		—		5
Recorded investment of TDRs that defaulted during the period	$	223	$	219		$	127		$	55		—		—		—		—	$	624
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions		—		—		$	(5	)		—		—		—		—		—	$	(5	)

Modifications classified as TDRs can include one or a combination of the following: rate modifications, term extensions, interest only modifications, either temporary or long-term, payment modifications, and collateral substitutions/additions.

For all new TDRs, an impairment analysis is conducted. If the loan is determined to be collateral dependent, any additional amount of impairment will be calculated based on the difference between estimated collectible value and the current carrying balance of the loan. This difference could result in an increased provision and is typically charged off. If the asset is determined not to be collateral dependent, the impairment is measured on the net present value difference between the expected cash flows of the restructured loan and the cash flows which would have been received under the original terms. The effect of this could result in a requirement for additional provision to the reserve. The effect of these required provisions for the period are indicated above.

Typically if a TDR defaults during the period, the loan is then considered collateral dependent and, if it was not already considered collateral dependent, an appropriate provision will be reserved or charge will be taken. The additional provisions required resulting from default of previously modified TDR’s are noted above.

Note 6 – Foreclosed Assets

A summary of the activity in the balance of foreclosed assets follows (dollars in thousands):

	Three months ended March 31, 2018			Three months ended March 31, 2017
	Total			Noncovered			Covered			Total
Beginning balance, net	$	3,226		$	3,763		$	223		$	3,986
Additions/transfers from loans		—			85			—			85
Dispositions/sales		(1,572	)		(385	)		(223	)		(608	)
Valuation adjustments		(90	)		66			—			66
Ending balance, net	$	1,564		$	3,529			—		$	3,529
Ending valuation allowance	$	(152	)	$	(300	)		—		$	(300	)
Ending number of foreclosed assets		10			12			—			12
Proceeds from sale of foreclosed assets	$	1,943		$	510		$	216		$	726
Gain (loss) on sale of foreclosed assets	$	371		$	125		$	(7	)	$	118

As of March 31, 2018, $836,000 of foreclosed residential real estate properties, all of which the Company has obtained physical possession of, are included in foreclosed assets. At March 31, 2018, the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are underway is $407,000.

Note 7 – Premises and Equipment

Premises and equipment were comprised of:

	March 31, 2018			December 31, 2017
	(In thousands)
Land & land improvements	$	9,959		$	9,959
Buildings		50,792			50,340
Furniture and equipment		37,348			35,939
		98,099			96,238
Less: Accumulated depreciation		(41,678	)		(40,644	)
		56,421			55,594
Construction in progress		2,137			2,148
Total premises and equipment	$	58,558		$	57,742

Depreciation expense for premises and equipment amounted to $1,371,000 and $1,311,000 for the three months ended March 31, 2018 and 2017, respectively.

24

Note 8 – Cash Value of Life Insurance

A summary of the activity in the balance of cash value of life insurance follows (dollars in thousands):

	Three months ended March 31,
	2018		2017
Beginning balance	$	97,783	$	95,912
Increase in cash value of life insurance		608		685
Gain on death benefit		—		107
Insurance proceeds receivable reclassified to other assets		—		(921	)
Ending balance	$	98,391	$	95,783
End of period death benefit	$	159,640	$	164,574
Number of policies owned		182		183
Insurance companies used		14		14
Current and former employees and directors covered		57		58

As of March 31, 2018, the Bank was the owner and beneficiary of 182 life insurance policies, issued by 14 life insurance companies, covering 57 current and former employees and directors. These life insurance policies are recorded on the Company’s financial statements at their reported cash (surrender) values. As a result of current tax law and the nature of these policies, the Bank records any increase in cash value of these policies as nontaxable noninterest income. If the Bank decided to surrender any of the policies prior to the death of the insured, such surrender may result in a tax expense related to the life-to-date cumulative increase in cash value of the policy. If the Bank retains such policies until the death of the insured, the Bank would receive nontaxable proceeds from the insurance company equal to the death benefit of the policies. The Bank has entered into Joint Beneficiary Agreements (JBAs) with certain of the insured that for certain of the policies provide some level of sharing of the death benefit, less the cash surrender value, among the Bank and the beneficiaries of the insured upon the receipt of death benefits. See Note 15 of these condensed consolidated financial statements for additional information on JBAs.

Note 9 – Goodwill and Other Intangible Assets

The following table summarizes the Company’s goodwill intangible as of the dates indicated:

(in thousands)	March 31, 2018		Additions		Reductions		December 31, 2017
Goodwill	$	64,311		—		—	$	64,311

The following table summarizes the Company’s core deposit intangibles as of the dates indicated:

(in thousands)	March 31, 2018			Additions		Reductions/ Amortization			December 31, 2017
Core deposit intangibles	$	9,558			—		—		$	9,558
Accumulated amortization		(4,723	)		—	$	(339	)		(4,384	)
Core deposit intangibles, net	$	4,835			—	$	(339	)	$	5,174

The Company recorded additions to its CDI of $2,046,000 in conjunction with the acquisition of three branch offices from Bank of America on March 18, 2016, $6,614,000 in conjunction with the North Valley Bancorp acquisition on October 3, 2014, and $898,000 in conjunction with the Citizens acquisition on September 23, 2011. The following table summarizes the Company’s remaining estimated core deposit intangible amortization (in thousands):

Years Ended	Estimated Core Deposit Intangible Amortization
2018	$	1,324
2019		1,228
2020		1,228
2021		969
2022		280
Thereafter		145

25

Note 10 – Mortgage Servicing Rights

The following tables summarize the activity in, and the main assumptions used to determine the fair value of mortgage servicing rights (“MSRs”) for the periods indicated (dollars in thousands):

	Three months ended March 31,
	2018			2017
Balance at beginning of period	$	6,687		$	6,595
Additions		155			278
Change in fair value		111			(13	)
Balance at end of period	$	6,953		$	6,860
Contractually specified servicing fees, late fees and ancillary fees earned	$	517		$	521
Balance of loans serviced at:
Beginning of period	$	811,065		$	816,623
End of period	$	806,478		$	822,506
Weighted-average prepayment speed (CPR)		7.5	%		8.3	%
Weighted-average discount rate		13.0	%		14.0	%

The changes in fair value of MSRs that occurred during the three months ended March 31, 2018 and 2017 were mainly due to changes in principal balances, changes in mortgage prepayment speeds, and changes in investor required rate of return, or discount rate, of the MSRs.

Note 11 – Indemnification Asset

A summary of the activity in the balance of indemnification asset follows (in thousands):

	Three months ended March 31,
	2018		2017
Beginning balance		—	$	(744	)
Effect of actual and estimated future covered losses and recoveries		—		(191	)
Reimbursable (revenue) expenses incurred		—		(32	)
Payments made to (received from) FDIC		—		72
Ending balance		—	$	(895	)
Amount of indemnification liability recorded in other assets		—	$	(179	)
Amount of indemnification liability recorded in other liabilities		—		(716	)
Ending balance		—	$	(895	)

On May 9, 2017, the Company and the FDIC terminated their loss sharing agreements. As part of the termination agreement, the Company paid the FDIC $184,000, and recorded a $712,000 gain representing the difference between the Company’s payment to the FDIC and the recorded payable balance on May 9, 2017.

Note 12 – Other Assets

Other assets were comprised of (in thousands):

	March 31, 2018		December 31, 2017
Deferred tax asset, net	$	26,266	$	21,697
Investment in low income housing tax credit funds		17,095		16,854
Prepaid expense		4,411		4,111
Tax refund receivable		4,754		4,754
Capital trusts		1,709		1,706
Software		883		1,126
Life insurance proceeds receivable		—		2,242
Miscellaneous other assets		1,156		2,561
Total other assets	$	56,274	$	55,051

26

Note 13 – Deposits

A summary of the balances of deposits follows (in thousands):

	March 31, 2018		December 31, 2017
Noninterest-bearing demand	$	1,359,996	$	1,368,218
Interest-bearing demand		1,022,299		971,459
Savings		1,395,481		1,364,518
Time certificates, over $250,000		76,306		73,596
Other time certificates		230,322		231,340
Total deposits	$	4,084,404	$	4,009,131

Certificate of deposit balances of $50,000,000 from the State of California were included in time certificates, $250,000 and over, at each of March 31, 2018 and December 31, 2017. The Bank participates in a deposit program offered by the State of California whereby the State may make deposits at the Bank’s request subject to collateral and credit worthiness constraints. The negotiated rates on these State deposits are generally more favorable than other wholesale funding sources available to the Bank. Overdrawn deposit balances of $1,085,000 and $1,366,000 were classified as consumer loans at March 31, 2018 and December 31, 2017, respectively.

Note 14 – Reserve for Unfunded Commitments

The following tables summarize the activity in reserve for unfunded commitments for the periods indicated (in thousands):

	Three months ended March 31,
	2018		2017
Balance at beginning of period	$	3,164	$	2,719
Provision for losses – unfunded commitments		700		15
Balance at end of period	$	3,864	$	2,734

Note 15 – Other Liabilities

Other liabilities were comprised of (in thousands):

	March 31, 2018		December 31, 2017
Pension liability	$	28,686	$	28,472
Low income housing tax credit fund commitments		7,677		8,554
Deferred compensation		6,809		6,605
Taxes payable		5,243		—
Accrued salaries and benefits expense		5,180		6,619
Joint beneficiary agreements		3,429		3,365
Loan escrow and servicing payable		1,464		1,958
Deferred revenue		1,077		1,228
Litigation contingency		—		1,450
Miscellaneous other liabilities		3,964		5,007
Total other liabilities	$	63,529	$	63,258

Note 16 – Other Borrowings

A summary of the balances of other borrowings follows:

	March 31, 2018		December 31, 2017
	(in thousands)
FHLB collateralized borrowing, fixed rate, as of March 31, 2018 of 1.87%, payable on April 2, 2018	$	48,000
FHLB collateralized borrowing, fixed rate, as of December 31, 2017 of 1.38%, payable on January 2, 2018			$	104,729
Other collateralized borrowings, fixed rate, as of March 31, 2018 and December 31, 2017 of 0.05%, payable on April 2, 2018 and January 2, 2018, respectively		17,041		17,437
Total other borrowings	$	65,041	$	122,166

The Company did not enter into any repurchase agreements during the three months ended March 31, 2018 or the year ended December 31, 2017.

27

Note 16 – Other Borrowings (continued)

The Company maintains a collateralized line of credit with the Federal Home Loan Bank of San Francisco. Based on the FHLB stock requirements at March 31, 2018, this line provided for maximum borrowings of $1,597,695,000 of which $48,000,000 was outstanding, leaving $1,549,695,000 available. As of March 31, 2018, the Company has designated investment securities with fair value of $205,777,000 and loans totaling $2,138,150,000 as potential collateral under this collateralized line of credit with the FHLB.

The Company had $17,041,000 and $17,437,000 of other collateralized borrowings at March 31, 2018 and December 31, 2017, respectively. Other collateralized borrowings are generally overnight maturity borrowings from non-financial institutions that are collateralized by securities owned by the Company. As of March 31, 2018, the Company has pledged as collateral and sold under agreements to repurchase investment securities with fair value of $31,667,000 under these other collateralized borrowings.

The Company maintains a collateralized line of credit with the San Francisco Federal Reserve Bank. As of March 31, 2018, this line provided for maximum borrowings of $140,921,000 of which zero was outstanding, leaving $140,921,000 available. As of March 31, 2018, the Company has designated investment securities with fair value of $15,677 and loans totaling $262,663,000 as potential collateral under this collateralized line of credit with the San Francisco Federal Reserve Bank.

The Company had available unused correspondent banking lines of credit from commercial banks totaling $20,000,000 for federal funds transactions at March 31, 2018.

Note 17 – Junior Subordinated Debt

At March 31, 2018, the Company had five wholly-owned subsidiary business trusts that had issued $62.9 million of trust preferred securities (the “Capital Trusts”). Trust preferred securities accrue and pay distributions periodically at specified annual rates as provided in the indentures. The trusts used the net proceeds from the offering to purchase a like amount of subordinated debentures (the “Debentures”) of the Company. The Debentures are the sole assets of the trusts. The Company’s obligations under the subordinated debentures and related documents, taken together, constitute a full and unconditional guarantee by the Company of the obligations of the trusts. The trust preferred securities are mandatorily redeemable upon the maturity of the Debentures, or upon earlier redemption as provided in the indentures. The Company has the right to redeem the Debentures in whole (but not in part) on or after specific dates, at a redemption price specified in the indentures plus any accrued but unpaid interest to the redemption date. The Company also has a right to defer consecutive payments of interest on the debentures for up to five years.

The Company organized two of the Capital Trusts. The Company acquired its three other Capital Trusts and assumed their related Debentures as a result of its acquisition of North Valley Bancorp. At the acquisition date of October 3, 2014, the Debentures associated with North Valley Bancorp’s three Capital Trusts were recorded on the Company’s books at their fair values of $5,006,000, $3,918,000, and $6,063,000, respectively. The related fair value discounts to face value of these Debentures will be amortized over the remaining time to maturity for each of these Debentures using the effective interest method. Similar, and proportional, discounts were applied to the acquired common stock interests in each of the acquired Capital Trusts and these discounts will be proportionally amortized over the remaining time to maturity for each related debenture.

The recorded book values of the Debentures issued by the Capital Trusts are reflected as junior subordinated debt in the Company’s consolidated balance sheets. The common stock issued by the Capital Trusts and owned by the Company is recorded in other assets in the Company’s consolidated balance sheets. The recorded book value of the debentures issued by the Capital Trusts, less the recorded book value of the common stock of the Capital Trusts owned by the Company, continues to qualify as Tier 1 or Tier 2 capital under interim guidance issued by the Board of Governors of the Federal Reserve System.

The following table summarizes the terms and recorded balance of each subordinated debenture as of the date indicated (dollars in thousands):

Subordinated Debt Series					Coupon Rate			As of March 31, 2018					December 31, 2017
	Maturity		Face		(Variable)			Current			Recorded		Recorded
	Date		Value		3 mo. LIBOR +			Coupon Rate			Book Value		Book Value
TriCo Cap Trust I		10/7/2033	$	20,619		3.05	%		4.77	%	$	20,619	$	20,619
TriCo Cap Trust II		7/23/2034		20,619		2.55	%		4.29	%		20,619		20,619
North Valley Trust II		4/24/2033		6,186		3.25	%		5.02	%		5,145		5,135
North Valley Trust III		4/24/2034		5,155		2.80	%		4.54	%		4,050		4,041
North Valley Trust IV		3/15/2036		10,310		1.33	%		3.45	%		6,472		6,444
			$	62,889							$	56,905	$	56,858

During the three months ended March 31, 2018, the balance of Junior Subordinated Debt increased $47,000 to $56,905,000 due to purchase fair value discount amortization.

28

Note 18 – Commitments and Contingencies

Restricted Cash Balances— Reserves (in the form of deposits with the San Francisco Federal Reserve Bank) of $91,860,000 and $82,068,000 were maintained to satisfy Federal regulatory requirements at March 31, 2018 and December 31, 2017. These reserves are included in cash and due from banks in the accompanying consolidated balance sheets.

Lease Commitments— The Company leases 41 sites under non-cancelable operating leases. The leases contain various provisions for increases in rental rates, based either on changes in the published Consumer Price Index or a predetermined escalation schedule. Substantially all of the leases provide the Company with the option to extend the lease term one or more times following expiration of the initial term. The Company currently does not have any capital leases.

At December 31, 2017, future minimum commitments under non-cancelable operating leases with initial or remaining terms of one year or more are as follows:

	Operating Leases
	(in thousands)
2018	$	3,278
2019		2,499
2020		1,847
2021		1,488
2022		757
Thereafter		798
Future minimum lease payments	$	10,667

Rent expense under operating leases was $921,000 and $1,047,000 during the three months ended March 31, 2018 and 2017, respectively. Rent expense was offset by rent income of $10,000 and $13,000 during the three months ended March 31, 2018 and 2017, respectively.

Financial Instruments with Off-Balance-Sheet Risk— The Company is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, standby letters of credit, and deposit account overdraft privilege. Those instruments involve, to varying degrees, elements of risk in excess of the amount recognized in the balance sheet. The contract amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments.

The Company’s exposure to loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit written is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. The Company’s exposure to loss in the event of nonperformance by the other party to the financial instrument for deposit account overdraft privilege is represented by the overdraft privilege amount disclosed to the deposit account holder.

The following table presents a summary of the Company’s commitments and contingent liabilities:

(in thousands)	March 31, 2018		December 31, 2017
Financial instruments whose amounts represent risk:
Commitments to extend credit:
Commercial loans	$	253,001	$	257,220
Consumer loans		437,790		422,958
Real estate mortgage loans		73,618		66,267
Real estate construction loans		236,650		187,097
Standby letters of credit		11,573		13,075
Deposit account overdraft privilege		101,411		98,260

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates of one year or less or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s credit worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on Management’s credit evaluation of the customer. Collateral held varies, but may include accounts receivable, inventory, property, plant and equipment, residential properties, and income-producing commercial properties.

Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support private borrowing arrangements. Most standby letters of credit are issued for one year or less. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. Collateral requirements vary, but in general follow the requirements for other loan facilities.

29

Note 18 – Commitments and Contingencies (continued)

Deposit account overdraft privilege amount represents the unused overdraft privilege balance available to the Company’s deposit account holders who have deposit accounts covered by an overdraft privilege. The Company has established an overdraft privilege for certain of its deposit account products whereby all holders of such accounts who bring their accounts to a positive balance at least once every thirty days receive the overdraft privilege. The overdraft privilege allows depositors to overdraft their deposit account up to a predetermined level. The predetermined overdraft limit is set by the Company based on account type.

Legal Proceedings — Neither the Company nor its subsidiaries are a party to any pending legal proceedings that are material, nor is their property the subject of any other material pending legal proceeding at this time. All other legal proceedings are routine and arise out of the ordinary course of the Bank’s business. None of those proceedings are currently expected to have a material adverse impact upon the Company’s and the Bank’s business, their consolidated financial position nor their operations in any material amount not already accrued, after taking into consideration any applicable insurance.

Other Commitments and Contingencies—The Company has entered into employment agreements or change of control agreements with certain officers of the Company providing severance payments and accelerated vesting of benefits under supplemental retirement agreements to the officers in the event of a change in control of the Company and termination for other than cause or after a substantial and material change in the officer’s title, compensation or responsibilities.

The Company owns 13,396 shares of Class B common stock of Visa Inc. which are convertible into Class A common stock at a conversion ratio of 1.648265 per Class B share. As of March 31, 2018, the value of the Class A shares was $119.62 per share. Utilizing the conversion ratio, the value of unredeemed Class A equivalent shares owned by the Bank was $2,641,000 as of March 31, 2018, and has not been reflected in the accompanying financial statements. The shares of Visa Class B common stock are restricted and may not be transferred. Visa Member Banks are required to fund an escrow account to cover settlements, resolution of pending litigation and related claims. If the funds in the escrow account are insufficient to settle all the covered litigation, Visa may sell additional Class A shares, use the proceeds to settle litigation, and further reduce the conversion ratio. If funds remain in the escrow account after all litigation is settled, the Class B conversion ratio will be increased to reflect that surplus.

Mortgage loans sold to investors may be sold with servicing rights retained, with only the standard legal representations and warranties regarding recourse to the Company. Management believes that any liabilities that may result from such recourse provisions are not significant.

Note 19 – Shareholders’ Equity

Dividends Paid

The Bank paid to the Company cash dividends in the aggregate amounts of $4,372,000 and $4,042,000 during the three months ended March 31, 2018 and 2017, respectively. The Bank is regulated by the Federal Deposit Insurance Corporation (FDIC) and the State of California Department of Business Oversight. Absent approval from the Commissioner of the Department of Business Oversight, California banking laws generally limit the Bank’s ability to pay dividends to the lesser of (1) retained earnings or (2) net income for the last three fiscal years, less cash distributions paid during such period. Under this law, at December 31, 2017, the Bank could have paid dividends of $85,254,000 to the Company without the approval of the Commissioner of the Department of Business Oversight.

Stock Repurchase Plan

On August 21, 2007, the Board of Directors adopted a plan to repurchase, as conditions warrant, up to 500,000 shares of the Company’s common stock on the open market. The timing of purchases and the exact number of shares to be purchased will depend on market conditions. The 500,000 shares authorized for repurchase under this stock repurchase plan represented approximately 3.2% of the Company’s 15,814,662 outstanding common shares as of August 21, 2007. This stock repurchase plan has no expiration date. As of March 31, 2018, the Company had repurchased 166,600 shares under this plan.

Stock Repurchased Under Equity Compensation Plans

During the three months ended March 31, 2018 and 2017, employees tendered 134 and 16,251 shares, respectively, of the Company’s common stock with market value of $4,000, and $604,000, respectively, in lieu of cash to exercise options to purchase shares of the Company’s stock and to pay income taxes related to equity compensation plan instruments as permitted by the Company’s shareholder-approved equity compensation plans. The tendered shares were retired. The market value of tendered shares is the last market trade price at closing on the day an option is exercised. Stock repurchased under equity incentive plans are not included in the total of stock repurchased under the stock repurchase plan announced on August 21, 2007.

30

Note 20 – Stock Options and Other Equity-Based Incentive Instruments

In March 2009, the Company’s Board of Directors adopted the TriCo Bancshares 2009 Equity Incentive Plan (2009 Plan) covering officers, employees, directors of, and consultants to, the Company. The 2009 Plan was approved by the Company’s shareholders in May 2009. The 2009 Plan allows for the granting of the following types of “stock awards” (Awards): incentive stock options, nonstatutory stock options, performance awards, restricted stock, restricted stock unit (RSU) awards and stock appreciation rights. RSUs that vest based solely on the grantee remaining in the service of the Company for a certain amount of time, are referred to as “service condition vesting RSUs”. RSUs that vest based on the grantee remaining in the service of the Company for a certain amount of time and a market condition such as the total return of the Company’s common stock versus the total return of an index of bank stocks, are referred to as “market plus service condition vesting RSUs”. In May 2013, the Company’s shareholders approved an amendment to the 2009 Plan increasing the maximum aggregate number of shares of TriCo’s common stock which may be issued pursuant to or subject to Awards from 650,000 to 1,650,000. The number of shares available for issuance under the 2009 Plan is reduced by: (i) one share for each share of common stock issued pursuant to a stock option or a Stock Appreciation Right and (ii) two shares for each share of common stock issued pursuant to a Performance Award, a Restricted Stock Award or a Restricted Stock Unit Award. When Awards made under the 2009 Plan expire or are forfeited or cancelled, the underlying shares will become available for future Awards under the 2009 Plan. To the extent that a share of common stock pursuant to an Award that counted as two shares against the number of shares again becomes available for issuance under the 2009 Plan, the number of shares of common stock available for issuance under the 2009 Plan shall increase by two shares. Shares awarded and delivered under the 2009 Plan may be authorized but unissued, or reacquired shares. As of March 31, 2018, 446,400 options for the purchase of common shares, and 121,102 restricted stock units were outstanding, and 526,418 shares remain available for issuance, under the 2009 Plan.

In May 2001, the Company adopted the TriCo Bancshares 2001 Stock Option Plan (2001 Plan) covering officers, employees, directors of, and consultants to, the Company. Under the 2001 Plan, the option exercise price cannot be less than the fair market value of the Common Stock at the date of grant except in the case of substitute options. Options for the 2001 Plan expire on the tenth anniversary of the grant date.

Vesting schedules under the 2001 Plan are determined individually for each grant. As of March 31, 2018, 34,500 options for the purchase of common shares were outstanding under the 2001 Plan. As of May 2009, as a result of the shareholder approval of the 2009 Plan, no new options may be granted under the 2001 Plan.

Stock option activity during the three months ended March 31, 2018 is summarized in the following table:

	Number of Shares		Option Price per Share		Weighted Average Exercise Price		Value on Date of Grant	Weighted Average Fair Value
Outstanding at December 31, 2017		446,400	$	12.63 to $23.21	$	16.84
Options granted		—		— to —		—
Options exercised		—		— to —		—
Options forfeited		—		— to —		—
Outstanding at March 31, 2018		446,400	$	12.63 to $23.21	$	16.84

The following table shows the number, weighted-average exercise price, intrinsic value, and weighted average remaining contractual life of options exercisable, options not yet exercisable and total options outstanding as of March 31, 2018:

	Currently		Currently Not		Total
	Exercisable		Exercisable		Outstanding
Number of options		423,600		22,800		446,400
Weighted average exercise price	$	16.65	$	20.45	$	16.84
Intrinsic value (in thousands)	$	8,713	$	382	$	9,096
Weighted average remaining contractual term (yrs.)		3.6		5.5		3.7

The 22,800 options that are currently not exercisable as of March 31, 2018 are expected to vest, on a weighted-average basis, over the next 6 months, and the Company is expected to recognize $61,000 of pre-tax compensation costs related to these options as they vest. The Company did not modify any option grants during 2017 or the three months ended March 31, 2018.

Restricted stock unit (RSU) activity is summarized in the following table for the dates indicated:

	Service Condition Vesting RSUs				Market Plus Service Condition Vesting RSUs
	Number of RSUs			Weighted Average Fair Value on Date of Grant	Number of RSUs		Weighted Average Fair Value on Date of Grant
Outstanding at December 31, 2017		68,457				52,829
RSUs granted		—				—
RSUs added through dividend credits		310				—
RSUs released		(494	)			—
RSUs forfeited/expired		—				—
Outstanding at March 31, 2018		68,273				52,829

The 68,273 of service condition vesting RSUs outstanding as of March 31, 2018 include a feature whereby each RSU outstanding is credited with a dividend amount equal to any common stock cash dividend declared and paid, and the credited amount is divided by the closing price of the Company’s stock on the dividend payable date to arrive at an additional amount of RSUs outstanding under the original grant. The 68,273 of service condition vesting RSUs outstanding as of March 31, 2018 are expected to vest, and be released, on a weighted-average basis, over the next 1.0 year. The Company expects to recognize $1,211,000 of pre-tax compensation costs related to these service condition vesting RSUs between March 31, 2018 and their vesting dates. The Company did not modify any service condition vesting RSUs during 2017 or the three months ended March 31, 2018.

31

Note 20 – Stock Options and Other Equity-Based Incentive Instruments (continued)

The 52,829 of market plus service condition vesting RSUs outstanding as of March 31, 2018 are expected to vest, and be released, on a weighted-average basis, over the next 1.2 years. The Company expects to recognize $608,000 of pre-tax compensation costs related to these RSUs between March 31, 2018 and their vesting dates. As of March 31, 2018, the number of market plus service condition vesting RSUs outstanding that will actually vest, and be released, may be reduced to zero or increased to 79,244 depending on the total return of the Company’s common stock versus the total return of an index of bank stocks from the grant date to the vesting date. The Company did not modify any market plus service condition vesting RSUs during 2017 or the three months ended March 31, 2018.

Note 21 – Noninterest Income and Expense

The components of other noninterest income were as follows (in thousands):

	Three months ended March 31,
	2018			2017
Service charges on deposit accounts	$	3,779		$	3,619
ATM and interchange fees		4,235			4,015
Other service fees		714			765
Mortgage banking service fees		517			521
Change in value of mortgage servicing rights		111			(13	)
Total service charges and fees		9,356			8,907
Commissions on sale of non-deposit investment products		876			607
Gain on sale of loans		626			910
Increase in cash value of life insurance		608			685
Gain on sale of foreclosed assets		371			118
Lease brokerage income		128			206
Sale of customer checks		101			104
Change in indemnification asset		—			(221	)
Life insurance proceeds in excess of cash value		—			107
Loss on disposal of fixed assets		(13	)		—
Loss on marketable equity securities		(47	)		—
Other		284			280
Total other noninterest income		2,934			2,796
Total noninterest income	$	12,290		$	11,703

Mortgage loan servicing fees, net of change in fair value of mortgage loan servicing rights, totaling $628,000 and $508,000 were recorded in service charges and fees noninterest income for the three months ended March 31, 2018 and 2017, respectively.

32

Note 21 – Noninterest Income and Expense (continued)

The components of noninterest expense were as follows (in thousands):

	Three months ended March 31,
	2018		2017
Base salaries, net of deferred loan origination costs	$	13,962	$	13,390
Incentive compensation		2,452		2,198
Benefits and other compensation costs		5,238		5,305
Total salaries and benefits expense		21,652		20,893
Occupancy		2,681		2,692
Data processing and software		2,514		2,396
Equipment		1,551		1,723
ATM and POS network charges		1,226		853
Advertising		838		967
Professional fees		773		766
Telecommunications		701		643
Change in reserve for unfunded commitments		700		15
Merger and acquisition expense		476		—
Assessments		430		405
Postage		358		404
Intangible amortization		339		359
Operational losses		294		435
Courier service		267		254
Provision for (reversal of) foreclosed asset losses		90		(66	)
Foreclosed assets expense		24		38
Other miscellaneous expense		3,248		3,045
Total other noninterest expense		16,510		14,929
Total noninterest expense	$	38,162	$	35,822
Merger and acquisition expense:
Professional fees	$	355		—
Advertising and marketing		8		—
Other miscellaneous expense		112		—
Total merger and acquisition expense	$	476		—

Note 22 – Income Taxes

The provisions for income taxes applicable to income before taxes differ from amounts computed by applying the statutory Federal income tax rates to income before taxes. The effective tax rate and the statutory federal income tax rate are reconciled for the periods indicated as follows:

	Three months ended March 31,
	2018			2017
Federal statutory income tax rate		21.0	%		35.0	%
State income taxes, net of federal tax benefit		9.0			6.9
Tax-exempt interest on municipal obligations		(1.1	)		(1.9	)
Increase in cash value of insurance policies		(0.7	)		(1.4	)
Low income housing tax credits		(1.0	)		(0.6	)
Equity compensation		—			(0.5	)
Nondeductible merger expenses		0.4			—
Nondeductible joint beneficiary agreement expense		0.1			0.1
Other		0.4			0.2
Effective Tax Rate		28.1	%		37.8	%

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Note 23 – Earnings Per Share

Basic earnings per share represent income available to common shareholders divided by the weighted-average number of common shares outstanding during the period. Diluted earnings per share reflect additional common shares that would have been outstanding if dilutive potential common shares had been issued, as well as any adjustments to income that would result from assumed issuance. Potential common shares that may be issued by the Company relate solely from outstanding stock options, and are determined using the treasury stock method. Earnings per share have been computed based on the following:

	Three months ended March 31,
(in thousands)	2018		2017
Net income	$	13,910	$	12,079
Average number of common shares outstanding		22,956		22,870
Effect of dilutive stock options and restricted stock		327		362
Average number of common shares outstanding used to calculate diluted earnings per share		23,283		23,232
Options excluded from diluted earnings per share because the effect of these options was antidilutive		—		—

Note 24 – Comprehensive Income

Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income. Although certain changes in assets and liabilities, such as unrealized gains and losses on available-for-sale securities, are reported as a separate component of the equity section of the balance sheet, such items, along with net income, are components of comprehensive income. The components of other comprehensive income and related tax effects are as follows:

	Three months ended March 31,
(in thousands)	2018			2017
Unrealized holding gains (losses) on available for sale securities before reclassifications	$	(15,265	)	$	787
Amounts reclassified out of accumulated other comprehensive income:
Adoption ASU 2016-01		62			—
Adoption ASU 2018-02		(425	)		—
Total amounts reclassified out of accumulated other comprehensive income		(363	)		—
Unrealized holding gains (losses) on available for sale securities after reclassifications		(15,628	)		787
Tax effect		4,602			(330	)
Unrealized holding gains (losses) on available for sale securities, net of tax		(11,026	)		457
Change in unfunded status of the supplemental retirement plans before reclassifications		667			—
Amounts reclassified out of accumulated other comprehensive income:
Amortization of prior service cost		(13	)		(3	)
Amortization of actuarial losses		127			96
Adoption ASU 2018-02		(668	)		—
Total amounts reclassified out of accumulated other comprehensive income		(554	)		93
Change in unfunded status of the supplemental retirement plans after reclassifications		113			93
Tax effect		(33	)		(39	)
Change in unfunded status of the supplemental retirement plans, net of tax		80			54
Change in joint beneficiary agreement liability before reclassifications		—			—
Amounts reclassified out of accumulated other comprehensive income		—			—
Change in joint beneficiary agreement liability after reclassifications		—			—
Tax effect		—			—
Change in joint beneficiary agreement liability, net of tax		—			—
Total other comprehensive income (loss)	$	(10,946	)	$	511

34

Note 24 - Comprehensive Income (continued)

The components of accumulated other comprehensive income, included in shareholders’ equity, are as follows:

	Three months ended March 31,
(in thousands)	2018			2017
Net unrealized loss on available for sale securities	$	(18,975	)	$	(8,083	)
Tax effect		5,610			3,399
Unrealized holding loss on available for sale securities, net of tax		(13,365	)		(4,684	)
Unfunded status of the supplemental retirement plans		(5,238	)		(4,621	)
Tax effect		1,549			1,943
Unfunded status of the supplemental retirement plans, net of tax		(3,689	)		(2,678	)
Joint beneficiary agreement liability		(151	)		(40	)
Tax effect		—			—
Joint beneficiary agreement liability, net of tax		(151	)		(40	)
Accumulated other comprehensive loss	$	(17,205	)	$	(7,402	)

Note 25 - Retirement Plans

401(k) Plan

The Company sponsors a 401(k) Plan that allows participants to contribute a portion of their compensation subject to certain limits based on federal tax laws. Prior to July 1, 2015, the Company did not contribute to the 401(k) Plan. Effective July 1, 2015, the Company initiated a discretionary matching contribution equal to 50% of participant’s elective deferrals each quarter, up to 4% of eligible compensation. The Company recorded $203,000, and $186,000 of salaries & benefits expense attributable to the 401(k) Plan matching contributions during the three months ended March 31, 2018 and 2017, respectively. The Company made contributions to the 401(k) Plan of $199,000 and $179,000 during the three months ended March 31, 2018 and 2017, respectively.

Employee Stock Ownership Plan

Substantially all employees with at least one year of service are covered by a discretionary employee stock ownership plan (ESOP). Contributions are made to the plan at the discretion of the Board of Directors. Contributions to the plan totaling $465,000 and $525,000 during the three months ended March 31, 2018 and 2017, respectively, are included in salary expense. Company shares owned by the ESOP are paid dividends and included in the calculation of earnings per share exactly as other common shares outstanding.

Deferred Compensation Plans

The Company has deferred compensation plans for certain directors and key executives, which allow certain directors and key executives designated by the Board of Directors of the Company to defer a portion of their compensation. The Company has purchased insurance on the lives of the participants and intends to hold these policies until death as a cost recovery of the Company’s deferred compensation obligations of $6,809,000 and $6,605,000 at March 31, 2018 and December 31, 2017, respectively.    Earnings credits on deferred balances totaling $124,000 and $145,000 during the three months ended March 31, 2018 and 2017, respectively, are included in noninterest expense.

Supplemental Retirement Plans

The Company has supplemental retirement plans for current and former directors and key executives. These plans are non-qualified defined benefit plans and are unsecured and unfunded. The Company has purchased insurance on the lives of the participants and intends (but is not required) to use the cash values of these policies to pay the retirement obligations. The following table sets forth the net periodic benefit cost recognized for the plans:

	Three months ended March 31,
	2018			2017
(in thousands)
Net pension cost included the following components:
Service cost-benefits earned during the period	$	243		$	235
Interest cost on projected benefit obligation		237			249
Amortization of net obligation at transition		1			1
Amortization of prior service cost		(13	)		(3	)
Recognized net actuarial loss		127			96
Net periodic pension cost	$	595		$	578

During the three months ended March 31, 2018 and 2017, the Company contributed and paid out as benefits $267,000 and $259,000, respectively, to participants under the plans. For the year ending December 31, 2018, the Company expects to contribute and pay out as benefits $1,106,000 to participants under the plans.

35

Note 26 - Related Party Transactions

Certain directors, officers, and companies with which they are associated were customers of, and had banking transactions with, the Company or the Bank in the ordinary course of business.

The following table summarizes the activity in these loans for periods indicated (in thousands):

Balance December 31, 2016	$	2,432
Advances/new loans		437
Removed/payments		(721	)
Balance December 31, 2017		2,148
Advances/new loans		145
Removed/payments		(314	)
Balance March 31, 2018	$	1,979

Deposits of directors, officers and other related parties to the Bank totaled $30,871,000 and $46,025,000 at March 31, 2018 and December 31, 2017, respectively.

Note 27 - Fair Value Measurement

The Company utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. In estimating fair value, the Company utilizes valuation techniques that are consistent with the market approach, income approach, and/or the cost approach. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability including assumptions about the risk inherent in a particular valuation technique, the effect of a restriction on the sale or use of an asset and the risk of nonperformance. Securities available-for-sale and mortgage servicing rights are recorded at fair value on a recurring basis. Additionally, from time to time, the Company may be required to record at fair value other assets on a nonrecurring basis, such as loans held for sale, loans held for investment and certain other assets. These nonrecurring fair value adjustments typically involve application of lower of cost or market accounting or impairment write-downs of individual assets.

The Company groups assets and liabilities at fair value in three levels, based on the markets in which the assets and liabilities are traded and the observable nature of the assumptions used to determine fair value. These levels are:

Level 1 -	Valuation is based upon quoted prices for identical instruments traded in active markets.
Level 2 -	Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market.
Level 3 -	Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.

Securities available for sale - Securities available for sale are recorded at fair value on a recurring basis. Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and money market funds. Level 2 securities include mortgage-backed securities issued by government sponsored entities, municipal bonds and corporate debt securities. The Company had no securities classified as Level 3 during any of the periods covered in these financial statements.

Loans held for sale - Loans held for sale are carried at the lower of cost or fair value. The fair value of loans held for sale is based on what secondary markets are currently offering for loans with similar characteristics. As such, we classify those loans subjected to nonrecurring fair value adjustments as Level 2.

Impaired originated and PNCI loans - Originated and PNCI loans are not recorded at fair value on a recurring basis. However, from time to time, an originated or PNCI loan is considered impaired and an allowance for loan losses is established. Originated and PNCI loans for which it is probable that payment of interest and principal will not be made in accordance with the original contractual terms of the loan agreement are considered impaired. The fair value of an impaired originated or PNCI loan is estimated using one of several methods, including collateral value, fair value of similar debt, enterprise value, liquidation value and discounted cash flows. Those impaired originated and PNCI loans not requiring an allowance represent loans for which the fair value of the expected repayments or collateral exceed the recorded investments in such loans. Impaired originated and PNCI loans where an allowance is established based on the fair value of collateral require classification in the fair value hierarchy. When the fair value of the collateral is based on an observable market price or a current appraised value which uses substantially observable data, the Company records the impaired originated or PNCI loan as nonrecurring Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value, or the appraised value contains a significant unobservable assumption, such as deviations from comparable sales, and there is no observable market price, the Company records the impaired originated or PNCI loan as nonrecurring Level 3.

36

Note 27 - Fair Value Measurement (continued)

Foreclosed assets - Foreclosed assets include assets acquired through, or in lieu of, loan foreclosure.    Foreclosed assets are held for sale and are initially recorded at fair value at the date of foreclosure, establishing a new cost basis. Subsequent to foreclosure, management periodically performs valuations and the assets are carried at the lower of carrying amount or fair value less cost to sell. When the fair value of foreclosed assets is based on an observable market price or a current appraised value which uses substantially observable data, the Company records the foreclosed asset as nonrecurring Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value, or the appraised value contains a significant unobservable assumption, such as deviations from comparable sales, and there is no observable market price, the Company records the foreclosed asset as nonrecurring Level 3. Revenue and expenses from operations and changes in the valuation allowance are included in other noninterest expense.

Mortgage servicing rights - Mortgage servicing rights are carried at fair value. A valuation model, which utilizes a discounted cash flow analysis using a discount rate and prepayment speed assumptions is used in the computation of the fair value measurement. While the prepayment speed assumption is currently quoted for comparable instruments, the discount rate assumption currently requires a significant degree of management judgment and is therefore considered an unobservable input. As such, the Company classifies mortgage servicing rights subjected to recurring fair value adjustments as Level 3. Additional information regarding mortgage servicing rights can be found in Note 10 in the consolidated financial statements at Item 1 of this report.

The table below presents the recorded amount of assets and liabilities measured at fair value on a recurring basis (in thousands):

Fair value at March 31, 2018	Total		Level 1		Level 2		Level 3
Marketable equity securities	$	2,890	$	2,890	$	—	$	—
Debt securities available for sale:
Obligations of U.S. government corporations and agencies		616,657		—		616,657		—
Obligations of states and political subdivisions		119,238		—		119,238		—
Mortgage servicing rights		6,953		—		—		6,953
Total assets measured at fair value	$	745,738	$	2,890	$	735,895	$	6,953
Fair value at December 31, 2017	Total		Level 1		Level 2		Level 3
Marketable equity securities	$	2,938	$	2,938	$	—	$	—
Debt securities available for sale:
Obligations of U.S. government corporations and agencies		604,789		—		604,789		—
Obligations of states and political subdivisions		123,156		—		123,156		—
Mortgage servicing rights		6,687		—		—		6,687
Total assets measured at fair value	$	737,570	$	2,938	$	727,945	$	6,687

Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally corresponds with the Company’s quarterly valuation process. There were no transfers between any levels during the three months ended March 31, 2018 or the year ended December 31, 2017.

The following table provides a reconciliation of assets and liabilities measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the time periods indicated. Had there been any transfer into or out of Level 3 during the time periods indicated, the amount included in the “Transfers into (out of) Level 3” column would represent the beginning balance of an item in the period (interim quarter) during which it was transferred (in thousands):

Three months ended March 31,	Beginning Balance		Transfers into (out of) Level 3		Change Included in Earnings			Issuances		Ending Balance
2018: Mortgage servicing rights	$	6,687		—	$	111		$	155	$	6,953
2017: Mortgage servicing rights	$	6,595		—	$	(13	)	$	278	$	6,860

The Company’s method for determining the fair value of mortgage servicing rights is described in Note 1. The key unobservable inputs used in determining the fair value of mortgage servicing rights are mortgage prepayment speeds and the discount rate used to discount cash projected cash flows. Generally, any significant increases in the mortgage prepayment speed and discount rate utilized in the fair value measurement of the mortgage servicing rights will result in a negative fair value adjustments (and decrease in the fair value measurement). Conversely, a decrease in the mortgage prepayment speed and discount rate will result in a positive fair value adjustment (and increase in the fair value measurement). Note 10 contains additional information regarding mortgage servicing rights.

The following table presents quantitative information about recurring Level 3 fair value measurements at March 31, 2018:

	Fair Value (in thousands)		Valuation Technique	Unobservable Inputs	Range, Weighted Average
Mortgage Servicing Rights	$	6,953	Discounted cash flow	Constant prepayment rate		6.0%-19.7%, 7.5	%
				Discount rate		11.0%-15.0%, 13.0%

37

Note 27 - Fair Value Measurement (continued)

The following table presents quantitative information about recurring Level 3 fair value measurements at December 31, 2017:

	Fair Value (in thousands)		Valuation Technique	Unobservable Inputs	Range, Weighted Average
Mortgage Servicing Rights	$	6,687	Discounted cash flow	Constant prepayment rate		6.2%-22.0%, 8.9	%
				Discount rate		13.0%-15.0%, 13.0%

The tables below present the recorded investment in assets and liabilities measured at fair value on a nonrecurring basis, as of the dates indicated (in thousands):

Three months ended March 31, 2018	Total		Level 1		Level 2		Level 3		Total Gains (Losses)
Fair value:
Impaired Originated & PNCI loans	$	2,103		—		—	$	2,103	$	(795	)
Foreclosed assets		774		—		—		774		(87	)
Total assets measured at fair value	$	2,877		—		—	$	2,877	$	(882	)
Year ended December 31, 2017	Total		Level 1		Level 2		Level 3		Total Gains (Losses)
Fair value:
Impaired Originated & PNCI loans	$	2,767		—		—	$	2,767	$	(1,452	)
Foreclosed assets		2,217		—		—		2,217		(135	)
Total assets measured at fair value	$	4,984		—		—	$	4,984	$	(1,587	)
Three months ended March 31, 2017	Total		Level 1		Level 2		Level 3		Total Gains (Losses)
Fair value:
Impaired Originated & PNCI loans	$	824		—		—	$	824	$	30
Foreclosed assets		1,528		—		—		1,528		(22	)
Total assets measured at fair value	$	2,352		—		—	$	2,352	$	8

The impaired Originated and PNCI loan amount above represents impaired, collateral dependent loans that have been adjusted to fair value. When we identify a collateral dependent loan as impaired, we measure the impairment using the current fair value of the collateral, less selling costs. Depending on the characteristics of a loan, the fair value of collateral is generally estimated by obtaining external appraisals. If we determine that the value of the impaired loan is less than the recorded investment in the loan, we recognize this impairment and adjust the carrying value of the loan to fair value through the allowance for loan and lease losses. The loss represents charge-offs or impairments on collateral dependent loans for fair value adjustments based on the fair value of collateral. The carrying value of loans fully charged-off is zero.

The foreclosed assets amount above represents impaired real estate that has been adjusted to fair value. Foreclosed assets represent real estate which the Company has taken control of in partial or full satisfaction of loans. At the time of foreclosure, other real estate owned is recorded at fair value less costs to sell, which becomes the property’s new basis. Any write-downs based on the asset’s fair value at the date of acquisition are charged to the allowance for loan and lease losses. After foreclosure, management periodically performs valuations such that the real estate is carried at the lower of its new cost basis or fair value, net of estimated costs to sell. Fair value adjustments on other real estate owned are recognized within net loss on real estate owned. The loss represents impairments on non-covered other real estate owned for fair value adjustments based on the fair value of the real estate.

The Company’s property appraisals are primarily based on the sales comparison approach and income approach methodologies, which consider recent sales of comparable properties, including their income generating characteristics, and then make adjustments to reflect the general assumptions that a market participant would make when analyzing the property for purchase. These adjustments may increase or decrease an appraised value and can vary significantly depending on the location, physical characteristics and income producing potential of each property. Additionally, the quality and volume of market information available at the time of the appraisal can vary from period to period and cause significant changes to the nature and magnitude of comparable sale adjustments. Given these variations, comparable sale adjustments are generally not a reliable indicator for how fair value will increase or decrease from period to period. Under certain circumstances, management discounts are applied based on specific characteristics of an individual property.

38

Note 27 - Fair Value Measurement (continued)

The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at March 31, 2018:

March 31, 2018	Fair Value (in thousands)		Valuation Technique	Unobservable Inputs	Range, Weighted Average
Impaired Originated & PNCI loans	$	2,103	Sales comparison approach Income approach	Adjustment for differences between comparable sales Capitalization rate	Not meaningful N/A
Foreclosed assets (Land & construction)	$	190	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful
Foreclosed assets (Residential real estate)	$	492	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful
Foreclosed assets (Commercial real estate)	$	92	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful

The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at December 31, 2017:

December 31, 2017	Fair Value (in thousands)		Valuation Technique	Unobservable Inputs	Range, Weighted Average
Impaired Originated & PNCI loans	$	2,767	Sales comparison approach Income approach	Adjustment for differences between comparable sales Capitalization rate	Not meaningful N/A
Foreclosed assets (Land & construction)	$	1,341	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful
Foreclosed assets (Residential real estate)	$	622	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful
Foreclosed assets (Commercial real estate)	$	254	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful

Fair values for financial instruments are management’s estimates of the values at which the instruments could be exchanged in a transaction between willing parties. These estimates are subjective and may vary significantly from amounts that would be realized in actual transactions. In addition, other significant assets are not considered financial assets including, any mortgage banking operations, deferred tax assets, and premises and equipment. Further, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on the fair value estimates and have not been considered in any of these estimates.

In January 2018, the Company adopted the provisions of Accounting Standard Update 2016-01 “Recognition and Measurement of Financial Assets and Financial Liabilities”, which requires the Company to use the exit price notion when measuring the fair value of financial instruments. The Company used the exit price notion for valuing financial instruments in 2018 and the entry price notion for valuing financial instruments in 2017. The estimated fair values of financial instruments that are reported at amortized cost in the Company’s consolidated balance sheets, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value, were as follows (in thousands):

	March 31, 2018				December 31, 2017
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial assets:
Level 1 inputs:
Cash and due from banks	$	87,138	$	87,138	$	105,968	$	105,968
Cash at Federal Reserve and other banks		95,841		95,841		99,460		99,460
Level 2 inputs:
Securities held to maturity		496,035		488,639		514,844		518,165
Restricted equity securities		16,956		N/A		16,956		N/A
Loans held for sale		2,149		2,149		4,616		4,616
Level 3 inputs:
Loans, net		3,039,760		3,025,636		2,984,842		2,992,225
Financial liabilities:
Level 2 inputs:
Deposits		4,084,404		4,081,089		4,009,131		4,006,620
Other borrowings		65,041		65,041		122,166		122,166
Level 3 inputs:
Junior subordinated debt		56,905		59,982		56,858		58,466
	Contract Amount		Fair Value		Contract Amount		Fair Value
Off-balance sheet:
Level 3 inputs:
Commitments	$	1,001,059	$	10,011	$	933,542	$	9,335
Standby letters of credit		11,573		116		13,075		131
Overdraft privilege commitments		101,411		1,014		98,260		983

39

Note 28—TriCo Bancshares Condensed Financial Statements (Parent Only)

Condensed Balance Sheets

	March 31, 2018			December 31, 2017
	(In thousands)
Assets
Cash and cash equivalents	$	3,516		$	3,924
Investment in Tri Counties Bank		557,380			557,538
Other assets		1,758			1,721
Total assets	$	562,654		$	563,183
Liabilities and shareholders’ equity
Other liabilities	$	493		$	517
Junior subordinated debt		56,905			56,858
Total liabilities		57,398			57,375
Shareholders’ equity:
Preferred stock, no par value: 1,000,000 shares authorized, zero issued and outstanding at March 31, 2018 and December 31, 2017		—			—
Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 22,956,323 and 22,955,963 shares, respectively		256,226			255,836
Retained earnings		266,235			255,200
Accumulated other comprehensive loss, net		(17,205	)		(5,228	)
Total shareholders’ equity		505,256			505,808
Total liabilities and shareholders’ equity	$	562,654		$	563,183
Condensed Statements of Income
	Three months ended March 31,
	2018			2017
	(In thousands)
Interest expense	$	(697	)	$	(595	)
Administration expense		(426	)		(159	)
Loss before equity in net income of Tri Counties Bank		(1,123	)		(754	)
Equity in net income of Tri Counties Bank:
Distributed		4,372			4,042
Undistributed		10,397			8,474
Income tax benefit		264			317
Net income	$	13,910		$	12,079
Condensed Statements of Comprehensive Income
	Three months ended March 31,
	2018			2017
	(In thousands)
Net income	$	13,910		$	12,079
Other comprehensive income (loss), net of tax:
Increase (decrease) in unrealized gains on available for sale securities arising during the period		(11,026	)		457
Change in minimum pension liability		80			54
Other comprehensive income (loss)		(10,946	)		511
Comprehensive income	$	2,964		$	12,590

40

Note 28 - TriCo Bancshares Condensed Financial Statements (Parent Only) (continued)

Condensed Statements of Cash Flows

	Three months ended March 31,
	2018			2017
	(In thousands)
Operating activities:
Net income	$	13,910		$	12,079
Adjustments to reconcile net income to net cash provided by operating activities:
Undistributed equity in earnings of Tri Counties Bank		(10,397	)		(8,474	)
Equity compensation vesting expense		391			381
Stock option excess tax benefits					—
Net change in other assets and liabilities		(405	)		(348	)
Net cash provided by operating activities		3,499			3,638
Investing activities: None
Financing activities:
Repurchase of common stock		(4	)		(169	)
Cash dividends paid — common		(3,903	)		(3,431	)
Net cash used for financing activities		(3,907	)		(3,600	)
Net change in cash and cash equivalents		(408	)		38
Cash and cash equivalents at beginning of year		3,924			2,802
Cash and cash equivalents at end of year	$	3,516		$	2,840

Note 29 - Regulatory Matters

The Company is subject to various regulatory capital requirements administered by federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company must meet specific capital guidelines that involve quantitative measures of the Company’s assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting practices. The Company’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors.

Quantitative measures established by regulation to ensure capital adequacy require the Company to maintain minimum amounts and ratios (set forth in the table below) of total, Tier 1, and common equity Tier 1capital to risk-weighted assets, and of Tier 1 capital to average assets.

The following tables present actual and required capital ratios as of March 31, 2018 and December 31, 2017 for the Company and the Bank under Basel III Capital Rules. The minimum capital amounts presented include the minimum required capital levels as of March 31, 2018 (1.875%) and December 31, 2017 (1.25%) based on the then phased-in provisions of the Basel III Capital Rules and the minimum required capital levels as of January 1, 2019 when the Basel III Capital Rules have been fully phased-in. Capital levels required to be considered well capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules.

						Minimum Capital					Minimum Capital					Required to be
						Required – Basel III					Required – Basel III					Considered Well
	Actual					Phase-in Schedule					Fully Phased In					Capitalized
	Amount		Ratio			Amount		Ratio			Amount		Ratio			Amount		Ratio
	(dollars in thousands)
As of March 31, 2018:
Total Capital
(to Risk Weighted Assets):
Consolidated		$539,966		13.91	%	$	383,434		9.875	%	$	407,702		10.50	%		N/A		N/A
Tri Counties Bank		$536,894		13.83	%	$	383,261		9.875	%	$	407,518		10.50	%	$	388,112		10.00	%
Tier 1 Capital
(to Risk Weighted Assets):
Consolidated		$506,129		13.03	%	$	305,777		7.875	%	$	330,045		8.50	%		N/A		N/A
Tri Counties Bank		$503,057		12.96	%	$	305,638		7.875	%	$	329,895		8.50	%	$	310,490		8.00	%
Common equity Tier 1 Capital
(to Risk Weighted Assets):
Consolidated		$450,933		11.61	%	$	247,534		6.375	%	$	271,802		7.00	%		N/A		N/A
Tri Counties Bank		$503,057		12.96	%	$	247,421		6.375	%	$	271,678		7.00	%	$	252,273		6.50	%
Tier 1 Capital (to Average Assets):
Consolidated		$506,129		10.84	%	$	186,720		4.000	%	$	186,720		4.00	%		N/A		N/A
Tri Counties Bank		$503,057		10.78	%	$	186,716		4.000	%	$	186,716		4.00	%	$	233,395		5.00	%

41

Note 29 - Regulatory Matters (continued)

	Actual					Minimum Capital Required – Basel III Phase-in Schedule					Minimum Capital Required – Basel III Fully Phased In					Required to be Considered Well Capitalized
	Amount		Ratio			Amount		Ratio			Amount		Ratio			Amount		Ratio
	(dollars in thousands)
As of December 31, 2017:
Total Capital
(to Risk Weighted Assets):
Consolidated	$	528,805		14.07	%	$	347,694		9.25	%	$	394,679		10.50	%		N/A		N/A
Tri Counties Bank	$	525,384		13.98	%	$	347,535		9.25	%	$	394,499		10.50	%	$	375,713		10.00	%
Tier 1 Capital
(to Risk Weighted Assets):
Consolidated	$	495,318		13.18	%	$	272,517		7.25	%	$	319,502		8.50	%		N/A		N/A
Tri Counties Bank	$	491,897		13.09	%	$	272,392		7.25	%	$	319,356		8.50	%	$	300,570		8.00	%
Common equity Tier 1 Capital
(to Risk Weighted Assets):
Consolidated	$	440,643		11.72	%	$	216,134		5.75	%	$	263,120		7.00	%		N/A		N/A
Tri Counties Bank	$	491,897		13.09	%	$	216,035		5.75	%	$	262,999		7.00	%	$	244,214		6.50	%
Tier 1 Capital (to Average Assets):
Consolidated	$	495,318		10.80	%	$	183,400		4.00	%	$	183,400		4.00	%		N/A		N/A
Tri Counties Bank	$	491,897		10.73	%	$	183,394		4.00	%	$	183,394		4.00	%	$	229,243		5.00	%

As of March 31, 2018, capital levels at the Company and the Bank exceed all capital adequacy requirements under the Basel III Capital Rules on a fully phased-in basis. Also, at March 31, 2018 and December 31, 2017, the Bank’s capital levels exceeded the minimum amounts necessary to be considered well capitalized under the current regulatory framework for prompt corrective action.

Beginning January 1, 2016, the Basel III Capital Rules implemented a requirement for all banking organizations to maintain a capital conservation buffer above the minimum risk-based capital requirements in order to avoid certain limitations on capital distributions, stock repurchases and discretionary bonus payments to executive officers. The capital conservation buffer is exclusively composed of common equity tier 1 capital, and it applies to each of the risk-based capital ratios but not the leverage ratio. At March 31, 2018, the Company and the Bank are in compliance with the capital conservation buffer requirement. The three risk-based capital ratios will increase by 0.625% each year through 2019, at which point, the common equity tier 1 risk-based, tier 1 risk-based and total risk-based capital ratio minimums will be 7.0%, 8.5% and 10.5%, respectively.

Note 30 - Summary of Quarterly Results of Operations (unaudited)

The following table sets forth the results of operations for the periods indicated, and is unaudited; however, in the opinion of Management, it reflects all adjustments (which include only normal recurring adjustments) necessary to present fairly the summarized results for such periods.

	2018 Quarters Ended
	December 31,	September 30,	June 30,	March 31,
	(dollars in thousands, except per share data)
Interest and dividend income:
Loans:
Discount accretion PCI – cash basis				$	246
Discount accretion PCI – other					60
Discount accretion PNCI					326
All other loan interest income					37,417
Total loan interest income					38,049
Debt securities, dividends and interest bearing cash at banks (not FTE)					9,072
Total interest income					47,121
Interest expense					2,135
Net interest income					44,986
(Benefit from reversal of) provision for loan losses					(236	)
Net interest income after provision for loan losses					45,222
Noninterest income					12,290
Noninterest expense					38,162
Income before income taxes					19,350
Income tax expense					5,440
Net income				$	13,910
Per common share:
Net income (diluted)				$	0.60
Dividends				$	0.17

42

Note 30 - Summary of Quarterly Results of Operations (unaudited) (continued)

	2017 Quarters Ended
	December 31,		September 30,		June 30,			March 31,
	(dollars in thousands, except per share data)
Interest and dividend income:
Loans:
Discount accretion PCI – cash basis	$	516	$	398	$	386		$	112
Discount accretion PCI – other		445		407		797			631
Discount accretion PNCI		528		559		987			798
All other loan interest income		36,705		35,904		34,248			33,373
Total loan interest income		38,194		37,268		36,418			34,914
Debt securities, dividends and interest bearing cash at banks (not FTE)		8,767		8,645		8,626			8,570
Total interest income		46,961		45,913		45,044			43,484
Interest expense		1,868		1,829		1,610			1,491
Net interest income		45,093		44,084		43,434			41,993
Provision for (benefit from reversal of provision for) loan losses		1,677		765		(796	)		(1,557	)
Net interest income after provision for loan losses		43,416		43,319		44,230			43,550
Noninterest income		12,478		12,930		12,910			11,703
Noninterest expense		38,076		37,222		35,904			35,822
Income before income taxes		17,818		19,027		21,236			19,431
Income tax expense		14,829		7,130		7,647			7,352
Net income	$	2,989	$	11,897	$	13,589		$	12,079
Per common share:
Net income (diluted)	$	0.13	$	0.51	$	0.58		$	0.52
Dividends	$	0.17	$	0.17	$	0.17		$	0.15

43

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

General

As TriCo Bancshares (referred to in this report as “we”, “our” or the “Company”) has not commenced any business operations independent of Tri Counties Bank (the “Bank”), the following discussion pertains primarily to the Bank. Average balances, including such balances used in calculating certain financial ratios, are generally comprised of average daily balances for the Company. Within Management’s Discussion and Analysis of Financial Condition and Results of Operations, interest income, net interest income, net interest yield, and efficiency ratio are generally presented on a fully tax-equivalent (“FTE”) basis. The Company believes the use of these non-generally accepted accounting principles (non-GAAP) measures provides additional clarity in assessing its results, and the presentation of these measures on a FTE basis is a common practice within the banking industry. Interest income and net interest income are shown on a non-FTE basis in the Part I – Financial Information section of this Form 10-Q, and a reconciliation of the FTE and non-FTE presentations is provided below in the discussion of net interest income.

Critical Accounting Policies and Estimates

On January 1, 2018, the Company adopted several new accounting pronouncements. The Company adopted ASU No. 2014-09 “Revenue from Contracts with Customers (Topic 606)”, ASU No. 2016-01, “Recongition and Measurement of Financial Assets and Financial Liabilities”, and ASU 2018-02, “Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.”

The Company’s discussion and analysis of its financial condition and results of operations are based upon the Company’s consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States of America. The preparation of these financial statements requires the Company to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. On an on-going basis, the Company evaluates its estimates, including those that materially affect the financial statements and are related to the adequacy of the allowance for loan losses, investments, mortgage servicing rights, fair value measurements, retirement plans and intangible assets. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. The Company’s policies related to estimates on the allowance for loan losses, other than temporary impairment of investments and impairment of intangible assets, can be found in Note 1 in Item 1 of Part I of this report.

On March 18, 2016, Tri Counties Bank acquired three branches from Bank of America. The branches are located in the cities of Arcata, Eureka, and Fortuna in Humboldt County, California. The Bank paid $3,204,000 for deposit relationships with balances totaling $161,231,000 and loans with balances totaling $289,000. See “Results of Operations” and “Financial Condition” below and Note 2 in Item 1 of Part I of this report, for additional discussion about this transaction.

On October 3, 2014, TriCo acquired North Valley Bancorp. As part of the acquisition, North Valley Bank, a wholly-owned subsidiary of North Valley Bancorp, merged with and into Tri Counties Bank. TriCo issued an aggregate of approximately 6.58 million shares of TriCo common stock to North Valley Bancorp shareholders, which was valued at a total of approximately $151 million based on the closing trading price of TriCo common stock on October 3, 2014 of $21.73 per share. TriCo also assumed North Valley Bancorp’s obligations with respect to its outstanding trust preferred securities. North Valley Bank was a full-service commercial bank headquartered in Redding, California. North Valley Bank conducted a commercial and retail banking services which included accepting demand, savings, and money market rate deposit accounts and time deposits, and making commercial, real estate and consumer loans. North Valley Bank had $935 million in assets and 22 commercial banking offices in Shasta, Humboldt, Del Norte, Mendocino, Yolo, Sonoma, Placer and Trinity Counties in Northern California at June 30, 2014. Between January 7, 2015 and January 21, 2015, four Tri Counties Bank branches and four former North Valley Bank branches were consolidated into other Tri Counties Bank or other former North Valley Bank branches.

On September 23, 2011, the California Department of Financial Institutions closed Citizens Bank of Northern California (“Citizens”), Nevada City, California and appointed the FDIC as receiver. That same date, the Bank assumed the banking operations of Citizens from the FDIC under a whole bank purchase and assumption agreement without loss sharing.

On May 28, 2010, the Office of the Comptroller of the Currency closed Granite Community Bank, N.A. (“Granite”), Granite Bay, California and appointed the FDIC as receiver. That same date, the Bank assumed the banking operations of Granite from the FDIC under a whole bank purchase and assumption agreement with loss sharing. Under the terms of the loss sharing agreement, the FDIC will cover a substantial portion of any future losses on loans, related unfunded loan commitments, other real estate owned (OREO)/foreclosed assets and accrued interest on loans for up to 90 days. The FDIC absorbed 80% of losses and shared in 80% of loss recoveries on the covered assets acquired from Granite. The loss sharing arrangements for non-single family residential and single family residential loans had terms of 5 years and 10 years, respectively, and the loss recovery provisions had terms of 8 years and 10 years, respectively, from the acquisition date. On May 9, 2017, the Company and the FDIC terminated their loss sharing agreements. As part of the termination agreement, the Company paid the FDIC $184,000, and recorded a $712,000 gain representing the difference between the Company’s payment to the FDIC and the recorded payable balance on May 9, 2017.

The Company refers to loans and foreclosed assets that are covered by loss sharing agreements as “covered loans” and “covered foreclosed assets”, respectively. In addition, the Company refers to loans purchased or obtained in a business combination as “purchased credit impaired” (PCI) loans, or “purchased non-credit impaired” (PNCI) loans. The Company refers to loans that it originates as “originated” loans. Additional information regarding the Citizens and Granite Bank acquisitions can be found in Note 2 in Item 1 of Part I of this report. Additional information regarding the definitions and accounting for originated, PNCI and PCI loans can be found in Notes 1, 2, 4 and 5 in Item 1 of Part I of this report, and under the heading Asset Quality and Non-Performing Assets below.

44

Geographical Descriptions

For the purpose of describing the geographical location of the Company’s loans, the Company has defined northern California as that area of California north of, and including, Stockton; central California as that area of the State south of Stockton, to and including, Bakersfield; and southern California as that area of the State south of Bakersfield.

TRICO BANCSHARES

Financial Summary

(In thousands, except per share amounts; unaudited)

	Three months ended March 31,
	2018			2017
Net interest income (FTE)	$	45,298		$	42,618
Benefit from reversal of provision for loan losses		236			1,557
Noninterest income		12,290			11,703
Noninterest expense		(38,162	)		(35,822	)
Provision for income taxes (FTE)		(5,752	)		(7,977	)
Net income	$	13,910		$	12,079
Earnings per share:
Basic	$	0.61		$	0.53
Diluted	$	0.60		$	0.52
Per share:
Dividends paid	$	0.17		$	0.15
Book value at period end	$	22.01		$	21.28
Average common shares outstanding		22,956			22,870
Average diluted common shares outstanding		23,283			23,232
Shares outstanding at period end		22,956			22,873
At period end:
Loans, net	$	3,039,760		$	2,730,175
Total assets		4,779,957			4,527,954
Total deposits		4,084,404			3,898,884
Other borrowings		65,041			15,197
Junior subordinated debt		56,905			56,713
Shareholders’ equity		505,256			486,718
Financial Ratios:
During the period (annualized):
Return on assets		1.17	%		1.08	%
Return on equity		11.00	%		9.97	%
Net interest margin1		4.14	%		4.13	%
Efficiency ratio1		66.27	%		66.00	%
Average equity to average assets		10.67	%		10.79	%
At period end:
Equity to assets		10.57	%		10.75	%
Total capital to risk-adjusted assets		13.91	%		14.86	%

¹  Fully taxable equivalent (FTE)

45

Results of Operations

Overview

The following discussion and analysis is designed to provide a better understanding of the significant changes and trends related to the Company and the Bank’s financial condition, operating results, asset and liability management, liquidity and capital resources and should be read in conjunction with the Condensed Consolidated Financial Statements of the Company and the Notes thereto located at Item 1 of this report.

Following is a summary of the components of FTE net income for the periods indicated (in thousands):

	Three months ended March 31,
	2018			2017
Net interest income (FTE)	$	45,298		$	42,618
Benefit from reversal of provision for loan losses		236			1,557
Noninterest income		12,290			11,703
Noninterest expense		(38,162	)		(35,822	)
Provision for income taxes (FTE)		(5,752	)		(7,977	)
Net income	$	13,910		$	12,079

Net Interest Income

The Company’s primary source of revenue is net interest income, or the difference between interest income on interest-earning assets and interest expense on interest-bearing liabilities. Following is a summary of the components of net interest income for the periods indicated (dollars in thousands):

	Three months ended March 31,
	2018			2017
Interest income	$	47,121		$	43,484
Interest expense		(2,135	)		(1,491	)
FTE adjustment		312			625
Net interest income (FTE)	$	45,298		$	42,618
Net interest margin (FTE)		4.14	%		4.13	%
Purchased loan discount accretion	$	632		$	1,541
Effect of purchased loan discount accretion on net interest margin (FTE)		0.06	%		0.15	%
Effect of interest income recovered from sale of loans on net interest margin (FTE)		0.00	%		0.00	%

Net interest income (FTE) during the three months ended March 31, 2018 increased $2,680,000 (6.3%) to $45,298,000 compared to $42,618,000 during the three months ended March 31, 2017. The increase in net interest income (FTE) was due primarily to increases in the average balance of loans and investments that were partially offset by an increase in other borrowings, a 3 basis point decrease in yield on loans, and an 8 basis point increase in the average rate paid on interest-bearing liabilities compared to the three months ended March 31, 2017.    The 3 basis point decrease in loan yields from 5.06% during the three months ended March 31, 2017 to 5.03% during the three months ended March 31, 2018 was due to a decrease in purchased loan discount accretion from $1,541,000 during the three months ended March 31, 2017 to $632,000 during the three months ended March 31, 2018. This decrease in purchased loan discount accretion reduced loan yields by 14 basis points, and net interest margin by 9 basis points, but was substantially offset by increases in new and renewed loan yields due to increases in market yields. The 8 basis point increase in the average rate paid on interest-bearing liabilities was primarily due to increases in market rates that increased the rates the Company pays on its overnight borrowings and junior subordinated debt.

Also affecting net interest margin during the three months ended March 31, 2018, was the decrease in the Federal tax rate from 35% to 21%. This decrease in the Federal tax rate caused the fully tax-equivalent (FTE) yield on the Company’s nontaxable investments to decrease from 4.89% during the three months ended March 31, 2017 to 3.97% during the three months ended March 31, 2018, and resulted in net interest income (FTE) being $312,000, or 2 basis points, less than it otherwise would have been.

The negative impact on net interest margin from these decreases in average loan and nontaxable investments yields was offset by the positive impact of an increase in average loan balances and a decrease in the average balance of lower yielding interest earning cash compared to the year-ago quarter.

46

Summary of Average Balances, Yields/Rates and Interest Differential

The following table presents, for the periods indicated, information regarding the Company’s consolidated average assets, liabilities and shareholders’ equity, the amounts of interest income from average interest-earning assets and resulting yields, and the amount of interest expense paid on interest-bearing liabilities. Average loan balances include nonperforming loans. Interest income includes proceeds from loans on nonaccrual loans only to the extent cash payments have been received and applied to interest income. Yields on securities have been adjusted upward to reflect the effect of income thereon exempt from federal income taxation at the current statutory tax rate (dollars in thousands).

	For the three months ended
	March 31, 2018							March 31, 2017
	Average Balance		Interest Income/ Expense		Rates Earned /Paid			Average Balance		Interest Income/ Expense		Rates Earned /Paid
Assets:
Loans	$	3,028,178	$	38,049		5.03	%	$	2,758,544	$	34,914		5.06	%
Investment securities—taxable		1,125,394		7,658		2.72	%		1,038,229		7,094		2.73	%
Investment securities—nontaxable		136,160		1,353		3.97	%		136,290		1,666		4.89	%
Cash at Federal Reserve and other banks		90,864		373		1.64	%		197,406		435		0.88	%
Total interest-earning assets		4,380,596		47,433		4.33	%		4,130,469		44,109		4.27	%
Other assets		360,631							363,188
Total assets	$	4,741,227						$	4,493,657
Liabilities and shareholders’ equity:
Interest-bearing demand deposits	$	994,206		211		0.08	%	$	907,104		127		0.06	%
Savings deposits		1,371,377		411		0.12	%		1,376,048		424		0.12	%
Time deposits		306,514		474		0.62	%		331,789		343		0.41	%
Other borrowings		107,781		342		1.27	%		17,483		2		0.05	%
Junior subordinated debt		56,882		697		4.90	%		56,690		595		4.20	%
Total interest-bearing liabilities		2,836,760		2,135		0.30	%		2,689,114		1,491		0.22	%
Noninterest-bearing deposits		1,332,235							1,247,852
Other liabilities		66,219							71,880
Shareholders’ equity		506,013							484,811
Total liabilities and shareholders’ equity	$	4,741,227						$	4,493,657
Net interest spread(1)						4.03	%						4.05	%
Net interest income and interest margin(2)			$	45,298		4.14	%			$	42,618		4.13	%

⁽¹⁾  Net interest spread represents the average yield earned on interest-earning assets minus the average rate paid on interest-bearing liabilities.    

⁽²⁾  Net interest margin is computed by calculating the difference between interest income and interest expense, divided by the average balance of interest-earning assets.    

Summary of Changes in Interest Income and Expense due to Changes in Average Asset and Liability Balances and Yields Earned and Rates Paid

The following table sets forth a summary of the changes in interest income and interest expense from changes in average asset and liability balances (volume) and changes in average interest rates for the periods indicated. Changes not solely attributable to volume or rates have been allocated in proportion to the respective volume and rate components (in thousands).

	Three months ended March 31, 2018 compared with three months ended March 31, 2017
	Volume			Rate			Total
Increase (decrease) in interest income:
Loans	$	3,411		$	(276	)	$	3,135
Investment securities		593			(342	)		251
Cash at Federal Reserve and other banks		(234	)		172			(62	)
Total interest-earning assets		3,770			(446	)		3,324
Increase (decrease) in interest expense:
Interest-bearing demand deposits		13			71			84
Savings deposits		(1	)		(12	)		(13	)
Time deposits		(26	)		157			131
Other borrowings		11			329			340
Junior subordinated debt		2			100			102
Total interest-bearing liabilities		(1	)		645			644
Increase (decrease) in net interest income	$	3,771		$	(1,091	)	$	2,680

47

Provision for Loan Losses

The provision for loan losses during any period is the sum of the allowance for loan losses required at the end of the period and any loan charge offs during the period, less the allowance for loan losses required at the beginning of the period, and less any loan recoveries during the period. See the Tables labeled “Allowance for loan losses – three months ended March 31, 2018 and 2017” at Note 5 in Item 1 of Part I of this report for the components that make up the provision for loan losses for the three months ended March 31, 2018 and 2017.

The Company recorded a reversal of provision for loan losses of $236,000 during the three months ended March 31, 2018 compared to a reversal of provision for loan losses of $1,557,000 during the three months ended March 31, 2017. The $236,000 reversal of provision for loan losses during the three months ended March 31, 2018 was due primarily to a decrease in the balance of performing/unimpaired but substandard loans during the three months ended March 31, 2018. Nonperforming loans were $24,381,000, or 0.79% of loans outstanding as of March 31, 2018, compared to $24,394,000, or 0.81% of loans outstanding as of December 31, 2017, and $19,511,000, or 0.71% of loans outstanding as of March 31, 2017. Net loan charge-offs during the three months ended March 31, 2018 were $114,000.

As shown in the table labeled “Allowance for Loan Losses—three months ended March 31, 2018” at Note 5 in Item 1 of Part I of this report, all categories of loans except residential real estate mortgage loans, home equity lines, and home equity loans loans experienced a provision for loan losses during the three months ended March 31, 2018. The level of provision, or reversal of provision, for loan losses of each loan category during the three months ended March 31, 2018 was due primarily to the increase or decrease in the required allowance for loan losses as of March 31, 2018 when compared to the required allowance for loan losses as of December 31, 2017 plus or minus net charge-offs or net recoveries during the three months ended March 31, 2018. All categories of loans except commercial real estate mortgage, and residential and commercial construction loans experienced a decrease in the required allowance for loan losses during the three months ended March 31, 2018. The decrease in the required allowance for loan losses for all loan categories except commercial real estate mortgage, and residential and commercial construction loans was due primarily to stable or improving estimated cash flows and collateral values for certain impaired originated and purchased loans, and continued low net charge off rates in many loan categories. The increase in the required allowance for loan losses for commercial real estate mortgage, and residential and commercial construction loans was due primarily to increased loan balances in these categories.    The increases and decreases in estimated cash flows and collateral values, and changes in historical loss factors, in part, determine the required loan loss allowance for nonperforming and performing loans in accordance with the Company’s allowance for loan losses methodology as described under the heading “Loans and Allowance for Loan Losses” at Note 1 in Item 1 of Part I of this report. For details of the change in nonperforming loans during the three months ended March 31, 2018 see the Tables, and associated narratives, labeled “Changes in nonperforming assets during the three months ended March 31, 2018” under the heading “Asset Quality and Non-Performing Assets” below.

The provision for loan losses related to originated and PNCI loans is based on management’s evaluation of inherent risks in these loan portfolios and a corresponding analysis of the allowance for loan losses.    The provision for loan losses related to PCI loan portfolio is based on changes in estimated cash flows expected to be collected on PCI loans. Additional discussion on loan quality, our procedures to measure loan impairment, and the allowance for loan losses is provided under the heading “Asset Quality and Non-Performing Assets” below.

Management re-evaluates the loss ratios and other assumptions used in its calculation of the allowance for loan losses for its originated and PNCI loan portfolios on a quarterly basis and makes changes as appropriate based upon, among other things, changes in loss rates experienced, collateral support for underlying loans, changes and trends in the economy, and changes in the loan mix. Management also re-evaluates expected cash flows used in its accounting for its PCI loan portfolio, including any required allowance for loan losses, on a quarterly basis and makes changes as appropriate based upon, among other things, changes in loan repayment experience, changes in loss rates experienced, and collateral support for underlying loans.

48

Noninterest Income

The following table summarizes the Company’s noninterest income for the periods indicated (in thousands):

	Three months ended March 31,
	2018		2017
Service charges on deposit accounts	$	3,779	$	3,619
ATM fees and interchange		4,235		4,015
Other service fees		714		765
Mortgage banking service fees		517		521
Change in value of mortgage servicing rights		111		(13	)
Total service charges and fees		9,356		8,907
Gain on sale of loans		626		910
Commissions on sale of nondeposit investment products		876		607
Increase in cash value of life insurance		608		685
Change in indemnification asset		—		(221	)
Gain on disposition of foreclosed assets		371		118
Other noninterest income		453		697
Total noninterest income	$	12,290	$	11,703

Noninterest income increased $587,000 (5.0%) to $12,290,000 during the three months ended March 31, 2018 compared to the three months ended March 31, 2017. The increase in noninterest income was due to the changes noted in the table above. The $269,000 increase in commissions on nondeposit investment products was due to continued focus in this area. The $253,000 increase in gain on sale of foreclosed assets was due to the sale of six foreclosed properties each of which had increases in property values since they were foreclosed. The $221,000 increase in change in indemnification asset was due to a $221,000 decrease in the indemnification asset during the first quarter of 2017, and no change during the first quarter of 2018 as the Company and the FDIC terminated their loss sharing agreements during the second quarter of 2017. The $220,000 increase in ATM fees and interchange revenue was due primarily to increased interchange revenue. The $160,000 increase in service charges on deposit accounts was due primarily to increased monthly service charges that were partially offset by decrease nonsufficient funds fees. The $284,000 decrease in gain on sale of loans was due primarily to decreased residential mortgage refinance activity compared to the year-ago quarter. The $244,000 decrease in other noninterest income was due primarily to a decrease in lease brokerage revenue.

49

Noninterest Expense

The following table summarizes the Company’s noninterest expense for the periods indicated (dollars in thousands):

	Three months ended March 31,
	2018			2017
Service charges on deposit accounts	$	3,779		$	3,619
ATM fees and interchange		4,235			4,015
Other service fees		714			765
Mortgage banking service fees		517			521
Change in value of mortgage servicing rights		111			(13	)
Total service charges and fees		9,356			8,907
Gain on sale of loans		626			910
Commissions on sale of nondeposit investment products		876			607
Increase in cash value of life insurance		608			685
Change in indemnification asset		—			(221	)
Gain on disposition of foreclosed assets		371			118
Other noninterest income		453			697
Total noninterest income	$	12,290		$	11,703
	Three months ended March 31,
	2018			2017
Base salaries, net of deferred loan origination costs	$	13,962		$	13,390
Incentive compensation		2,452			2,198
Benefits and other compensation costs		5,238			5,305
Total salaries and benefits expense		21,652			20,893
Occupancy		2,681			2,692
Equipment		1,551			1,723
Data processing and software		2,514			2,396
ATM and POS network charges		1,226			853
Telecommunications		701			643
Postage		358			404
Courier service		267			254
Advertising		838			967
Assessments		430			405
Operational losses		294			435
Professional fees		773			766
Foreclosed assets expense		24			38
Foreclosed asset losses (reversals)		90			(66	)
Change in reserve for unfunded commitments		700			15
Intangible amortization		339			359
Merger and acquisition expense		476			—
Other miscellaneous expense		3,248			3,045
Total other noninterest expense		16,510			14,929
Total noninterest expense	$	38,162		$	35,822
Merger and acquisition expense:
Professional fees	$	355		$	—
Advertising and marketing		8			—
Other miscellaneous expense		113			—
Total merger and acquisition expense	$	476		$	—
Average full time equivalent staff		1,002			1,015
Noninterest expense to revenue (FTE)		66.3	%		65.9	%

50

Salary and benefit expenses increased $759,000 (3.6%) to $21,652,000 during the three months ended March 31, 2018 compared to $20,893,000 during the three months ended March 31, 2017. Base salaries, net of deferred loan origination costs increased $572,000 (4.3%) to $13,962,000.    The increase in base salaries was due to annual merit increases, and the addition of employees with base salaries above the average base salary that were partially offset by a 1.3% decrease in average full time equivalent employees to 1,002 from 1,015 in the year-ago quarter. Commissions and incentive compensation increased $254,000 (11.6%) to $2,452,000 during the three months ended March 31, 2018 compared to the year-ago quarter due primarily to increases in management, back-office and nondeposit investment product sales incentives that were partially offset by decreased commissions on loans and other sales incentives. Benefits & other compensation expense decreased $67,000 (1.3%) to $5,238,000 during the three months ended March 31, 2018 due primarily to decreases in group medical, workers compensation insurance, retirement (ESOP) expenses, that were partially offset by an increase in employer payroll tax expense.    

Other noninterest expense increased $1,581,000 (10.6%) to $16,510,000 during the three months ended March 31, 20018 compared to the three months ended March 31, 2017.    The increase in other noninterest expense was due to the changes noted in the table above. The $685,000 increase in change in reserve for unfunded commitments was due to an increase in unfunded construction loan commitments. The $118,000 and $373,000 increases in data processing and software expense and ATM & POS network charges, respectively, were due primarily to system enhancements and capacity expansion. The $172,000 decrease in equipment expense was due to decreased equipment rental, repair and maintenance. During the three months ended March 31, 2018, the Company incurred $476,000 of merger related expense associated with the proposed merger with FNBB of which $343,000 is nondeductible for tax purposes.

Income Taxes

The effective combined Federal and State income tax rate on income was 28.1% and 37.8% for the three months ended March 31, 2018 and 2017, respectively. This decrease in effective combined Federal and State income tax rate was due primarily to a decrease in the Federal tax rate from 35% to 21% effective January 1, 2018. The effective combined Federal and State income tax rate was greater than the Federal statutory tax rate due to State income tax expense of $2,207,000 and $2,134,000, for the three months ended March 31, 2018 and 2017, respectively, that were partially offset by the effects of tax-exempt income of $1,041,000 and $1,041,000, respectively, from investment securities, $608,000 and $792,000, respectively, from increase in cash value of life insurance, low-income housing tax credits of $190,000 and $121,000, respectively, $1,000 and $90,000, respectively, of equity compensation excess tax benefits, and $343,000 of nondeductible merger expense during the three months ended March 31, 2018. The low income housing tax credits and the equity compensation excess tax benefits represent direct reductions in tax expense.

Financial Condition

Investment Securities

Investment securities available for sale increased $7,950,000 to $735,895,000 as of March 31, 2018, compared to December 31, 2017. This increase is attributable to purchases of $39,647,000, maturities and principal repayments of $15,643,000, a decrease in fair value of investments securities available for sale of $15,628,000 and amortization of net purchase price premiums of $426,000.

The following table presents the available for sale investment securities portfolio by major type as of March 31, 2018 and December 31, 2017:

(dollars in thousands)	March 31, 2018					December 31, 2017
	Fair Value		%			Fair Value		%
Debt securities available for sale:
Obligations of U.S. government corporations and agencies	$	616,657		83.8	%	$	604,789		83.1	%
Obligations of states and political subdivisions		119,238		16.2	%		123,156		16.9	%
Total debt securities available for sale	$	735,895		100.0	%	$	727,945		100.0	%

Investment securities held to maturity decreased $18,809,000 to $496,035,000 as of March 31, 2018, compared to December 31, 2017. This decrease is attributable to principal repayments of $18,535,000, and amortization of net purchase price premiums of $274,000.

The following table presents the held to maturity investment securities portfolio by major type as of March 31, 2018 and December 31, 2017:

(dollars in thousands)	March 31, 2018					December 31, 2017
	Cost Basis		%			Cost Basis		%
Securities held to maturity:
Obligations of U.S. government corporations and agencies	$	481,457		97.1	%	$	500,271		97.2	%
Obligations of states and political subdivisions		14,578		2.90	%		14,573		2.80	%
Total securities held to maturity	$	496,035		100	%	$	514,844		100.0	%

Additional information about the investment portfolio is provided in Note 3 of the Notes to Unaudited Condensed Consolidated Financial Statements at Item 1 of Part I of this report.

Restricted Equity Securities

Restricted equity securities were $16,956,000 at March 31, 2018 and December 31, 2017. The entire balance of restricted equity securities at March 31, 2018 and December 31, 2017 represent the Bank’s investment in the Federal Home Loan Bank of San Francisco (“FHLB”).

Additional information about the restricted equity securities is provided in Note 1 of the Notes to Unaudited Condensed Consolidated Financial Statements at Item 1 of Part I of this report.

51

Loans

The Bank concentrates its lending activities in four principal areas: real estate mortgage loans (residential and commercial loans), consumer loans, commercial loans (including agricultural loans), and real estate construction loans. The interest rates charged for the loans made by the Bank vary with the degree of risk, the size and maturity of the loans, the borrower’s relationship with the Bank and prevailing money market rates indicative of the Bank’s cost of funds.

The majority of the Bank’s loans are direct loans made to individuals, farmers and local businesses. The Bank relies substantially on local promotional activity and personal contacts by bank officers, directors and employees to compete with other financial institutions. The Bank makes loans to borrowers whose applications include a sound purpose, a viable repayment source and a plan of repayment established at inception and generally backed by a secondary source of repayment.

The following table shows the Company’s loan balances, including net deferred loan costs, as of the dates indicated:

(in thousands)	March 31, 2018		December 31, 2017
Real estate mortgage	$	2,359,379	$	2,300,322
Consumer		348,789		356,874
Commercial		216,015		220,412
Real estate construction		145,550		137,557
Total loans	$	3,069,733	$	3,015,165

At March 31, 2018 loans, including net deferred loan costs, totaled $3,069,733,000 which was a $54,568,000 (1.8%) increase over the balances at December 31, 2017. Demand for all categories of loans was moderate during the three months ended March 31, 2018.

The following table shows the Company’s loan balances, including net deferred loan costs, as a percentage of total loans for the periods indicated:

	March 31, 2018			December 31, 2017
Real estate mortgage		76.9	%		76.3	%
Consumer		11.4	%		11.8	%
Commercial		7.0	%		7.3	%
Real estate construction		4.7	%		4.6	%
Total loans		100	%		100	%

Assets Quality and Nonperforming Assets                

Nonperforming Assets                

Loans originated by the Company, i.e., not purchased or acquired in a business combination, are referred to as originated loans. Originated loans are reported at the principal amount outstanding, net of deferred loan fees and costs. Loan origination and commitment fees and certain direct loan origination costs are deferred, and the net amount is amortized as an adjustment of the related loan’s yield over the actual life of the loan. Originated loans on which the accrual of interest has been discontinued are designated as nonaccrual loans.

Originated loans are placed in nonaccrual status when reasonable doubt exists as to the full, timely collection of interest or principal, or a loan becomes contractually past due by 90 days or more with respect to interest or principal and is not well secured and in the process of collection. When an originated loan is placed on nonaccrual status, all interest previously accrued but not collected is reversed.    Income on such loans is then recognized only to the extent that cash is received and where the future collection of principal is probable. Interest accruals are resumed on such loans only when they are brought fully current with respect to interest and principal and when, in the judgment of management, the loan is estimated to be fully collectible as to both principal and interest.

An allowance for loan losses for originated loans is established through a provision for loan losses charged to expense. Originated loans and deposit related overdrafts are charged against the allowance for loan losses when management believes that the collectability of the principal is unlikely or, with respect to consumer installment loans, according to an established delinquency schedule. The allowance is an amount that management believes will be adequate to absorb probable losses inherent in existing loans and leases, based on evaluations of the collectability, impairment and prior loss experience of loans and leases. The evaluations take into consideration such factors as changes in the nature and size of the portfolio, overall portfolio quality, loan concentrations, specific problem loans, and current economic conditions that may affect the borrower’s ability to pay. The Company defines an originated loan as impaired when it is probable the Company will be unable to collect all amounts due according to the original contractual terms of the loan agreement. Impaired originated loans are measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate. As a practical expedient, impairment may be measured based on the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. When the measure of the impaired loan is less than the recorded investment in the loan, the impairment is recorded through a valuation allowance.

52

In situations related to originated loans where, for economic or legal reasons related to a borrower’s financial difficulties, the Company grants a concession for other than an insignificant period of time to the borrower that the Company would not otherwise consider, the related loan is classified as a troubled debt restructuring (TDR). The Company strives to identify borrowers in financial difficulty early and work with them to modify to more affordable terms before their loan reaches nonaccrual status. These modified terms may include rate reductions, principal forgiveness, payment forbearance and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of the collateral. In cases where the Company grants the borrower new terms that result in the loan being classified as a TDR, the Company measures any impairment on the restructuring as noted above for impaired loans. TDR loans are classified as impaired until they are fully paid off or charged off. Loans that are in nonaccrual status at the time they become TDR loans, remain in nonaccrual status until the borrower demonstrates a sustained period of performance which the Company generally believes to be six consecutive months of payments, or equivalent. Otherwise, TDR loans are subject to the same nonaccrual and charge-off policies as noted above with respect to their restructured principal balance.

Credit risk is inherent in the business of lending. As a result, the Company maintains an allowance for loan losses to absorb losses inherent in the Company’s originated loan portfolio. This is maintained through periodic charges to earnings. These charges are included in the Consolidated Statements of Income as provision for loan losses. All specifically identifiable and quantifiable losses are immediately charged off against the allowance. However, for a variety of reasons, not all losses are immediately known to the Company and, of those that are known, the full extent of the loss may not be quantifiable at that point in time. The balance of the Company’s allowance for originated loan losses is meant to be an estimate of these unknown but probable losses inherent in the portfolio.

The Company formally assesses the adequacy of the allowance for originated loan losses on a quarterly basis. Determination of the adequacy is based on ongoing assessments of the probable risk in the outstanding originated loan portfolio, and to a lesser extent the Company’s originated loan commitments. These assessments include the periodic re-grading of credits based on changes in their individual credit characteristics including delinquency, seasoning, recent financial performance of the borrower, economic factors, changes in the interest rate environment, growth of the portfolio as a whole or by segment, and other factors as warranted. Loans are initially graded when originated. They are re-graded as they are renewed, when there is a new loan to the same borrower, when identified facts demonstrate heightened risk of nonpayment, or if they become delinquent. Re-grading of larger problem loans occurs at least quarterly. Confirmation of the quality of the grading process is obtained by independent credit reviews conducted by consultants specifically hired for this purpose and by various bank regulatory agencies.

The Company’s method for assessing the appropriateness of the allowance for originated loan losses includes specific allowances for impaired originated loans and leases, formula allowance factors for pools of credits, and allowances for changing environmental factors (e.g., interest rates, growth, economic conditions, etc.). Allowance factors for loan pools were based on historical loss experience by product type and prior risk rating.

Loans purchased or acquired in a business combination are referred to as acquired loans. Acquired loans are valued as of acquisition date in accordance with Financial Accounting Standards Board Accounting Standards Codification (“FASB ASC”) Topic 805, Business Combinations. Loans acquired with evidence of credit deterioration since origination for which it is probable that all contractually required payments will not be collected are referred to as purchased credit impaired (PCI) loans. PCI loans are accounted for under FASB ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality. Under FASB ASC Topic 805 and FASB ASC Topic 310-30, PCI loans are recorded at fair value at acquisition date, factoring in credit losses expected to be incurred over the life of the loan. Accordingly, an allowance for loan losses is not carried over or recorded as of the acquisition date. Fair value is defined as the present value of the future estimated principal and interest payments of the loan, with the discount rate used in the present value calculation representing the estimated effective yield of the loan. Default rates, loss severity, and prepayment speed assumptions are periodically reassessed and our estimate of future payments is adjusted accordingly. The difference between contractual future payments and estimated future payments is referred to as the nonaccretable difference. The difference between estimated future payments and the present value of the estimated future payments is referred to as the accretable yield. The accretable yield represents the amount that is expected to be recorded as interest income over the remaining life of the loan. If after acquisition, the Company determines that the estimated future cash flows of a PCI loan are expected to be more than the originally estimated, an increase in the discount rate (effective yield) would be made such that the newly increased accretable yield would be recognized, on a level yield basis, over the remaining estimated life of the loan. If, after acquisition, the Company determines that the estimated future cash flows of a PCI loan are expected to be less than the previously estimated, the discount rate would first be reduced until the present value of the reduced cash flow estimate equals the previous present value however, the discount rate may not be lowered below its original level at acquisition. If the discount rate has been lowered to its original level and the present value has not been sufficiently lowered, an allowance for loan loss would be established through a provision for loan losses charged to expense to decrease the present value to the required level. If the estimated cash flows improve after an allowance has been established for a loan, the allowance may be partially or fully reversed depending on the improvement in the estimated cash flows. Only after the allowance has been fully reversed may the discount rate be increased. PCI loans are put on nonaccrual status when cash flows cannot be reasonably estimated. PCI loans on nonaccrual status are accounted for using the cost recovery method or cash basis method of income recognition. PCI loans are charged off when evidence suggests cash flows are not recoverable. Foreclosed assets from PCI loans are recorded in foreclosed assets at fair value with the fair value at time of foreclosure representing cash flow from the loan. ASC 310-30 allows PCI loans with similar risk characteristics and acquisition time frame to be “pooled” and have their cash flows aggregated as if they were one loan. The Company elected to use the “pooled” method of ASC 310-30 for PCI – other loans in the acquisition of certain assets and liabilities of Granite and Citizens.

Acquired loans that are not PCI loans are referred to as purchased not credit impaired (PNCI) loans. PNCI loans are accounted for under FASB ASC Topic 310-20, Receivables – Nonrefundable Fees and Other Costs, in which interest income is accrued on a level-yield basis for performing loans. For income recognition purposes, this method assumes that all contractual cash flows will be collected, and no allowance for loan losses is established at the time of acquisition. Post-acquisition date, an allowance for loan losses may need to be established for acquired loans through a provision charged to earnings for credit losses incurred subsequent to acquisition. Under ASC 310-20, the loss would be measured based on the probable shortfall in relation to the contractual note requirements, consistent with our allowance for loan loss policy for similar loans.

When referring to PNCI and PCI loans we use the terms “nonaccretable difference”, “accretable yield”, or “purchase discount”. Nonaccretable difference is the difference between undiscounted contractual cash flows due and undiscounted cash flows we expect to collect, or put another way, it is the undiscounted contractual cash flows we do not expect to collect. Accretable yield is the difference between undiscounted cash flows we expect to collect and the value at which we have recorded the loan on our financial statements. On the date of acquisition, all purchased loans are recorded on our consolidated financial statements at estimated fair value. Purchase discount is the difference between the estimated fair value of loans on the

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date of acquisition and the principal amount owed by the borrower, net of charge offs, on the date of acquisition. We may also refer to “discounts to principal balance of loans owed, net of charge-offs”. Discounts to principal balance of loans owed, net of charge-offs is the difference between principal balance of loans owed, net of charge-offs, and loans as recorded on our financial statements. Discounts to principal balance of loans owed, net of charge-offs arise from purchase discounts, and equal the purchase discount on the acquisition date.

Originated loans and PNCI loans are reviewed on an individual basis for reclassification to nonaccrual status when any one of the following occurs: the loan becomes 90 days past due as to interest or principal, the full and timely collection of additional interest or principal becomes uncertain, the loan is classified as doubtful by internal credit review or bank regulatory agencies, a portion of the principal balance has been charged off, or the Company takes possession of the collateral. Loans that are placed on nonaccrual even though the borrowers continue to repay the loans as scheduled are classified as “performing nonaccrual” and are included in total nonperforming loans. The reclassification of loans as nonaccrual does not necessarily reflect management’s judgment as to whether they are collectible.

Interest income on originated nonaccrual loans that would have been recognized during the months ended March 31, 2018 and 2017, if all such loans had been current in accordance with their original terms, totaled $285,000 and $188,000, respectively. Interest income actually recognized on these originated loans during the three months ended March 31, 2018 and 2017 was $22,000 and $2,000, respectively. Interest income on PNCI nonaccrual loans that would have been recognized during the three months ended March 31, 2018 and 2017, if all such loans had been current in accordance with their original terms, totaled $27,000 and $37,000, respectively. Interest income actually recognized on these PNCI loans during the three months ended March 31, 2018 and 2017 was $0.

The Company’s policy is to place originated loans and PNCI loans 90 days or more past due on nonaccrual status. In some instances when an originated loan is 90 days past due Management does not place it on nonaccrual status because the loan is well secured and in the process of collection. A loan is considered to be in the process of collection if, based on a probable specific event, it is expected that the loan will be repaid or brought current. Generally, this collection period would not exceed 30 days. Loans where the collateral has been repossessed are classified as foreclosed assets. Management considers both the adequacy of the collateral and the other resources of the borrower in determining the steps to be taken to collect nonaccrual loans. Alternatives that are considered are foreclosure, collecting on guarantees, restructuring the loan or collection lawsuits.

The following table sets forth the amount of the Bank’s nonperforming assets as of the dates indicated. For purposes of the following table, “PCI – other” loans that are 90 days past due and still accruing are not considered nonperforming loans. “Performing nonaccrual loans” are loans that may be current for both principal and interest payments, or are less than 90 days past due, but for which payment in full of both principal and interest is not expected, and are not well secured and in the process of collection:

(dollars in thousands)	March 31, 2018			December 31, 2017
Performing nonaccrual loans	$	19,669		$	20,937
Nonperforming nonaccrual loans		4,712			3,176
Total nonaccrual loans		24,381			24,113
Originated and PNCI loans 90 days past due and still accruing		—			281
Total nonperforming loans		24,381			24,394
Foreclosed assets		1,564			3,226
Total nonperforming assets	$	25,945		$	27,620
Nonperforming assets to total assets		0.54	%		0.58	%
Nonperforming loans to total loans		0.79	%		0.81	%
Allowance for loan losses to nonperforming loans		123	%		124	%
Allowance for loan losses, unamortized loan fees, and discounts to loan principal balances owed		1.74	%		1.77	%

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The following table set forth the amount of the Bank’s nonperforming assets as of the dates indicated. For purposes of the following table, “PCI – other” loans that are 90 days past due and still accruing are not considered nonperforming loans. “Performing nonaccrual loans” are loans that may be current for both principal and interest payments, or are less than 90 days past due, but for which payment in full of both principal and interest is not expected, and are not well secured and in the process of collection:

	March 31, 2018
(dollars in thousands)	Originated			PNCI			PCI – cash basis			PCI - other			Total
Performing nonaccrual loans	$	12,040		$	1,537		$	1,606		$	4,486		$	19,669
Nonperforming nonaccrual loans		4,040			174			13			485			4,712
Total nonaccrual loans		16,080			1,711			1,619			4,971			24,381
Originated and PNCI loans 90 days past due and still accruing		—			—			—			—			—
Total nonperforming loans		16,080			1,711			1,619			4,971			24,381
Foreclosed assets		583			—			—			981			1,564
Total nonperforming assets	$	16,663		$	1,711		$	1,619		$	5,952		$	25,945
U.S. government, including its agencies and its government-sponsored agencies, guaranteed portion of nonperforming loans	$	452			—			—			—		$	452
Nonperforming assets to total assets		0.35	%		0.04	%		0.03	%		0.12	%		0.54	%
Nonperforming loans to total loans		0.52	%		0.06	%		0.05	%		0.16	%		0.79	%
Allowance for loan losses to nonperforming loans		181	%		44	%		0	%		3	%		123	%
Allowance for loan losses, unamortized loan fees, and discounts to loan principal balances owed		1.40	%		2.46	%		68.82	%		23.76	%		1.74	%

The following table set forth the amount of the Bank’s nonperforming assets as of the dates indicated. For purposes of the following table, “PCI – other” loans that are 90 days past due and still accruing are not considered nonperforming loans. “Performing nonaccrual loans” are loans that may be current for both principal and interest payments, or are less than 90 days past due, but for which payment in full of both principal and interest is not expected, and are not well secured and in the process of collection:

	December 31, 2017
(dollars in thousands)	Originated			PNCI			PCI – cash basis			PCI - other			Total
Performing nonaccrual loans	$	12,942		$	1,305		$	2,056		$	4,634		$	20,937
Nonperforming nonaccrual loans		2,520			158			13			485			3,176
Total nonaccrual loans		15,462			1,463			2,069			5,119			24,113
Originated loans 90 days past due and still accruing		—			281			—			—			281
Total nonperforming loans		15,462			1,744			2,069			5,119			24,394
Noncovered foreclosed assets		1,836			—			—			1,390			3,226
Covered foreclosed assets		—			—			—			—			—
Total nonperforming assets	$	17,298		$	1,744		$	2,069		$	6,509		$	27,620
U.S. government, including its agencies and its government-sponsored agencies, guaranteed portion of nonperforming loans	$	358											$	358
Nonperforming assets to total assets		0.36	%		0.04	%		0.04	%		0.14	%		0.58	%
Nonperforming loans to total loans		0.57	%		0.56	%		100	%		37.94	%		0.81	%
Allowance for loan losses to nonperforming loans		188	%		53	%		1	%		5	%		124	%
Allowance for loan losses, unamortized loan fees, and discounts to loan principal balances owed		0.32	%		2.22	%		64.71	%		22.1	%		1.77	%

Changes in nonperforming assets during the three months ended March 31, 2018

(in thousands):	Balance at March 31, 2018		New NPA		Advances/ Capitalized Costs	Pay-downs /Sales/ Upgrades			Charge-offs/ Write-downs			Transfers to Foreclosed Assets	Category Changes			Balance at December 31, 2017
Real estate mortgage:
Residential	$	4,203	$	506		$	(206	)					$	164		$	3,739
Commercial		11,480		385			(823	)						98			11,820
Consumer
Home equity lines		2,924		562			(876	)	$	(80	)			(164	)		3,482
Home equity loans		1,718		143			(60	)		(1	)						1,636
Other consumer		37		113			(4	)		(83	)						11
Commercial		4,019		1,141			(525	)		(205	)			(98	)		3,706
Construction:
Residential
Commercial
Total nonperforming loans		24,381		2,850			(2,494	)		(369	)						24,394
Foreclosed assets		1,564					(1,572	)		(90	)						3,226
Total nonperforming assets	$	25,945	$	2,850		$	(4,066	)	$	(459	)	$				$	27,620

The table above does not include deposit overdraft charge-offs.

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Nonperforming assets decreased during the first quarter of 2018 by $1,676,000 (6.1%) to $25,945,000 at March 31, 2018 compared to $27,620,000 at December 31, 2017. The decrease in nonperforming assets during the first quarter of 2018 was primarily the result of sales or upgrades of nonperforming loans to performing status totaling $2,494,000, dispositions of foreclosed assets totaling $1,572,000, loan charge-offs of $369,000, and write-downs on foreclosed assets totaling $90,000, that were partially offset by new nonperforming loans of $2,850,000.

The $2,850,000 in new nonperforming loans during the first quarter of 2018 was comprised of increases of $506,000 on six residential real estate loans, $385,000 on one commercial real estate loan, $705,000 on 14 home equity lines and loans, $113,000 on 20 consumer loans, and $1,141,000 on 14 C&I loans. Related charge-offs are discussed below.

Loan charge-offs during the three months ended March 31, 2018

In the first quarter of 2018, the Company recorded $369,000 in loan charge-offs and $111,000 in deposit overdraft charge-offs less $296,000 in loan recoveries and $70,000 in deposit overdraft recoveries resulting in $114,000 of net charge-offs. Primary causes of the loan charges taken in the first quarter of 2018 were gross charge-offs of $81,000 on three home equity lines and loans, $83,000 on 19 other consumer loans, and $205,000 on seven C&I loans.

Total charge-offs were generally comprised of individual charges of less than $250,000 each. Generally losses are triggered by non-performance by the borrower and calculated based on any difference between the current loan amount and the current value of the underlying collateral less any estimated costs associated with the disposition of the collateral.

Allowance for Loan Losses

The Company’s allowance for loan losses is comprised of allowances for originated, PNCI and PCI loans. All such allowances are established through a provision for loan losses charged to expense.

Originated and PNCI loans, and deposit related overdrafts are charged against the allowance for originated loan losses when Management believes that the collectability of the principal is unlikely or, with respect to consumer installment loans, according to an established delinquency schedule. The allowances for originated and PNCI loan losses are amounts that Management believes will be adequate to absorb probable losses inherent in existing originated loans, based on evaluations of the collectability, impairment and prior loss experience of those loans and leases. The evaluations take into consideration such factors as changes in the nature and size of the portfolio, overall portfolio quality, loan concentrations, specific problem loans, and current economic conditions that may affect the borrower’s ability to pay. The Company defines an originated or PNCI loan as impaired when it is probable the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. Impaired originated and PNCI loans are measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate. As a practical expedient, impairment may be measured based on the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. When the measure of the impaired loan is less than the recorded investment in the loan, the impairment is recorded through a valuation allowance.

In situations related to originated and PNCI loans where, for economic or legal reasons related to a borrower’s financial difficulties, the Company grants a concession for other than an insignificant period of time to the borrower that the Company would not otherwise consider, the related loan is classified as a troubled debt restructuring (TDR). The Company strives to identify borrowers in financial difficulty early and work with them to modify to more affordable terms before their loan reaches nonaccrual status. These modified terms may include rate reductions, principal forgiveness, payment forbearance and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of the collateral. In cases where the Company grants the borrower new terms that provide for a reduction of either interest or principal, the Company measures any impairment on the restructuring as noted above for impaired loans. TDR loans are classified as impaired until they are fully paid off or charged off. Loans that are in nonaccrual status at the time they become TDR loans, remain in nonaccrual status until the borrower demonstrates a sustained period of performance which the Company generally believes to be six consecutive months of payments, or equivalent. Otherwise, TDR loans are subject to the same nonaccrual and charge-off policies as noted above with respect to their restructured principal balance.

Credit risk is inherent in the business of lending. As a result, the Company maintains an allowance for loan losses to absorb losses inherent in the Company’s originated and PNCI loan portfolios. These are maintained through periodic charges to earnings. These charges are included in the Consolidated Income Statements as provision for loan losses. All specifically identifiable and quantifiable losses are immediately charged off against the allowance. However, for a variety of reasons, not all losses are immediately known to the Company and, of those that are known, the full extent of the loss may not be quantifiable at that point in time. The balance of the Company’s allowances for originated and PNCI loan losses are meant to be an estimate of these unknown but probable losses inherent in these portfolios.

The Company formally assesses the adequacy of the allowance for originated and PNCI loan losses on a quarterly basis. Determination of the adequacy is based on ongoing assessments of the probable risk in the outstanding originated and PNCI loan portfolios, and to a lesser extent the Company’s originated and PNCI loan commitments. These assessments include the periodic re-grading of credits based on changes in their individual credit characteristics including delinquency, seasoning, recent financial performance of the borrower, economic factors, changes in the interest rate environment, growth of the portfolio as a whole or by segment, and other factors as warranted. Loans are initially graded when originated or acquired. They are re-graded as they are renewed, when there is a new loan to the same borrower, when identified facts demonstrate heightened risk of nonpayment, or if they become delinquent. Re-grading of larger problem loans occurs at least quarterly. Confirmation of the quality of the grading process is obtained by independent credit reviews conducted by consultants specifically hired for this purpose and by various bank regulatory agencies.

The Company’s method for assessing the appropriateness of the allowance for originated and PNCI loan losses includes specific allowances for impaired loans and leases, formula allowance factors for pools of credits, and allowances for changing environmental factors (e.g., interest rates, growth, economic conditions, etc.). Allowance factors for loan pools are based on historical loss experience by product type and prior risk rating. Allowances for impaired loans are based on analysis of individual credits. Allowances for changing environmental factors are Management’s best estimate of the probable impact these changes have had on the originated or PNCI loan portfolio as a whole. The allowances for originated and PNCI loans are included in the allowance for loan losses.

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As noted above, the allowances for originated and PNCI loan losses consists of a specific allowance, a formula allowance, and an allowance for environmental factors. The first component, the specific allowance, results from the analysis of identified credits that meet management’s criteria for specific evaluation. These loans are reviewed individually to determine if such loans are considered impaired. Impaired loans are those where management has concluded that it is probable that the borrower will be unable to pay all amounts due under the original contractual terms. Impaired loans are specifically reviewed and evaluated individually by management for loss potential by evaluating sources of repayment, including collateral as applicable, and a specified allowance for loan losses is established where necessary.

The second component of the allowance for originated and PNCI loan losses, the formula allowance, is an estimate of the probable losses that have occurred across the major loan categories in the Company’s originated and PNCI loan portfolios. This analysis is based on loan grades by pool and the loss history of these pools. This analysis covers the Company’s entire originated and PNCI loan portfolios including unused commitments but excludes any loans that were analyzed individually and assigned a specific allowance as discussed above. The total amount allocated for this component is determined by applying loss estimation factors to outstanding loans and loan commitments. The loss factors were previously based primarily on the Company’s historical loss experience tracked over a five-year period and adjusted as appropriate for the input of current trends and events. Because historical loss experience varies for the different categories of originated loans, the loss factors applied to each category also differed. In addition, there is a greater chance that the Company would suffer a loss from a loan that was risk rated less than satisfactory than if the loan was last graded satisfactory. Therefore, for any given category, a larger loss estimation factor was applied to less than satisfactory loans than to those that the Company last graded as satisfactory. The resulting formula allowance was the sum of the allocations determined in this manner.

The third component of the allowances for originated and PNCI loan losses, the environmental factor allowance, is a component that is not allocated to specific loans or groups of loans, but rather is intended to absorb losses that may not be provided for by the other components.

There are several primary reasons that the other components discussed above might not be sufficient to absorb the losses present in the originated and PNCI loan portfolios, and the environmental factor allowance is used to provide for the losses that have occurred because of them.

The first reason is that there are limitations to any credit risk grading process. The volume of originated and PNCI loans makes it impractical to re-grade every loan every quarter. Therefore, it is possible that some currently performing originated or PNCI loans not recently graded will not be as strong as their last grading and an insufficient portion of the allowance will have been allocated to them. Grading and loan review often must be done without knowing whether all relevant facts are at hand. Troubled borrowers may deliberately or inadvertently omit important information from reports or conversations with lending officers regarding their financial condition and the diminished strength of repayment sources.

The second reason is that the loss estimation factors are based primarily on historical loss totals. As such, the factors may not give sufficient weight to such considerations as the current general economic and business conditions that affect the Company’s borrowers and specific industry conditions that affect borrowers in that industry. The factors might also not give sufficient weight to other environmental factors such as changing economic conditions and interest rates, portfolio growth, entrance into new markets or products, and other characteristics as may be determined by Management.

Specifically, in assessing how much environmental factor allowance needed to be provided, management considered the following:

• with respect to the economy, management considered the effects of changes in GDP, unemployment, CPI, debt statistics, housing starts, housing sales, auto sales, agricultural prices, home affordability, and other economic factors which serve as indicators of economic health and trends and which may have an impact on the performance of our borrowers, and

• with respect to changes in the interest rate environment, management considered the recent changes in interest rates and the resultant economic impact it may have had on borrowers with high leverage and/or low profitability; and

• with respect to changes in energy prices, management considered the effect that increases, decreases or volatility may have on the performance of our borrowers, and

• with respect to loans to borrowers in new markets and growth in general, management considered the relatively short seasoning of such loans and the lack of experience with such borrowers, and

• with respect to loans that have not yet been identified as impaired, management considered the volume and severity of past due loans.

Each of these considerations was assigned a factor and applied to a portion or the entire originated and PNCI loan portfolios. Since these factors are not derived from experience and are applied to large non-homogeneous groups of loans, they are available for use across the portfolio as a whole.

Acquired loans are valued as of acquisition date in accordance with FASB ASC Topic 805, Business Combinations. Loans purchased with evidence of credit deterioration since origination for which it is probable that all contractually required payments will not be collected are referred to as purchased credit impaired (PCI) loans. PCI loans are accounted for under FASB ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality. In addition, because of the significant credit discounts associated with the loans acquired in the Granite acquisition, the Company elected to account for all loans acquired in the Granite acquisition under FASB ASC Topic 310-30, and classify them all as PCI loans. Under FASB ASC Topic 805 and FASB ASC Topic 310-30, PCI loans are recorded at fair value at acquisition date, factoring in credit losses expected to be incurred over the life of the loan. Accordingly, an allowance for loan losses is not carried over or recorded as of the acquisition date. Fair value is defined as the present value of the future estimated principal and interest payments of the loan, with the discount rate used in the present value calculation representing the estimated effective yield of the loan. The difference between contractual future payments and estimated future payments is referred to as the nonaccretable difference. The difference between estimated future payments and the present value of the estimated future payments is referred to as the accretable yield. The accretable yield represents the amount that is expected to be recorded as interest income over the remaining life of the loan. If after acquisition, the Company determines that the future cash flows of a PCI loan are expected to be more than the originally estimated, an increase in the discount rate (effective yield) would be made such that the newly increased accretable yield would be recognized, on a level yield basis, over the remaining estimated life of the loan. If after acquisition, the Company determines that the future cash flows of a PCI loan are expected to be less than the previously estimated, the discount rate would first be reduced until the present value of the reduced cash flow estimate equals the previous present value however, the discount rate may not be lowered below its original level. If the discount rate has been lowered to its original level and the present value has not been sufficiently lowered, an allowance for loan loss would be established through a provision for loan losses charged to expense to decrease the present value to the required level. If the estimated cash flows improve after

57

an allowance has been established for a loan, the allowance may be partially or fully reversed depending on the improvement in the estimated cash flows. Only after the allowance has been fully reversed may the discount rate be increased.    PCI loans are put on nonaccrual status when cash flows cannot be reasonably estimated. PCI loans are charged off when evidence suggests cash flows are not recoverable.    Foreclosed assets from PCI loans are recorded in foreclosed assets at fair value with the fair value at time of foreclosure representing cash flow from the loan. ASC 310-30 allows PCI loans with similar risk characteristics and acquisition time frame to be “pooled” and have their cash flows aggregated as if they were one loan.

The Components of the Allowance for Loan Losses

The following table sets forth the allowance for loan losses as of the dates indicated:

(dollars in thousands)	March 31, 2018			December 31, 2017
Allowance for originated and PNCI loan losses:
Specific allowance	$	3,091		$	2,699
Formula allowance		15,630			17,100
Environmental factors allowance		11,084			10,252
Allowance for originated and PNCI loan losses		29,805			30,051
Allowance for PCI loan losses		168			272
Allowance for loan losses	$	29,973		$	30,323
Allowance for loan losses to loans		0.98	%		1.01	%

For additional information regarding the allowance for loan losses, including changes in specific, formula, and environmental factors allowance categories, see “Provision for Loan Losses” at “Results of Operations” and “Allowance for Loan Losses” above. Based on the current conditions of the loan portfolio, management believes that the $29,973,000 allowance for loan losses at March 31, 2018 is adequate to absorb probable losses inherent in the Bank’s loan portfolio. No assurance can be given, however, that adverse economic conditions or other circumstances will not result in increased losses in the portfolio.

The following table summarizes the allocation of the allowance for loan losses between loan types as of the dates indicated:

(in thousands)	March 31, 2018		December 31, 2017
Real estate mortgage	$	13,665	$	13,758
Consumer		7,718		8,227
Commercial		6,392		6,512
Real estate construction		2,198		1,826
Total allowance for loan losses	$	29,973	$	30,323

The following table summarizes the allocation of the allowance for loan losses between loan types as a percentage of the total allowance for loan losses as of the dates indicated:

	March 31, 2018			December 31, 2017
Real estate mortgage		45.6	%		45.4	%
Consumer		25.8	%		27.1	%
Commercial		21.3	%		21.5	%
Real estate construction		7.3	%		6.0	%
Total allowance for loan losses		100.0	%		100.0	%

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The following table summarizes the allocation of the allowance for loan losses as a percentage of the total loans for each loan category as of the dates indicated:

	March 31, 2018			December 31, 2017
Real estate mortgage		0.58	%		0.60	%
Consumer		2.21	%		2.31	%
Commercial		2.96	%		2.95	%
Real estate construction		1.51	%		1.33	%
Total allowance for loan losses		0.98	%		1.01	%

The following tables summarize the activity in the allowance for loan losses, reserve for unfunded commitments, and allowance for losses (which is comprised of the allowance for loan losses and the reserve for unfunded commitments) for the periods indicated (dollars in thousands):

	Three months ended March 31,
	2018			2017
Allowance for loan losses:
Balance at beginning of period	$	30,323		$	32,503
Provision for loan losses		(236	)		(1,557	)
Loans charged off:
Real estate mortgage:
Residential		(1	)		—
Commercial		—			—
Consumer:
Home equity lines		(80	)		(71	)
Home equity loans		—			(31	)
Other consumer		(194	)		(174	)
Commercial		(205	)		(133	)
Construction:
Residential		—			—
Commercial		—			—
Total loans charged off		(480	)		(409	)
Recoveries of previously charged-off loans:
Real estate mortgage:
Residential		—			—
Commercial		15			110
Consumer:
Home equity lines		209			46
Home equity loans		14			12
Other consumer		78			141
Commercial		50			170
Construction:
Residential		—			—
Commercial		—			1
Total recoveries of previously charged off loans		366			480
Net (charge-offs) recoveries		(114	)		71
Balance at end of period	$	29,973		$	31,017

59

	Three months ended March 31,
	2018			2017
Reserve for unfunded commitments:
Balance at beginning of period	$	3,164		$	2,719
Provision for losses – unfunded commitments		700			15
Balance at end of period	$	3,864		$	2,734
Balance at end of period:
Allowance for loan losses	$	29,973		$	31,017
Reserve for unfunded commitments		3,864			2,734
Allowance for loan losses and reserve for unfunded commitments	$	33,837		$	33,751
As a percentage of total loans at end of period:
Allowance for loan losses		0.98	%		1.12	%
Reserve for unfunded commitments		0.13	%		0.09	%
Allowance for loan losses and reserve for unfunded commitments		1.11	%		1.21	%
Average total loans	$	3,028,178		$	2,758,544
Ratios (annualized):
Net charge-offs (recoveries) during period to average loans outstanding during period		0.02	%		(0.01	)%
Provision for (benefit from) loan losses to average loans outstanding during period		(0.03	)%		(0.23	)%

Foreclosed Assets, Net of Allowance for Losses

The following tables detail the components and summarize the activity in foreclosed assets, net of allowances for losses for the period indicated (in thousands):

	Balance at March 31, 2018		New NPA		Advances/ Capitalized Costs/Other		Sales			Valuation Adjustments			Transfers from Loans		Balance at December 31, 2017
Land & Construction	$	635		—		—	$	(1,151	)		—			—	$	1,786
Residential real estate		836		—		—		(277	)	$	(73	)		—		1,186
Commercial real estate		93		—		—		(144	)		(17	)		—		254
Total foreclosed assets	$	1,564		—		—	$	(1,572	)	$	(90	)		—	$	3,226

Premises and Equipment

Premises and equipment were comprised of:

	March 31, 2018			December 31, 2017
	(In thousands)
Land & land improvements	$	9,961		$	9,959
Buildings		50,790			50,340
Furniture and equipment		37,348			35,939
		98,099			96,238
Less: Accumulated depreciation		(41,678	)		(40,644	)
		56,421			55,594
Construction in progress		2,137			2,148
Total premises and equipment	$	58,558		$	57,742

During the three months ended March 31, 2018, premises and equipment increased $816,000 due to purchases of $2,200,000, that were partially offset by depreciation of $1,371,000 and disposals of premises and equipment with net book value of $13,000.

60

Intangible Assets

Intangible assets were comprised of the following as of the dates indicated:

	March 31, 2018		December 31, 2017
	(In thousands)
Core-deposit intangible	$	4,835	$	5,174
Goodwill		64,311		64,311
Total intangible assets	$	69,146	$	69,485

The core-deposit intangible assets resulted from the Bank’s acquisition of three bank branches from Bank of America on March 18, 2016, North Valley Bancorp in 2014, and Citizens in 2011. The goodwill intangible asset includes $849,000 from the acquisition of three bank branches from Bank of America on March 18, 2016, $47,943,000 from the North Valley Bancorp acquisition in 2014, and $15,519,000 from the North State National Bank acquisition in 2003. Amortization of core deposit intangible assets amounting to $339,000 and $359,000 was recorded during the three months ended March 31, 2018 and 2017, respectively.

Investment in Low Income Housing Tax Credit Funds

During the three months ended March 31, 2018, the Company’s investment in low income housing tax credit funds, recorded in other assets, increased $241,000 to $17,095,000 due to capital contributions partially off-set by amortization of such investments. During the three months ended March 31, 2018, the Company made $528,000 of capital contributions to several of its five existing low income housing tax credit fund investments bringing its commitment for future capital contributions to $7,677,000 at March 31, 2018.    This commitment for low income housing tax credit funds is recorded in other liabilities.

Deposits

During the three months ended March 31, 2018, the Company’s deposits increased $75,273,000 (1.9%) to $4,084,404,000.    Included in the March 31, 2018 and December 31, 2017 certificate of deposit balances are $50,000,000 from the State of California. The Bank participates in a deposit program offered by the State of California whereby the State may make deposits at the Bank’s request subject to collateral and creditworthiness constraints. The negotiated rates on these State deposits are generally more favorable than other wholesale funding sources available to the Bank. See Note 13 to the condensed consolidated financial statements at Item 1 of Part I of this report for more information about the Company’s deposits.

Long-Term Debt

See Note 16 to the condensed consolidated financial statements at Item 1 of Part I of this report for information about the Company’s other borrowings, including long-term debt.

Junior Subordinated Debt

See Note 17 to the condensed consolidated financial statements at Item 1 of Part I of this report for information about the Company’s junior subordinated debt.

Off-Balance Sheet Arrangements

See Note 18 to the condensed consolidated financial statements at Item 1 of Part I of this report for information about the Company’s commitments and contingencies including off-balance-sheet arrangements.

Capital Resources

The current and projected capital position of the Company and the impact of capital plans and long-term strategies are reviewed regularly by Management.

The Company adopted and announced a stock repurchase plan on August 21, 2007 for the repurchase of up to 500,000 shares of the Company’s common stock from time to time as market conditions allow. The 500,000 shares authorized for repurchase under this plan represented approximately 3.2% of the Company’s approximately 15,815,000 common shares outstanding as of August 21, 2007. During the three months ended March 31, 2018, the Company did not repurchase any shares under this plan. This plan has no stated expiration date for the repurchases. As of March 31, 2018, the Company had repurchased 166,600 shares under this plan, which left 333,400 shares available for repurchase under the plan. Shares that are repurchased in accordance with the provisions of a Company stock option plan or equity compensation plan are not counted against the number of shares repurchased under the repurchase plan adopted on August 21, 2007.

The Company’s primary capital resource is shareholders’ equity, which was $505,256,000 at March 31, 2018. This amount represents an decrease of $552,000 (0.1%) from December 31, 2017, the net result of comprehensive income for the period of $2,964,000, and the effect of equity compensation vesting of $391,000 that were offset by dividends paid of $3,903,000, and repurchase of common stock of $4,000. The Company’s ratio of equity to total assets was 10.6% and 10.6% as of March 31, 2018 and December 31, 2017, respectively.    We believe that the Company and the Bank were in compliance with applicable minimum capital requirements set forth in the final Basel III Capital rules as of March 31, 2018.

61

The following summarizes the Company’s ratios of capital to risk-adjusted assets as of the dates indicated:

	March 31, 2018						December 31, 2017
	Ratio			Minimum Regulatory Requirement			Ratio			Minimum Regulatory Requirement
Total capital		13.91	%		9.25	%		14.07	%		9.25	%
Tier I capital		13.03	%		7.25	%		13.18	%		7.25	%
Common equity Tier 1 capital		11.61	%		5.75	%		11.72	%		5.75	%
Leverage		10.84	%		4.00	%		10.80	%		4.00	%

See Note 19 and Note 29 to the condensed consolidated financial statements at Item 1 of Part I of this report for additional information about the Company’s capital resources.

Liquidity

The Bank’s principal source of asset liquidity is cash at Federal Reserve and other banks and marketable investment securities available for sale. At March 31, 2018, cash at Federal Reserve and other banks in excess of reserve requirements and investment securities available for sale totaled $827,014,000, or 17.3% of total assets, representing a decrease of $24,291,000 (2.9%) from $851,305,000, or 17.9% of total assets at December 31, 2017. This decrease in cash and securities available for sale is due mainly to loan growth and decreases in other borrowings in excess growth in deposits and cash flows from operations during the three months ended March 31, 2018. The Company’s profitability during the first three months of 2018 generated cash flows from operations of $23,714,000 compared to $19,444,000 during the first three months of 2017. Maturities of investment securities produced cash inflows of $34,178,000 during the three months ended March 31, 2018 compared to $36,143,000 for the three months ended March 31, 2017. During the three months ended March 31, 2018, the Company invested in securities totaling $39,647,000 and net loan principal increases of $54,682,000 compared to $35,241,000 invested in securities and $1,613,000 net loan principal increases, respectively, during the first three months of 2017. Proceeds from the sale of foreclosed assets accounted for $1,943,000 and $726,000 of investing sources of funds during the three months ended March 31, 2018 and 2017, respectively. These changes in investment and loan balances, and proceeds from sale of foreclosed assets contributed to net cash used by investing activities of $60,408,000 during the three months ended March 31, 2018, compared to net cash provided by investing activities of $1,222,000 during the three months ended March 31, 2017. Financing activities provided net cash of $14,245,000 during the three months ended March 31, 2018, compared to net cash used by financing activities of $2,572,000 during the three months ended March 31, 2017. Deposit balance increases provided $75,273,000 and $3,324,000 of financing sources of funds during the three months ended March 31, 2018 and 2017, respectively. Net changes in other borrowings accounted for $57,125,000 and $2,296,000 of financing uses of funds during the three months ended March 31, 2018 and 2017, respectively. Dividends paid used $3,903,000 and $3,431,000 of cash during the three months ended March 31, 2018 and 2017, respectively. The Company’s liquidity is dependent on dividends received from the Bank. Dividends from the Bank are subject to certain regulatory restrictions.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

The Company’s assessment of market risk as of March 31, 2018 indicates there are no material changes in the quantitative and qualitative disclosures from those in our Annual Report on Form 10-K for the year ended December 31, 2017.

Item 4. Controls and Procedures

The Company’s management, including its Chief Executive Officer and Chief Financial Officer, have evaluated the effectiveness of the Company’s disclosure controls and procedures as of March 31, 2018. Disclosure controls and procedures, as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), are controls and procedures designed to reasonably assure that information required to be disclosed in the Company’s reports filed or submitted under the Exchange Act is recorded, processed, summarized and reported on a timely basis. Disclosure controls are also designed to reasonably assure that such information is accumulated and communicated to the Company’s management, including the Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure. Based upon their evaluation, our Chief Executive Officer and Chief Financial Officer concluded that the Company’s disclosure controls and procedures were effective as of March 31, 2018.

During the three months ended March 31, 2018, there were no changes in our internal controls or in other factors that have materially affected or are reasonably likely to materially affect our internal controls over financial reporting.

62

PART II – OTHER INFORMATION

Item 1 – Legal Proceedings

Due to the nature of our business, we are involved in legal proceedings that arise in the ordinary course of our business. While the outcome of these matters is currently not determinable, we do not expect that the ultimate costs to resolve these matters will have a material adverse effect on our consolidated financial position, results of operations, or cash flows.

See Note 18 to the condensed consolidated financial statements at Item 1 of Part I of this report, for a discussion of the Company’s involvement in litigation.

Item 1A – Risk Factors

In addition to the other information set forth in this report, you should carefully consider the factors discussed under “Part I—Item 1A—Risk Factors” in our Form 10-K for the year ended December 31, 2017 which are incorporated by reference herein. These factors could materially adversely affect our business, financial condition, liquidity, results of operations and capital position, and could cause our actual results to differ materially from our historical results or the results contemplated by the forward-looking statements contained in this report.

Information concerning additional risk factors related to the proposed merger of the Company and FNBB is available in the Company’s registration statement on Form S-4 SEC (filed on March 21, 2018 and amended on April  18, 2018).

Item 2 – Unregistered Sales of Equity Securities and Use of Proceeds

The following table shows the repurchases made by the Company or any affiliated purchaser (as defined in Rule 10b-18(a)(3) under the Exchange Act) during the three months ended March 31, 2018:

Period	(a) Total number of shares purchased(1)		(b) Average price paid per share		(c) Total number of shares purchased as of part of publicly announced plans or programs		(d) Maximum number shares that may yet be purchased under the plans or programs(2)
Jan. 1-31, 2018		52	$	38.51		—		333,400
Feb. 1-28, 2018		82	$	37.26		—		333,400
Mar. 1-31, 2018		—		—		—		333,400
Total		134	$	37.75		—		333,400

(1) Includes shares purchased by the Company’s Employee Stock Ownership Plan and pursuant to various other equity incentive plans. See Note 19 to the condensed consolidated financial statements at Item 1 of Part I of this report, for a discussion of the Company’s stock repurchased under equity compensation plans.

(2) Does not include shares that may be purchased by the Company’s Employee Stock Ownership Plan and pursuant to various other equity incentive plans.

63

Item 6 – Exhibits

EXHIBIT INDEX

Exhibit No.	Exhibit
3.1	Restated Articles of Incorporation (incorporated by reference to Exhibit 3.1 to TriCo’s Current Report on Form 8-K filed on March 17, 2009).
3.2	Bylaws of TriCo, as amended (incorporated by reference to Exhibit 3.1 to TriCo’s Current Report on Form 8-K filed February 17, 2011).
4.1	Instruments defining the rights of holders of the long-term debt securities of the TriCo and its subsidiaries are omitted pursuant to section (b)(4)(iii)(A) of Item 601 of Regulation S-K. TriCo hereby agrees to furnish copies of these instruments to the Securities and Exchange Commission upon request.
10.1*	Form of Change of Control Agreement among TriCo, Tri Counties Bank and each of Dan Bailey, Craig Carney, John Fleshood, Richard O’Sullivan, and Thomas Reddish (incorporated by reference to Exhibit 10.2 to TriCo’s Current Report on Form 8-K filed on July 23, 2013).
10.2*	TriCo’s 2001 Stock Option Plan, as amended (incorporated by reference to Exhibit 10.7 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2005).
10.3*	TriCo’s 2009 Equity Incentive Plan, as amended (incorporated by reference to Exhibit 10.2 to TriCo’s Current Report on Form 8-K filed April 3, 2013).
10.4*	Amended Employment Agreement between TriCo and Richard Smith dated as of March  28, 2013 (incorporated by reference to Exhibit 10.1 to TriCo’s Current Report on Form 8-K filed April 3, 2013).
10.5*	Transaction Bonus Agreement between TriCo Bancshares and Richard P. Smith dated as of August  7, 2014 (incorporated by reference to Exhibit 10.4 to TriCo’s Form 8-K filed on August 13, 2014).
10.6*	Tri Counties Bank Executive Deferred Compensation Plan restated April 1, 1992, and January  1, 2005 (incorporated by reference to Exhibit 10.9 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2005).
10.7*	Tri Counties Bank Deferred Compensation Plan for Directors effective January  1, 2005 (incorporated by reference to Exhibit 10.10 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2005).
10.8*	2005 Tri Counties Bank Deferred Compensation Plan for Executives and Directors effective January  1, 2005 (incorporated by reference to Exhibit 10.11 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2005).
10.9*	Tri Counties Bank Supplemental Retirement Plan for Directors dated September 1, 1987, as restated January  1, 2001, and amended and restated January 1, 2004 (incorporated by reference to Exhibit 10.12 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2004).
10.10*	2004 TriCo Bancshares Supplemental Retirement Plan for Directors effective January  1, 2004 (incorporated by reference to Exhibit 10.13 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2004).
10.11*	Tri Counties Bank Supplemental Executive Retirement Plan effective September 1, 1987, as amended and restated January  1, 2004 (incorporated by reference to Exhibit 10.14 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2004).
10.12*	2004 TriCo Bancshares Supplemental Executive Retirement Plan effective January  1, 2004 (incorporated by reference to Exhibit 10.15 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2004).
10.13*	Form of Joint Beneficiary Agreement effective March  31, 2003 between Tri Counties Bank and each of George Barstow, Dan Bay, Ron Bee, Craig Carney, Robert Elmore, Greg Gill, Richard Miller, Richard O’Sullivan, Thomas Reddish, Jerald Sax, and Richard Smith (incorporated by reference to Exhibit 10.14 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2003).
10.14*	Form of Joint Beneficiary Agreement effective March  31, 2003 between Tri Counties Bank and each of Don Amaral, William Casey, Craig Compton, John Hasbrook, Michael Koehnen, Donald Murphy, Carroll Taresh, and Alex Vereschagin (incorporated by reference to Exhibit 10.15 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2003).
10.15*	Form of Tri Counties Bank Executive Long Term Care Agreement effective June  10, 2003 between Tri Counties Bank and each of Craig Carney, Richard Miller, Richard O’Sullivan, and Thomas Reddish (incorporated by reference to Exhibit 10.16 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2003).
10.16*	Form of Tri Counties Bank Director Long Term Care Agreement effective June  10, 2003 between Tri Counties Bank and each of Don Amaral, William Casey, Craig Compton, John Hasbrook, Michael Koehnen, Carroll Taresh, and Alex Vereschagin (incorporated by reference to Exhibit 10.17 to TriCo’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2003).
10.17*	Form of Indemnification Agreement between TriCo and its directors and executive officers (incorporated by reference to Exhibit 10.1 to TriCo’s Current Report on Form 8-K filed September 10, 2013).
10.18*	Form of Indemnification Agreement between Tri Counties Bank its directors and executive officers (incorporated by reference to Exhibit 10.2 to TriCo’s Current Report on Form 8-K filed September 10, 2013).
10.19*	Form of Stock Option Agreement and Grant Notice pursuant to TriCo’s 2009 Equity Incentive Plan (incorporated by reference to Exhibit 10.19 to TriCo’s Annual Report on Form 10-K filed March 1, 2018).
10.20*	Form of Restricted Stock Unit Agreement and Grant Notice for Non-Employee Executives pursuant to TriCo’s 2009 Equity Incentive Plan (incorporated by reference to Exhibit 10.1 to TriCo’s Current Report on Form 8-K filed November 14, 2014).

64

Item 6 – Exhibits (continued)

10.21*	Form of Restricted Stock Unit Agreement and Grant Notice for Directors pursuant to TriCo’s 2009 Equity Incentive Plan (incorporated by reference to Exhibit 10.1 to TriCo’s Current Report on Form 8-K filed November 14, 2014).
10.22*	Form of Performance Award Agreement and Grant Notice pursuant to TriCo’s 2009 Equity Incentive Plan (incorporated by reference to Exhibit 10.3 to TriCo’s Current Report on Form 8-K filed August 13, 2014).
10.23*	John Fleshood Offer Letter dated November 3, 2016 (incorporated by reference to Exhibit 10.1 to TriCo’s Current Report on Form 8-K filed on November 30, 2016).
10.24*	Amendment to John Fleshood Offer Letter dated December  19, 2016 (incorporated by reference to Exhibit 10.1 to TriCo’s Current Report on Form 8-K filed on November 30, 2016).
31.1	Rule 13a-14(a)/15d-14(a) Certification of CEO
31.2	Rule 13a-14(a)/15d-14(a) Certification of CFO
32.1	Section 1350 Certification of CEO
32.2	Section 1350 Certification of CFO
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document

* Management contract or compensatory plan or arrangement

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	TRICO BANCSHARES
	(Registrant)
Date: May 9, 2018	/s/ Thomas J. Reddish
	Thomas J. Reddish
	Executive Vice President and Chief Financial Officer
	(Duly authorized officer and principal accounting and financial officer)

65

EX-31.1

Exhibit 31.1

Rule 13a-14(a)/15d-14(a) Certification of CEO

I, Richard P. Smith, certify that;

1. I have reviewed this report on Form 10-Q of TriCo Bancshares;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and we have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiary, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial data; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 9, 2018	/s/ Richard P. Smith
	Richard P. Smith
	President and Chief Executive Officer

EX-31.2

Exhibit 31.2

Rule 13a-14(a)/15d-14(a) Certification of CFO

I, Thomas J. Reddish, certify that;

1. I have reviewed this report on Form 10-Q of TriCo Bancshares;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and we have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiary, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial data; and

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 9, 2018	/s/ Thomas J. Reddish
	Thomas J. Reddish
	Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

Section 1350 Certification of CEO

In connection with the Quarterly Report of TriCo Bancshares (the “Company”) on Form 10-Q for the period ended March 31, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Richard P. Smith, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Richard P. Smith

Richard P. Smith

President and Chief Executive Officer

A signed original of this written statement required by Section 906 has been provided to TriCo Bancshares and will be retained by TriCo Bancshares and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

Section 1350 Certification of CFO

In connection with the Quarterly Report of TriCo Bancshares (the “Company”) on Form 10-Q for the period ended March 31, 2018 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Thomas J. Reddish, Executive Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Thomas J. Reddish

Thomas J. Reddish

Executive Vice President and Chief Financial Officer

A signed original of this written statement required by Section 906 has been provided to TriCo Bancshares and will be retained by TriCo Bancshares and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 04, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Trading Symbol	TCBK
Entity Registrant Name	TRICO BANCSHARES /
Entity Central Index Key	0000356171
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		22,969,792

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Assets:
Cash and due from banks	$ 87,138	$ 105,968
Cash at Federal Reserve and other banks	95,841	99,460
Cash and cash equivalents	182,979	205,428
Investment securities:
Marketable equity securities	2,890	2,938
Available for sale debt securities	735,895	727,945
Held to maturity debt securities	496,035	514,844
Restricted equity securities	16,956	16,956
Loans held for sale	2,149	4,616
Loans	3,069,733	3,015,165
Allowance for loan losses	(29,973)	(30,323)
Total loans, net	3,039,760	2,984,842
Foreclosed assets, net	1,564	3,226
Premises and equipment, net	58,558	57,742
Cash value of life insurance	98,391	97,783
Accrued interest receivable	12,407	13,772
Goodwill	64,311	64,311
Other intangible assets, net	4,835	5,174
Mortgage servicing rights	6,953	6,687
Other assets	56,274	55,051
Total assets	4,779,957	4,761,315
Deposits:
Noninterest-bearing demand	1,359,996	1,368,218
Interest-bearing	2,724,408	2,640,913
Total deposits	4,084,404	4,009,131
Accrued interest payable	958	930
Reserve for unfunded commitments	3,864	3,164
Other liabilities	63,529	63,258
Other borrowings	65,041	122,166
Junior subordinated debt	56,905	56,858
Total liabilities	4,274,701	4,255,507
Commitments and contingencies (Note 18)
Shareholders' equity:
Preferred stock, no par value: 1,000,000 shares authorized, zero issued and outstanding at March 31, 2018 and December 31, 2017
Common stock, no par value: 50,000,000 shares authorized; issued and outstanding: 22,956,323 at March 31, 2018 22,955,963 at December 31, 2017	256,226	255,836
Retained earnings	266,235	255,200
Accumulated other comprehensive loss, net of tax	(17,205)	(5,228)
Total shareholders' equity	505,256	505,808
Total liabilities and shareholders' equity	$ 4,779,957	$ 4,761,315

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Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2018	Dec. 31, 2017	Aug. 21, 2007
Statement of Financial Position [Abstract]
Preferred stock, no par value	$ 0	$ 0
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, no par value	$ 0	$ 0
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	22,956,323	22,955,963
Common stock, shares outstanding	22,956,323	22,955,963	15,814,662

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Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest and dividend income:
Loans, including fees	$ 38,049	$ 34,914
Investments:
Taxable securities	7,322	6,703
Tax exempt securities	1,041	1,041
Dividends	336	391
Interest bearing cash at Federal Reserve and other banks	373	435
Total interest and dividend income	47,121	43,484
Interest expense:
Deposits	1,096	894
Other borrowings	342	2
Junior subordinated debt	697	595
Total interest expense	2,135	1,491
Net interest income	44,986	41,993
Benefit from reversal of provision for loan losses	(236)	(1,557)
Net interest income after benefit from reversal of provision for loan losses	45,222	43,550
Noninterest income:
Service charges and fees	9,356	8,907
Gain on sale of loans	626	910
Commissions on sale of non-deposit investment products	876	607
Increase in cash value of life insurance	608	685
Other	824	594
Total noninterest income	12,290	11,703
Noninterest expense:
Salaries and related benefits	21,652	20,893
Other	16,510	14,929
Total noninterest expense	38,162	35,822
Income before income taxes	19,350	19,431
Provision for income taxes	5,440	7,352
Net income	$ 13,910	$ 12,079
Earnings per share:
Basic	$ 0.61	$ 0.53
Diluted	$ 0.60	$ 0.52

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Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 13,910	$ 2,989	$ 11,897	$ 13,589	$ 12,079
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on available for sale securities arising during the period	(11,026)				457
Change in minimum pension liability	80				54
Other comprehensive income (loss)	(10,946)				511
Comprehensive income	$ 2,964				$ 12,590

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Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance at Dec. 31, 2016	$ 477,347	$ 252,820	$ 232,440	$ (7,913)
Beginning balance, shares at Dec. 31, 2016		22,867,802
Net income	12,079		12,079
Other comprehensive income (loss)	511			511
Stock option vesting	88	$ 88
RSU vesting	204	204
PSU vesting	89	89
Stock options exercised	435	$ 435
Stock options exercised, shares		21,450
RSUs released	0	$ 0	0	0
RSUs released, shares		304
Repurchase of common stock, value	(604)	$ (180)	(424)
Repurchase of common stock, shares		(16,251)
Dividends paid	(3,431)		(3,431)
Ending balance at Mar. 31, 2017	486,718	$ 253,456	240,664	(7,402)
Ending balance, shares at Mar. 31, 2017		22,873,305
Beginning balance at Dec. 31, 2017	$ 505,808	$ 255,836	255,200	(5,228)
Beginning balance, shares at Dec. 31, 2017	22,955,963	22,955,963
Net income	$ 13,910		13,910
Adoption ASU | ASU 2016-01 [Member]			(62)	62
Adoption ASU | ASU 2018-02 [Member]			1,093	(1,093)
Other comprehensive income (loss)	(10,946)			(10,946)
Stock option vesting	37	$ 37
RSU vesting	238	238
PSU vesting	$ 116	116
Stock options exercised, shares	0
RSUs released	$ 0	$ 0	0	0
RSUs released, shares		494
Repurchase of common stock, value	(4)	$ (1)	(3)
Repurchase of common stock, shares		(134)
Dividends paid	(3,903)		(3,903)
Ending balance at Mar. 31, 2018	$ 505,256	$ 256,226	$ 266,235	$ (17,205)
Ending balance, shares at Mar. 31, 2018	22,956,323	22,956,323

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Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Dividends paid, per share	$ 0.17	$ 0.15
Retained Earnings [Member]
Dividends paid, per share	$ 0.17	$ 0.15

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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating activities:
Net income	$ 13,910	$ 12,079
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of premises and equipment, and amortization	1,613	1,604
Amortization of intangible assets	339	359
Reversal of provision for loan losses	(236)	(1,557)
Amortization of investment securities premium, net	700	798
Originations of loans for resale	(20,332)	(34,317)
Proceeds from sale of loans originated for resale	23,270	36,771
Gain on sale of loans	(626)	(910)
Change in market value of mortgage servicing rights	(111)	13
Provision for (reversal of) losses on foreclosed assets	90	(66)
Gain on sale of foreclosed assets	(371)	(118)
Loss on disposal of fixed assets	13
Gain on sale of premises held for sale		(3)
Increase in cash value of life insurance	(608)	(685)
Gain on life insurance death benefit		(107)
Equity compensation vesting expense	391	381
Loss on marketable equity securities	48
Change in:
Reserve for unfunded commitments	700	15
Interest receivable	1,365	791
Interest payable	28	(48)
Other assets and liabilities, net	3,531	4,444
Net cash from operating activities	23,714	19,444
Investing activities:
Proceeds from maturities of securities available for sale	15,643	14,069
Proceeds from maturities of securities held to maturity	18,535	22,074
Purchases of securities available for sale	(39,647)	(35,241)
Loan origination and principal collections, net	(54,682)	(1,613)
Proceeds from sale of other real estate owned	1,943	726
Proceeds from sale of premises held for sale		3,338
Purchases of premises and equipment	(2,200)	(2,413)
Life insurance proceeds		282
Net cash provided by investing activities	(60,408)	1,222
Financing activities:
Net increase in deposits	75,273	3,324
Net change in other borrowings	(57,125)	(2,296)
Repurchase of common stock		(169)
Dividends paid	(3,903)	(3,431)
Net cash used by financing activities	14,245	(2,572)
Net change in cash and cash equivalents	(22,449)	18,094
Cash and cash equivalents and beginning of year	205,428	305,612
Cash and cash equivalents at end of year	182,979	323,706
Supplemental disclosure of noncash activities:
Unrealized (loss) gain on securities available for sale	(15,628)	787
Loans transferred to foreclosed assets		85
Deferred gain on sale of premises held for sale		438
Market value of shares tendered in-lieu of cash to pay for exercise of options and/or related taxes	4	604
Supplemental disclosure of cash flow activity:
Cash paid for interest expense	2,107	1,539
Cash paid for income taxes	$ 0	$ 0

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Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Note 1 – Summary of Significant Accounting Policies

Description of Business and Basis of Presentation

TriCo Bancshares (the “Company” or “we”) is a California corporation organized to act as a bank holding company for Tri Counties Bank (the “Bank”). The Company and the Bank are headquartered in Chico, California. The Bank is a California-chartered bank that is engaged in the general commercial banking business in 26 California counties. The Bank operates from 57 traditional branches and 9 in-store branches. The Company has five capital subsidiary business trusts (collectively, the “Capital Trusts”) that issued trust preferred securities, including two organized by TriCo and three acquired with the acquisition of North Valley Bancorp. See Note 17 – Junior Subordinated Debt.

The consolidated financial statements are prepared in accordance with accounting policies generally accepted in the United States of America and general practices in the banking industry. The consolidated financial statements include the accounts of the Company. All inter-company accounts and transactions have been eliminated in consolidation. For financial reporting purposes, the Company’s investments in the Capital Trusts of $1,703,000 are accounted for under the equity method and, accordingly, are not consolidated and are included in other assets on the consolidated balance sheet. The subordinated debentures issued and guaranteed by the Company and held by the Capital Trusts are reflected as debt on the Company’s consolidated balance sheet.

Use of Estimates in the Preparation of Financial Statements

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires Management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

Significant Group Concentration of Credit Risk

The Company grants agribusiness, commercial, consumer, and residential loans to customers located throughout the northern San Joaquin Valley, the Sacramento Valley and northern mountain regions of California. The Company has a diversified loan portfolio within the business segments located in this geographical area. The Company currently classifies all its operation into one business segment that it denotes as community banking.

Cash and Cash Equivalents

For purposes of the consolidated statements of cash flows, cash and cash equivalents include cash on hand, amounts due from banks, and federal funds sold. Net cash flows are reported for loan and deposit transactions and other borrowings.

Marketable Equity Securities

As of December 31, 2017, marketable equity securities with a fair value of $2,938,000 were recorded within investment securities available for sale on the consolidated balance sheets with changes in the fair value recorded through other comprehensive income and accumulated other comprehensive income (loss). As of January 1, 2018, the Company adopted Accounting Standard Update (“ASU”) 2016-01 using a prospective transition approach and reclassified its marketable equity securities from investments available for sale into a separate component of investment securities. The ASU requires marketable equity securities to be reported at fair value with changes in the fair value recorded through earnings. As of January 1, 2018, unrealized losses of $62,000 were reclassified from accumulated other comprehensive loss to retained earnings and the deferred tax asset was reduced by $18,000. During the three months ended March 31, 2018, the Company recognized $48,000 of unrealized losses in the condensed consolidated statements of income.

Debt Securities

The Company classifies its debt securities into one of three categories: trading, available for sale or held to maturity. Trading securities are bought and held principally for the purpose of selling in the near term. Held to maturity securities are those securities which the Company has the ability and intent to hold until maturity. These securities are carried at cost adjusted for amortization of premium and accretion of discount, computed by the effective interest method over their contractual lives. All other securities not included in trading or held to maturity are classified as available for sale. Available for sale securities are recorded at fair value. Unrealized gains and losses, net of the related tax effect, on available for sale securities are reported as a separate component of other accumulated comprehensive income in shareholders’ equity until realized. Premiums and discounts are amortized or accreted over the life of the related investment security as an adjustment to yield using the effective interest method. Dividend and interest income are recognized when earned. Realized gains and losses are derived from the amortized cost of the security sold. During the three months ended March 31, 2018 and throughout 2017, the Company did not have any debt securities classified as trading.

The Company assesses other-than-temporary impairment (“OTTI”) based on whether it intends to sell a security or if it is likely that the Company would be required to sell the security before recovery of the amortized cost basis of the investment, which may be maturity. For debt securities, if we intend to sell the security or it is more likely than not that we will be required to sell the security before recovering its cost basis, the entire impairment loss would be recognized in earnings as an OTTI. If we do not intend to sell the security and it is not likely that we will be required to sell the security but we do not expect to recover the entire amortized cost basis of the security, only the portion of the impairment loss representing credit losses would be recognized in earnings. The credit loss on a security is measured as the difference between the amortized cost basis and the present value of the cash flows expected to be collected. Projected cash flows are discounted by the original or current effective interest rate depending on the nature of the security being measured for potential OTTI. The remaining impairment related to all other factors, the difference between the present value of the cash flows expected to be collected and fair value, is recognized as a charge to other comprehensive income (“OCI”). Impairment losses related to all other factors are presented as separate categories within OCI. The accretion of the amount recorded in OCI increases the carrying value of the investment and does not affect earnings. If there is an indication of additional credit losses the security is re-evaluated according to the procedures described above. No OTTI losses were recognized during the three months ended March 31, 2018 or the year ended December 31, 2017.

Restricted Equity Securities

Restricted equity securities represent the Company’s investment in the stock of the Federal Home Loan Bank of San Francisco (“FHLB”) and are carried at par value, which reasonably approximates its fair value. While technically these are considered equity securities, there is no market for the FHLB stock. Therefore, the shares are considered as restricted investment securities. Management periodically evaluates FHLB stock for other-than-temporary impairment. Management’s determination of whether these investments are impaired is based on its assessment of the ultimate recoverability of cost rather than by recognizing temporary declines in value. The determination of whether a decline affects the ultimate recoverability of cost is influenced by criteria such as (1) the significance of any decline in net assets of the FHLB as compared to the capital stock amount for the FHLB and the length of time this situation has persisted, (2) commitments by the FHLB to make payments required by law or regulation and the level of such payments in relation to the operating performance of the FHLB, (3) the impact of legislative and regulatory changes on institutions and, accordingly, the customer base of the FHLB, and (4) the liquidity position of the FHLB.

As a member of the FHLB system, the Bank is required to maintain a minimum level of investment in FHLB stock based on specific percentages of its outstanding mortgages, total assets, or FHLB advances. The Bank may request redemption at par value of any stock in excess of the minimum required investment. Stock redemptions are at the discretion of the FHLB.

Loans Held for Sale

Loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or fair value, as determined by aggregate outstanding commitments from investors of current investor yield requirements. Net unrealized losses are recognized through a valuation allowance by charges to noninterest income.

Mortgage loans held for sale are generally sold with the mortgage servicing rights retained by the Company. Gains or losses on the sale of loans that are held for sale are recognized at the time of the sale and determined by the difference between net sale proceeds and the net book value of the loans less the estimated fair value of any retained mortgage servicing rights.

Loans and Allowance for Loan Losses

Loans originated by the Company, i.e., not purchased or acquired in a business combination, are referred to as originated loans. Originated loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal amount outstanding, net of deferred loan fees and costs. Loan origination and commitment fees and certain direct loan origination costs are deferred, and the net amount is amortized as an adjustment of the related loan’s yield over the actual life of the loan. Originated loans on which the accrual of interest has been discontinued are designated as nonaccrual loans.

Originated loans are placed in nonaccrual status when reasonable doubt exists as to the full, timely collection of interest or principal, or a loan becomes contractually past due by 90 days or more with respect to interest or principal and is not well secured and in the process of collection. When an originated loan is placed on nonaccrual status, all interest previously accrued but not collected is reversed. Income on such loans is then recognized only to the extent that cash is received and where the future collection of principal is probable. Interest accruals are resumed on such loans only when they are brought fully current with respect to interest and principal and when, in the judgment of Management, the loan is estimated to be fully collectible as to both principal and interest.

An allowance for loan losses for originated loans is established through a provision for loan losses charged to expense. The allowance is maintained at a level which, in Management’s judgment, is adequate to absorb probable incurred credit losses inherent in the loan portfolio as of the balance sheet date. Originated loans and deposit related overdrafts are charged against the allowance for loan losses when Management believes that the collectability of the principal is unlikely or, with respect to consumer installment loans, according to an established delinquency schedule. The allowance is an amount that Management believes will be adequate to absorb probable incurred losses inherent in existing loans, based on evaluations of the collectability, impairment and prior loss experience of loans. The evaluations take into consideration such factors as changes in the nature and size of the portfolio, overall portfolio quality, loan concentrations, specific problem loans, and current economic conditions that may affect the borrower’s ability to pay. The Company defines an originated loan as impaired when it is probable the Company will be unable to collect all amounts due according to the original contractual terms of the loan agreement. Impaired originated loans are measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate. As a practical expedient, impairment may be measured based on the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. When the measure of the impaired loan is less than the recorded investment in the loan, the impairment is recorded through a specific reserve allocation within the allowance for loan losses.    

In situations related to originated loans where, for economic or legal reasons related to a borrower’s financial difficulties, the Company grants a concession for other than an insignificant period of time to the borrower that the Company would not otherwise consider, the related loan is classified as a troubled debt restructuring (TDR). The Company strives to identify borrowers in financial difficulty early and work with them to modify to more affordable terms before their loan reaches nonaccrual status. These modified terms may include rate reductions, principal forgiveness, payment forbearance and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of the collateral. In cases where the Company grants the borrower new terms that result in the loan being classified as a TDR, the Company measures any impairment on the restructuring as noted above for impaired loans. TDR loans are classified as impaired until they are fully paid off or charged off. Loans that are in nonaccrual status at the time they become TDR loans, remain in nonaccrual status until the borrower demonstrates a sustained period of performance which the Company generally believes to be six consecutive months of payments, or equivalent. Otherwise, TDR loans are subject to the same nonaccrual and charge-off policies as noted above with respect to their restructured principal balance.

Credit risk is inherent in the business of lending. As a result, the Company maintains an allowance for loan losses to absorb probable incurred losses inherent in the Company’s originated loan portfolio. This is maintained through periodic charges to earnings. These charges are included in the Consolidated Statements of Income as provision for loan losses. All specifically identifiable and quantifiable losses are immediately charged off against the allowance. However, for a variety of reasons, not all losses are immediately known to the Company and, of those that are known, the full extent of the loss may not be quantifiable at that point in time. The balance of the Company’s allowance for originated loan losses is meant to be an estimate of these probable incurred losses inherent in the portfolio.

The Company formally assesses the adequacy of the allowance for originated loan losses on a quarterly basis. Determination of the adequacy is based on ongoing assessments of the probable risk in the outstanding originated loan portfolio, and to a lesser extent the Company’s originated loan commitments. These assessments include the periodic re-grading of credits based on changes in their individual credit characteristics including delinquency, seasoning, recent financial performance of the borrower, economic factors, changes in the interest rate environment, growth of the portfolio as a whole or by segment, and other factors as warranted. Loans are initially graded when originated. They are re-graded as they are renewed, when there is a new loan to the same borrower, when identified facts demonstrate heightened risk of nonpayment, or if they become delinquent. Re-grading of larger problem loans occurs at least quarterly. Confirmation of the quality of the grading process is obtained by independent credit reviews conducted by consultants specifically hired for this purpose and by various bank regulatory agencies.

The Company’s method for assessing the appropriateness of the allowance for originated loan losses includes specific allowances for impaired originated loans, formula allowance factors for pools of credits, and allowances for changing environmental factors (e.g., interest rates, growth, economic conditions, etc.). Allowance factors for loan pools were based on historical loss experience by product type and prior risk rating.

Loans purchased or acquired in a business combination are referred to as acquired loans. Acquired loans are valued as of the acquisition date in accordance with Financial Accounting Standards Board Accounting Standards Codification (“FASB ASC”) Topic 805, Business Combinations. Loans acquired with evidence of credit deterioration since origination for which it is probable that all contractually required payments will not be collected are referred to as purchased credit impaired (PCI) loans. PCI loans are accounted for under FASB ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality. Under FASB ASC Topic 805 and FASB ASC Topic 310-30, PCI loans are recorded at fair value at acquisition date, factoring in credit losses expected to be incurred over the life of the loan. Accordingly, an allowance for loan losses is not carried over or recorded as of the acquisition date. Fair value is defined as the present value of the future estimated principal and interest payments of the loan, with the discount rate used in the present value calculation representing the estimated effective yield of the loan. Default rates, loss severity, and prepayment speed assumptions are periodically reassessed and our estimate of future payments is adjusted accordingly. The difference between contractual future payments and estimated future payments is referred to as the nonaccretable difference. The difference between estimated future payments and the present value of the estimated future payments is referred to as the accretable yield. The accretable yield represents the amount that is expected to be recorded as interest income over the remaining life of the loan. If after acquisition, the Company determines that the estimated future cash flows of a PCI loan are expected to be more than originally estimated, an increase in the discount rate (effective yield) would be made such that the newly increased accretable yield would be recognized, on a level yield basis, over the remaining estimated life of the loan. If, thereafter, the Company determines that the estimated future cash flows of a PCI loan are expected to be less than previously estimated, an allowance for loan loss would be established through a provision for loan losses charged to expense to decrease the present value to the required level. If the estimated cash flows improve after an allowance has been established for a loan, the allowance may be partially or fully reversed depending on the improvement in the estimated cash flows. Only after the allowance has been fully reversed may the discount rate be increased. PCI loans are put on nonaccrual status when cash flows cannot be reasonably estimated. PCI loans on nonaccrual status are accounted for using the cost recovery method or cash basis method of income recognition. The Company refers to PCI loans on nonaccrual status that are accounted for using the cash basis method of income recognition as “PCI – cash basis” loans; and the Company refers to all other PCI loans as “PCI – other” loans PCI loans are charged off when evidence suggests cash flows are not recoverable. Foreclosed assets from PCI loans are recorded in foreclosed assets at fair value with the fair value at time of foreclosure representing cash flow from the loan. ASC 310-30 allows PCI loans with similar risk characteristics and acquisition time frame to be “pooled” and have their cash flows aggregated as if they were one loan. The Company elected to use the “pooled” method of ASC 310-30 for PCI – other loans in the acquisition of certain assets and liabilities of Granite Community Bank, N.A. (“Granite”) during 2010 and Citizens Bank of Northern California (“Citizens”) during 2011.

Acquired loans that are not PCI loans are referred to as purchased not credit impaired (PNCI) loans. PNCI loans are accounted for under FASB ASC Topic 310-20, Receivables – Nonrefundable Fees and Other Costs, in which interest income is accrued on a level-yield basis for performing loans. For income recognition purposes, this method assumes that all contractual cash flows will be collected, and no allowance for loan losses is established at the time of acquisition. Post-acquisition date, an allowance for loan losses may need to be established for acquired loans through a provision charged to earnings for credit losses incurred subsequent to acquisition. Under ASC 310-20, the loss would be measured based on the probable shortfall in relation to the contractual note requirements, consistent with our allowance for loan loss policy for similar loans.

Throughout these financial statements, and in particular in Note 4 and Note 5, when we refer to “Loans” or “Allowance for loan losses” we mean all categories of loans, including Originated, PNCI, PCI – cash basis, and PCI—other. When we are not referring to all categories of loans, we will indicate which we are referring to – Originated, PNCI, PCI – cash basis, or PCI—other.

When referring to PNCI and PCI loans we use the terms “nonaccretable difference”, “accretable yield”, or “purchase discount”. Nonaccretable difference is the difference between undiscounted contractual cash flows due and undiscounted cash flows we expect to collect, or put another way, it is the undiscounted contractual cash flows we do not expect to collect. Accretable yield is the difference between undiscounted cash flows we expect to collect and the value at which we have recorded the loan on our financial statements. On the date of acquisition, all purchased loans are recorded on our consolidated financial statements at estimated fair value. Purchase discount is the difference between the estimated fair value of loans on the date of acquisition and the principal amount owed by the borrower, net of charge offs, on the date of acquisition. We may also refer to “discounts to principal balance of loans owed, net of charge-offs”. Discounts to principal balance of loans owed, net of charge-offs is the difference between principal balance of loans owed, net of charge-offs, and loans as recorded on our financial statements. Discounts to principal balance of loans owed, net of charge-offs arise from purchase discounts, and equal the purchase discount on the acquisition date.

Loans are also categorized as “covered” or “noncovered”. Covered loans refer to loans covered by a Federal Deposit Insurance Corporation (“FDIC”) loss sharing agreement. Noncovered loans refer to loans not covered by a FDIC loss sharing agreement. On May 9, 2017, the Company and the FDIC terminated their loss sharing agreements.

Foreclosed Assets

Foreclosed assets include assets acquired through, or in lieu of, loan foreclosure. Foreclosed assets are held for sale and are initially recorded at fair value less estimated costs to sell at the date of foreclosure, establishing a new cost basis. Physical possession of residential real estate property collateralizing a consumer mortgage loan occurs when legal title is obtained upon completion of foreclosure or when the borrower conveys all interest in the property to satisfy the loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Any write-downs based on the asset’s fair value less costs to sell at the date of acquisition are charged to the allowance for loan and lease losses. Any recoveries based on the asset’s fair value less estimated costs to sell in excess of the recorded value of the loan at the date of acquisition are recorded to the allowance for loan and lease losses. These assets are subsequently accounted for at lower of cost or fair value less estimated costs to sell. If fair value declines subsequent to foreclosure, a valuation allowance is recorded through expense. Operating costs after acquisition are expensed. Revenue and expenses from operations and changes in the valuation allowance are included in other noninterest expense. Gain or loss on sale of foreclosed assets is included in noninterest income. Foreclosed assets that are not subject to a FDIC loss-share agreement are referred to as noncovered foreclosed assets.

Foreclosed assets acquired through FDIC-assisted acquisitions that are subject to a FDIC loss-share agreement, and all assets acquired via foreclosure of covered loans are referred to as covered foreclosed assets. Covered foreclosed assets are reported exclusive of expected reimbursement cash flows from the FDIC. Foreclosed covered loan collateral is transferred into covered foreclosed assets at the loan’s carrying value, inclusive of the acquisition date fair value discount.

Covered foreclosed assets are initially recorded at estimated fair value less estimated costs to sell on the acquisition date based on similar market comparable valuations less estimated selling costs. Any subsequent valuation adjustments due to declines in fair value will be charged to noninterest expense, and will be mostly offset by noninterest income representing the corresponding increase to the FDIC indemnification asset for the offsetting loss reimbursement amount. Any recoveries of previous valuation adjustments will be credited to noninterest expense with a corresponding charge to noninterest income for the portion of the recovery that is due to the FDIC.

Premises and Equipment

Land is carried at cost. Land improvements, buildings and equipment, including those acquired under capital lease, are stated at cost less accumulated depreciation and amortization. Depreciation and amortization expenses are computed using the straight-line method over the shorter of the estimated useful lives of the related assets or lease terms. Asset lives range from 3-10 years for furniture and equipment and 15-40 years for land improvements and buildings.

Goodwill and Other Intangible Assets

Goodwill represents the excess of costs over fair value of net assets of businesses acquired. Goodwill and other intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are not amortized, but instead tested for impairment at least annually. Intangible assets with estimable useful lives are amortized over their respective estimated useful lives to their estimated residual values, and reviewed for impairment.

The Company has an identifiable intangible asset consisting of core deposit intangibles (CDI). CDI are amortized over their respective estimated useful lives, and reviewed for impairment.

Impairment of Long-Lived Assets and Goodwill

Long-lived assets, such as premises and equipment, and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposed group classified as held for sale would be presented separately in the appropriate asset and liability sections of the consolidated balance sheet.

As of December 31 of each year, goodwill is tested for impairment, and is tested for impairment more frequently if events and circumstances indicate that the asset might be impaired. An impairment loss is recognized to the extent that the carrying amount exceeds the asset’s fair value. This determination is made at the reporting unit level. The Company may choose to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, the Company determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then goodwill is deemed not to be impaired. However, if the Company concludes otherwise, or if the Company elected not to first assess qualitative factors, then the Company performs the first step of a two-step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit. Second, if the carrying amount of the reporting unit exceeds its fair value, an impairment loss is recognized for any excess of the carrying amount of the reporting unit’s goodwill over the implied fair value of that goodwill. The implied fair value of goodwill is determined by allocating the fair value of the reporting unit in a manner similar to a purchase price allocation. The residual fair value after this allocation is the implied fair value of the reporting unit goodwill. Currently, and historically, the Company is comprised of only one reporting unit that operates within the business segment it has identified as “community banking”. Goodwill was not impaired as of December 31, 2017 because the fair value of the reporting unit exceeded its carrying value.

Mortgage Servicing Rights

Mortgage servicing rights (MSR) represent the Company’s right to a future stream of cash flows based upon the contractual servicing fee associated with servicing mortgage loans. Our MSR arise from residential and commercial mortgage loans that we originate and sell, but retain the right to service the loans. The net gain from the retention of the servicing right is included in gain on sale of loans in noninterest income when the loan is sold. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, the custodial earnings rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses. Servicing fees are recorded in noninterest income when earned.

The Company accounts for MSR at fair value. The determination of fair value of our MSR requires management judgment because they are not actively traded. The determination of fair value for MSR requires valuation processes which combine the use of discounted cash flow models and extensive analysis of current market data to arrive at an estimate of fair value. The cash flow and prepayment assumptions used in our discounted cash flow model are based on empirical data drawn from the historical performance of our MSR, which we believe are consistent with assumptions used by market participants valuing similar MSR, and from data obtained on the performance of similar MSR. The key assumptions used in the valuation of MSR include mortgage prepayment speeds and the discount rate. These variables can, and generally will, change from quarter to quarter as market conditions and projected interest rates change. The key risks inherent with MSR are prepayment speed and changes in interest rates. The Company uses an independent third party to determine fair value of MSR.

Indemnification Asset/Liability

The Company accounts for amounts receivable or payable under its loss-share agreements entered into with the FDIC in connection with its purchase and assumption of certain assets and liabilities of Granite as indemnification assets in accordance with FASB ASC Topic 805, Business Combinations. FDIC indemnification assets are initially recorded at fair value, based on the discounted value of expected future cash flows under the loss-share agreements. The difference between the fair value and the undiscounted cash flows the Company expects to collect from or pay to the FDIC will be accreted into noninterest income over the life of the FDIC indemnification asset. FDIC indemnification assets are reviewed quarterly and adjusted for any changes in expected cash flows based on recent performance and expectations for future performance of the covered portfolios. These adjustments are measured on the same basis as the related covered loans and covered other real estate owned. Any increases in cash flow of the covered assets over those expected will reduce the FDIC indemnification asset and any decreases in cash flow of the covered assets under those expected will increase the FDIC indemnification asset. Increases and decreases to the FDIC indemnification asset are recorded as adjustments to noninterest income.

Reserve for Unfunded Commitments

The reserve for unfunded commitments is established through a provision for losses – unfunded commitments charged to noninterest expense. The reserve for unfunded commitments is an amount that Management believes will be adequate to absorb probable losses inherent in existing commitments, including unused portions of revolving lines of credits and other loans, standby letters of credits, and unused deposit account overdraft privilege. The reserve for unfunded commitments is based on evaluations of the collectability, and prior loss experience of unfunded commitments. The evaluations take into consideration such factors as changes in the nature and size of the loan portfolio, overall loan portfolio quality, loan concentrations, specific problem loans and related unfunded commitments, and current economic conditions that may affect the borrower’s or depositor’s ability to pay.

Low Income Housing Tax Credits

The Company accounts for low income housing tax credits and the related qualified affordable housing projects using the proportional amortization method. Under the proportional amortization method, the Company amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense (benefit). Upon entering into a qualified affordable housing project, the Company records, in other liabilities, the entire amount that it has agreed to invest in the project, and an equal amount, in other assets, representing its investment in the project. As the Company disburses cash to satisfy its investment obligation, other liabilities are reduced. Over time, as the tax credits and other tax benefits of the project are realized by the Company, the investment recorded in other assets is reduced using the proportional amortization method.    

Revenue Recognition

The Company records revenue from contracts with customers in accordance with Accounting Standards Codification Topic 606, “Revenue from Contracts with Customers” (“Topic 606”). Under Topic 606, the Company must identify the contract with a customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract, and recognize revenue when (or as) the Company satisfies a performance obligation. Significant revenue has not been recognized in the current reporting period that results from performance obligations satisfied in previous periods.

Most of our revenue-generating transactions are not subject to ASC 606, including revenue generated from financial instruments, such as our loans and investment securities. In addition, certain noninterest income streams such as fees associated with mortgage servicing rights, financial guarantees, derivatives, and certain credit card fees are also not in scope of the new guidance. The Company’s noninterest revenue streams are largely based on transactional activity, or standard month-end revenue accruals such as asset management fees based on month-end market values. Consideration is often received immediately or shortly after the Company satisfies its performance obligation and revenue is recognized. The Company does not typically enter into long-term revenue contracts with customers, and therefore, does not experience significant contract balances. As of March 31, 2018 and December 31, 2017, the Company did not have any significant contract balances. The Company has evaluated the nature of its revenue streams and determined that further disaggregation of revenue into more granular categories beyond what is presented in the Note 21 was not necessary.

Income Taxes

The Company’s accounting for income taxes is based on an asset and liability approach. The Company recognizes the amount of taxes payable or refundable for the current year, and deferred tax assets and liabilities for the future tax consequences that have been recognized in its financial statements or tax returns. The measurement of tax assets and liabilities is based on the provisions of enacted tax laws. A valuation allowance, if needed, reduces deferred tax assets to the expected amount most likely to be realized. Realization of deferred tax assets is dependent upon the generation of a sufficient level of future taxable income and recoverable taxes paid in prior years. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets will be realized. Interest and/or penalties related to income taxes are reported as a component of noninterest income.

Off-Balance Sheet Credit Related Financial Instruments

In the ordinary course of business, the Company has entered into commitments to extend credit, including commitments under credit card arrangements, commercial letters of credit, and standby letters of credit. Such financial instruments are recorded when they are funded.

Geographical Descriptions

For the purpose of describing the geographical location of the Company’s loans, the Company has defined northern California as that area of California north of, and including, Stockton; central California as that area of the state south of Stockton, to and including, Bakersfield; and southern California as that area of the state south of Bakersfield.

Reclassifications

During the three months ended September 30, 2017, the Company changed its classification of 1st lien and 2nd lien non-owner occupied 1-4 residential real estate mortgage loans from commercial real estate mortgage loans to residential real estate mortgage loans and consumer home equity loans, respectively. This change in loan category classification was made to better align the Company’s financial reporting classifications with regulatory reporting classifications, and to properly classify these loans for regulatory risk-based capital ratio calculations.

Certain amounts reported in previous consolidated financial statements have been reclassified and recalculated to conform to the presentation in this report. These reclassifications did not affect previously reported net income, total loans or total shareholders’ equity.

Recent Accounting Pronouncements

FASB Accounting Standards Update (ASU) No.2014-09, Revenue from Contracts with Customers (Topic 606): ASU 2014-09 is intended to clarify the principles for recognizing revenue, and to develop common revenue standards and disclosure requirements that would: (1) remove inconsistencies and weaknesses in revenue requirements; (2) provide a more robust framework for addressing revenue issues; (3) improve comparability of revenue recognition practices across entities, industries, jurisdictions, and capital markets; (4) provide more useful information to users of financial statements through improved disclosures; and (5) simplify the preparation of financial statements by reducing the number of requirements to which an entity must refer. The guidance affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets. The core principle is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance provides steps to follow to achieve the core principle. An entity should disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Qualitative and quantitative information is required with regard to contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2017, including interim periods therein, with early adoption permitted for reporting periods beginning after December 15, 2016. ASU 2014-09 does not apply to revenue associated with financial instruments such as loans and investments, which are accounted for under other provisions of GAAP. The Company adopted ASU 2014-09 on January 1, 2018 utilizing the modified retrospective approach. Since there was no net income impact upon adoption of the new guidance, a cumulative effect adjustment to opening retained earnings was not deemed necessary.

In January 2016, the FASB issued ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities.” This ASU addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments by making targeted improvements to GAAP as follows: (1) require equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer; (2) simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. When a qualitative assessment indicates that impairment exists, an entity is required to measure the investment at fair value; (3) eliminate the requirement to disclose the fair value of financial instruments measured at amortized cost for entities that are not public business entities; (4) eliminate the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; (5) require public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (6) require an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (7) require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements; and (8) clarify that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets. The adoption of ASU No. 2016-01 on January 1, 2018 did not have a material impact on the Company’s Consolidated Financial Statements. In accordance with (1) above, the Company recorded a reclassification of cumulative unrealized losses of its marketable equity securities from accumulated other comprehensive income (loss) to retained earnings as of January 1, 2018. Additionally, the Company recognized changes in the fair value of its marketable equity securities in the condensed consolidated statements of net income for the three months ended March 31, 2018. In accordance with (5) above, the Company measured the fair value of its loan portfolio as of March 31, 2018 using an exit price notion (see Note 27 Fair Value Measurement).

FASB issued Accounting Standard Update (ASU) No. 2016-02, Leases (Topic 842). ASU 2016-2, among other things, requires lessees to recognize most leases on-balance sheet, increasing reported assets and liabilities. Lessor accounting remains substantially similar to current U.S. GAAP. ASU 2016-02will be effective for the Company on January 1, 2019, utilizing the modified retrospective transition approach. The Company is currently evaluating the provisions of ASU No. 2016-02 and has determined that the adoption of this standard will result in an increase in assets to recognize the present value of the lease obligations with a corresponding increase in liabilities; however, the Company does not expect this to have a material impact on the Company’s results of operations or cash flows.

FASB issued Accounting Standard Update (ASU) No. 2016-09, Compensation – Stock Compensation (Topic 718). ASU 2016-09, among other things, requires: (i) that all excess tax benefits and tax deficiencies (including tax benefits of dividends on share-based payment awards) should be recognized as income tax expense or benefit in the income statement, (ii) the tax effects of exercised or vested awards should be treated as discrete items in the reporting period in which they occur, (iii) an entity also should recognize excess tax benefits regardless of whether the benefit reduces taxes payable in the current period, (iv) excess tax benefits should be classified along with other income tax cash flows as an operating activity, (v) an entity can make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest (current GAAP) or account for forfeitures when they occur, (vi) the threshold to qualify for equity classification permits withholding up to the maximum statutory tax rates in the applicable jurisdictions, and (vii) cash paid by an employer when directly withholding shares for tax withholding purposes should be classified as a financing activity. ASU 2016-09 was effective for the Company on January 1, 2017 and due to the options exercised during the three months ended March 31, 2017, resulted in the recognition of $90,000 in excess tax benefits.

FASB issued ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326). ASU 2016-13 is the final guidance on the new current expected credit loss (‘‘CECL’’) model. ASU 2016-13, among other things, requires the incurred loss impairment methodology in current GAAP be replaced with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to estimate future credit loss estimates. As CECL encompasses all financial assets carried at amortized cost, the requirement that reserves be established based on an organization’s reasonable and supportable estimate of expected credit losses extends to held to maturity (‘‘HTM’’) debt securities. ASU 2016-13 amends the accounting for credit losses on available-for-sale securities (‘‘AFS’’), whereby credit losses will be presented as an allowance as opposed to a write-down. In addition, CECL will modify the accounting for purchased loans with credit deterioration since origination, so that reserves are established at the date of acquisition for purchased loans. Lastly, ASU 2016-13 requires enhanced disclosures on the significant estimates and judgments used to estimate credit losses, as well as on the credit quality and underwriting standards of an organization’s portfolio. These disclosures require organizations to present the currently required credit quality disclosures disaggregated by the year of origination or vintage. ASU 2016-13 allows for a modified retrospective approach with a cumulative effect adjustment to the balance sheet upon adoption (charge to retained earnings instead of the income statement). ASU 2016-13 will be effective for the Company on January 1, 2020, and early adoption is permitted. While the Company is currently evaluating the provisions of ASU 2016-13 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements, it has taken steps to prepare for the implementation when it becomes effective, such as forming an internal task force, gathering pertinent data, consulting with outside professionals, and evaluating its current IT systems. Management expects to recognize a one-time cumulative effect adjustment to the allowance for loan losses as of the first reporting period in which the new standard is effective, but cannot yet estimate the magnitude of the one-time adjustment or the overall impact of the new guidance on the Company’s financial position, results of operations or cash flows.

FASB issued ASU No. 2016-18, Statement of Cash Flows—Restricted Cash (Topic 230). ASU 2016-18 requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. ASU 2016-18 was effective for the Company on January 1, 2018 and is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU No. 2017-01, Business Combinations—Clarifying the Definition of a Business (Topic 805). ASU 2017-01 clarifies the definition and provides a more robust framework to use in determining when a set of assets and activities constitutes a business. ASU 2017-01 is intended to provide guidance when evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. ASU 2017-01 was effective for us on January 1, 2018 and did not have a significant impact on our financial statements.

FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other: Simplifying the Test for Goodwill Impairment (Topic 350): ASU 2017-04 eliminates step two of the goodwill impairment test (the hypothetical purchase price allocation used to determine the implied fair value of goodwill) when step one (determining if the carrying value of a reporting unit exceeds its fair value) is failed. Instead, entities simply will compare the fair value of a reporting unit to its carrying amount and record goodwill impairment for the amount by which the reporting unit’s carrying amount exceeds its fair value. ASU 2017-04will be effective for the Company on January 1, 2020 and is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU No. 2017-07, Compensation—Retirement Benefits (Topic 715). ASU 2017-07 requires that an employer report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the income statement separately from the service cost component. ASU 2017-07 was effective for the Company on January 1, 2018 and did not have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU 2017-08, Receivables—Nonrefundable Fees and Other Costs (Topic 310). ASU 2017-08 shortens the amortization period for certain callable debt securities held at a premium to require such premiums to be amortized to the earliest call date unless applicable guidance related to certain pools of securities is applied to consider estimated prepayments. Under prior guidance, entities were generally required to amortize premiums on individual, non-pooled callable debt securities as a yield adjustment over the contractual life of the security. ASU 2017-08 does not change the accounting for callable debt securities held at a discount. ASU 2017-08 will be effective for the Company on January 1, 2019, and is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU 2017-09, Compensation—Stock Compensation (Topic 718). ASU 2017-09 clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. Under ASU 2017-09, an entity will not apply modification accounting to a share-based payment award if all of the following are the same immediately before and after the change: (i) the award’s fair value, (ii) the award’s vesting conditions and (iii) the award’s classification as an equity or liability instrument. ASU 2017-09 was effective for the Company on January 1, 2018 and did not have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU 2018-02, Income Statement—Reporting Comprehensive Income (Topic 220). ASU 2018-02 allows, but does not require, entities to reclassify certain income tax effects in accumulated other comprehensive income (AOCI) to retained earnings that resulted from the Tax Cuts and Jobs Act (Tax Act) that was enacted on December 22, 2017. The Tax Act included a reduction to the Federal corporate income tax rate from 35 percent to 21 percent effective January 1, 2018. The amount of the reclassification would be the difference between the income tax effects in AOCI calculated using the historical Federal corporate income tax rate of 35 percent and the income tax effects in AOCI calculated using the newly enacted 21 percent Federal corporate income tax rate. The amendments in ASU 2018-02 are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company adopted ASU 2018-02 on January 1, 2018, and elected to reclassify certain income tax effects in AOCI to retained earnings. This change in accounting principle was accounted for as a cumulative-effect adjustment to the balance sheet resulting in a $1,093,000 increase to retained earnings and a corresponding decrease to AOCI on January 1, 2018.

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Business Combinations

3 Months Ended

Mar. 31, 2018

Business Combinations [Abstract]

Business Combinations

Note 2—Business Combinations

Proposed Merger with FNB Bancorp

On December 11, 2017, the Company and FNB Bancorp, a California corporation (“FNBB”), entered into an Agreement and Plan of Merger and Reorganization (the “Merger Agreement”) pursuant to which FNBB will be merged with and into the Company, with the Company as the surviving corporation (the “Merger”). Management expects the acquisition to close in the second quarter of 2018, subject to the satisfaction of customary closing conditions, including regulatory and shareholder approvals. The Merger Agreement provides that immediately after the Merger, FNBB’s bank subsidiary, First National Bank of Northern California (“First National Bank”), will merge with and into the Company’s bank subsidiary, Tri Counties Bank, with Tri Counties Bank as the surviving bank (the “Bank Merger”). The Merger and Bank Merger are collectively referred to as the “Proposed Transaction.”

The Merger Agreement provides that each share of FNBB common stock issued and outstanding immediately prior to the effective time of the Merger will be canceled and converted into the right to receive 0.98 shares of the Company’s common stock (the “Exchange Ratio”), with cash paid in lieu of fractional shares of the Company’s common stock.

Based on the closing price of the Company’s common stock of $41.64 on December 8, 2017, the consideration value was $40.81 per share of FNBB common stock or approximately $315.3 million in aggregate. The value of the merger consideration will fluctuate until closing based on the value of the Company’s stock and subject to a trading collar in certain circumstances. Upon consummation of the Merger, the shareholders of FNBB will own approximately 24% of the combined company.

The Merger Agreement includes a trading collar that could result in termination of the Merger Agreement or a change to the Exchange Ratio. First, the Company can elect to terminate the Merger Agreement if both (i) the average share price of the Company’s common stock for the 20 day period up to and including the fifth day prior to the closing date (the “Average Closing Share Price”) is greater than $49.78, which equals 120% of the average share price of the Company’s stock for the 20 trading-day period up to and including December 8, 2017, which was $41.48 (the “Initial Price”) and (ii) the Company’s common stock outperforms the KBW Regional Banking Index by more than 20%, unless FNBB agrees that the Exchange Ratio will be reduced and fewer shares of the Company’s common stock will be issued to FNBB shareholders on a per share basis. Conversely, FNBB can terminate the Merger Agreement if both (i) the Average Closing Share Price is less than $33.18, which is equivalent to 80% of the Initial Price, and (ii) the Company’s common stock underperforms the KBW Regional Banking Index by more than 20%, unless the Company agrees that the Exchange Ratio will be increased and more shares of the Company common stock will be issued to FNBB shareholders on a per share basis.

Upon consummation of the Merger, each outstanding and unexercised option to acquire shares of FNBB common stock held by FNBB’s employees and directors will be canceled and, in exchange, the holder of the option will be entitled to receive, whether or not the option is fully vested, a lump sum cash payment equal to the product of (1) the number of shares of FNBB common stock remaining under the option multiplied by (2) the Exchange Ratio multiplied by (3) the amount, if any, by which the Average Closing Share Price exceeds the exercise price of the option.

The consummation of the Merger is subject to a number of conditions, which include: (i) the approval of the Merger Agreement by FNBB’s shareholders and the approval of the Merger Agreement and the issuance of shares of the Company common stock by the Company’s shareholders; (ii) as of the closing of the Merger, FNBB shall have tangible common equity of not less than $119.0 million, subject to credit for certain merger-related expenses and certain assumptions and adjustments that are set forth in the Merger Agreement; (iii) the receipt of all necessary regulatory approvals for the Proposed Transaction, without the imposition of conditions or requirements that the Company’s Board of Directors reasonably determines in good faith would, individually or in the aggregate, materially reduce the economic benefits of the Proposed Transaction; (iv) the absence of any regulation, judgment, decree, injunction or other order of a governmental authority which prohibits the consummation of the Proposed Transaction or which prohibits or makes illegal the consummation of the Proposed Transaction; (v) the effective registration of the shares of the Company’s Common Stock to be issued to FNBB’s shareholders with the Securities and Exchange Commission (the “SEC”) and the approval of such shares for listing on the Nasdaq Global Select Market; (vi) all representations and warranties made by the Company and FNBB in the Merger Agreement must remain true and correct, except for certain inaccuracies that would not have, or would not reasonably be expected to have, a material adverse effect; and (vii) the Company and FNBB must have performed their respective obligations under the Merger Agreement in all material respects.

On March 21, 2018, the Company filed a registration statement on Form S-4 that included historical and pro forma information required in connection with the Merger. The registration statement on Form S-4 was subsequently amended on April 18, 2018.

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Investment Securities

3 Months Ended

Mar. 31, 2018

Investments Schedule [Abstract]

Investment Securities

Note 3—Investment Securities

The amortized cost and estimated fair values of investments in debt securities are summarized in the following tables:

	March 31, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(in thousands)
Debt Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	633,310	$	317	$	(16,970	)	$	616,657
Obligations of states and political subdivisions		121,560		466		(2,788	)		119,238
Total debt securities available for sale	$	754,870	$	783	$	(19,758	)	$	735,895
Debt Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	481,457	$	533	$	(7,737	)	$	474,253
Obligations of states and political subdivisions		14,578		39		(231	)		14,386
Total debt securities held to maturity	$	496,035	$	572	$	(7,968	)	$	488,639
	December 31, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(in thousands)
Debt Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	609,695	$	695	$	(5,601	)	$	604,789
Obligations of states and political subdivisions		121,597		1,888		(329	)		123,156
Total debt securities available for sale	$	731,292	$	2,583	$	(5,930	)	$	727,945
Debt Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	500,271	$	5,101	$	(1,889	)	$	503,483
Obligations of states and political subdivisions		14,573		146		(37	)		14,682
Total debt securities held to maturity	$	514,844	$	5,247	$	(1,926	)	$	518,165

No investment securities were sold during the three months ended March 31, 2018 or the three months ended March 31, 2017. Investment securities with an aggregate carrying value of $415,542,000 and $285,596,000 at March 31, 2018 and December 31, 2017, respectively, were pledged as collateral for specific borrowings, lines of credit and local agency deposits.

The amortized cost and estimated fair value of debt securities at March 31, 2018 by contractual maturity are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. At March 31, 2018, obligations of U.S. government corporations and agencies with a cost basis totaling $1,114,767,000 consist almost entirely of residential real estate mortgage-backed securities whose contractual maturity, or principal repayment, will follow the repayment of the underlying mortgages. For purposes of the following table, the entire outstanding balance of these mortgage-backed securities issued by U.S. government corporations and agencies is categorized based on final maturity date. At March 31, 2018, the Company estimates the average remaining life of these mortgage-backed securities issued by U.S. government corporations and agencies to be approximately 6.1 years. Average remaining life is defined as the time span after which the principal balance has been reduced by half.

Debt Securities	Available for Sale				Held to Maturity
(In thousands)	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due in one year	$	2	$	2	$	—	$	—
Due after one year through five years		235		236		1,215		1,228
Due after five years through ten years		3,324		3,452		20,631		20,291
Due after ten years		751,309		732,205		474,189		467,120
Totals	$	754,870	$	735,895	$	496,035	$	488,639

Gross unrealized losses on debt securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position were as follows:

	Less than 12 months					12 months or more					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
						(in thousands)
March 31, 2018
Debt Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	434,302	$	(10,345	)	$	158,324	$	(6,625	)	$	592,626	$	(16,970	)
Obligations of states and political subdivisions		65,047		(1,456	)		16,042		(1,332	)		81,089		(2,788	)
Total debt securities available for sale	$	499,349	$	(11,801	)	$	174,366	$	(7,957	)	$	673,715	$	(19,758	)
Debt Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	299,575	$	(4,551	)	$	89,809	$	(3,186	)	$	389,384	$	(7,737	)
Obligations of states and political subdivisions		8,901		(144	)		2,579		(87	)		11,480		(231	)
Total debt securities held to maturity	$	308,476	$	(4,695	)	$	92,388	$	(3,273	)	$	400,864	$	(7,968	)
	Less than 12 months					12 months or more					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
						(in thousands)
December 31, 2017
Debt Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	284,367	$	(2,176	)	$	166,338	$	(3,425	)	$	450,705	$	(5,601	)
Obligations of states and political subdivisions		4,904		(35	)		17,085		(294	)		21,989		(329	)
Total securities available for sale	$	289,271	$	(2,211	)	$	183,423	$	(3,719	)	$	472,694	$	(5,930	)
Debt Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	93,017	$	(567	)	$	95,367	$	(1,322	)	$	188,384	$	(1,889	)
Obligations of states and political subdivisions		1,488		(7	)		2,637		(30	)		4,125		(37	)
Total debt securities held to maturity	$	94,505	$	(574	)	$	98,004	$	(1,352	)	$	192,509	$	(1,926	)

Obligations of U.S. government corporations and agencies: Unrealized losses on investments in obligations of U.S. government corporations and agencies are caused by interest rate increases. The contractual cash flows of these securities are guaranteed by U.S. Government Sponsored Entities (principally Fannie Mae and Freddie Mac). It is expected that the securities would not be settled at a price less than the amortized cost of the investment. Because the decline in fair value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell and more likely than not will not be required to sell, these investments are not considered other-than-temporarily impaired. At March 31, 2018, 128 debt securities representing obligations of U.S. government corporations and agencies had unrealized losses with aggregate depreciation of (2.45%) from the Company’s amortized cost basis.

Obligations of states and political subdivisions: The unrealized losses on investments in obligations of states and political subdivisions were caused by increases in required yields by investors in these types of securities. It is expected that the securities would not be settled at a price less than the amortized cost of the investment. Because the decline in fair value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell and more likely than not will not be required to sell, these investments are not considered other-than-temporarily impaired. At March 31, 2018, 94 debt securities representing obligations of states and political subdivisions had unrealized losses with aggregate depreciation of (3.16%) from the Company’s amortized cost basis.

Marketable equity securities: All unrealized losses recognized during the reporting period were for equity securities still held at March 31, 2018.

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Loans

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Loans

Note 4 — Loans

A summary of loan balances follows (in thousands):

	March 31, 2018
	Originated			PNCI			PCI - Cash basis			PCI - Other			Total
Mortgage loans on real estate:
Residential 1-4 family	$	323,161		$	61,206		$	—		$	1,744		$	386,111
Commercial		1,754,062			211,168			—			8,038			1,973,268
Total mortgage loan on real estate		2,077,223			272,374			—			9,782			2,359,379
Consumer:
Home equity lines of credit		266,651			14,939			1,619			42			283,251
Home equity loans		38,889			2,558			—			485			41,932
Other		21,422			2,141			—			43			23,606
Total consumer loans		326,962			19,638			1,619			570			348,789
Commercial		205,673			7,837			—			2,505			216,015
Construction:
Residential		71,589			9			—			—			71,598
Commercial		73,701			251			—			—			73,952
Total construction		145,290			260			—			—			145,550
Total loans, net of deferred loan fees and discounts	$	2,755,148		$	300,109		$	1,619		$	12,857		$	3,069,733
Total principal balance of loans owed, net of charge-offs	$	2,764,819		$	306,924		$	5,167		$	16,654		$	3,093,564
Unamortized net deferred loan fees		(9,671	)		—			—			—			(9,671	)
Discounts to principal balance of loans owed, net of charge-offs		—			(6,815	)		(3,548	)		(3,797	)		(14,160	)
Total loans, net of unamortized deferred loan fees and discounts	$	2,755,148		$	300,109		$	1,619		$	12,857		$	3,069,733
Allowance for loan losses	$	(29,057	)	$	(748	)	$	(8	)	$	(160	)	$	(29,973	)
	December 31, 2017
	Originated			PNCI			PCI - Cash basis			PCI - Other			Total
Mortgage loans on real estate:
Residential 1-4 family	$	320,522		$	63,519		$	—		$	1,385		$	385,426
Commercial		1,690,510			215,823			—			8,563			1,914,896
Total mortgage loan on real estate		2,011,032			279,342			—			9,948			2,300,322
Consumer:
Home equity lines of credit		269,942			16,248			2,069			429			288,688
Home equity loans		39,848			2,698			—			485			43,031
Other		22,859			2,251			—			45			25,155
Total consumer loans		332,649			21,197			2,069			959			356,874
Commercial		209,437			8,391			—			2,584			220,412
Construction:
Residential		67,920			10			—			—			67,930
Commercial		69,364			263			—			—			69,627
Total construction		137,284			273			—			—			137,557
Total loans, net of deferred loan fees and discounts	$	2,690,402		$	309,203		$	2,069		$	13,491		$	3,015,165
Total principal balance of loans owed, net of charge-offs	$	2,699,053		$	316,238		$	5,863		$	17,318		$	3,038,472
Unamortized net deferred loan fees		(8,651	)		—			—			—			(8,651	)
Discounts to principal balance of loans owed, net of charge-offs		—			(7,035	)		(3,794	)		(3,827	)		(14,656	)
Total loans, net of unamortized deferred loan fees and discounts	$	2,690,402		$	309,203		$	2,069		$	13,491		$	3,015,165
Allowance for loan losses	$	(29,122	)	$	(929	)	$	(17	)	$	(255	)	$	(30,323	)

The following is a summary of the change in accretable yield for PCI – other loans during the periods indicated (in thousands):

	Three months ended March 31,
	2018			2017
Change in accretable yield:
Balance at beginning of period	$	4,262		$	10,348
Accretion to interest income		(255	)		(902	)
Reclassification (to) from nonaccretable difference		140			114
Balance at end of period	$	4,147		$	9,560

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Allowance for Loan Losses

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Allowance for Loan Losses

Note 5 – Allowance for Loan Losses

The following tables summarize the activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.

	Allowance for Loan Losses – Three Months Ended March 31, 2018
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Beginning balance	$	2,317		$	11,441		$	5,800		$	1,841		$	586		$	6,512		$	1,184		$	642		$	30,323
Charge-offs		(1	)		—			(80	)		—			(194	)		(205	)		—			—			(480	)
Recoveries		—			15			209			14			78			50			—			—			366
(Benefit) provision		(146	)		39			(517	)		(119	)		100			35			167			205			(236	)
Ending balance	$	2,170		$	11,495		$	5,412		$	1,736		$	570		$	6,392		$	1,351		$	847		$	29,973
Ending balance:
Individ. evaluated for impairment	$	190		$	154		$	448		$	130		$	56		$	2,113			—			—		$	3,091
Loans pooled for evaluation	$	1,910		$	11,281		$	4,956		$	1,606		$	514		$	4,249		$	1,351		$	847		$	26,714
Loans acquired with deteriorated credit quality	$	70		$	60		$	8			—			—		$	30			—			—		$	168
	Loans, net of unearned fees – As of March 31, 2018
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	386,111		$	1,973,268		$	283,251		$	41,932		$	23,606		$	216,015		$	71,598		$	73,952		$	3,069,733
Individ. evaluated for impairment	$	5,535		$	11,110		$	2,450		$	1,673		$	278		$	4,621		$	136			—		$	25,803
Loans pooled for evaluation	$	378,832		$	1,954,120		$	279,140		$	39,774		$	23,285		$	208,889		$	71,462		$	73,952		$	3,029,454
Loans acquired with deteriorated credit quality	$	1,744		$	8,038		$	1,661		$	485		$	43		$	2,505			—			—		$	14,476
	Allowance for Loan Losses—Year Ended December 31, 2017
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Beginning balance	$	2,748		$	11,517		$	7,044		$	2,644		$	622		$	5,831		$	1,417		$	680		$	32,503
Charge-offs		(60	)		(186	)		(98	)		(332	)		(1,186	)		(1,444	)		(1,104	)		—			(4,410	)
Recoveries		—			397			698			242			375			428			—			1			2,141
(Benefit) provision		(371	)		(287	)		(1,844	)		(713	)		775			1,697			871			(39	)		89
Ending balance	$	2,317		$	11,441		$	5,800		$	1,841		$	586		$	6,512		$	1,184		$	642		$	30,323
Ending balance:
Individ. evaluated for impairment	$	230		$	30		$	427		$	107		$	57		$	1,848			—			—		$	2,699
Loans pooled for evaluation	$	1,932		$	11,351		$	5,356		$	1,734		$	529		$	4,624		$	1,184		$	642		$	27,352
Loans acquired with deteriorated credit quality	$	155		$	60		$	17			—			—		$	40			—			—		$	272
	Loans, net of unearned fees – As of December 31, 2017
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	385,426		$	1,914,896		$	288,688		$	43,031		$	25,155		$	220,412		$	67,930		$	69,627		$	3,015,165
Individ. evaluated for impairment	$	5,298		$	13,911		$	2,688		$	1,470		$	257		$	4,470		$	140			—		$	28,234
Loans pooled for evaluation	$	378,743		$	1,892,422		$	283,502		$	41,076		$	24,853		$	213,358		$	67,790		$	69,627		$	2,971,371
Loans acquired with deteriorated credit quality	$	1,385		$	8,563		$	2,498		$	485		$	45		$	2,584			—			—		$	15,560
	Allowance for Loan Losses – Three Months Ended March 31, 2017
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Beginning balance	$	2,748		$	11,517		$	7,044		$	2,644		$	622		$	5,831		$	1,417		$	680		$	32,503
Charge-offs		—			—			(71	)		(31	)		(174	)		(133	)		—			—			(409	)
Recoveries		—			110			46			12			141			170			—			1			480
(Benefit) provision		(86	)		(85	)		(489	)		(174	)		6			(542	)		(78	)		(109	)		(1,557	)
Ending balance	$	2,662		$	11,542		$	6,530		$	2,451		$	595		$	5,326		$	1,339		$	572		$	31,017
Ending balance:
Individ. evaluated for impairment	$	249		$	124		$	400		$	57		$	31		$	811		$	14			—		$	1,686
Loans pooled for evaluation	$	2,188		$	9,971		$	6,122		$	2,328		$	564		$	3,873		$	1,282		$	572		$	26,900
Loans acquired with deteriorated credit quality	$	225		$	1,447		$	8		$	66			—		$	642		$	43			—		$	2,431
	Loans, net of unearned fees – As of March 31, 2017
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	309,701		$	1,761,114		$	283,596		$	40,241		$	29,313		$	212,685		$	59,699		$	64,843		$	2,761,192
Individ. evaluated for impairment	$	3,849		$	16,979		$	2,204		$	1,241		$	280		$	3,072		$	25			—		$	27,650
Loans pooled for evaluation	$	304,493		$	1,731,785		$	277,388		$	37,867		$	28,967		$	205,832		$	58,830		$	64,843		$	2,710,005
Loans acquired with deteriorated credit quality	$	1,359		$	12,350		$	4,004		$	1,133		$	66		$	3,781		$	844			—		$	23,537

As part of the on-going monitoring of the credit quality of the Company’s loan portfolio, management tracks certain credit quality indicators including, but not limited to, trends relating to (i) the level of criticized and classified loans, (ii) net charge-offs, (iii) non-performing loans, and (iv) delinquency within the portfolio.

The Company utilizes a risk grading system to assign a risk grade to each of its loans. Loans are graded on a scale ranging from Pass to Loss. A description of the general characteristics of the risk grades is as follows:

• Pass – This grade represents loans ranging from acceptable to very little or no credit risk. These loans typically meet most if not all policy standards in regard to: loan amount as a percentage of collateral value, debt service coverage, profitability, leverage, and working capital.

• Special Mention – This grade represents “Other Assets Especially Mentioned” in accordance with regulatory guidelines and includes loans that display some potential weaknesses which, if left unaddressed, may result in deterioration of the repayment prospects for the asset or may inadequately protect the Company’s position in the future. These loans warrant more than normal supervision and attention.

• Substandard – This grade represents “Substandard” loans in accordance with regulatory guidelines. Loans within this rating typically exhibit weaknesses that are well defined to the point that repayment is jeopardized. Loss potential is, however, not necessarily evident. The underlying collateral supporting the credit appears to have sufficient value to protect the Company from loss of principal and accrued interest, or the loan has been written down to the point where this is true. There is a definite need for a well-defined workout/rehabilitation program.

• Doubtful – This grade represents “Doubtful” loans in accordance with regulatory guidelines. An asset classified as Doubtful has all the weaknesses inherent in a loan classified Substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. Pending factors include proposed merger, acquisition, or liquidation procedures, capital injection, perfecting liens on additional collateral, and financing plans.

• Loss – This grade represents “Loss” loans in accordance with regulatory guidelines. A loan classified as Loss is considered uncollectible and of such little value that its continuance as a bankable asset is not warranted. This classification does not mean that the loan has absolutely no recovery or salvage value, but rather that it is not practical or desirable to defer writing off the loan, even though some recovery may be affected in the future. The portion of the loan that is graded loss should be charged off no later than the end of the quarter in which the loss is identified.

The following tables present ending loan balances by loan category and risk grade for the periods indicated:

	Credit Quality Indicators – As of March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
Originated loans:
Pass	$	317,799	$	1,716,599	$	263,270	$	35,730	$	21,067	$	193,829	$	71,482	$	68,846	$	2,688,622
Special mention		2,274		23,679		1,628		1,532		238		7,263		—		4,855		41,469
Substandard		3,088		13,784		1,753		1,627		117		4,581		107		—		25,057
Loss		—		—		—		—		—		—		—		—		—
Total originated	$	323,161	$	1,754,062	$	266,651	$	38,889	$	21,422	$	205,673	$	71,589	$	73,701	$	2,755,148
PNCI loans:
Pass	$	59,184	$	201,641	$	13,686	$	2,301	$	2,067	$	7,837	$	9	$	251	$	286,976
Special mention		214		8,977		282		184		37		—		—		—		9,694
Substandard		1,808		550		971		73		37		—		—		—		3,439
Loss		—		—		—		—		—		—		—		—		—
Total PNCI	$	61,206	$	211,168	$	14,939	$	2,558	$	2,141	$	7,837	$	9	$	251	$	300,109
PCI loans	$	1,744	$	8,038	$	1,661	$	485	$	43	$	2,505		—		—	$	14,476
Total loans	$	386,111	$	1,973,268	$	283,251	$	41,932	$	23,606	$	216,015	$	71,598	$	73,952	$	3,069,733
	Credit Quality Indicators – As of December 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
Originated loans:
Pass	$	315,120	$	1,649,333	$	265,345	$	37,428	$	22,432	$	195,208	$	67,813	$	64,492	$	2,617,171
Special mention		2,234		18,434		2,558		800		272		9,492		—		4,872		38,662
Substandard		3,168		22,743		2,039		1,620		155		4,737		107		—		34,569
Loss		—		—		—		—		—		—		—		—		—
Total originated	$	320,522	$	1,690,510	$	269,942	$	39,848	$	22,859	$	209,437	$	67,920	$	69,364	$	2,690,402
PNCI loans:
Pass	$	61,411	$	203,751	$	14,866	$	2,433	$	2,207	$	8,390	$	10	$	263	$	293,331
Special mention		218		11,513		450		188		38		1		—		—		12,408
Substandard		1,890		559		932		77		6		—		—		—		3,464
Loss		—		—		—		—		—		—		—		—		—
Total PNCI	$	63,519	$	215,823	$	16,248	$	2,698	$	2,251	$	8,391	$	10	$	263	$	309,203
PCI loans	$	1,385	$	8,563	$	2,498	$	485	$	45	$	2,584		—		—	$	15,560
Total loans	$	385,426	$	1,914,896	$	288,688	$	43,031		25,155	$	220,412	$	67,930	$	69,627	$	3,015,165

Consumer loans, whether unsecured or secured by real estate, automobiles, or other personal property, are susceptible to three primary risks; non-payment due to income loss, over-extension of credit and, when the borrower is unable to pay, shortfall in collateral value. Typically non-paymentis due to loss of job and will follow general economic trends in the marketplace driven primarily by rises in the unemployment rate. Loss of collateral value can be due to market demand shifts, damage to collateral itself or a combination of the two.

Problem consumer loans are generally identified by payment history of the borrower (delinquency). The Bank manages its consumer loan portfolios by monitoring delinquency and contacting borrowers to encourage repayment, suggest modifications if appropriate, and, when continued scheduled payments become unrealistic, initiate repossession or foreclosure through appropriate channels. Collateral values may be determined by appraisals obtained through Bank approved, licensed appraisers, qualified independent third parties, public value information (blue book values for autos), sales invoices, or other appropriate means. Appropriate valuations are obtained at initiation of the credit and periodically (every 3-12 months depending on collateral type) once repayment is questionable and the loan has been classified.

Commercial real estate loans generally fall into two categories, owner-occupied and non-owner occupied. Loans secured by owner occupied real estate are primarily susceptible to changes in the business conditions of the related business. This may be driven by, among other things, industry changes, geographic business changes, changes in the individual fortunes of the business owner, and general economic conditions and changes in business cycles. These same risks apply to commercial loans whether secured by equipment or other personal property or unsecured. Losses on loans secured by owner occupied real estate, equipment, or other personal property generally are dictated by the value of underlying collateral at the time of default and liquidation of the collateral. When default is driven by issues related specifically to the business owner, collateral values tend to provide better repayment support and may result in little or no loss. Alternatively, when default is driven by more general economic conditions, underlying collateral generally has devalued more and results in larger losses due to default. Loans secured by non-owner occupied real estate are primarily susceptible to risks associated with swings in occupancy or vacancy and related shifts in lease rates, rental rates or room rates. Most often these shifts are a result of changes in general economic or market conditions or overbuilding and resultant over-supply. Losses are dependent on value of underlying collateral at the time of default. Values are generally driven by these same factors and influenced by interest rates and required rates of return as well as changes in occupancy costs.

Construction loans, whether owner occupied or non-owner occupied commercial real estate loans or residential development loans, are not only susceptible to the related risks described above but the added risks of construction itself including cost over-runs, mismanagement of the project, or lack of demand or market changes experienced at time of completion. Again, losses are primarily related to underlying collateral value and changes therein as described above.

Problem C&I loans are generally identified by periodic review of financial information which may include financial statements, tax returns, rent rolls and payment history of the borrower (delinquency). Based on this information the Bank may decide to take any of several courses of action including demand for repayment, additional collateral or guarantors, and, when repayment becomes unlikely through borrower’s income and cash flow, repossession or foreclosure of the underlying collateral.

Collateral values may be determined by appraisals obtained through Bank approved, licensed appraisers, qualified independent third parties, public value information (blue book values for autos), sales invoices, or other appropriate means. Appropriate valuations are obtained at initiation of the credit and periodically (every 3-12 months depending on collateral type) once repayment is questionable and the loan has been classified.

Once a loan becomes delinquent and repayment becomes questionable, a Bank collection officer will address collateral shortfalls with the borrower and attempt to obtain additional collateral. If this is not forthcoming and payment in full is unlikely, the Bank will estimate its probable loss, using a recent valuation as appropriate to the underlying collateral less estimated costs of sale, and charge the loan down to the estimated net realizable amount. Depending on the length of time until ultimate collection, the Bank may revalue the underlying collateral and take additional charge-offs as warranted. Revaluations may occur as often as every 3-12 months depending on the underlying collateral and volatility of values. Final charge-offs or recoveries are taken when collateral is liquidated and actual loss is known. Unpaid balances on loans after or during collection and liquidation may also be pursued through lawsuit and attachment of wages or judgment liens on borrower’s other assets.

The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual Originated Loans – As of March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
Originated loan balance:
Past due:
30-59 Days	$	2,217	$	5,531	$	938	$	1,490	$	63	$	915	$	298	$	—	$	11,452
60-89 Days		—		—		26		18		18		534		—		1,249		1,845
> 90 Days		846		1,162		320		154		—		1,557		—		—		4,039
Total past due		3,063		6,693		1,284		1,662		81		3,006		298		1,249		17,336
Current		320,098		1,747,369		265,367		37,227		21,341		202,667		71,291		72,452		2,737,812
Total originated loans	$	323,161	$	1,754,062	$	266,651	$	38,889	$	21,422	$	205,673	$	71,589	$	73,701	$	2,755,148
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	2,235	$	7,925	$	733	$	1,193	$	4	$	3,990		—		—	$	16,080

The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual PNCI Loans – As of March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
PNCI loan balance:
Past due:
30-59 Days	$	2,537		—	$	362	$	2		—	$	1		—		—	$	2,902
60-89 Days		—		—		—		—		4		—		—		—		4
> 90 Days		—		—		146		—		28		—		—		—		174
Total past due		2,537		—		508		2		32		1		—		—		3,080
Current		58,669		211,168		14,431		2,556		2,109		7,836		9		251		297,029
Total PNCI loans	$	61,206	$	211,168	$	14,939	$	2,558	$	2,141	$	7,837	$	9	$	251	$	300,109
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	1,067		—	$	571	$	40	$	33		—		—		—	$	1,711

The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual Originated Loans – As of December 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
Originated loan balance:
Past due:
30-59 Days	$	1,740	$	158	$	528	$	511	$	56	$	956	$	34		—	$	3,983
60-89 Days		510		987		48		107		36		738		—		—		2,426
> 90 Days		243		—		372		373		3		1,527		—		—		2,518
Total past due	$	2,493	$	1,145	$	948	$	991	$	95	$	3,221	$	34		—	$	8,927
Current		318,029		1,689,365		268,994		38,857		22,764		206,216		67,886	$	69,364		2,681,475
Total originated loans	$	320,522	$	1,690,510	$	269,942	$	39,848	$	22,859	$	209,437	$	67,920	$	69,364	$	2,690,402
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	1,725	$	8,144	$	811	$	1,106	$	7	$	3,669		—		—	$	15,462

The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual PNCI Loans – As of December 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
PNCI loan balance:
Past due:
30-59 Days	$	1,495	$	70	$	298	$	30	$	6		—		—		—	$	1,899
60-89 Days		90		—		228		—		26		—		—		—		344
> 90 Days		109		—		330		—		—		—		—		—		439
Total past due	$	1,694	$	70	$	856	$	30	$	32		—		—		—	$	2,682
Current		61,825		215,753		15,392		2,668		2,219	$	8,391	$	10	$	263		306,521
Total PNCI loans	$	63,519	$	215,823	$	16,248	$	2,698	$	2,251	$	8,391	$	10	$	263	$	309,203
> 90 Days and still accruing	$	81		—	$	200		—		—		—		—		—	$	281
Nonaccrual loans	$	1,012		—	$	402	$	44	$	5		—		—		—	$	1,463

Impaired originated loans are those where management has concluded that it is probable that the borrower will be unable to pay all amounts due under the original contractual terms. The following tables show the recorded investment (financial statement balance), unpaid principal balance, average recorded investment, and interest income recognized for impaired Originated and PNCI loans, segregated by those with no related allowance recorded and those with an allowance recorded for the periods indicated.

	Impaired Originated Loans – As of, or for the Three Months Ended, March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	2,678	$	9,848	$	888	$	1,193		—	$	881	$	136		—	$	15,624
Unpaid principal	$	2,829	$	10,126	$	944	$	1,548		—	$	894	$	136		—	$	16,477
Average recorded investment	$	2,368	$	11,474	$	991	$	1,150	$	2	$	728	$	138		—	$	16,851
Interest income recognized	$	19	$	35	$	6		—		—	$	9	$	2		—	$	71
With an allowance recorded:
Recorded investment	$	1,525	$	1,262	$	527	$	196	$	4	$	3,740		—		—	$	7,254
Unpaid principal	$	1,549	$	1,281	$	534	$	196	$	4	$	3,862		—		—	$	7,426
Related allowance	$	190	$	154	$	146	$	10	$	4	$	2,113		—		—	$	2,617
Average recorded investment	$	1,703	$	1,036	$	464	$	197	$	4	$	3,817		—		—	$	7,221
Interest income recognized	$	9	$	9	$	4	$	2		—	$	17		—		—	$	41
	Impaired PNCI Loans – As of, or for the Three Months Ended, March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	1,332		—	$	501	$	40	$	28		—		—		—	$	1,901
Unpaid principal	$	1,390		—	$	529	$	54	$	28		—		—		—	$	2,001
Average recorded investment	$	1,345		—	$	546	$	42	$	14		—		—		—	$	1,947
Interest income recognized	$	2		—	$	2				—		—		—		—	$	4
With an allowance recorded:
Recorded investment		—		—	$	534	$	244	$	246		—		—		—	$	1,024
Unpaid principal		—		—	$	536	$	244	$	246		—		—		—	$	1,026
Related allowance		—		—	$	302	$	120	$	52		—		—		—	$	474
Average recorded investment		—		—	$	568	$	183	$	248		—		—		—	$	999
Interest income recognized		—		—	$	3	$	3	$	2		—		—		—	$	8
	Impaired Originated Loans – As of, or for the Twelve Months Ended, December 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	2,058	$	13,101	$	1,093	$	1,107	$	4	$	575	$	140		—	$	18,078
Unpaid principal	$	2,109	$	13,360	$	1,175	$	1,429	$	52	$	585	$	140		—	$	18,850
Average recorded investment	$	1,875	$	13,123	$	1,287	$	852	$	10	$	668	$	76		—	$	17,891
Interest income recognized	$	85	$	609	$	39	$	14		—	$	18	$	9		—	$	774
With an allowance recorded:
Recorded investment	$	1,881	$	810	$	401	$	198	$	3	$	3,895		—		—	$	7,188
Unpaid principal	$	1,914	$	826	$	406	$	198	$	3	$	3,981		—		—	$	7,328
Related allowance	$	230	$	30	$	111	$	10	$	3	$	1,848		—		—	$	2,232
Average recorded investment	$	1,626	$	728	$	415	$	341	$	10	$	3,615		—		—	$	6,735
Interest income recognized	$	58	$	36	$	8	$	10		—	$	166		—		—	$	278
	Impaired PNCI Loans – As of, or for the Twelve Months Ended, December 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	1,359		—	$	591	$	44		—		—		—		—	$	1,994
Unpaid principal	$	1,404		—	$	612	$	57		—		—		—		—	$	2,073
Average recorded investment	$	911	$	913	$	663	$	56	$	2		—		—		—	$	2,545
Interest income recognized	$	24		—	$	22		—		—		—		—		—	$	46
With an allowance recorded:
Recorded investment		—		—	$	603	$	121	$	250		—		—		—	$	974
Unpaid principal		—		—	$	604	$	121	$	250		—		—		—	$	975
Related allowance		—		—	$	316	$	97	$	54		—		—		—	$	467
Average recorded investment	$	130	$	66	$	577	$	61	$	184		—		—		—	$	1,018
Interest income recognized		—		—	$	26	$	6	$	11		—		—		—	$	43

	Impaired Originated Loans – As of, or for the Three Months Ended, March 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	1,782	$	14,431	$	1,064	$	743	$	5	$	1,289	$	11		—	$	19,325
Unpaid principal	$	1,793	$	14,881	$	1,144	$	1,085	$	6	$	1,312	$	16		—	$	20,237
Average recorded investment	$	2,834	$	20,770	$	2,013	$	845	$	12	$	932	$	7		—	$	27,413
Interest income recognized	$	20	$	98	$	6	$	1		—	$	7		—		—	$	132
With an allowance recorded:
Recorded investment	$	1,378	$	640	$	427	$	440	$	21	$	1,783	$	14		—	$	4,703
Unpaid principal	$	1,382	$	640	$	440	$	443	$	22	$	1,842	$	14		—	$	4,783
Related allowance	$	172	$	18	$	106	$	57	$	14	$	811	$	14		—	$	1,192
Average recorded investment	$	1,692	$	1,029	$	1,076	$	557	$	11	$	1,938	$	7		—	$	6,310
Interest income recognized	$	11	$	9	$	1	$	5		—	$	14		—		—	$	40
	Impaired PNCI Loans – As of, or for the Three Months Ended, March 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	433	$	1,777	$	220	$	58	$	138		—		—		—	$	2,626
Unpaid principal	$	455	$	2,011	$	233	$	67	$	139		—		—		—	$	2,905
Average recorded investment	$	654	$	1,455	$	337	$	64	$	86	$	1		—	$	245	$	2,842
Interest income recognized	$	2		—	$	1		—	$	2		—		—		—	$	5
With an allowance recorded:
Recorded investment	$	256	$	131	$	493		—	$	116		—		—		—	$	996
Unpaid principal	$	256	$	131	$	493		—	$	116		—		—		—	$	996
Related allowance	$	77	$	106	$	295		—	$	16		—		—		—	$	494
Average recorded investment	$	128	$	1,440	$	550	$	19	$	175		—		—		—	$	2,312
Interest income recognized	$	2	$	2	$	5		—	$	1		—		—		—	$	10

At March 31, 2018, $9,781,000 of originated loans were TDR and classified as impaired. The Company had obligations to lend $1,000 of additional funds on these TDR as of March 31, 2018. At March 31, 2018, $1,471,000 of PNCI loans were TDR and classified as impaired. The Company had no obligations to lend additional funds on these TDR as of March 31, 2018.

At December 31, 2017, $12,517,000 of Originated loans were TDRs and classified as impaired. The Company had obligations to lend $1,000 of additional funds on these TDRs as of December 31, 2017. At December 31, 2017, $1,352,000 of PNCI loans were TDRs and classified as impaired. The Company had no obligations to lend additional funds on these TDRs as of December 31, 2017.

At March 31, 2017, $12,285,000 of originated loans were TDR and classified as impaired. The Company had obligations to lend $70,000 of additional funds on these TDR as of March 31, 2017. At March 31, 2017, $1,470,000 of PNCI loans were TDR and classified as impaired. The Company had no obligations to lend additional funds on these TDR as of March 31, 2017.

The following table shows certain information regarding TDRs that occurred during the period indicated:

	TDR Information for the Three Months Ended March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(dollars in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
Number		—		1		1		1		—		—		—		—		3
Pre-mod outstanding principal balance		—	$	384	$	133	$	121		—		—		—		—	$	638
Post-mod outstanding principal balance		—	$	384	$	138	$	121		—		—		—		—	$	643
Financial impact due to TDR taken as additional provision		—	$	11		—		—		—		—		—		—	$	11
Number that defaulted during the period		—		1		—		—		—		—		—		—		1
Recorded investment of TDRs that defaulted during the period		—	$	169		—		—		—		—		—		—	$	169
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions		—		—		—		—		—		—		—		—		—

The following table shows certain information regarding TDRs that occurred during the period indicated:     

	TDR Information for the Year Ended December 31, 2017
	RE Mortgage					Home Equity					Other				Construction
(dollars in thousands)	Resid.		Comm.			Lines			Loans		Consum.		C&I		Resid.		Comm.		Total
Number		1		8			3			1		1		11		1		—		26
Pre-mod outstanding principal balance	$	939	$	3,721		$	187		$	252	$	14	$	1,854	$	144		—	$	7,111
Post-mod outstanding principal balance	$	939	$	3,695		$	187		$	252	$	14	$	1,747	$	144		—	$	6,978
Financial impact due to TDR taken as additional provision	$	169	$	(111	)	$	27			—	$	11	$	37		—		—	$	133
Number that defaulted during the period		2		1			1			1		—		—		—		—		5
Recorded investment of TDRs that defaulted during the period	$	223	$	219		$	127		$	55		—		—		—		—	$	624
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions		—		—		$	(5	)		—		—		—		—		—	$	(5	)

Modifications classified as TDRs can include one or a combination of the following: rate modifications, term extensions, interest only modifications, either temporary or long-term, payment modifications, and collateral substitutions/additions.

For all new TDRs, an impairment analysis is conducted. If the loan is determined to be collateral dependent, any additional amount of impairment will be calculated based on the difference between estimated collectible value and the current carrying balance of the loan. This difference could result in an increased provision and is typically charged off. If the asset is determined not to be collateral dependent, the impairment is measured on the net present value difference between the expected cash flows of the restructured loan and the cash flows which would have been received under the original terms. The effect of this could result in a requirement for additional provision to the reserve. The effect of these required provisions for the period are indicated above.

Typically if a TDR defaults during the period, the loan is then considered collateral dependent and, if it was not already considered collateral dependent, an appropriate provision will be reserved or charge will be taken. The additional provisions required resulting from default of previously modified TDR’s are noted above.

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Foreclosed Assets

3 Months Ended

Mar. 31, 2018

Text Block [Abstract]

Foreclosed Assets

Note 6 – Foreclosed Assets

A summary of the activity in the balance of foreclosed assets follows (dollars in thousands):

	Three months ended March 31, 2018			Three months ended March 31, 2017
	Total			Noncovered			Covered			Total
Beginning balance, net	$	3,226		$	3,763		$	223		$	3,986
Additions/transfers from loans		—			85			—			85
Dispositions/sales		(1,572	)		(385	)		(223	)		(608	)
Valuation adjustments		(90	)		66			—			66
Ending balance, net	$	1,564		$	3,529			—		$	3,529
Ending valuation allowance	$	(152	)	$	(300	)		—		$	(300	)
Ending number of foreclosed assets		10			12			—			12
Proceeds from sale of foreclosed assets	$	1,943		$	510		$	216		$	726
Gain (loss) on sale of foreclosed assets	$	371		$	125		$	(7	)	$	118

As of March 31, 2018, $836,000 of foreclosed residential real estate properties, all of which the Company has obtained physical possession of, are included in foreclosed assets. At March 31, 2018, the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are underway is $407,000.

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Premises and Equipment

3 Months Ended

Mar. 31, 2018

Property, Plant and Equipment [Abstract]

Premises and Equipment

Note 7 – Premises and Equipment

Premises and equipment were comprised of:

	March 31, 2018			December 31, 2017
	(In thousands)
Land & land improvements	$	9,959		$	9,959
Buildings		50,792			50,340
Furniture and equipment		37,348			35,939
		98,099			96,238
Less: Accumulated depreciation		(41,678	)		(40,644	)
		56,421			55,594
Construction in progress		2,137			2,148
Total premises and equipment	$	58,558		$	57,742

Depreciation expense for premises and equipment amounted to $1,371,000 and $1,311,000 for the three months ended March 31, 2018 and 2017, respectively.

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Cash Value of Life Insurance

3 Months Ended

Mar. 31, 2018

Investments, All Other Investments [Abstract]

Cash Value of Life Insurance

Note 8 – Cash Value of Life Insurance

A summary of the activity in the balance of cash value of life insurance follows (dollars in thousands):

	Three months ended March 31,
	2018		2017
Beginning balance	$	97,783	$	95,912
Increase in cash value of life insurance		608		685
Gain on death benefit		—		107
Insurance proceeds receivable reclassified to other assets		—		(921	)
Ending balance	$	98,391	$	95,783
End of period death benefit	$	159,640	$	164,574
Number of policies owned		182		183
Insurance companies used		14		14
Current and former employees and directors covered		57		58

As of March 31, 2018, the Bank was the owner and beneficiary of 182 life insurance policies, issued by 14 life insurance companies, covering 57 current and former employees and directors. These life insurance policies are recorded on the Company’s financial statements at their reported cash (surrender) values. As a result of current tax law and the nature of these policies, the Bank records any increase in cash value of these policies as nontaxable noninterest income. If the Bank decided to surrender any of the policies prior to the death of the insured, such surrender may result in a tax expense related to the life-to-date cumulative increase in cash value of the policy. If the Bank retains such policies until the death of the insured, the Bank would receive nontaxable proceeds from the insurance company equal to the death benefit of the policies. The Bank has entered into Joint Beneficiary Agreements (JBAs) with certain of the insured that for certain of the policies provide some level of sharing of the death benefit, less the cash surrender value, among the Bank and the beneficiaries of the insured upon the receipt of death benefits. See Note 15 of these condensed consolidated financial statements for additional information on JBAs.

XML

Goodwill and Other Intangible Assets

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

Note 9 – Goodwill and Other Intangible Assets

The following table summarizes the Company’s goodwill intangible as of the dates indicated:

(in thousands)	March 31, 2018		Additions		Reductions		December 31, 2017
Goodwill	$	64,311		—		—	$	64,311

The following table summarizes the Company’s core deposit intangibles as of the dates indicated:

(in thousands)	March 31, 2018			Additions		Reductions/ Amortization			December 31, 2017
Core deposit intangibles	$	9,558			—		—		$	9,558
Accumulated amortization		(4,723	)		—	$	(339	)		(4,384	)
Core deposit intangibles, net	$	4,835			—	$	(339	)	$	5,174

The Company recorded additions to its CDI of $2,046,000 in conjunction with the acquisition of three branch offices from Bank of America on March 18, 2016, $6,614,000 in conjunction with the North Valley Bancorp acquisition on October 3, 2014, and $898,000 in conjunction with the Citizens acquisition on September 23, 2011. The following table summarizes the Company’s remaining estimated core deposit intangible amortization (in thousands):

Years Ended	Estimated Core Deposit Intangible Amortization
2018	$	1,324
2019		1,228
2020		1,228
2021		969
2022		280
Thereafter		145

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Mortgage Servicing Rights

3 Months Ended

Mar. 31, 2018

Text Block [Abstract]

Mortgage Servicing Rights

Note 10 – Mortgage Servicing Rights

The following tables summarize the activity in, and the main assumptions used to determine the fair value of mortgage servicing rights (“MSRs”) for the periods indicated (dollars in thousands):

	Three months ended March 31,
	2018			2017
Balance at beginning of period	$	6,687		$	6,595
Additions		155			278
Change in fair value		111			(13	)
Balance at end of period	$	6,953		$	6,860
Contractually specified servicing fees, late fees and ancillary fees earned	$	517		$	521
Balance of loans serviced at:
Beginning of period	$	811,065		$	816,623
End of period	$	806,478		$	822,506
Weighted-average prepayment speed (CPR)		7.5	%		8.3	%
Weighted-average discount rate		13.0	%		14.0	%

The changes in fair value of MSRs that occurred during the three months ended March 31, 2018 and 2017 were mainly due to changes in principal balances, changes in mortgage prepayment speeds, and changes in investor required rate of return, or discount rate, of the MSRs.

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Indemnification Asset

3 Months Ended

Mar. 31, 2018

Text Block [Abstract]

Indemnification Asset

Note 11 – Indemnification Asset

A summary of the activity in the balance of indemnification asset follows (in thousands):

	Three months ended March 31,
	2018		2017
Beginning balance		—	$	(744	)
Effect of actual and estimated future covered losses and recoveries		—		(191	)
Reimbursable (revenue) expenses incurred		—		(32	)
Payments made to (received from) FDIC		—		72
Ending balance		—	$	(895	)
Amount of indemnification liability recorded in other assets		—	$	(179	)
Amount of indemnification liability recorded in other liabilities		—		(716	)
Ending balance		—	$	(895	)

On May 9, 2017, the Company and the FDIC terminated their loss sharing agreements. As part of the termination agreement, the Company paid the FDIC $184,000, and recorded a $712,000 gain representing the difference between the Company’s payment to the FDIC and the recorded payable balance on May 9, 2017.

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Other Assets

3 Months Ended

Mar. 31, 2018

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Other Assets

Note 12 – Other Assets

Other assets were comprised of (in thousands):

	March 31, 2018		December 31, 2017
Deferred tax asset, net	$	26,266	$	21,697
Investment in low income housing tax credit funds		17,095		16,854
Prepaid expense		4,411		4,111
Tax refund receivable		4,754		4,754
Capital trusts		1,709		1,706
Software		883		1,126
Life insurance proceeds receivable		—		2,242
Miscellaneous other assets		1,156		2,561
Total other assets	$	56,274	$	55,051

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Deposits

3 Months Ended

Mar. 31, 2018

Banking and Thrift [Abstract]

Deposits

Note 13 – Deposits

A summary of the balances of deposits follows (in thousands):

	March 31, 2018		December 31, 2017
Noninterest-bearing demand	$	1,359,996	$	1,368,218
Interest-bearing demand		1,022,299		971,459
Savings		1,395,481		1,364,518
Time certificates, over $250,000		76,306		73,596
Other time certificates		230,322		231,340
Total deposits	$	4,084,404	$	4,009,131

Certificate of deposit balances of $50,000,000 from the State of California were included in time certificates, $250,000 and over, at each of March 31, 2018 and December 31, 2017. The Bank participates in a deposit program offered by the State of California whereby the State may make deposits at the Bank’s request subject to collateral and credit worthiness constraints. The negotiated rates on these State deposits are generally more favorable than other wholesale funding sources available to the Bank. Overdrawn deposit balances of $1,085,000 and $1,366,000 were classified as consumer loans at March 31, 2018 and December 31, 2017, respectively.

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Reserve for Unfunded Commitments

3 Months Ended

Mar. 31, 2018

Text Block [Abstract]

Reserve for Unfunded Commitments

Note 14 – Reserve for Unfunded Commitments

The following tables summarize the activity in reserve for unfunded commitments for the periods indicated (in thousands):

	Three months ended March 31,
	2018		2017
Balance at beginning of period	$	3,164	$	2,719
Provision for losses – unfunded commitments		700		15
Balance at end of period	$	3,864	$	2,734

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Other Liabilities

3 Months Ended

Mar. 31, 2018

Other Liabilities Disclosure [Abstract]

Other Liabilities

Note 15 – Other Liabilities

Other liabilities were comprised of (in thousands):

	March 31, 2018		December 31, 2017
Pension liability	$	28,686	$	28,472
Low income housing tax credit fund commitments		7,677		8,554
Deferred compensation		6,809		6,605
Taxes payable		5,243		—
Accrued salaries and benefits expense		5,180		6,619
Joint beneficiary agreements		3,429		3,365
Loan escrow and servicing payable		1,464		1,958
Deferred revenue		1,077		1,228
Litigation contingency		—		1,450
Miscellaneous other liabilities		3,964		5,007
Total other liabilities	$	63,529	$	63,258

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Other Borrowings

3 Months Ended

Mar. 31, 2018

Text Block [Abstract]

Other Borrowings

Note 16 – Other Borrowings

A summary of the balances of other borrowings follows:

	March 31, 2018		December 31, 2017
	(in thousands)
FHLB collateralized borrowing, fixed rate, as of March 31, 2018 of 1.87%, payable on April 2, 2018	$	48,000
FHLB collateralized borrowing, fixed rate, as of December 31, 2017 of 1.38%, payable on January 2, 2018			$	104,729
Other collateralized borrowings, fixed rate, as of March 31, 2018 and December 31, 2017 of 0.05%, payable on April 2, 2018 and January 2, 2018, respectively		17,041		17,437
Total other borrowings	$	65,041	$	122,166

The Company did not enter into any repurchase agreements during the three months ended March 31, 2018 or the year ended December 31, 2017.

The Company maintains a collateralized line of credit with the Federal Home Loan Bank of San Francisco. Based on the FHLB stock requirements at March 31, 2018, this line provided for maximum borrowings of $1,597,695,000 of which $48,000,000 was outstanding, leaving $1,549,695,000 available. As of March 31, 2018, the Company has designated investment securities with fair value of $205,777,000 and loans totaling $2,138,150,000 as potential collateral under this collateralized line of credit with the FHLB.

The Company had $17,041,000 and $17,437,000 of other collateralized borrowings at March 31, 2018 and December 31, 2017, respectively. Other collateralized borrowings are generally overnight maturity borrowings from non-financial institutions that are collateralized by securities owned by the Company. As of March 31, 2018, the Company has pledged as collateral and sold under agreements to repurchase investment securities with fair value of $31,667,000 under these other collateralized borrowings.

The Company maintains a collateralized line of credit with the San Francisco Federal Reserve Bank. As of March 31, 2018, this line provided for maximum borrowings of $140,921,000 of which zero was outstanding, leaving $140,921,000 available. As of March 31, 2018, the Company has designated investment securities with fair value of $15,677 and loans totaling $262,663,000 as potential collateral under this collateralized line of credit with the San Francisco Federal Reserve Bank.

The Company had available unused correspondent banking lines of credit from commercial banks totaling $20,000,000 for federal funds transactions at March 31, 2018.

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Junior Subordinated Debt

3 Months Ended

Mar. 31, 2018

Text Block [Abstract]

Junior Subordinated Debt

Note 17 – Junior Subordinated Debt

At March 31, 2018, the Company had five wholly-owned subsidiary business trusts that had issued $62.9 million of trust preferred securities (the “Capital Trusts”). Trust preferred securities accrue and pay distributions periodically at specified annual rates as provided in the indentures. The trusts used the net proceeds from the offering to purchase a like amount of subordinated debentures (the “Debentures”) of the Company. The Debentures are the sole assets of the trusts. The Company’s obligations under the subordinated debentures and related documents, taken together, constitute a full and unconditional guarantee by the Company of the obligations of the trusts. The trust preferred securities are mandatorily redeemable upon the maturity of the Debentures, or upon earlier redemption as provided in the indentures. The Company has the right to redeem the Debentures in whole (but not in part) on or after specific dates, at a redemption price specified in the indentures plus any accrued but unpaid interest to the redemption date. The Company also has a right to defer consecutive payments of interest on the debentures for up to five years.

The Company organized two of the Capital Trusts. The Company acquired its three other Capital Trusts and assumed their related Debentures as a result of its acquisition of North Valley Bancorp. At the acquisition date of October 3, 2014, the Debentures associated with North Valley Bancorp’s three Capital Trusts were recorded on the Company’s books at their fair values of $5,006,000, $3,918,000, and $6,063,000, respectively. The related fair value discounts to face value of these Debentures will be amortized over the remaining time to maturity for each of these Debentures using the effective interest method. Similar, and proportional, discounts were applied to the acquired common stock interests in each of the acquired Capital Trusts and these discounts will be proportionally amortized over the remaining time to maturity for each related debenture.

The recorded book values of the Debentures issued by the Capital Trusts are reflected as junior subordinated debt in the Company’s consolidated balance sheets. The common stock issued by the Capital Trusts and owned by the Company is recorded in other assets in the Company’s consolidated balance sheets. The recorded book value of the debentures issued by the Capital Trusts, less the recorded book value of the common stock of the Capital Trusts owned by the Company, continues to qualify as Tier 1 or Tier 2 capital under interim guidance issued by the Board of Governors of the Federal Reserve System.

The following table summarizes the terms and recorded balance of each subordinated debenture as of the date indicated (dollars in thousands):

Subordinated Debt Series					Coupon Rate			As of March 31, 2018					December 31, 2017
	Maturity		Face		(Variable)			Current			Recorded		Recorded
	Date		Value		3 mo. LIBOR +			Coupon Rate			Book Value		Book Value
TriCo Cap Trust I		10/7/2033	$	20,619		3.05	%		4.77	%	$	20,619	$	20,619
TriCo Cap Trust II		7/23/2034		20,619		2.55	%		4.29	%		20,619		20,619
North Valley Trust II		4/24/2033		6,186		3.25	%		5.02	%		5,145		5,135
North Valley Trust III		4/24/2034		5,155		2.80	%		4.54	%		4,050		4,041
North Valley Trust IV		3/15/2036		10,310		1.33	%		3.45	%		6,472		6,444
			$	62,889							$	56,905	$	56,858

During the three months ended March 31, 2018, the balance of Junior Subordinated Debt increased $47,000 to $56,905,000 due to purchase fair value discount amortization.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 18 – Commitments and Contingencies

Restricted Cash Balances— Reserves (in the form of deposits with the San Francisco Federal Reserve Bank) of $91,860,000 and $82,068,000 were maintained to satisfy Federal regulatory requirements at March 31, 2018 and December 31, 2017. These reserves are included in cash and due from banks in the accompanying consolidated balance sheets.

Lease Commitments— The Company leases 41 sites under non-cancelable operating leases. The leases contain various provisions for increases in rental rates, based either on changes in the published Consumer Price Index or a predetermined escalation schedule. Substantially all of the leases provide the Company with the option to extend the lease term one or more times following expiration of the initial term. The Company currently does not have any capital leases.

At December 31, 2017, future minimum commitments under non-cancelable operating leases with initial or remaining terms of one year or more are as follows:

	Operating Leases
	(in thousands)
2018	$	3,278
2019		2,499
2020		1,847
2021		1,488
2022		757
Thereafter		798
Future minimum lease payments	$	10,667

Rent expense under operating leases was $921,000 and $1,047,000 during the three months ended March 31, 2018 and 2017, respectively. Rent expense was offset by rent income of $10,000 and $13,000 during the three months ended March 31, 2018 and 2017, respectively.

Financial Instruments with Off-Balance-Sheet Risk— The Company is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, standby letters of credit, and deposit account overdraft privilege. Those instruments involve, to varying degrees, elements of risk in excess of the amount recognized in the balance sheet. The contract amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments.

The Company’s exposure to loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit written is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. The Company’s exposure to loss in the event of nonperformance by the other party to the financial instrument for deposit account overdraft privilege is represented by the overdraft privilege amount disclosed to the deposit account holder.

The following table presents a summary of the Company’s commitments and contingent liabilities:

(in thousands)	March 31, 2018		December 31, 2017
Financial instruments whose amounts represent risk:
Commitments to extend credit:
Commercial loans	$	253,001	$	257,220
Consumer loans		437,790		422,958
Real estate mortgage loans		73,618		66,267
Real estate construction loans		236,650		187,097
Standby letters of credit		11,573		13,075
Deposit account overdraft privilege		101,411		98,260

Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates of one year or less or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s credit worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on Management’s credit evaluation of the customer. Collateral held varies, but may include accounts receivable, inventory, property, plant and equipment, residential properties, and income-producing commercial properties.

Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support private borrowing arrangements. Most standby letters of credit are issued for one year or less. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. Collateral requirements vary, but in general follow the requirements for other loan facilities.

Deposit account overdraft privilege amount represents the unused overdraft privilege balance available to the Company’s deposit account holders who have deposit accounts covered by an overdraft privilege. The Company has established an overdraft privilege for certain of its deposit account products whereby all holders of such accounts who bring their accounts to a positive balance at least once every thirty days receive the overdraft privilege. The overdraft privilege allows depositors to overdraft their deposit account up to a predetermined level. The predetermined overdraft limit is set by the Company based on account type.

Legal Proceedings — Neither the Company nor its subsidiaries are a party to any pending legal proceedings that are material, nor is their property the subject of any other material pending legal proceeding at this time. All other legal proceedings are routine and arise out of the ordinary course of the Bank’s business. None of those proceedings are currently expected to have a material adverse impact upon the Company’s and the Bank’s business, their consolidated financial position nor their operations in any material amount not already accrued, after taking into consideration any applicable insurance.

Other Commitments and Contingencies—The Company has entered into employment agreements or change of control agreements with certain officers of the Company providing severance payments and accelerated vesting of benefits under supplemental retirement agreements to the officers in the event of a change in control of the Company and termination for other than cause or after a substantial and material change in the officer’s title, compensation or responsibilities.

The Company owns 13,396 shares of Class B common stock of Visa Inc. which are convertible into Class A common stock at a conversion ratio of 1.648265 per Class B share. As of March 31, 2018, the value of the Class A shares was $119.62 per share. Utilizing the conversion ratio, the value of unredeemed Class A equivalent shares owned by the Bank was $2,641,000 as of March 31, 2018, and has not been reflected in the accompanying financial statements. The shares of Visa Class B common stock are restricted and may not be transferred. Visa Member Banks are required to fund an escrow account to cover settlements, resolution of pending litigation and related claims. If the funds in the escrow account are insufficient to settle all the covered litigation, Visa may sell additional Class A shares, use the proceeds to settle litigation, and further reduce the conversion ratio. If funds remain in the escrow account after all litigation is settled, the Class B conversion ratio will be increased to reflect that surplus.

Mortgage loans sold to investors may be sold with servicing rights retained, with only the standard legal representations and warranties regarding recourse to the Company. Management believes that any liabilities that may result from such recourse provisions are not significant.

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Shareholders' Equity

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Shareholders' Equity

Note 19 – Shareholders’ Equity

Dividends Paid

The Bank paid to the Company cash dividends in the aggregate amounts of $4,372,000 and $4,042,000 during the three months ended March 31, 2018 and 2017, respectively. The Bank is regulated by the Federal Deposit Insurance Corporation (FDIC) and the State of California Department of Business Oversight. Absent approval from the Commissioner of the Department of Business Oversight, California banking laws generally limit the Bank’s ability to pay dividends to the lesser of (1) retained earnings or (2) net income for the last three fiscal years, less cash distributions paid during such period. Under this law, at December 31, 2017, the Bank could have paid dividends of $85,254,000 to the Company without the approval of the Commissioner of the Department of Business Oversight.

Stock Repurchase Plan

On August 21, 2007, the Board of Directors adopted a plan to repurchase, as conditions warrant, up to 500,000 shares of the Company’s common stock on the open market. The timing of purchases and the exact number of shares to be purchased will depend on market conditions. The 500,000 shares authorized for repurchase under this stock repurchase plan represented approximately 3.2% of the Company’s 15,814,662 outstanding common shares as of August 21, 2007. This stock repurchase plan has no expiration date. As of March 31, 2018, the Company had repurchased 166,600 shares under this plan.

Stock Repurchased Under Equity Compensation Plans

During the three months ended March 31, 2018 and 2017, employees tendered 134 and 16,251 shares, respectively, of the Company’s common stock with market value of $4,000, and $604,000, respectively, in lieu of cash to exercise options to purchase shares of the Company’s stock and to pay income taxes related to equity compensation plan instruments as permitted by the Company’s shareholder-approved equity compensation plans. The tendered shares were retired. The market value of tendered shares is the last market trade price at closing on the day an option is exercised. Stock repurchased under equity incentive plans are not included in the total of stock repurchased under the stock repurchase plan announced on August 21, 2007.

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Stock Options and Other Equity-Based Incentive Instruments

3 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Options and Other Equity-Based Incentive Instruments

Note 20 – Stock Options and Other Equity-Based Incentive Instruments

In March 2009, the Company’s Board of Directors adopted the TriCo Bancshares 2009 Equity Incentive Plan (2009 Plan) covering officers, employees, directors of, and consultants to, the Company. The 2009 Plan was approved by the Company’s shareholders in May 2009. The 2009 Plan allows for the granting of the following types of “stock awards” (Awards): incentive stock options, nonstatutory stock options, performance awards, restricted stock, restricted stock unit (RSU) awards and stock appreciation rights. RSUs that vest based solely on the grantee remaining in the service of the Company for a certain amount of time, are referred to as “service condition vesting RSUs”. RSUs that vest based on the grantee remaining in the service of the Company for a certain amount of time and a market condition such as the total return of the Company’s common stock versus the total return of an index of bank stocks, are referred to as “market plus service condition vesting RSUs”. In May 2013, the Company’s shareholders approved an amendment to the 2009 Plan increasing the maximum aggregate number of shares of TriCo’s common stock which may be issued pursuant to or subject to Awards from 650,000 to 1,650,000. The number of shares available for issuance under the 2009 Plan is reduced by: (i) one share for each share of common stock issued pursuant to a stock option or a Stock Appreciation Right and (ii) two shares for each share of common stock issued pursuant to a Performance Award, a Restricted Stock Award or a Restricted Stock Unit Award. When Awards made under the 2009 Plan expire or are forfeited or cancelled, the underlying shares will become available for future Awards under the 2009 Plan. To the extent that a share of common stock pursuant to an Award that counted as two shares against the number of shares again becomes available for issuance under the 2009 Plan, the number of shares of common stock available for issuance under the 2009 Plan shall increase by two shares. Shares awarded and delivered under the 2009 Plan may be authorized but unissued, or reacquired shares. As of March 31, 2018, 446,400 options for the purchase of common shares, and 121,102 restricted stock units were outstanding, and 526,418 shares remain available for issuance, under the 2009 Plan.

In May 2001, the Company adopted the TriCo Bancshares 2001 Stock Option Plan (2001 Plan) covering officers, employees, directors of, and consultants to, the Company. Under the 2001 Plan, the option exercise price cannot be less than the fair market value of the Common Stock at the date of grant except in the case of substitute options. Options for the 2001 Plan expire on the tenth anniversary of the grant date.

Vesting schedules under the 2001 Plan are determined individually for each grant. As of March 31, 2018, 34,500 options for the purchase of common shares were outstanding under the 2001 Plan. As of May 2009, as a result of the shareholder approval of the 2009 Plan, no new options may be granted under the 2001 Plan.

Stock option activity during the three months ended March 31, 2018 is summarized in the following table:

	Number of Shares		Option Price per Share		Weighted Average Exercise Price		Value on Date of Grant	Weighted Average Fair Value
Outstanding at December 31, 2017		446,400	$	12.63 to $23.21	$	16.84
Options granted		—		— to —		—
Options exercised		—		— to —		—
Options forfeited		—		— to —		—
Outstanding at March 31, 2018		446,400	$	12.63 to $23.21	$	16.84

The following table shows the number, weighted-average exercise price, intrinsic value, and weighted average remaining contractual life of options exercisable, options not yet exercisable and total options outstanding as of March 31, 2018:

	Currently		Currently Not		Total
	Exercisable		Exercisable		Outstanding
Number of options		423,600		22,800		446,400
Weighted average exercise price	$	16.65	$	20.45	$	16.84
Intrinsic value (in thousands)	$	8,713	$	382	$	9,096
Weighted average remaining contractual term (yrs.)		3.6		5.5		3.7

The 22,800 options that are currently not exercisable as of March 31, 2018 are expected to vest, on a weighted-average basis, over the next 6 months, and the Company is expected to recognize $61,000 of pre-tax compensation costs related to these options as they vest. The Company did not modify any option grants during 2017 or the three months ended March 31, 2018.

Restricted stock unit (RSU) activity is summarized in the following table for the dates indicated:

	Service Condition Vesting RSUs				Market Plus Service Condition Vesting RSUs
	Number of RSUs			Weighted Average Fair Value on Date of Grant	Number of RSUs		Weighted Average Fair Value on Date of Grant
Outstanding at December 31, 2017		68,457				52,829
RSUs granted		—				—
RSUs added through dividend credits		310				—
RSUs released		(494	)			—
RSUs forfeited/expired		—				—
Outstanding at March 31, 2018		68,273				52,829

The 68,273 of service condition vesting RSUs outstanding as of March 31, 2018 include a feature whereby each RSU outstanding is credited with a dividend amount equal to any common stock cash dividend declared and paid, and the credited amount is divided by the closing price of the Company’s stock on the dividend payable date to arrive at an additional amount of RSUs outstanding under the original grant. The 68,273 of service condition vesting RSUs outstanding as of March 31, 2018 are expected to vest, and be released, on a weighted-average basis, over the next 1.0 year. The Company expects to recognize $1,211,000 of pre-tax compensation costs related to these service condition vesting RSUs between March 31, 2018 and their vesting dates. The Company did not modify any service condition vesting RSUs during 2017 or the three months ended March 31, 2018.

The 52,829 of market plus service condition vesting RSUs outstanding as of March 31, 2018 are expected to vest, and be released, on a weighted-average basis, over the next 1.2 years. The Company expects to recognize $608,000 of pre-tax compensation costs related to these RSUs between March 31, 2018 and their vesting dates. As of March 31, 2018, the number of market plus service condition vesting RSUs outstanding that will actually vest, and be released, may be reduced to zero or increased to 79,244 depending on the total return of the Company’s common stock versus the total return of an index of bank stocks from the grant date to the vesting date. The Company did not modify any market plus service condition vesting RSUs during 2017 or the three months ended March 31, 2018.

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Noninterest Income and Expense

3 Months Ended

Mar. 31, 2018

Other Income and Expenses [Abstract]

Noninterest Income and Expense

Note 21 – Noninterest Income and Expense

The components of other noninterest income were as follows (in thousands):

	Three months ended March 31,
	2018			2017
Service charges on deposit accounts	$	3,779		$	3,619
ATM and interchange fees		4,235			4,015
Other service fees		714			765
Mortgage banking service fees		517			521
Change in value of mortgage servicing rights		111			(13	)
Total service charges and fees		9,356			8,907
Commissions on sale of non-deposit investment products		876			607
Gain on sale of loans		626			910
Increase in cash value of life insurance		608			685
Gain on sale of foreclosed assets		371			118
Lease brokerage income		128			206
Sale of customer checks		101			104
Change in indemnification asset		—			(221	)
Life insurance proceeds in excess of cash value		—			107
Loss on disposal of fixed assets		(13	)		—
Loss on marketable equity securities		(47	)		—
Other		284			280
Total other noninterest income		2,934			2,796
Total noninterest income	$	12,290		$	11,703

Mortgage loan servicing fees, net of change in fair value of mortgage loan servicing rights, totaling $628,000 and $508,000 were recorded in service charges and fees noninterest income for the three months ended March 31, 2018 and 2017, respectively.

The components of noninterest expense were as follows (in thousands):

	Three months ended March 31,
	2018		2017
Base salaries, net of deferred loan origination costs	$	13,962	$	13,390
Incentive compensation		2,452		2,198
Benefits and other compensation costs		5,238		5,305
Total salaries and benefits expense		21,652		20,893
Occupancy		2,681		2,692
Data processing and software		2,514		2,396
Equipment		1,551		1,723
ATM and POS network charges		1,226		853
Advertising		838		967
Professional fees		773		766
Telecommunications		701		643
Change in reserve for unfunded commitments		700		15
Merger and acquisition expense		476		—
Assessments		430		405
Postage		358		404
Intangible amortization		339		359
Operational losses		294		435
Courier service		267		254
Provision for (reversal of) foreclosed asset losses		90		(66	)
Foreclosed assets expense		24		38
Other miscellaneous expense		3,248		3,045
Total other noninterest expense		16,510		14,929
Total noninterest expense	$	38,162	$	35,822
Merger and acquisition expense:
Professional fees	$	355		—
Advertising and marketing		8		—
Other miscellaneous expense		112		—
Total merger and acquisition expense	$	476		—

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Income Taxes

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Note 22 – Income Taxes

The provisions for income taxes applicable to income before taxes differ from amounts computed by applying the statutory Federal income tax rates to income before taxes. The effective tax rate and the statutory federal income tax rate are reconciled for the periods indicated as follows:

	Three months ended March 31,
	2018			2017
Federal statutory income tax rate		21.0	%		35.0	%
State income taxes, net of federal tax benefit		9.0			6.9
Tax-exempt interest on municipal obligations		(1.1	)		(1.9	)
Increase in cash value of insurance policies		(0.7	)		(1.4	)
Low income housing tax credits		(1.0	)		(0.6	)
Equity compensation		—			(0.5	)
Nondeductible merger expenses		0.4			—
Nondeductible joint beneficiary agreement expense		0.1			0.1
Other		0.4			0.2
Effective Tax Rate		28.1	%		37.8	%

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Earnings Per Share

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Earnings Per Share

Note 23 – Earnings Per Share

Basic earnings per share represent income available to common shareholders divided by the weighted-average number of common shares outstanding during the period. Diluted earnings per share reflect additional common shares that would have been outstanding if dilutive potential common shares had been issued, as well as any adjustments to income that would result from assumed issuance. Potential common shares that may be issued by the Company relate solely from outstanding stock options, and are determined using the treasury stock method. Earnings per share have been computed based on the following:

	Three months ended March 31,
(in thousands)	2018		2017
Net income	$	13,910	$	12,079
Average number of common shares outstanding		22,956		22,870
Effect of dilutive stock options and restricted stock		327		362
Average number of common shares outstanding used to calculate diluted earnings per share		23,283		23,232
Options excluded from diluted earnings per share because the effect of these options was antidilutive		—		—

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Comprehensive Income

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Comprehensive Income

Note 24 – Comprehensive Income

Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income. Although certain changes in assets and liabilities, such as unrealized gains and losses on available-for-sale securities, are reported as a separate component of the equity section of the balance sheet, such items, along with net income, are components of comprehensive income. The components of other comprehensive income and related tax effects are as follows:

	Three months ended March 31,
(in thousands)	2018			2017
Unrealized holding gains (losses) on available for sale securities before reclassifications	$	(15,265	)	$	787
Amounts reclassified out of accumulated other comprehensive income:
Adoption ASU 2016-01		62			—
Adoption ASU 2018-02		(425	)		—
Total amounts reclassified out of accumulated other comprehensive income		(363	)		—
Unrealized holding gains (losses) on available for sale securities after reclassifications		(15,628	)		787
Tax effect		4,602			(330	)
Unrealized holding gains (losses) on available for sale securities, net of tax		(11,026	)		457
Change in unfunded status of the supplemental retirement plans before reclassifications		667			—
Amounts reclassified out of accumulated other comprehensive income:
Amortization of prior service cost		(13	)		(3	)
Amortization of actuarial losses		127			96
Adoption ASU 2018-02		(668	)		—
Total amounts reclassified out of accumulated other comprehensive income		(554	)		93
Change in unfunded status of the supplemental retirement plans after reclassifications		113			93
Tax effect		(33	)		(39	)
Change in unfunded status of the supplemental retirement plans, net of tax		80			54
Change in joint beneficiary agreement liability before reclassifications		—			—
Amounts reclassified out of accumulated other comprehensive income		—			—
Change in joint beneficiary agreement liability after reclassifications		—			—
Tax effect		—			—
Change in joint beneficiary agreement liability, net of tax		—			—
Total other comprehensive income (loss)	$	(10,946	)	$	511

The components of accumulated other comprehensive income, included in shareholders’ equity, are as follows:

	Three months ended March 31,
(in thousands)	2018			2017
Net unrealized loss on available for sale securities	$	(18,975	)	$	(8,083	)
Tax effect		5,610			3,399
Unrealized holding loss on available for sale securities, net of tax		(13,365	)		(4,684	)
Unfunded status of the supplemental retirement plans		(5,238	)		(4,621	)
Tax effect		1,549			1,943
Unfunded status of the supplemental retirement plans, net of tax		(3,689	)		(2,678	)
Joint beneficiary agreement liability		(151	)		(40	)
Tax effect		—			—
Joint beneficiary agreement liability, net of tax		(151	)		(40	)
Accumulated other comprehensive loss	$	(17,205	)	$	(7,402	)

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Retirement Plans

3 Months Ended

Mar. 31, 2018

Retirement Benefits [Abstract]

Retirement Plans

Note 25 - Retirement Plans

401(k) Plan

The Company sponsors a 401(k) Plan that allows participants to contribute a portion of their compensation subject to certain limits based on federal tax laws. Prior to July 1, 2015, the Company did not contribute to the 401(k) Plan. Effective July 1, 2015, the Company initiated a discretionary matching contribution equal to 50% of participant’s elective deferrals each quarter, up to 4% of eligible compensation. The Company recorded $203,000, and $186,000 of salaries & benefits expense attributable to the 401(k) Plan matching contributions during the three months ended March 31, 2018 and 2017, respectively. The Company made contributions to the 401(k) Plan of $199,000 and $179,000 during the three months ended March 31, 2018 and 2017, respectively.

Employee Stock Ownership Plan

Substantially all employees with at least one year of service are covered by a discretionary employee stock ownership plan (ESOP). Contributions are made to the plan at the discretion of the Board of Directors. Contributions to the plan totaling $465,000 and $525,000 during the three months ended March 31, 2018 and 2017, respectively, are included in salary expense. Company shares owned by the ESOP are paid dividends and included in the calculation of earnings per share exactly as other common shares outstanding.

Deferred Compensation Plans

The Company has deferred compensation plans for certain directors and key executives, which allow certain directors and key executives designated by the Board of Directors of the Company to defer a portion of their compensation. The Company has purchased insurance on the lives of the participants and intends to hold these policies until death as a cost recovery of the Company’s deferred compensation obligations of $6,809,000 and $6,605,000 at March 31, 2018 and December 31, 2017, respectively.    Earnings credits on deferred balances totaling $124,000 and $145,000 during the three months ended March 31, 2018 and 2017, respectively, are included in noninterest expense.

Supplemental Retirement Plans

The Company has supplemental retirement plans for current and former directors and key executives. These plans are non-qualified defined benefit plans and are unsecured and unfunded. The Company has purchased insurance on the lives of the participants and intends (but is not required) to use the cash values of these policies to pay the retirement obligations. The following table sets forth the net periodic benefit cost recognized for the plans:

	Three months ended March 31,
	2018			2017
(in thousands)
Net pension cost included the following components:
Service cost-benefits earned during the period	$	243		$	235
Interest cost on projected benefit obligation		237			249
Amortization of net obligation at transition		1			1
Amortization of prior service cost		(13	)		(3	)
Recognized net actuarial loss		127			96
Net periodic pension cost	$	595		$	578

During the three months ended March 31, 2018 and 2017, the Company contributed and paid out as benefits $267,000 and $259,000, respectively, to participants under the plans. For the year ending December 31, 2018, the Company expects to contribute and pay out as benefits $1,106,000 to participants under the plans.

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Related Party Transactions

3 Months Ended

Mar. 31, 2018

Related Party Transactions [Abstract]

Related Party Transactions

Note 26 - Related Party Transactions

Certain directors, officers, and companies with which they are associated were customers of, and had banking transactions with, the Company or the Bank in the ordinary course of business.

The following table summarizes the activity in these loans for periods indicated (in thousands):

Balance December 31, 2016	$	2,432
Advances/new loans		437
Removed/payments		(721	)
Balance December 31, 2017		2,148
Advances/new loans		145
Removed/payments		(314	)
Balance March 31, 2018	$	1,979

Deposits of directors, officers and other related parties to the Bank totaled $30,871,000 and $46,025,000 at March 31, 2018 and December 31, 2017, respectively.

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Fair Value Measurement

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurement

Note 27 - Fair Value Measurement

The Company utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. In estimating fair value, the Company utilizes valuation techniques that are consistent with the market approach, income approach, and/or the cost approach. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability including assumptions about the risk inherent in a particular valuation technique, the effect of a restriction on the sale or use of an asset and the risk of nonperformance. Securities available-for-sale and mortgage servicing rights are recorded at fair value on a recurring basis. Additionally, from time to time, the Company may be required to record at fair value other assets on a nonrecurring basis, such as loans held for sale, loans held for investment and certain other assets. These nonrecurring fair value adjustments typically involve application of lower of cost or market accounting or impairment write-downs of individual assets.

The Company groups assets and liabilities at fair value in three levels, based on the markets in which the assets and liabilities are traded and the observable nature of the assumptions used to determine fair value. These levels are:

Level 1 -	Valuation is based upon quoted prices for identical instruments traded in active markets.
Level 2 -	Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market.
Level 3 -	Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques.

Securities available for sale - Securities available for sale are recorded at fair value on a recurring basis. Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and money market funds. Level 2 securities include mortgage-backed securities issued by government sponsored entities, municipal bonds and corporate debt securities. The Company had no securities classified as Level 3 during any of the periods covered in these financial statements.

Loans held for sale - Loans held for sale are carried at the lower of cost or fair value. The fair value of loans held for sale is based on what secondary markets are currently offering for loans with similar characteristics. As such, we classify those loans subjected to nonrecurring fair value adjustments as Level 2.

Impaired originated and PNCI loans - Originated and PNCI loans are not recorded at fair value on a recurring basis. However, from time to time, an originated or PNCI loan is considered impaired and an allowance for loan losses is established. Originated and PNCI loans for which it is probable that payment of interest and principal will not be made in accordance with the original contractual terms of the loan agreement are considered impaired. The fair value of an impaired originated or PNCI loan is estimated using one of several methods, including collateral value, fair value of similar debt, enterprise value, liquidation value and discounted cash flows. Those impaired originated and PNCI loans not requiring an allowance represent loans for which the fair value of the expected repayments or collateral exceed the recorded investments in such loans. Impaired originated and PNCI loans where an allowance is established based on the fair value of collateral require classification in the fair value hierarchy. When the fair value of the collateral is based on an observable market price or a current appraised value which uses substantially observable data, the Company records the impaired originated or PNCI loan as nonrecurring Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value, or the appraised value contains a significant unobservable assumption, such as deviations from comparable sales, and there is no observable market price, the Company records the impaired originated or PNCI loan as nonrecurring Level 3.

Foreclosed assets - Foreclosed assets include assets acquired through, or in lieu of, loan foreclosure.    Foreclosed assets are held for sale and are initially recorded at fair value at the date of foreclosure, establishing a new cost basis. Subsequent to foreclosure, management periodically performs valuations and the assets are carried at the lower of carrying amount or fair value less cost to sell. When the fair value of foreclosed assets is based on an observable market price or a current appraised value which uses substantially observable data, the Company records the foreclosed asset as nonrecurring Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value, or the appraised value contains a significant unobservable assumption, such as deviations from comparable sales, and there is no observable market price, the Company records the foreclosed asset as nonrecurring Level 3. Revenue and expenses from operations and changes in the valuation allowance are included in other noninterest expense.

Mortgage servicing rights - Mortgage servicing rights are carried at fair value. A valuation model, which utilizes a discounted cash flow analysis using a discount rate and prepayment speed assumptions is used in the computation of the fair value measurement. While the prepayment speed assumption is currently quoted for comparable instruments, the discount rate assumption currently requires a significant degree of management judgment and is therefore considered an unobservable input. As such, the Company classifies mortgage servicing rights subjected to recurring fair value adjustments as Level 3. Additional information regarding mortgage servicing rights can be found in Note 10 in the consolidated financial statements at Item 1 of this report.

The table below presents the recorded amount of assets and liabilities measured at fair value on a recurring basis (in thousands):

Fair value at March 31, 2018	Total		Level 1		Level 2		Level 3
Marketable equity securities	$	2,890	$	2,890	$	—	$	—
Debt securities available for sale:
Obligations of U.S. government corporations and agencies		616,657		—		616,657		—
Obligations of states and political subdivisions		119,238		—		119,238		—
Mortgage servicing rights		6,953		—		—		6,953
Total assets measured at fair value	$	745,738	$	2,890	$	735,895	$	6,953
Fair value at December 31, 2017	Total		Level 1		Level 2		Level 3
Marketable equity securities	$	2,938	$	2,938	$	—	$	—
Debt securities available for sale:
Obligations of U.S. government corporations and agencies		604,789		—		604,789		—
Obligations of states and political subdivisions		123,156		—		123,156		—
Mortgage servicing rights		6,687		—		—		6,687
Total assets measured at fair value	$	737,570	$	2,938	$	727,945	$	6,687

Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally corresponds with the Company’s quarterly valuation process. There were no transfers between any levels during the three months ended March 31, 2018 or the year ended December 31, 2017.

The following table provides a reconciliation of assets and liabilities measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the time periods indicated. Had there been any transfer into or out of Level 3 during the time periods indicated, the amount included in the “Transfers into (out of) Level 3” column would represent the beginning balance of an item in the period (interim quarter) during which it was transferred (in thousands):

Three months ended March 31,	Beginning Balance		Transfers into (out of) Level 3		Change Included in Earnings			Issuances		Ending Balance
2018: Mortgage servicing rights	$	6,687		—	$	111		$	155	$	6,953
2017: Mortgage servicing rights	$	6,595		—	$	(13	)	$	278	$	6,860

The Company’s method for determining the fair value of mortgage servicing rights is described in Note 1. The key unobservable inputs used in determining the fair value of mortgage servicing rights are mortgage prepayment speeds and the discount rate used to discount cash projected cash flows. Generally, any significant increases in the mortgage prepayment speed and discount rate utilized in the fair value measurement of the mortgage servicing rights will result in a negative fair value adjustments (and decrease in the fair value measurement). Conversely, a decrease in the mortgage prepayment speed and discount rate will result in a positive fair value adjustment (and increase in the fair value measurement). Note 10 contains additional information regarding mortgage servicing rights.

The following table presents quantitative information about recurring Level 3 fair value measurements at March 31, 2018:

	Fair Value (in thousands)		Valuation Technique	Unobservable Inputs	Range, Weighted Average
Mortgage Servicing Rights	$	6,953	Discounted cash flow	Constant prepayment rate		6.0%-19.7%, 7.5	%
				Discount rate		11.0%-15.0%, 13.0%

The following table presents quantitative information about recurring Level 3 fair value measurements at December 31, 2017:

	Fair Value (in thousands)		Valuation Technique	Unobservable Inputs	Range, Weighted Average
Mortgage Servicing Rights	$	6,687	Discounted cash flow	Constant prepayment rate		6.2%-22.0%, 8.9	%
				Discount rate		13.0%-15.0%, 13.0%

The tables below present the recorded investment in assets and liabilities measured at fair value on a nonrecurring basis, as of the dates indicated (in thousands):

Three months ended March 31, 2018	Total		Level 1		Level 2		Level 3		Total Gains (Losses)
Fair value:
Impaired Originated & PNCI loans	$	2,103		—		—	$	2,103	$	(795	)
Foreclosed assets		774		—		—		774		(87	)
Total assets measured at fair value	$	2,877		—		—	$	2,877	$	(882	)
Year ended December 31, 2017	Total		Level 1		Level 2		Level 3		Total Gains (Losses)
Fair value:
Impaired Originated & PNCI loans	$	2,767		—		—	$	2,767	$	(1,452	)
Foreclosed assets		2,217		—		—		2,217		(135	)
Total assets measured at fair value	$	4,984		—		—	$	4,984	$	(1,587	)
Three months ended March 31, 2017	Total		Level 1		Level 2		Level 3		Total Gains (Losses)
Fair value:
Impaired Originated & PNCI loans	$	824		—		—	$	824	$	30
Foreclosed assets		1,528		—		—		1,528		(22	)
Total assets measured at fair value	$	2,352		—		—	$	2,352	$	8

The impaired Originated and PNCI loan amount above represents impaired, collateral dependent loans that have been adjusted to fair value. When we identify a collateral dependent loan as impaired, we measure the impairment using the current fair value of the collateral, less selling costs. Depending on the characteristics of a loan, the fair value of collateral is generally estimated by obtaining external appraisals. If we determine that the value of the impaired loan is less than the recorded investment in the loan, we recognize this impairment and adjust the carrying value of the loan to fair value through the allowance for loan and lease losses. The loss represents charge-offs or impairments on collateral dependent loans for fair value adjustments based on the fair value of collateral. The carrying value of loans fully charged-off is zero.

The foreclosed assets amount above represents impaired real estate that has been adjusted to fair value. Foreclosed assets represent real estate which the Company has taken control of in partial or full satisfaction of loans. At the time of foreclosure, other real estate owned is recorded at fair value less costs to sell, which becomes the property’s new basis. Any write-downs based on the asset’s fair value at the date of acquisition are charged to the allowance for loan and lease losses. After foreclosure, management periodically performs valuations such that the real estate is carried at the lower of its new cost basis or fair value, net of estimated costs to sell. Fair value adjustments on other real estate owned are recognized within net loss on real estate owned. The loss represents impairments on non-covered other real estate owned for fair value adjustments based on the fair value of the real estate.

The Company’s property appraisals are primarily based on the sales comparison approach and income approach methodologies, which consider recent sales of comparable properties, including their income generating characteristics, and then make adjustments to reflect the general assumptions that a market participant would make when analyzing the property for purchase. These adjustments may increase or decrease an appraised value and can vary significantly depending on the location, physical characteristics and income producing potential of each property. Additionally, the quality and volume of market information available at the time of the appraisal can vary from period to period and cause significant changes to the nature and magnitude of comparable sale adjustments. Given these variations, comparable sale adjustments are generally not a reliable indicator for how fair value will increase or decrease from period to period. Under certain circumstances, management discounts are applied based on specific characteristics of an individual property.

The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at March 31, 2018:

March 31, 2018	Fair Value (in thousands)		Valuation Technique	Unobservable Inputs	Range, Weighted Average
Impaired Originated & PNCI loans	$	2,103	Sales comparison approach Income approach	Adjustment for differences between comparable sales Capitalization rate	Not meaningful N/A
Foreclosed assets (Land & construction)	$	190	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful
Foreclosed assets (Residential real estate)	$	492	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful
Foreclosed assets (Commercial real estate)	$	92	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful

The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at December 31, 2017:

December 31, 2017	Fair Value (in thousands)		Valuation Technique	Unobservable Inputs	Range, Weighted Average
Impaired Originated & PNCI loans	$	2,767	Sales comparison approach Income approach	Adjustment for differences between comparable sales Capitalization rate	Not meaningful N/A
Foreclosed assets (Land & construction)	$	1,341	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful
Foreclosed assets (Residential real estate)	$	622	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful
Foreclosed assets (Commercial real estate)	$	254	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful

Fair values for financial instruments are management’s estimates of the values at which the instruments could be exchanged in a transaction between willing parties. These estimates are subjective and may vary significantly from amounts that would be realized in actual transactions. In addition, other significant assets are not considered financial assets including, any mortgage banking operations, deferred tax assets, and premises and equipment. Further, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on the fair value estimates and have not been considered in any of these estimates.

In January 2018, the Company adopted the provisions of Accounting Standard Update 2016-01 “Recognition and Measurement of Financial Assets and Financial Liabilities”, which requires the Company to use the exit price notion when measuring the fair value of financial instruments. The Company used the exit price notion for valuing financial instruments in 2018 and the entry price notion for valuing financial instruments in 2017. The estimated fair values of financial instruments that are reported at amortized cost in the Company’s consolidated balance sheets, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value, were as follows (in thousands):

	March 31, 2018				December 31, 2017
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial assets:
Level 1 inputs:
Cash and due from banks	$	87,138	$	87,138	$	105,968	$	105,968
Cash at Federal Reserve and other banks		95,841		95,841		99,460		99,460
Level 2 inputs:
Securities held to maturity		496,035		488,639		514,844		518,165
Restricted equity securities		16,956		N/A		16,956		N/A
Loans held for sale		2,149		2,149		4,616		4,616
Level 3 inputs:
Loans, net		3,039,760		3,025,636		2,984,842		2,992,225
Financial liabilities:
Level 2 inputs:
Deposits		4,084,404		4,081,089		4,009,131		4,006,620
Other borrowings		65,041		65,041		122,166		122,166
Level 3 inputs:
Junior subordinated debt		56,905		59,982		56,858		58,466
	Contract Amount		Fair Value		Contract Amount		Fair Value
Off-balance sheet:
Level 3 inputs:
Commitments	$	1,001,059	$	10,011	$	933,542	$	9,335
Standby letters of credit		11,573		116		13,075		131
Overdraft privilege commitments		101,411		1,014		98,260		983

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TriCo Bancshares Condensed Financial Statements (Parent Only)

3 Months Ended

Mar. 31, 2018

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

TriCo Bancshares Condensed Financial Statements (Parent Only)

Note 28—TriCo Bancshares Condensed Financial Statements (Parent Only)

Condensed Balance Sheets

	March 31, 2018			December 31, 2017
	(In thousands)
Assets
Cash and cash equivalents	$	3,516		$	3,924
Investment in Tri Counties Bank		557,380			557,538
Other assets		1,758			1,721
Total assets	$	562,654		$	563,183
Liabilities and shareholders’ equity
Other liabilities	$	493		$	517
Junior subordinated debt		56,905			56,858
Total liabilities		57,398			57,375
Shareholders’ equity:
Preferred stock, no par value: 1,000,000 shares authorized, zero issued and outstanding at March 31, 2018 and December 31, 2017		—			—
Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 22,956,323 and 22,955,963 shares, respectively		256,226			255,836
Retained earnings		266,235			255,200
Accumulated other comprehensive loss, net		(17,205	)		(5,228	)
Total shareholders’ equity		505,256			505,808
Total liabilities and shareholders’ equity	$	562,654		$	563,183
Condensed Statements of Income
	Three months ended March 31,
	2018			2017
	(In thousands)
Interest expense	$	(697	)	$	(595	)
Administration expense		(426	)		(159	)
Loss before equity in net income of Tri Counties Bank		(1,123	)		(754	)
Equity in net income of Tri Counties Bank:
Distributed		4,372			4,042
Undistributed		10,397			8,474
Income tax benefit		264			317
Net income	$	13,910		$	12,079
Condensed Statements of Comprehensive Income
	Three months ended March 31,
	2018			2017
	(In thousands)
Net income	$	13,910		$	12,079
Other comprehensive income (loss), net of tax:
Increase (decrease) in unrealized gains on available for sale securities arising during the period		(11,026	)		457
Change in minimum pension liability		80			54
Other comprehensive income (loss)		(10,946	)		511
Comprehensive income	$	2,964		$	12,590

Condensed Statements of Cash Flows

	Three months ended March 31,
	2018			2017
	(In thousands)
Operating activities:
Net income	$	13,910		$	12,079
Adjustments to reconcile net income to net cash provided by operating activities:
Undistributed equity in earnings of Tri Counties Bank		(10,397	)		(8,474	)
Equity compensation vesting expense		391			381
Stock option excess tax benefits					—
Net change in other assets and liabilities		(405	)		(348	)
Net cash provided by operating activities		3,499			3,638
Investing activities: None
Financing activities:
Repurchase of common stock		(4	)		(169	)
Cash dividends paid — common		(3,903	)		(3,431	)
Net cash used for financing activities		(3,907	)		(3,600	)
Net change in cash and cash equivalents		(408	)		38
Cash and cash equivalents at beginning of year		3,924			2,802
Cash and cash equivalents at end of year	$	3,516		$	2,840

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Regulatory Matters

3 Months Ended

Mar. 31, 2018

Banking and Thrift [Abstract]

Regulatory Matters

Note 29 - Regulatory Matters

The Company is subject to various regulatory capital requirements administered by federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company must meet specific capital guidelines that involve quantitative measures of the Company’s assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting practices. The Company’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors.

Quantitative measures established by regulation to ensure capital adequacy require the Company to maintain minimum amounts and ratios (set forth in the table below) of total, Tier 1, and common equity Tier 1capital to risk-weighted assets, and of Tier 1 capital to average assets.

The following tables present actual and required capital ratios as of March 31, 2018 and December 31, 2017 for the Company and the Bank under Basel III Capital Rules. The minimum capital amounts presented include the minimum required capital levels as of March 31, 2018 (1.875%) and December 31, 2017 (1.25%) based on the then phased-in provisions of the Basel III Capital Rules and the minimum required capital levels as of January 1, 2019 when the Basel III Capital Rules have been fully phased-in. Capital levels required to be considered well capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules.

						Minimum Capital					Minimum Capital					Required to be
						Required – Basel III					Required – Basel III					Considered Well
	Actual					Phase-in Schedule					Fully Phased In					Capitalized
	Amount		Ratio			Amount		Ratio			Amount		Ratio			Amount		Ratio
	(dollars in thousands)
As of March 31, 2018:
Total Capital
(to Risk Weighted Assets):
Consolidated		$539,966		13.91	%	$	383,434		9.875	%	$	407,702		10.50	%		N/A		N/A
Tri Counties Bank		$536,894		13.83	%	$	383,261		9.875	%	$	407,518		10.50	%	$	388,112		10.00	%
Tier 1 Capital
(to Risk Weighted Assets):
Consolidated		$506,129		13.03	%	$	305,777		7.875	%	$	330,045		8.50	%		N/A		N/A
Tri Counties Bank		$503,057		12.96	%	$	305,638		7.875	%	$	329,895		8.50	%	$	310,490		8.00	%
Common equity Tier 1 Capital
(to Risk Weighted Assets):
Consolidated		$450,933		11.61	%	$	247,534		6.375	%	$	271,802		7.00	%		N/A		N/A
Tri Counties Bank		$503,057		12.96	%	$	247,421		6.375	%	$	271,678		7.00	%	$	252,273		6.50	%
Tier 1 Capital (to Average Assets):
Consolidated		$506,129		10.84	%	$	186,720		4.000	%	$	186,720		4.00	%		N/A		N/A
Tri Counties Bank		$503,057		10.78	%	$	186,716		4.000	%	$	186,716		4.00	%	$	233,395		5.00	%

	Actual					Minimum Capital Required – Basel III Phase-in Schedule					Minimum Capital Required – Basel III Fully Phased In					Required to be Considered Well Capitalized
	Amount		Ratio			Amount		Ratio			Amount		Ratio			Amount		Ratio
	(dollars in thousands)
As of December 31, 2017:
Total Capital
(to Risk Weighted Assets):
Consolidated	$	528,805		14.07	%	$	347,694		9.25	%	$	394,679		10.50	%		N/A		N/A
Tri Counties Bank	$	525,384		13.98	%	$	347,535		9.25	%	$	394,499		10.50	%	$	375,713		10.00	%
Tier 1 Capital
(to Risk Weighted Assets):
Consolidated	$	495,318		13.18	%	$	272,517		7.25	%	$	319,502		8.50	%		N/A		N/A
Tri Counties Bank	$	491,897		13.09	%	$	272,392		7.25	%	$	319,356		8.50	%	$	300,570		8.00	%
Common equity Tier 1 Capital
(to Risk Weighted Assets):
Consolidated	$	440,643		11.72	%	$	216,134		5.75	%	$	263,120		7.00	%		N/A		N/A
Tri Counties Bank	$	491,897		13.09	%	$	216,035		5.75	%	$	262,999		7.00	%	$	244,214		6.50	%
Tier 1 Capital (to Average Assets):
Consolidated	$	495,318		10.80	%	$	183,400		4.00	%	$	183,400		4.00	%		N/A		N/A
Tri Counties Bank	$	491,897		10.73	%	$	183,394		4.00	%	$	183,394		4.00	%	$	229,243		5.00	%

As of March 31, 2018, capital levels at the Company and the Bank exceed all capital adequacy requirements under the Basel III Capital Rules on a fully phased-in basis. Also, at March 31, 2018 and December 31, 2017, the Bank’s capital levels exceeded the minimum amounts necessary to be considered well capitalized under the current regulatory framework for prompt corrective action.

Beginning January 1, 2016, the Basel III Capital Rules implemented a requirement for all banking organizations to maintain a capital conservation buffer above the minimum risk-based capital requirements in order to avoid certain limitations on capital distributions, stock repurchases and discretionary bonus payments to executive officers. The capital conservation buffer is exclusively composed of common equity tier 1 capital, and it applies to each of the risk-based capital ratios but not the leverage ratio. At March 31, 2018, the Company and the Bank are in compliance with the capital conservation buffer requirement. The three risk-based capital ratios will increase by 0.625% each year through 2019, at which point, the common equity tier 1 risk-based, tier 1 risk-based and total risk-based capital ratio minimums will be 7.0%, 8.5% and 10.5%, respectively.

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Summary of Quarterly Results of Operations (unaudited)

3 Months Ended

Mar. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Results of Operations (unaudited)

Note 30 - Summary of Quarterly Results of Operations (unaudited)

The following table sets forth the results of operations for the periods indicated, and is unaudited; however, in the opinion of Management, it reflects all adjustments (which include only normal recurring adjustments) necessary to present fairly the summarized results for such periods.

	2018 Quarters Ended
	December 31,	September 30,	June 30,	March 31,
	(dollars in thousands, except per share data)
Interest and dividend income:
Loans:
Discount accretion PCI – cash basis				$	246
Discount accretion PCI – other					60
Discount accretion PNCI					326
All other loan interest income					37,417
Total loan interest income					38,049
Debt securities, dividends and interest bearing cash at banks (not FTE)					9,072
Total interest income					47,121
Interest expense					2,135
Net interest income					44,986
(Benefit from reversal of) provision for loan losses					(236	)
Net interest income after provision for loan losses					45,222
Noninterest income					12,290
Noninterest expense					38,162
Income before income taxes					19,350
Income tax expense					5,440
Net income				$	13,910
Per common share:
Net income (diluted)				$	0.60
Dividends				$	0.17

	2017 Quarters Ended
	December 31,		September 30,		June 30,			March 31,
	(dollars in thousands, except per share data)
Interest and dividend income:
Loans:
Discount accretion PCI – cash basis	$	516	$	398	$	386		$	112
Discount accretion PCI – other		445		407		797			631
Discount accretion PNCI		528		559		987			798
All other loan interest income		36,705		35,904		34,248			33,373
Total loan interest income		38,194		37,268		36,418			34,914
Debt securities, dividends and interest bearing cash at banks (not FTE)		8,767		8,645		8,626			8,570
Total interest income		46,961		45,913		45,044			43,484
Interest expense		1,868		1,829		1,610			1,491
Net interest income		45,093		44,084		43,434			41,993
Provision for (benefit from reversal of provision for) loan losses		1,677		765		(796	)		(1,557	)
Net interest income after provision for loan losses		43,416		43,319		44,230			43,550
Noninterest income		12,478		12,930		12,910			11,703
Noninterest expense		38,076		37,222		35,904			35,822
Income before income taxes		17,818		19,027		21,236			19,431
Income tax expense		14,829		7,130		7,647			7,352
Net income	$	2,989	$	11,897	$	13,589		$	12,079
Per common share:
Net income (diluted)	$	0.13	$	0.51	$	0.58		$	0.52
Dividends	$	0.17	$	0.17	$	0.17		$	0.15

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Description of Business and Basis of Presentation

Description of Business and Basis of Presentation

TriCo Bancshares (the “Company” or “we”) is a California corporation organized to act as a bank holding company for Tri Counties Bank (the “Bank”). The Company and the Bank are headquartered in Chico, California. The Bank is a California-chartered bank that is engaged in the general commercial banking business in 26 California counties. The Bank operates from 57 traditional branches and 9 in-store branches. The Company has five capital subsidiary business trusts (collectively, the “Capital Trusts”) that issued trust preferred securities, including two organized by TriCo and three acquired with the acquisition of North Valley Bancorp. See Note 17 – Junior Subordinated Debt.

The consolidated financial statements are prepared in accordance with accounting policies generally accepted in the United States of America and general practices in the banking industry. The consolidated financial statements include the accounts of the Company. All inter-company accounts and transactions have been eliminated in consolidation. For financial reporting purposes, the Company’s investments in the Capital Trusts of $1,703,000 are accounted for under the equity method and, accordingly, are not consolidated and are included in other assets on the consolidated balance sheet. The subordinated debentures issued and guaranteed by the Company and held by the Capital Trusts are reflected as debt on the Company’s consolidated balance sheet.

Use of Estimates in the Preparation of Financial Statements

Use of Estimates in the Preparation of Financial Statements

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires Management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

Significant Group Concentration of Credit Risk

Significant Group Concentration of Credit Risk

The Company grants agribusiness, commercial, consumer, and residential loans to customers located throughout the northern San Joaquin Valley, the Sacramento Valley and northern mountain regions of California. The Company has a diversified loan portfolio within the business segments located in this geographical area. The Company currently classifies all its operation into one business segment that it denotes as community banking.

Cash and Cash Equivalents

Cash and Cash Equivalents

For purposes of the consolidated statements of cash flows, cash and cash equivalents include cash on hand, amounts due from banks, and federal funds sold. Net cash flows are reported for loan and deposit transactions and other borrowings.

Marketable Equity Securities

Marketable Equity Securities

As of December 31, 2017, marketable equity securities with a fair value of $2,938,000 were recorded within investment securities available for sale on the consolidated balance sheets with changes in the fair value recorded through other comprehensive income and accumulated other comprehensive income (loss). As of January 1, 2018, the Company adopted Accounting Standard Update (“ASU”) 2016-01 using a prospective transition approach and reclassified its marketable equity securities from investments available for sale into a separate component of investment securities. The ASU requires marketable equity securities to be reported at fair value with changes in the fair value recorded through earnings. As of January 1, 2018, unrealized losses of $62,000 were reclassified from accumulated other comprehensive loss to retained earnings and the deferred tax asset was reduced by $18,000. During the three months ended March 31, 2018, the Company recognized $48,000 of unrealized losses in the condensed consolidated statements of income.

Debt Securities

Debt Securities

The Company classifies its debt securities into one of three categories: trading, available for sale or held to maturity. Trading securities are bought and held principally for the purpose of selling in the near term. Held to maturity securities are those securities which the Company has the ability and intent to hold until maturity. These securities are carried at cost adjusted for amortization of premium and accretion of discount, computed by the effective interest method over their contractual lives. All other securities not included in trading or held to maturity are classified as available for sale. Available for sale securities are recorded at fair value. Unrealized gains and losses, net of the related tax effect, on available for sale securities are reported as a separate component of other accumulated comprehensive income in shareholders’ equity until realized. Premiums and discounts are amortized or accreted over the life of the related investment security as an adjustment to yield using the effective interest method. Dividend and interest income are recognized when earned. Realized gains and losses are derived from the amortized cost of the security sold. During the three months ended March 31, 2018 and throughout 2017, the Company did not have any debt securities classified as trading.

The Company assesses other-than-temporary impairment (“OTTI”) based on whether it intends to sell a security or if it is likely that the Company would be required to sell the security before recovery of the amortized cost basis of the investment, which may be maturity. For debt securities, if we intend to sell the security or it is more likely than not that we will be required to sell the security before recovering its cost basis, the entire impairment loss would be recognized in earnings as an OTTI. If we do not intend to sell the security and it is not likely that we will be required to sell the security but we do not expect to recover the entire amortized cost basis of the security, only the portion of the impairment loss representing credit losses would be recognized in earnings. The credit loss on a security is measured as the difference between the amortized cost basis and the present value of the cash flows expected to be collected. Projected cash flows are discounted by the original or current effective interest rate depending on the nature of the security being measured for potential OTTI. The remaining impairment related to all other factors, the difference between the present value of the cash flows expected to be collected and fair value, is recognized as a charge to other comprehensive income (“OCI”). Impairment losses related to all other factors are presented as separate categories within OCI. The accretion of the amount recorded in OCI increases the carrying value of the investment and does not affect earnings. If there is an indication of additional credit losses the security is re-evaluated according to the procedures described above. No OTTI losses were recognized during the three months ended March 31, 2018 or the year ended December 31, 2017.

Restricted Equity Securities

Restricted Equity Securities

Restricted equity securities represent the Company’s investment in the stock of the Federal Home Loan Bank of San Francisco (“FHLB”) and are carried at par value, which reasonably approximates its fair value. While technically these are considered equity securities, there is no market for the FHLB stock. Therefore, the shares are considered as restricted investment securities. Management periodically evaluates FHLB stock for other-than-temporary impairment. Management’s determination of whether these investments are impaired is based on its assessment of the ultimate recoverability of cost rather than by recognizing temporary declines in value. The determination of whether a decline affects the ultimate recoverability of cost is influenced by criteria such as (1) the significance of any decline in net assets of the FHLB as compared to the capital stock amount for the FHLB and the length of time this situation has persisted, (2) commitments by the FHLB to make payments required by law or regulation and the level of such payments in relation to the operating performance of the FHLB, (3) the impact of legislative and regulatory changes on institutions and, accordingly, the customer base of the FHLB, and (4) the liquidity position of the FHLB.

As a member of the FHLB system, the Bank is required to maintain a minimum level of investment in FHLB stock based on specific percentages of its outstanding mortgages, total assets, or FHLB advances. The Bank may request redemption at par value of any stock in excess of the minimum required investment. Stock redemptions are at the discretion of the FHLB.

Loans Held for Sale

Loans Held for Sale

Loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or fair value, as determined by aggregate outstanding commitments from investors of current investor yield requirements. Net unrealized losses are recognized through a valuation allowance by charges to noninterest income.

Mortgage loans held for sale are generally sold with the mortgage servicing rights retained by the Company. Gains or losses on the sale of loans that are held for sale are recognized at the time of the sale and determined by the difference between net sale proceeds and the net book value of the loans less the estimated fair value of any retained mortgage servicing rights.

Loans and Allowance for Loan Losses

Loans and Allowance for Loan Losses

Loans originated by the Company, i.e., not purchased or acquired in a business combination, are referred to as originated loans. Originated loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal amount outstanding, net of deferred loan fees and costs. Loan origination and commitment fees and certain direct loan origination costs are deferred, and the net amount is amortized as an adjustment of the related loan’s yield over the actual life of the loan. Originated loans on which the accrual of interest has been discontinued are designated as nonaccrual loans.

Originated loans are placed in nonaccrual status when reasonable doubt exists as to the full, timely collection of interest or principal, or a loan becomes contractually past due by 90 days or more with respect to interest or principal and is not well secured and in the process of collection. When an originated loan is placed on nonaccrual status, all interest previously accrued but not collected is reversed. Income on such loans is then recognized only to the extent that cash is received and where the future collection of principal is probable. Interest accruals are resumed on such loans only when they are brought fully current with respect to interest and principal and when, in the judgment of Management, the loan is estimated to be fully collectible as to both principal and interest.

An allowance for loan losses for originated loans is established through a provision for loan losses charged to expense. The allowance is maintained at a level which, in Management’s judgment, is adequate to absorb probable incurred credit losses inherent in the loan portfolio as of the balance sheet date. Originated loans and deposit related overdrafts are charged against the allowance for loan losses when Management believes that the collectability of the principal is unlikely or, with respect to consumer installment loans, according to an established delinquency schedule. The allowance is an amount that Management believes will be adequate to absorb probable incurred losses inherent in existing loans, based on evaluations of the collectability, impairment and prior loss experience of loans. The evaluations take into consideration such factors as changes in the nature and size of the portfolio, overall portfolio quality, loan concentrations, specific problem loans, and current economic conditions that may affect the borrower’s ability to pay. The Company defines an originated loan as impaired when it is probable the Company will be unable to collect all amounts due according to the original contractual terms of the loan agreement. Impaired originated loans are measured based on the present value of expected future cash flows discounted at the loan’s original effective interest rate. As a practical expedient, impairment may be measured based on the loan’s observable market price or the fair value of the collateral if the loan is collateral dependent. When the measure of the impaired loan is less than the recorded investment in the loan, the impairment is recorded through a specific reserve allocation within the allowance for loan losses.    

In situations related to originated loans where, for economic or legal reasons related to a borrower’s financial difficulties, the Company grants a concession for other than an insignificant period of time to the borrower that the Company would not otherwise consider, the related loan is classified as a troubled debt restructuring (TDR). The Company strives to identify borrowers in financial difficulty early and work with them to modify to more affordable terms before their loan reaches nonaccrual status. These modified terms may include rate reductions, principal forgiveness, payment forbearance and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of the collateral. In cases where the Company grants the borrower new terms that result in the loan being classified as a TDR, the Company measures any impairment on the restructuring as noted above for impaired loans. TDR loans are classified as impaired until they are fully paid off or charged off. Loans that are in nonaccrual status at the time they become TDR loans, remain in nonaccrual status until the borrower demonstrates a sustained period of performance which the Company generally believes to be six consecutive months of payments, or equivalent. Otherwise, TDR loans are subject to the same nonaccrual and charge-off policies as noted above with respect to their restructured principal balance.

Credit risk is inherent in the business of lending. As a result, the Company maintains an allowance for loan losses to absorb probable incurred losses inherent in the Company’s originated loan portfolio. This is maintained through periodic charges to earnings. These charges are included in the Consolidated Statements of Income as provision for loan losses. All specifically identifiable and quantifiable losses are immediately charged off against the allowance. However, for a variety of reasons, not all losses are immediately known to the Company and, of those that are known, the full extent of the loss may not be quantifiable at that point in time. The balance of the Company’s allowance for originated loan losses is meant to be an estimate of these probable incurred losses inherent in the portfolio.

The Company formally assesses the adequacy of the allowance for originated loan losses on a quarterly basis. Determination of the adequacy is based on ongoing assessments of the probable risk in the outstanding originated loan portfolio, and to a lesser extent the Company’s originated loan commitments. These assessments include the periodic re-grading of credits based on changes in their individual credit characteristics including delinquency, seasoning, recent financial performance of the borrower, economic factors, changes in the interest rate environment, growth of the portfolio as a whole or by segment, and other factors as warranted. Loans are initially graded when originated. They are re-graded as they are renewed, when there is a new loan to the same borrower, when identified facts demonstrate heightened risk of nonpayment, or if they become delinquent. Re-grading of larger problem loans occurs at least quarterly. Confirmation of the quality of the grading process is obtained by independent credit reviews conducted by consultants specifically hired for this purpose and by various bank regulatory agencies.

The Company’s method for assessing the appropriateness of the allowance for originated loan losses includes specific allowances for impaired originated loans, formula allowance factors for pools of credits, and allowances for changing environmental factors (e.g., interest rates, growth, economic conditions, etc.). Allowance factors for loan pools were based on historical loss experience by product type and prior risk rating.

Loans purchased or acquired in a business combination are referred to as acquired loans. Acquired loans are valued as of the acquisition date in accordance with Financial Accounting Standards Board Accounting Standards Codification (“FASB ASC”) Topic 805, Business Combinations. Loans acquired with evidence of credit deterioration since origination for which it is probable that all contractually required payments will not be collected are referred to as purchased credit impaired (PCI) loans. PCI loans are accounted for under FASB ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality. Under FASB ASC Topic 805 and FASB ASC Topic 310-30, PCI loans are recorded at fair value at acquisition date, factoring in credit losses expected to be incurred over the life of the loan. Accordingly, an allowance for loan losses is not carried over or recorded as of the acquisition date. Fair value is defined as the present value of the future estimated principal and interest payments of the loan, with the discount rate used in the present value calculation representing the estimated effective yield of the loan. Default rates, loss severity, and prepayment speed assumptions are periodically reassessed and our estimate of future payments is adjusted accordingly. The difference between contractual future payments and estimated future payments is referred to as the nonaccretable difference. The difference between estimated future payments and the present value of the estimated future payments is referred to as the accretable yield. The accretable yield represents the amount that is expected to be recorded as interest income over the remaining life of the loan. If after acquisition, the Company determines that the estimated future cash flows of a PCI loan are expected to be more than originally estimated, an increase in the discount rate (effective yield) would be made such that the newly increased accretable yield would be recognized, on a level yield basis, over the remaining estimated life of the loan. If, thereafter, the Company determines that the estimated future cash flows of a PCI loan are expected to be less than previously estimated, an allowance for loan loss would be established through a provision for loan losses charged to expense to decrease the present value to the required level. If the estimated cash flows improve after an allowance has been established for a loan, the allowance may be partially or fully reversed depending on the improvement in the estimated cash flows. Only after the allowance has been fully reversed may the discount rate be increased. PCI loans are put on nonaccrual status when cash flows cannot be reasonably estimated. PCI loans on nonaccrual status are accounted for using the cost recovery method or cash basis method of income recognition. The Company refers to PCI loans on nonaccrual status that are accounted for using the cash basis method of income recognition as “PCI – cash basis” loans; and the Company refers to all other PCI loans as “PCI – other” loans PCI loans are charged off when evidence suggests cash flows are not recoverable. Foreclosed assets from PCI loans are recorded in foreclosed assets at fair value with the fair value at time of foreclosure representing cash flow from the loan. ASC 310-30 allows PCI loans with similar risk characteristics and acquisition time frame to be “pooled” and have their cash flows aggregated as if they were one loan. The Company elected to use the “pooled” method of ASC 310-30 for PCI – other loans in the acquisition of certain assets and liabilities of Granite Community Bank, N.A. (“Granite”) during 2010 and Citizens Bank of Northern California (“Citizens”) during 2011.

Acquired loans that are not PCI loans are referred to as purchased not credit impaired (PNCI) loans. PNCI loans are accounted for under FASB ASC Topic 310-20, Receivables – Nonrefundable Fees and Other Costs, in which interest income is accrued on a level-yield basis for performing loans. For income recognition purposes, this method assumes that all contractual cash flows will be collected, and no allowance for loan losses is established at the time of acquisition. Post-acquisition date, an allowance for loan losses may need to be established for acquired loans through a provision charged to earnings for credit losses incurred subsequent to acquisition. Under ASC 310-20, the loss would be measured based on the probable shortfall in relation to the contractual note requirements, consistent with our allowance for loan loss policy for similar loans.

Throughout these financial statements, and in particular in Note 4 and Note 5, when we refer to “Loans” or “Allowance for loan losses” we mean all categories of loans, including Originated, PNCI, PCI – cash basis, and PCI—other. When we are not referring to all categories of loans, we will indicate which we are referring to – Originated, PNCI, PCI – cash basis, or PCI—other.

When referring to PNCI and PCI loans we use the terms “nonaccretable difference”, “accretable yield”, or “purchase discount”. Nonaccretable difference is the difference between undiscounted contractual cash flows due and undiscounted cash flows we expect to collect, or put another way, it is the undiscounted contractual cash flows we do not expect to collect. Accretable yield is the difference between undiscounted cash flows we expect to collect and the value at which we have recorded the loan on our financial statements. On the date of acquisition, all purchased loans are recorded on our consolidated financial statements at estimated fair value. Purchase discount is the difference between the estimated fair value of loans on the date of acquisition and the principal amount owed by the borrower, net of charge offs, on the date of acquisition. We may also refer to “discounts to principal balance of loans owed, net of charge-offs”. Discounts to principal balance of loans owed, net of charge-offs is the difference between principal balance of loans owed, net of charge-offs, and loans as recorded on our financial statements. Discounts to principal balance of loans owed, net of charge-offs arise from purchase discounts, and equal the purchase discount on the acquisition date.

Loans are also categorized as “covered” or “noncovered”. Covered loans refer to loans covered by a Federal Deposit Insurance Corporation (“FDIC”) loss sharing agreement. Noncovered loans refer to loans not covered by a FDIC loss sharing agreement. On May 9, 2017, the Company and the FDIC terminated their loss sharing agreements.

Foreclosed Assets

Foreclosed Assets

Foreclosed assets include assets acquired through, or in lieu of, loan foreclosure. Foreclosed assets are held for sale and are initially recorded at fair value less estimated costs to sell at the date of foreclosure, establishing a new cost basis. Physical possession of residential real estate property collateralizing a consumer mortgage loan occurs when legal title is obtained upon completion of foreclosure or when the borrower conveys all interest in the property to satisfy the loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Any write-downs based on the asset’s fair value less costs to sell at the date of acquisition are charged to the allowance for loan and lease losses. Any recoveries based on the asset’s fair value less estimated costs to sell in excess of the recorded value of the loan at the date of acquisition are recorded to the allowance for loan and lease losses. These assets are subsequently accounted for at lower of cost or fair value less estimated costs to sell. If fair value declines subsequent to foreclosure, a valuation allowance is recorded through expense. Operating costs after acquisition are expensed. Revenue and expenses from operations and changes in the valuation allowance are included in other noninterest expense. Gain or loss on sale of foreclosed assets is included in noninterest income. Foreclosed assets that are not subject to a FDIC loss-share agreement are referred to as noncovered foreclosed assets.

Foreclosed assets acquired through FDIC-assisted acquisitions that are subject to a FDIC loss-share agreement, and all assets acquired via foreclosure of covered loans are referred to as covered foreclosed assets. Covered foreclosed assets are reported exclusive of expected reimbursement cash flows from the FDIC. Foreclosed covered loan collateral is transferred into covered foreclosed assets at the loan’s carrying value, inclusive of the acquisition date fair value discount.

Covered foreclosed assets are initially recorded at estimated fair value less estimated costs to sell on the acquisition date based on similar market comparable valuations less estimated selling costs. Any subsequent valuation adjustments due to declines in fair value will be charged to noninterest expense, and will be mostly offset by noninterest income representing the corresponding increase to the FDIC indemnification asset for the offsetting loss reimbursement amount. Any recoveries of previous valuation adjustments will be credited to noninterest expense with a corresponding charge to noninterest income for the portion of the recovery that is due to the FDIC.

Premises and Equipment

Premises and Equipment

Land is carried at cost. Land improvements, buildings and equipment, including those acquired under capital lease, are stated at cost less accumulated depreciation and amortization. Depreciation and amortization expenses are computed using the straight-line method over the shorter of the estimated useful lives of the related assets or lease terms. Asset lives range from 3-10 years for furniture and equipment and 15-40 years for land improvements and buildings.

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets

Goodwill represents the excess of costs over fair value of net assets of businesses acquired. Goodwill and other intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are not amortized, but instead tested for impairment at least annually. Intangible assets with estimable useful lives are amortized over their respective estimated useful lives to their estimated residual values, and reviewed for impairment.

The Company has an identifiable intangible asset consisting of core deposit intangibles (CDI). CDI are amortized over their respective estimated useful lives, and reviewed for impairment.

Impairment of Long-Lived Assets and Goodwill

Impairment of Long-Lived Assets and Goodwill

Long-lived assets, such as premises and equipment, and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposed group classified as held for sale would be presented separately in the appropriate asset and liability sections of the consolidated balance sheet.

As of December 31 of each year, goodwill is tested for impairment, and is tested for impairment more frequently if events and circumstances indicate that the asset might be impaired. An impairment loss is recognized to the extent that the carrying amount exceeds the asset’s fair value. This determination is made at the reporting unit level. The Company may choose to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If, after assessing the totality of events or circumstances, the Company determines it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then goodwill is deemed not to be impaired. However, if the Company concludes otherwise, or if the Company elected not to first assess qualitative factors, then the Company performs the first step of a two-step impairment test by calculating the fair value of the reporting unit and comparing the fair value with the carrying amount of the reporting unit. Second, if the carrying amount of the reporting unit exceeds its fair value, an impairment loss is recognized for any excess of the carrying amount of the reporting unit’s goodwill over the implied fair value of that goodwill. The implied fair value of goodwill is determined by allocating the fair value of the reporting unit in a manner similar to a purchase price allocation. The residual fair value after this allocation is the implied fair value of the reporting unit goodwill. Currently, and historically, the Company is comprised of only one reporting unit that operates within the business segment it has identified as “community banking”. Goodwill was not impaired as of December 31, 2017 because the fair value of the reporting unit exceeded its carrying value.

Mortgage Servicing Rights

Mortgage Servicing Rights

Mortgage servicing rights (MSR) represent the Company’s right to a future stream of cash flows based upon the contractual servicing fee associated with servicing mortgage loans. Our MSR arise from residential and commercial mortgage loans that we originate and sell, but retain the right to service the loans. The net gain from the retention of the servicing right is included in gain on sale of loans in noninterest income when the loan is sold. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, the custodial earnings rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses. Servicing fees are recorded in noninterest income when earned.

The Company accounts for MSR at fair value. The determination of fair value of our MSR requires management judgment because they are not actively traded. The determination of fair value for MSR requires valuation processes which combine the use of discounted cash flow models and extensive analysis of current market data to arrive at an estimate of fair value. The cash flow and prepayment assumptions used in our discounted cash flow model are based on empirical data drawn from the historical performance of our MSR, which we believe are consistent with assumptions used by market participants valuing similar MSR, and from data obtained on the performance of similar MSR. The key assumptions used in the valuation of MSR include mortgage prepayment speeds and the discount rate. These variables can, and generally will, change from quarter to quarter as market conditions and projected interest rates change. The key risks inherent with MSR are prepayment speed and changes in interest rates. The Company uses an independent third party to determine fair value of MSR.

Indemnification Asset/Liability

Indemnification Asset/Liability

The Company accounts for amounts receivable or payable under its loss-share agreements entered into with the FDIC in connection with its purchase and assumption of certain assets and liabilities of Granite as indemnification assets in accordance with FASB ASC Topic 805, Business Combinations. FDIC indemnification assets are initially recorded at fair value, based on the discounted value of expected future cash flows under the loss-share agreements. The difference between the fair value and the undiscounted cash flows the Company expects to collect from or pay to the FDIC will be accreted into noninterest income over the life of the FDIC indemnification asset. FDIC indemnification assets are reviewed quarterly and adjusted for any changes in expected cash flows based on recent performance and expectations for future performance of the covered portfolios. These adjustments are measured on the same basis as the related covered loans and covered other real estate owned. Any increases in cash flow of the covered assets over those expected will reduce the FDIC indemnification asset and any decreases in cash flow of the covered assets under those expected will increase the FDIC indemnification asset. Increases and decreases to the FDIC indemnification asset are recorded as adjustments to noninterest income.

Reserve for Unfunded Commitments

Reserve for Unfunded Commitments

The reserve for unfunded commitments is established through a provision for losses – unfunded commitments charged to noninterest expense. The reserve for unfunded commitments is an amount that Management believes will be adequate to absorb probable losses inherent in existing commitments, including unused portions of revolving lines of credits and other loans, standby letters of credits, and unused deposit account overdraft privilege. The reserve for unfunded commitments is based on evaluations of the collectability, and prior loss experience of unfunded commitments. The evaluations take into consideration such factors as changes in the nature and size of the loan portfolio, overall loan portfolio quality, loan concentrations, specific problem loans and related unfunded commitments, and current economic conditions that may affect the borrower’s or depositor’s ability to pay.

Low Income Housing Tax Credits

Low Income Housing Tax Credits

The Company accounts for low income housing tax credits and the related qualified affordable housing projects using the proportional amortization method. Under the proportional amortization method, the Company amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense (benefit). Upon entering into a qualified affordable housing project, the Company records, in other liabilities, the entire amount that it has agreed to invest in the project, and an equal amount, in other assets, representing its investment in the project. As the Company disburses cash to satisfy its investment obligation, other liabilities are reduced. Over time, as the tax credits and other tax benefits of the project are realized by the Company, the investment recorded in other assets is reduced using the proportional amortization method.

Revenue Recognition

Revenue Recognition

The Company records revenue from contracts with customers in accordance with Accounting Standards Codification Topic 606, “Revenue from Contracts with Customers” (“Topic 606”). Under Topic 606, the Company must identify the contract with a customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract, and recognize revenue when (or as) the Company satisfies a performance obligation. Significant revenue has not been recognized in the current reporting period that results from performance obligations satisfied in previous periods.

Most of our revenue-generating transactions are not subject to ASC 606, including revenue generated from financial instruments, such as our loans and investment securities. In addition, certain noninterest income streams such as fees associated with mortgage servicing rights, financial guarantees, derivatives, and certain credit card fees are also not in scope of the new guidance. The Company’s noninterest revenue streams are largely based on transactional activity, or standard month-end revenue accruals such as asset management fees based on month-end market values. Consideration is often received immediately or shortly after the Company satisfies its performance obligation and revenue is recognized. The Company does not typically enter into long-term revenue contracts with customers, and therefore, does not experience significant contract balances. As of March 31, 2018 and December 31, 2017, the Company did not have any significant contract balances. The Company has evaluated the nature of its revenue streams and determined that further disaggregation of revenue into more granular categories beyond what is presented in the Note 21 was not necessary.

Income Taxes

Income Taxes

The Company’s accounting for income taxes is based on an asset and liability approach. The Company recognizes the amount of taxes payable or refundable for the current year, and deferred tax assets and liabilities for the future tax consequences that have been recognized in its financial statements or tax returns. The measurement of tax assets and liabilities is based on the provisions of enacted tax laws. A valuation allowance, if needed, reduces deferred tax assets to the expected amount most likely to be realized. Realization of deferred tax assets is dependent upon the generation of a sufficient level of future taxable income and recoverable taxes paid in prior years. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets will be realized. Interest and/or penalties related to income taxes are reported as a component of noninterest income.

Off-Balance Sheet Credit Related Financial Instruments

Off-Balance Sheet Credit Related Financial Instruments

In the ordinary course of business, the Company has entered into commitments to extend credit, including commitments under credit card arrangements, commercial letters of credit, and standby letters of credit. Such financial instruments are recorded when they are funded.

Geographical Descriptions

Geographical Descriptions

For the purpose of describing the geographical location of the Company’s loans, the Company has defined northern California as that area of California north of, and including, Stockton; central California as that area of the state south of Stockton, to and including, Bakersfield; and southern California as that area of the state south of Bakersfield.

Reclassifications

Reclassifications

During the three months ended September 30, 2017, the Company changed its classification of 1st lien and 2nd lien non-owner occupied 1-4 residential real estate mortgage loans from commercial real estate mortgage loans to residential real estate mortgage loans and consumer home equity loans, respectively. This change in loan category classification was made to better align the Company’s financial reporting classifications with regulatory reporting classifications, and to properly classify these loans for regulatory risk-based capital ratio calculations.

Certain amounts reported in previous consolidated financial statements have been reclassified and recalculated to conform to the presentation in this report. These reclassifications did not affect previously reported net income, total loans or total shareholders’ equity.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

FASB Accounting Standards Update (ASU) No.2014-09, Revenue from Contracts with Customers (Topic 606): ASU 2014-09 is intended to clarify the principles for recognizing revenue, and to develop common revenue standards and disclosure requirements that would: (1) remove inconsistencies and weaknesses in revenue requirements; (2) provide a more robust framework for addressing revenue issues; (3) improve comparability of revenue recognition practices across entities, industries, jurisdictions, and capital markets; (4) provide more useful information to users of financial statements through improved disclosures; and (5) simplify the preparation of financial statements by reducing the number of requirements to which an entity must refer. The guidance affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets. The core principle is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance provides steps to follow to achieve the core principle. An entity should disclose sufficient information to enable users of financial statements to understand the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Qualitative and quantitative information is required with regard to contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2017, including interim periods therein, with early adoption permitted for reporting periods beginning after December 15, 2016. ASU 2014-09 does not apply to revenue associated with financial instruments such as loans and investments, which are accounted for under other provisions of GAAP. The Company adopted ASU 2014-09 on January 1, 2018 utilizing the modified retrospective approach. Since there was no net income impact upon adoption of the new guidance, a cumulative effect adjustment to opening retained earnings was not deemed necessary.

In January 2016, the FASB issued ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities.” This ASU addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments by making targeted improvements to GAAP as follows: (1) require equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer; (2) simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. When a qualitative assessment indicates that impairment exists, an entity is required to measure the investment at fair value; (3) eliminate the requirement to disclose the fair value of financial instruments measured at amortized cost for entities that are not public business entities; (4) eliminate the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; (5) require public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (6) require an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (7) require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements; and (8) clarify that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets. The adoption of ASU No. 2016-01 on January 1, 2018 did not have a material impact on the Company’s Consolidated Financial Statements. In accordance with (1) above, the Company recorded a reclassification of cumulative unrealized losses of its marketable equity securities from accumulated other comprehensive income (loss) to retained earnings as of January 1, 2018. Additionally, the Company recognized changes in the fair value of its marketable equity securities in the condensed consolidated statements of net income for the three months ended March 31, 2018. In accordance with (5) above, the Company measured the fair value of its loan portfolio as of March 31, 2018 using an exit price notion (see Note 27 Fair Value Measurement).

FASB issued Accounting Standard Update (ASU) No. 2016-02, Leases (Topic 842). ASU 2016-2, among other things, requires lessees to recognize most leases on-balance sheet, increasing reported assets and liabilities. Lessor accounting remains substantially similar to current U.S. GAAP. ASU 2016-02will be effective for the Company on January 1, 2019, utilizing the modified retrospective transition approach. The Company is currently evaluating the provisions of ASU No. 2016-02 and has determined that the adoption of this standard will result in an increase in assets to recognize the present value of the lease obligations with a corresponding increase in liabilities; however, the Company does not expect this to have a material impact on the Company’s results of operations or cash flows.

FASB issued Accounting Standard Update (ASU) No. 2016-09, Compensation – Stock Compensation (Topic 718). ASU 2016-09, among other things, requires: (i) that all excess tax benefits and tax deficiencies (including tax benefits of dividends on share-based payment awards) should be recognized as income tax expense or benefit in the income statement, (ii) the tax effects of exercised or vested awards should be treated as discrete items in the reporting period in which they occur, (iii) an entity also should recognize excess tax benefits regardless of whether the benefit reduces taxes payable in the current period, (iv) excess tax benefits should be classified along with other income tax cash flows as an operating activity, (v) an entity can make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest (current GAAP) or account for forfeitures when they occur, (vi) the threshold to qualify for equity classification permits withholding up to the maximum statutory tax rates in the applicable jurisdictions, and (vii) cash paid by an employer when directly withholding shares for tax withholding purposes should be classified as a financing activity. ASU 2016-09 was effective for the Company on January 1, 2017 and due to the options exercised during the three months ended March 31, 2017, resulted in the recognition of $90,000 in excess tax benefits.

FASB issued ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326). ASU 2016-13 is the final guidance on the new current expected credit loss (‘‘CECL’’) model. ASU 2016-13, among other things, requires the incurred loss impairment methodology in current GAAP be replaced with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to estimate future credit loss estimates. As CECL encompasses all financial assets carried at amortized cost, the requirement that reserves be established based on an organization’s reasonable and supportable estimate of expected credit losses extends to held to maturity (‘‘HTM’’) debt securities. ASU 2016-13 amends the accounting for credit losses on available-for-sale securities (‘‘AFS’’), whereby credit losses will be presented as an allowance as opposed to a write-down. In addition, CECL will modify the accounting for purchased loans with credit deterioration since origination, so that reserves are established at the date of acquisition for purchased loans. Lastly, ASU 2016-13 requires enhanced disclosures on the significant estimates and judgments used to estimate credit losses, as well as on the credit quality and underwriting standards of an organization’s portfolio. These disclosures require organizations to present the currently required credit quality disclosures disaggregated by the year of origination or vintage. ASU 2016-13 allows for a modified retrospective approach with a cumulative effect adjustment to the balance sheet upon adoption (charge to retained earnings instead of the income statement). ASU 2016-13 will be effective for the Company on January 1, 2020, and early adoption is permitted. While the Company is currently evaluating the provisions of ASU 2016-13 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements, it has taken steps to prepare for the implementation when it becomes effective, such as forming an internal task force, gathering pertinent data, consulting with outside professionals, and evaluating its current IT systems. Management expects to recognize a one-time cumulative effect adjustment to the allowance for loan losses as of the first reporting period in which the new standard is effective, but cannot yet estimate the magnitude of the one-time adjustment or the overall impact of the new guidance on the Company’s financial position, results of operations or cash flows.

FASB issued ASU No. 2016-18, Statement of Cash Flows—Restricted Cash (Topic 230). ASU 2016-18 requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. ASU 2016-18 was effective for the Company on January 1, 2018 and is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU No. 2017-01, Business Combinations—Clarifying the Definition of a Business (Topic 805). ASU 2017-01 clarifies the definition and provides a more robust framework to use in determining when a set of assets and activities constitutes a business. ASU 2017-01 is intended to provide guidance when evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. ASU 2017-01 was effective for us on January 1, 2018 and did not have a significant impact on our financial statements.

FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other: Simplifying the Test for Goodwill Impairment (Topic 350): ASU 2017-04 eliminates step two of the goodwill impairment test (the hypothetical purchase price allocation used to determine the implied fair value of goodwill) when step one (determining if the carrying value of a reporting unit exceeds its fair value) is failed. Instead, entities simply will compare the fair value of a reporting unit to its carrying amount and record goodwill impairment for the amount by which the reporting unit’s carrying amount exceeds its fair value. ASU 2017-04will be effective for the Company on January 1, 2020 and is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU No. 2017-07, Compensation—Retirement Benefits (Topic 715). ASU 2017-07 requires that an employer report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the income statement separately from the service cost component. ASU 2017-07 was effective for the Company on January 1, 2018 and did not have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU 2017-08, Receivables—Nonrefundable Fees and Other Costs (Topic 310). ASU 2017-08 shortens the amortization period for certain callable debt securities held at a premium to require such premiums to be amortized to the earliest call date unless applicable guidance related to certain pools of securities is applied to consider estimated prepayments. Under prior guidance, entities were generally required to amortize premiums on individual, non-pooled callable debt securities as a yield adjustment over the contractual life of the security. ASU 2017-08 does not change the accounting for callable debt securities held at a discount. ASU 2017-08 will be effective for the Company on January 1, 2019, and is not expected to have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU 2017-09, Compensation—Stock Compensation (Topic 718). ASU 2017-09 clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. Under ASU 2017-09, an entity will not apply modification accounting to a share-based payment award if all of the following are the same immediately before and after the change: (i) the award’s fair value, (ii) the award’s vesting conditions and (iii) the award’s classification as an equity or liability instrument. ASU 2017-09 was effective for the Company on January 1, 2018 and did not have a significant impact on the Company’s consolidated financial statements.

FASB issued ASU 2018-02, Income Statement—Reporting Comprehensive Income (Topic 220). ASU 2018-02 allows, but does not require, entities to reclassify certain income tax effects in accumulated other comprehensive income (AOCI) to retained earnings that resulted from the Tax Cuts and Jobs Act (Tax Act) that was enacted on December 22, 2017. The Tax Act included a reduction to the Federal corporate income tax rate from 35 percent to 21 percent effective January 1, 2018. The amount of the reclassification would be the difference between the income tax effects in AOCI calculated using the historical Federal corporate income tax rate of 35 percent and the income tax effects in AOCI calculated using the newly enacted 21 percent Federal corporate income tax rate. The amendments in ASU 2018-02 are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company adopted ASU 2018-02 on January 1, 2018, and elected to reclassify certain income tax effects in AOCI to retained earnings. This change in accounting principle was accounted for as a cumulative-effect adjustment to the balance sheet resulting in a $1,093,000 increase to retained earnings and a corresponding decrease to AOCI on January 1, 2018.

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Investment Securities (Tables)

3 Months Ended

Mar. 31, 2018

Investments Schedule [Abstract]

Amortized Cost and Estimated Fair Values of Investments in Debt Securities

The amortized cost and estimated fair values of investments in debt securities are summarized in the following tables:

	March 31, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(in thousands)
Debt Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	633,310	$	317	$	(16,970	)	$	616,657
Obligations of states and political subdivisions		121,560		466		(2,788	)		119,238
Total debt securities available for sale	$	754,870	$	783	$	(19,758	)	$	735,895
Debt Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	481,457	$	533	$	(7,737	)	$	474,253
Obligations of states and political subdivisions		14,578		39		(231	)		14,386
Total debt securities held to maturity	$	496,035	$	572	$	(7,968	)	$	488,639
	December 31, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	(in thousands)
Debt Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	609,695	$	695	$	(5,601	)	$	604,789
Obligations of states and political subdivisions		121,597		1,888		(329	)		123,156
Total debt securities available for sale	$	731,292	$	2,583	$	(5,930	)	$	727,945
Debt Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	500,271	$	5,101	$	(1,889	)	$	503,483
Obligations of states and political subdivisions		14,573		146		(37	)		14,682
Total debt securities held to maturity	$	514,844	$	5,247	$	(1,926	)	$	518,165

Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity

For purposes of the following table, the entire outstanding balance of these mortgage-backed securities issued by U.S. government corporations and agencies is categorized based on final maturity date.  

Debt Securities	Available for Sale				Held to Maturity
(In thousands)	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
Due in one year	$	2	$	2	$	—	$	—
Due after one year through five years		235		236		1,215		1,228
Due after five years through ten years		3,324		3,452		20,631		20,291
Due after ten years		751,309		732,205		474,189		467,120
Totals	$	754,870	$	735,895	$	496,035	$	488,639

Gross Unrealized Losses on Debt Securities

Gross unrealized losses on debt securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position were as follows:

	Less than 12 months					12 months or more					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
						(in thousands)
March 31, 2018
Debt Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	434,302	$	(10,345	)	$	158,324	$	(6,625	)	$	592,626	$	(16,970	)
Obligations of states and political subdivisions		65,047		(1,456	)		16,042		(1,332	)		81,089		(2,788	)
Total debt securities available for sale	$	499,349	$	(11,801	)	$	174,366	$	(7,957	)	$	673,715	$	(19,758	)
Debt Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	299,575	$	(4,551	)	$	89,809	$	(3,186	)	$	389,384	$	(7,737	)
Obligations of states and political subdivisions		8,901		(144	)		2,579		(87	)		11,480		(231	)
Total debt securities held to maturity	$	308,476	$	(4,695	)	$	92,388	$	(3,273	)	$	400,864	$	(7,968	)
	Less than 12 months					12 months or more					Total
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
						(in thousands)
December 31, 2017
Debt Securities Available for Sale
Obligations of U.S. government corporations and agencies	$	284,367	$	(2,176	)	$	166,338	$	(3,425	)	$	450,705	$	(5,601	)
Obligations of states and political subdivisions		4,904		(35	)		17,085		(294	)		21,989		(329	)
Total securities available for sale	$	289,271	$	(2,211	)	$	183,423	$	(3,719	)	$	472,694	$	(5,930	)
Debt Securities Held to Maturity
Obligations of U.S. government corporations and agencies	$	93,017	$	(567	)	$	95,367	$	(1,322	)	$	188,384	$	(1,889	)
Obligations of states and political subdivisions		1,488		(7	)		2,637		(30	)		4,125		(37	)
Total debt securities held to maturity	$	94,505	$	(574	)	$	98,004	$	(1,352	)	$	192,509	$	(1,926	)

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Loans (Tables)

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Summary of Loan Balances

A summary of loan balances follows (in thousands):

	March 31, 2018
	Originated			PNCI			PCI - Cash basis			PCI - Other			Total
Mortgage loans on real estate:
Residential 1-4 family	$	323,161		$	61,206		$	—		$	1,744		$	386,111
Commercial		1,754,062			211,168			—			8,038			1,973,268
Total mortgage loan on real estate		2,077,223			272,374			—			9,782			2,359,379
Consumer:
Home equity lines of credit		266,651			14,939			1,619			42			283,251
Home equity loans		38,889			2,558			—			485			41,932
Other		21,422			2,141			—			43			23,606
Total consumer loans		326,962			19,638			1,619			570			348,789
Commercial		205,673			7,837			—			2,505			216,015
Construction:
Residential		71,589			9			—			—			71,598
Commercial		73,701			251			—			—			73,952
Total construction		145,290			260			—			—			145,550
Total loans, net of deferred loan fees and discounts	$	2,755,148		$	300,109		$	1,619		$	12,857		$	3,069,733
Total principal balance of loans owed, net of charge-offs	$	2,764,819		$	306,924		$	5,167		$	16,654		$	3,093,564
Unamortized net deferred loan fees		(9,671	)		—			—			—			(9,671	)
Discounts to principal balance of loans owed, net of charge-offs		—			(6,815	)		(3,548	)		(3,797	)		(14,160	)
Total loans, net of unamortized deferred loan fees and discounts	$	2,755,148		$	300,109		$	1,619		$	12,857		$	3,069,733
Allowance for loan losses	$	(29,057	)	$	(748	)	$	(8	)	$	(160	)	$	(29,973	)
	December 31, 2017
	Originated			PNCI			PCI - Cash basis			PCI - Other			Total
Mortgage loans on real estate:
Residential 1-4 family	$	320,522		$	63,519		$	—		$	1,385		$	385,426
Commercial		1,690,510			215,823			—			8,563			1,914,896
Total mortgage loan on real estate		2,011,032			279,342			—			9,948			2,300,322
Consumer:
Home equity lines of credit		269,942			16,248			2,069			429			288,688
Home equity loans		39,848			2,698			—			485			43,031
Other		22,859			2,251			—			45			25,155
Total consumer loans		332,649			21,197			2,069			959			356,874
Commercial		209,437			8,391			—			2,584			220,412
Construction:
Residential		67,920			10			—			—			67,930
Commercial		69,364			263			—			—			69,627
Total construction		137,284			273			—			—			137,557
Total loans, net of deferred loan fees and discounts	$	2,690,402		$	309,203		$	2,069		$	13,491		$	3,015,165
Total principal balance of loans owed, net of charge-offs	$	2,699,053		$	316,238		$	5,863		$	17,318		$	3,038,472
Unamortized net deferred loan fees		(8,651	)		—			—			—			(8,651	)
Discounts to principal balance of loans owed, net of charge-offs		—			(7,035	)		(3,794	)		(3,827	)		(14,656	)
Total loans, net of unamortized deferred loan fees and discounts	$	2,690,402		$	309,203		$	2,069		$	13,491		$	3,015,165
Allowance for loan losses	$	(29,122	)	$	(929	)	$	(17	)	$	(255	)	$	(30,323	)

Change in Accretable Yield for PCI

The following is a summary of the change in accretable yield for PCI – other loans during the periods indicated (in thousands):

	Three months ended March 31,
	2018			2017
Change in accretable yield:
Balance at beginning of period	$	4,262		$	10,348
Accretion to interest income		(255	)		(902	)
Reclassification (to) from nonaccretable difference		140			114
Balance at end of period	$	4,147		$	9,560

XML

Allowance for Loan Losses (Tables)

3 Months Ended

Mar. 31, 2018

Receivables [Abstract]

Summary of Activity in Allowance for Loan Losses, and Ending Balance of Loans, Net of Unearned Fees for Periods Indicated

The following tables summarize the activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.

	Allowance for Loan Losses – Three Months Ended March 31, 2018
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Beginning balance	$	2,317		$	11,441		$	5,800		$	1,841		$	586		$	6,512		$	1,184		$	642		$	30,323
Charge-offs		(1	)		—			(80	)		—			(194	)		(205	)		—			—			(480	)
Recoveries		—			15			209			14			78			50			—			—			366
(Benefit) provision		(146	)		39			(517	)		(119	)		100			35			167			205			(236	)
Ending balance	$	2,170		$	11,495		$	5,412		$	1,736		$	570		$	6,392		$	1,351		$	847		$	29,973
Ending balance:
Individ. evaluated for impairment	$	190		$	154		$	448		$	130		$	56		$	2,113			—			—		$	3,091
Loans pooled for evaluation	$	1,910		$	11,281		$	4,956		$	1,606		$	514		$	4,249		$	1,351		$	847		$	26,714
Loans acquired with deteriorated credit quality	$	70		$	60		$	8			—			—		$	30			—			—		$	168
	Loans, net of unearned fees – As of March 31, 2018
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	386,111		$	1,973,268		$	283,251		$	41,932		$	23,606		$	216,015		$	71,598		$	73,952		$	3,069,733
Individ. evaluated for impairment	$	5,535		$	11,110		$	2,450		$	1,673		$	278		$	4,621		$	136			—		$	25,803
Loans pooled for evaluation	$	378,832		$	1,954,120		$	279,140		$	39,774		$	23,285		$	208,889		$	71,462		$	73,952		$	3,029,454
Loans acquired with deteriorated credit quality	$	1,744		$	8,038		$	1,661		$	485		$	43		$	2,505			—			—		$	14,476
	Allowance for Loan Losses—Year Ended December 31, 2017
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Beginning balance	$	2,748		$	11,517		$	7,044		$	2,644		$	622		$	5,831		$	1,417		$	680		$	32,503
Charge-offs		(60	)		(186	)		(98	)		(332	)		(1,186	)		(1,444	)		(1,104	)		—			(4,410	)
Recoveries		—			397			698			242			375			428			—			1			2,141
(Benefit) provision		(371	)		(287	)		(1,844	)		(713	)		775			1,697			871			(39	)		89
Ending balance	$	2,317		$	11,441		$	5,800		$	1,841		$	586		$	6,512		$	1,184		$	642		$	30,323
Ending balance:
Individ. evaluated for impairment	$	230		$	30		$	427		$	107		$	57		$	1,848			—			—		$	2,699
Loans pooled for evaluation	$	1,932		$	11,351		$	5,356		$	1,734		$	529		$	4,624		$	1,184		$	642		$	27,352
Loans acquired with deteriorated credit quality	$	155		$	60		$	17			—			—		$	40			—			—		$	272
	Loans, net of unearned fees – As of December 31, 2017
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	385,426		$	1,914,896		$	288,688		$	43,031		$	25,155		$	220,412		$	67,930		$	69,627		$	3,015,165
Individ. evaluated for impairment	$	5,298		$	13,911		$	2,688		$	1,470		$	257		$	4,470		$	140			—		$	28,234
Loans pooled for evaluation	$	378,743		$	1,892,422		$	283,502		$	41,076		$	24,853		$	213,358		$	67,790		$	69,627		$	2,971,371
Loans acquired with deteriorated credit quality	$	1,385		$	8,563		$	2,498		$	485		$	45		$	2,584			—			—		$	15,560
	Allowance for Loan Losses – Three Months Ended March 31, 2017
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Beginning balance	$	2,748		$	11,517		$	7,044		$	2,644		$	622		$	5,831		$	1,417		$	680		$	32,503
Charge-offs		—			—			(71	)		(31	)		(174	)		(133	)		—			—			(409	)
Recoveries		—			110			46			12			141			170			—			1			480
(Benefit) provision		(86	)		(85	)		(489	)		(174	)		6			(542	)		(78	)		(109	)		(1,557	)
Ending balance	$	2,662		$	11,542		$	6,530		$	2,451		$	595		$	5,326		$	1,339		$	572		$	31,017
Ending balance:
Individ. evaluated for impairment	$	249		$	124		$	400		$	57		$	31		$	811		$	14			—		$	1,686
Loans pooled for evaluation	$	2,188		$	9,971		$	6,122		$	2,328		$	564		$	3,873		$	1,282		$	572		$	26,900
Loans acquired with deteriorated credit quality	$	225		$	1,447		$	8		$	66			—		$	642		$	43			—		$	2,431
	Loans, net of unearned fees – As of March 31, 2017
	RE Mortgage						Home Equity						Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Consum.			C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	309,701		$	1,761,114		$	283,596		$	40,241		$	29,313		$	212,685		$	59,699		$	64,843		$	2,761,192
Individ. evaluated for impairment	$	3,849		$	16,979		$	2,204		$	1,241		$	280		$	3,072		$	25			—		$	27,650
Loans pooled for evaluation	$	304,493		$	1,731,785		$	277,388		$	37,867		$	28,967		$	205,832		$	58,830		$	64,843		$	2,710,005
Loans acquired with deteriorated credit quality	$	1,359		$	12,350		$	4,004		$	1,133		$	66		$	3,781		$	844			—		$	23,537

Presentation of Credit Quality Indicators

The following tables present ending loan balances by loan category and risk grade for the periods indicated:

	Credit Quality Indicators – As of March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
Originated loans:
Pass	$	317,799	$	1,716,599	$	263,270	$	35,730	$	21,067	$	193,829	$	71,482	$	68,846	$	2,688,622
Special mention		2,274		23,679		1,628		1,532		238		7,263		—		4,855		41,469
Substandard		3,088		13,784		1,753		1,627		117		4,581		107		—		25,057
Loss		—		—		—		—		—		—		—		—		—
Total originated	$	323,161	$	1,754,062	$	266,651	$	38,889	$	21,422	$	205,673	$	71,589	$	73,701	$	2,755,148
PNCI loans:
Pass	$	59,184	$	201,641	$	13,686	$	2,301	$	2,067	$	7,837	$	9	$	251	$	286,976
Special mention		214		8,977		282		184		37		—		—		—		9,694
Substandard		1,808		550		971		73		37		—		—		—		3,439
Loss		—		—		—		—		—		—		—		—		—
Total PNCI	$	61,206	$	211,168	$	14,939	$	2,558	$	2,141	$	7,837	$	9	$	251	$	300,109
PCI loans	$	1,744	$	8,038	$	1,661	$	485	$	43	$	2,505		—		—	$	14,476
Total loans	$	386,111	$	1,973,268	$	283,251	$	41,932	$	23,606	$	216,015	$	71,598	$	73,952	$	3,069,733
	Credit Quality Indicators – As of December 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
Originated loans:
Pass	$	315,120	$	1,649,333	$	265,345	$	37,428	$	22,432	$	195,208	$	67,813	$	64,492	$	2,617,171
Special mention		2,234		18,434		2,558		800		272		9,492		—		4,872		38,662
Substandard		3,168		22,743		2,039		1,620		155		4,737		107		—		34,569
Loss		—		—		—		—		—		—		—		—		—
Total originated	$	320,522	$	1,690,510	$	269,942	$	39,848	$	22,859	$	209,437	$	67,920	$	69,364	$	2,690,402
PNCI loans:
Pass	$	61,411	$	203,751	$	14,866	$	2,433	$	2,207	$	8,390	$	10	$	263	$	293,331
Special mention		218		11,513		450		188		38		1		—		—		12,408
Substandard		1,890		559		932		77		6		—		—		—		3,464
Loss		—		—		—		—		—		—		—		—		—
Total PNCI	$	63,519	$	215,823	$	16,248	$	2,698	$	2,251	$	8,391	$	10	$	263	$	309,203
PCI loans	$	1,385	$	8,563	$	2,498	$	485	$	45	$	2,584		—		—	$	15,560
Total loans	$	385,426	$	1,914,896	$	288,688	$	43,031		25,155	$	220,412	$	67,930	$	69,627	$	3,015,165

Analysis of Past Due and Nonaccrual Loans

The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual Originated Loans – As of March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
Originated loan balance:
Past due:
30-59 Days	$	2,217	$	5,531	$	938	$	1,490	$	63	$	915	$	298	$	—	$	11,452
60-89 Days		—		—		26		18		18		534		—		1,249		1,845
> 90 Days		846		1,162		320		154		—		1,557		—		—		4,039
Total past due		3,063		6,693		1,284		1,662		81		3,006		298		1,249		17,336
Current		320,098		1,747,369		265,367		37,227		21,341		202,667		71,291		72,452		2,737,812
Total originated loans	$	323,161	$	1,754,062	$	266,651	$	38,889	$	21,422	$	205,673	$	71,589	$	73,701	$	2,755,148
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	2,235	$	7,925	$	733	$	1,193	$	4	$	3,990		—		—	$	16,080

The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual PNCI Loans – As of March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
PNCI loan balance:
Past due:
30-59 Days	$	2,537		—	$	362	$	2		—	$	1		—		—	$	2,902
60-89 Days		—		—		—		—		4		—		—		—		4
> 90 Days		—		—		146		—		28		—		—		—		174
Total past due		2,537		—		508		2		32		1		—		—		3,080
Current		58,669		211,168		14,431		2,556		2,109		7,836		9		251		297,029
Total PNCI loans	$	61,206	$	211,168	$	14,939	$	2,558	$	2,141	$	7,837	$	9	$	251	$	300,109
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	1,067		—	$	571	$	40	$	33		—		—		—	$	1,711

The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual Originated Loans – As of December 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
Originated loan balance:
Past due:
30-59 Days	$	1,740	$	158	$	528	$	511	$	56	$	956	$	34		—	$	3,983
60-89 Days		510		987		48		107		36		738		—		—		2,426
> 90 Days		243		—		372		373		3		1,527		—		—		2,518
Total past due	$	2,493	$	1,145	$	948	$	991	$	95	$	3,221	$	34		—	$	8,927
Current		318,029		1,689,365		268,994		38,857		22,764		206,216		67,886	$	69,364		2,681,475
Total originated loans	$	320,522	$	1,690,510	$	269,942	$	39,848	$	22,859	$	209,437	$	67,920	$	69,364	$	2,690,402
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	1,725	$	8,144	$	811	$	1,106	$	7	$	3,669		—		—	$	15,462

The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual PNCI Loans – As of December 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
PNCI loan balance:
Past due:
30-59 Days	$	1,495	$	70	$	298	$	30	$	6		—		—		—	$	1,899
60-89 Days		90		—		228		—		26		—		—		—		344
> 90 Days		109		—		330		—		—		—		—		—		439
Total past due	$	1,694	$	70	$	856	$	30	$	32		—		—		—	$	2,682
Current		61,825		215,753		15,392		2,668		2,219	$	8,391	$	10	$	263		306,521
Total PNCI loans	$	63,519	$	215,823	$	16,248	$	2,698	$	2,251	$	8,391	$	10	$	263	$	309,203
> 90 Days and still accruing	$	81		—	$	200		—		—		—		—		—	$	281
Nonaccrual loans	$	1,012		—	$	402	$	44	$	5		—		—		—	$	1,463

Impaired Loans

Impaired originated loans are those where management has concluded that it is probable that the borrower will be unable to pay all amounts due under the original contractual terms. The following tables show the recorded investment (financial statement balance), unpaid principal balance, average recorded investment, and interest income recognized for impaired Originated and PNCI loans, segregated by those with no related allowance recorded and those with an allowance recorded for the periods indicated.

	Impaired Originated Loans – As of, or for the Three Months Ended, March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	2,678	$	9,848	$	888	$	1,193		—	$	881	$	136		—	$	15,624
Unpaid principal	$	2,829	$	10,126	$	944	$	1,548		—	$	894	$	136		—	$	16,477
Average recorded investment	$	2,368	$	11,474	$	991	$	1,150	$	2	$	728	$	138		—	$	16,851
Interest income recognized	$	19	$	35	$	6		—		—	$	9	$	2		—	$	71
With an allowance recorded:
Recorded investment	$	1,525	$	1,262	$	527	$	196	$	4	$	3,740		—		—	$	7,254
Unpaid principal	$	1,549	$	1,281	$	534	$	196	$	4	$	3,862		—		—	$	7,426
Related allowance	$	190	$	154	$	146	$	10	$	4	$	2,113		—		—	$	2,617
Average recorded investment	$	1,703	$	1,036	$	464	$	197	$	4	$	3,817		—		—	$	7,221
Interest income recognized	$	9	$	9	$	4	$	2		—	$	17		—		—	$	41
	Impaired PNCI Loans – As of, or for the Three Months Ended, March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	1,332		—	$	501	$	40	$	28		—		—		—	$	1,901
Unpaid principal	$	1,390		—	$	529	$	54	$	28		—		—		—	$	2,001
Average recorded investment	$	1,345		—	$	546	$	42	$	14		—		—		—	$	1,947
Interest income recognized	$	2		—	$	2				—		—		—		—	$	4
With an allowance recorded:
Recorded investment		—		—	$	534	$	244	$	246		—		—		—	$	1,024
Unpaid principal		—		—	$	536	$	244	$	246		—		—		—	$	1,026
Related allowance		—		—	$	302	$	120	$	52		—		—		—	$	474
Average recorded investment		—		—	$	568	$	183	$	248		—		—		—	$	999
Interest income recognized		—		—	$	3	$	3	$	2		—		—		—	$	8
	Impaired Originated Loans – As of, or for the Twelve Months Ended, December 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	2,058	$	13,101	$	1,093	$	1,107	$	4	$	575	$	140		—	$	18,078
Unpaid principal	$	2,109	$	13,360	$	1,175	$	1,429	$	52	$	585	$	140		—	$	18,850
Average recorded investment	$	1,875	$	13,123	$	1,287	$	852	$	10	$	668	$	76		—	$	17,891
Interest income recognized	$	85	$	609	$	39	$	14		—	$	18	$	9		—	$	774
With an allowance recorded:
Recorded investment	$	1,881	$	810	$	401	$	198	$	3	$	3,895		—		—	$	7,188
Unpaid principal	$	1,914	$	826	$	406	$	198	$	3	$	3,981		—		—	$	7,328
Related allowance	$	230	$	30	$	111	$	10	$	3	$	1,848		—		—	$	2,232
Average recorded investment	$	1,626	$	728	$	415	$	341	$	10	$	3,615		—		—	$	6,735
Interest income recognized	$	58	$	36	$	8	$	10		—	$	166		—		—	$	278
	Impaired PNCI Loans – As of, or for the Twelve Months Ended, December 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	1,359		—	$	591	$	44		—		—		—		—	$	1,994
Unpaid principal	$	1,404		—	$	612	$	57		—		—		—		—	$	2,073
Average recorded investment	$	911	$	913	$	663	$	56	$	2		—		—		—	$	2,545
Interest income recognized	$	24		—	$	22		—		—		—		—		—	$	46
With an allowance recorded:
Recorded investment		—		—	$	603	$	121	$	250		—		—		—	$	974
Unpaid principal		—		—	$	604	$	121	$	250		—		—		—	$	975
Related allowance		—		—	$	316	$	97	$	54		—		—		—	$	467
Average recorded investment	$	130	$	66	$	577	$	61	$	184		—		—		—	$	1,018
Interest income recognized		—		—	$	26	$	6	$	11		—		—		—	$	43

	Impaired Originated Loans – As of, or for the Three Months Ended, March 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	1,782	$	14,431	$	1,064	$	743	$	5	$	1,289	$	11		—	$	19,325
Unpaid principal	$	1,793	$	14,881	$	1,144	$	1,085	$	6	$	1,312	$	16		—	$	20,237
Average recorded investment	$	2,834	$	20,770	$	2,013	$	845	$	12	$	932	$	7		—	$	27,413
Interest income recognized	$	20	$	98	$	6	$	1		—	$	7		—		—	$	132
With an allowance recorded:
Recorded investment	$	1,378	$	640	$	427	$	440	$	21	$	1,783	$	14		—	$	4,703
Unpaid principal	$	1,382	$	640	$	440	$	443	$	22	$	1,842	$	14		—	$	4,783
Related allowance	$	172	$	18	$	106	$	57	$	14	$	811	$	14		—	$	1,192
Average recorded investment	$	1,692	$	1,029	$	1,076	$	557	$	11	$	1,938	$	7		—	$	6,310
Interest income recognized	$	11	$	9	$	1	$	5		—	$	14		—		—	$	40
	Impaired PNCI Loans – As of, or for the Three Months Ended, March 31, 2017
	RE Mortgage				Home Equity				Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	433	$	1,777	$	220	$	58	$	138		—		—		—	$	2,626
Unpaid principal	$	455	$	2,011	$	233	$	67	$	139		—		—		—	$	2,905
Average recorded investment	$	654	$	1,455	$	337	$	64	$	86	$	1		—	$	245	$	2,842
Interest income recognized	$	2		—	$	1		—	$	2		—		—		—	$	5
With an allowance recorded:
Recorded investment	$	256	$	131	$	493		—	$	116		—		—		—	$	996
Unpaid principal	$	256	$	131	$	493		—	$	116		—		—		—	$	996
Related allowance	$	77	$	106	$	295		—	$	16		—		—		—	$	494
Average recorded investment	$	128	$	1,440	$	550	$	19	$	175		—		—		—	$	2,312
Interest income recognized	$	2	$	2	$	5		—	$	1		—		—		—	$	10

Troubled Debt Restructurings

The following table shows certain information regarding TDRs that occurred during the period indicated:

	TDR Information for the Three Months Ended March 31, 2018
	RE Mortgage				Home Equity				Other				Construction
(dollars in thousands)	Resid.		Comm.		Lines		Loans		Consum.		C&I		Resid.		Comm.		Total
Number		—		1		1		1		—		—		—		—		3
Pre-mod outstanding principal balance		—	$	384	$	133	$	121		—		—		—		—	$	638
Post-mod outstanding principal balance		—	$	384	$	138	$	121		—		—		—		—	$	643
Financial impact due to TDR taken as additional provision		—	$	11		—		—		—		—		—		—	$	11
Number that defaulted during the period		—		1		—		—		—		—		—		—		1
Recorded investment of TDRs that defaulted during the period		—	$	169		—		—		—		—		—		—	$	169
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions		—		—		—		—		—		—		—		—		—

The following table shows certain information regarding TDRs that occurred during the period indicated:     

	TDR Information for the Year Ended December 31, 2017
	RE Mortgage					Home Equity					Other				Construction
(dollars in thousands)	Resid.		Comm.			Lines			Loans		Consum.		C&I		Resid.		Comm.		Total
Number		1		8			3			1		1		11		1		—		26
Pre-mod outstanding principal balance	$	939	$	3,721		$	187		$	252	$	14	$	1,854	$	144		—	$	7,111
Post-mod outstanding principal balance	$	939	$	3,695		$	187		$	252	$	14	$	1,747	$	144		—	$	6,978
Financial impact due to TDR taken as additional provision	$	169	$	(111	)	$	27			—	$	11	$	37		—		—	$	133
Number that defaulted during the period		2		1			1			1		—		—		—		—		5
Recorded investment of TDRs that defaulted during the period	$	223	$	219		$	127		$	55		—		—		—		—	$	624
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions		—		—		$	(5	)		—		—		—		—		—	$	(5	)

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Foreclosed Assets (Tables)

3 Months Ended

Mar. 31, 2018

Text Block [Abstract]

Summary of Activity in Balance of Foreclosed Assets

A summary of the activity in the balance of foreclosed assets follows (dollars in thousands):

	Three months ended March 31, 2018			Three months ended March 31, 2017
	Total			Noncovered			Covered			Total
Beginning balance, net	$	3,226		$	3,763		$	223		$	3,986
Additions/transfers from loans		—			85			—			85
Dispositions/sales		(1,572	)		(385	)		(223	)		(608	)
Valuation adjustments		(90	)		66			—			66
Ending balance, net	$	1,564		$	3,529			—		$	3,529
Ending valuation allowance	$	(152	)	$	(300	)		—		$	(300	)
Ending number of foreclosed assets		10			12			—			12
Proceeds from sale of foreclosed assets	$	1,943		$	510		$	216		$	726
Gain (loss) on sale of foreclosed assets	$	371		$	125		$	(7	)	$	118

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Premises and Equipment (Tables)

3 Months Ended

Mar. 31, 2018

Property, Plant and Equipment [Abstract]

Summary of Premises and Equipment

Premises and equipment were comprised of:

	March 31, 2018			December 31, 2017
	(In thousands)
Land & land improvements	$	9,959		$	9,959
Buildings		50,792			50,340
Furniture and equipment		37,348			35,939
		98,099			96,238
Less: Accumulated depreciation		(41,678	)		(40,644	)
		56,421			55,594
Construction in progress		2,137			2,148
Total premises and equipment	$	58,558		$	57,742

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Cash Value of Life Insurance (Tables)

3 Months Ended

Mar. 31, 2018

Investments, All Other Investments [Abstract]

Summary of Activity in Balance of Cash Value of Life Insurance

A summary of the activity in the balance of cash value of life insurance follows (dollars in thousands):

	Three months ended March 31,
	2018		2017
Beginning balance	$	97,783	$	95,912
Increase in cash value of life insurance		608		685
Gain on death benefit		—		107
Insurance proceeds receivable reclassified to other assets		—		(921	)
Ending balance	$	98,391	$	95,783
End of period death benefit	$	159,640	$	164,574
Number of policies owned		182		183
Insurance companies used		14		14
Current and former employees and directors covered		57		58

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Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Goodwill Intangible

The following table summarizes the Company’s goodwill intangible as of the dates indicated:

(in thousands)	March 31, 2018		Additions		Reductions		December 31, 2017
Goodwill	$	64,311		—		—	$	64,311

Summary of Core Deposit Intangibles

The following table summarizes the Company’s core deposit intangibles as of the dates indicated:

(in thousands)	March 31, 2018			Additions		Reductions/ Amortization			December 31, 2017
Core deposit intangibles	$	9,558			—		—		$	9,558
Accumulated amortization		(4,723	)		—	$	(339	)		(4,384	)
Core deposit intangibles, net	$	4,835			—	$	(339	)	$	5,174

Remaining Estimated Core Deposit Intangible Amortization

The following table summarizes the Company’s remaining estimated core deposit intangible amortization (in thousands):

Years Ended	Estimated Core Deposit Intangible Amortization
2018	$	1,324
2019		1,228
2020		1,228
2021		969
2022		280
Thereafter		145

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Mortgage Servicing Rights (Tables)

3 Months Ended

Mar. 31, 2018

Text Block [Abstract]

Fair Value of Mortgage Servicing Rights

The following tables summarize the activity in, and the main assumptions used to determine the fair value of mortgage servicing rights (“MSRs”) for the periods indicated (dollars in thousands):

	Three months ended March 31,
	2018			2017
Balance at beginning of period	$	6,687		$	6,595
Additions		155			278
Change in fair value		111			(13	)
Balance at end of period	$	6,953		$	6,860
Contractually specified servicing fees, late fees and ancillary fees earned	$	517		$	521
Balance of loans serviced at:
Beginning of period	$	811,065		$	816,623
End of period	$	806,478		$	822,506
Weighted-average prepayment speed (CPR)		7.5	%		8.3	%
Weighted-average discount rate		13.0	%		14.0	%

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Indemnification Asset (Tables)

3 Months Ended

Mar. 31, 2018

Text Block [Abstract]

Summary of Activity in Balance of Indemnification Asset

A summary of the activity in the balance of indemnification asset follows (in thousands):

	Three months ended March 31,
	2018		2017
Beginning balance		—	$	(744	)
Effect of actual and estimated future covered losses and recoveries		—		(191	)
Reimbursable (revenue) expenses incurred		—		(32	)
Payments made to (received from) FDIC		—		72
Ending balance		—	$	(895	)
Amount of indemnification liability recorded in other assets		—	$	(179	)
Amount of indemnification liability recorded in other liabilities		—		(716	)
Ending balance		—	$	(895	)

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Other Assets (Tables)

3 Months Ended

Mar. 31, 2018

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Summary of Other Assets

Other assets were comprised of (in thousands):

	March 31, 2018		December 31, 2017
Deferred tax asset, net	$	26,266	$	21,697
Investment in low income housing tax credit funds		17,095		16,854
Prepaid expense		4,411		4,111
Tax refund receivable		4,754		4,754
Capital trusts		1,709		1,706
Software		883		1,126
Life insurance proceeds receivable		—		2,242
Miscellaneous other assets		1,156		2,561
Total other assets	$	56,274	$	55,051

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Deposits (Tables)

3 Months Ended

Mar. 31, 2018

Banking and Thrift [Abstract]

Summary of Balances of Deposits

A summary of the balances of deposits follows (in thousands):

	March 31, 2018		December 31, 2017
Noninterest-bearing demand	$	1,359,996	$	1,368,218
Interest-bearing demand		1,022,299		971,459
Savings		1,395,481		1,364,518
Time certificates, over $250,000		76,306		73,596
Other time certificates		230,322		231,340
Total deposits	$	4,084,404	$	4,009,131

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Reserve for Unfunded Commitments (Tables)

3 Months Ended

Mar. 31, 2018

Text Block [Abstract]

Summary of Activity in Reserve for Unfunded Commitments

The following tables summarize the activity in reserve for unfunded commitments for the periods indicated (in thousands):

	Three months ended March 31,
	2018		2017
Balance at beginning of period	$	3,164	$	2,719
Provision for losses – unfunded commitments		700		15
Balance at end of period	$	3,864	$	2,734

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Other Liabilities (Tables)

3 Months Ended

Mar. 31, 2018

Other Liabilities Disclosure [Abstract]

Components of Other Liabilities

Other liabilities were comprised of (in thousands):

	March 31, 2018		December 31, 2017
Pension liability	$	28,686	$	28,472
Low income housing tax credit fund commitments		7,677		8,554
Deferred compensation		6,809		6,605
Taxes payable		5,243		—
Accrued salaries and benefits expense		5,180		6,619
Joint beneficiary agreements		3,429		3,365
Loan escrow and servicing payable		1,464		1,958
Deferred revenue		1,077		1,228
Litigation contingency		—		1,450
Miscellaneous other liabilities		3,964		5,007
Total other liabilities	$	63,529	$	63,258

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Other Borrowings (Tables)

3 Months Ended

Mar. 31, 2018

Text Block [Abstract]

Summary of Balances of Other Borrowings

A summary of the balances of other borrowings follows:

	March 31, 2018		December 31, 2017
	(in thousands)
FHLB collateralized borrowing, fixed rate, as of March 31, 2018 of 1.87%, payable on April 2, 2018	$	48,000
FHLB collateralized borrowing, fixed rate, as of December 31, 2017 of 1.38%, payable on January 2, 2018			$	104,729
Other collateralized borrowings, fixed rate, as of March 31, 2018 and December 31, 2017 of 0.05%, payable on April 2, 2018 and January 2, 2018, respectively		17,041		17,437
Total other borrowings	$	65,041	$	122,166

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Junior Subordinated Debt (Tables)

3 Months Ended

Mar. 31, 2018

Text Block [Abstract]

Summary of Terms and Recorded Balance of Subordinated Debenture

The following table summarizes the terms and recorded balance of each subordinated debenture as of the date indicated (dollars in thousands):

Subordinated Debt Series					Coupon Rate			As of March 31, 2018					December 31, 2017
	Maturity		Face		(Variable)			Current			Recorded		Recorded
	Date		Value		3 mo. LIBOR +			Coupon Rate			Book Value		Book Value
TriCo Cap Trust I		10/7/2033	$	20,619		3.05	%		4.77	%	$	20,619	$	20,619
TriCo Cap Trust II		7/23/2034		20,619		2.55	%		4.29	%		20,619		20,619
North Valley Trust II		4/24/2033		6,186		3.25	%		5.02	%		5,145		5,135
North Valley Trust III		4/24/2034		5,155		2.80	%		4.54	%		4,050		4,041
North Valley Trust IV		3/15/2036		10,310		1.33	%		3.45	%		6,472		6,444
			$	62,889							$	56,905	$	56,858

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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Commitments under Non-Cancelable Operating Leases with Initial or Remaining Terms of One Year or More

At December 31, 2017, future minimum commitments under non-cancelable operating leases with initial or remaining terms of one year or more are as follows:

	Operating Leases
	(in thousands)
2018	$	3,278
2019		2,499
2020		1,847
2021		1,488
2022		757
Thereafter		798
Future minimum lease payments	$	10,667

Summary of Company's Commitments and Contingent Liabilities

The following table presents a summary of the Company’s commitments and contingent liabilities:

(in thousands)	March 31, 2018		December 31, 2017
Financial instruments whose amounts represent risk:
Commitments to extend credit:
Commercial loans	$	253,001	$	257,220
Consumer loans		437,790		422,958
Real estate mortgage loans		73,618		66,267
Real estate construction loans		236,650		187,097
Standby letters of credit		11,573		13,075
Deposit account overdraft privilege		101,411		98,260

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Stock Options and Other Equity-Based Incentive Instruments (Tables)

3 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Option Activity

Stock option activity during the three months ended March 31, 2018 is summarized in the following table:

	Number of Shares		Option Price per Share		Weighted Average Exercise Price		Value on Date of Grant	Weighted Average Fair Value
Outstanding at December 31, 2017		446,400	$	12.63 to $23.21	$	16.84
Options granted		—		— to —		—
Options exercised		—		— to —		—
Options forfeited		—		— to —		—
Outstanding at March 31, 2018		446,400	$	12.63 to $23.21	$	16.84

Summary of Options Outstanding

The following table shows the number, weighted-average exercise price, intrinsic value, and weighted average remaining contractual life of options exercisable, options not yet exercisable and total options outstanding as of March 31, 2018:

	Currently		Currently Not		Total
	Exercisable		Exercisable		Outstanding
Number of options		423,600		22,800		446,400
Weighted average exercise price	$	16.65	$	20.45	$	16.84
Intrinsic value (in thousands)	$	8,713	$	382	$	9,096
Weighted average remaining contractual term (yrs.)		3.6		5.5		3.7

Restricted Stock Unit (RSU) Activity

Restricted stock unit (RSU) activity is summarized in the following table for the dates indicated:

	Service Condition Vesting RSUs				Market Plus Service Condition Vesting RSUs
	Number of RSUs			Weighted Average Fair Value on Date of Grant	Number of RSUs		Weighted Average Fair Value on Date of Grant
Outstanding at December 31, 2017		68,457				52,829
RSUs granted		—				—
RSUs added through dividend credits		310				—
RSUs released		(494	)			—
RSUs forfeited/expired		—				—
Outstanding at March 31, 2018		68,273				52,829

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Noninterest Income and Expense (Tables)

3 Months Ended

Mar. 31, 2018

Other Income and Expenses [Abstract]

Components of Other Noninterest Income

The components of other noninterest income were as follows (in thousands):

	Three months ended March 31,
	2018			2017
Service charges on deposit accounts	$	3,779		$	3,619
ATM and interchange fees		4,235			4,015
Other service fees		714			765
Mortgage banking service fees		517			521
Change in value of mortgage servicing rights		111			(13	)
Total service charges and fees		9,356			8,907
Commissions on sale of non-deposit investment products		876			607
Gain on sale of loans		626			910
Increase in cash value of life insurance		608			685
Gain on sale of foreclosed assets		371			118
Lease brokerage income		128			206
Sale of customer checks		101			104
Change in indemnification asset		—			(221	)
Life insurance proceeds in excess of cash value		—			107
Loss on disposal of fixed assets		(13	)		—
Loss on marketable equity securities		(47	)		—
Other		284			280
Total other noninterest income		2,934			2,796
Total noninterest income	$	12,290		$	11,703

Components of Noninterest Expense

The components of noninterest expense were as follows (in thousands):

	Three months ended March 31,
	2018		2017
Base salaries, net of deferred loan origination costs	$	13,962	$	13,390
Incentive compensation		2,452		2,198
Benefits and other compensation costs		5,238		5,305
Total salaries and benefits expense		21,652		20,893
Occupancy		2,681		2,692
Data processing and software		2,514		2,396
Equipment		1,551		1,723
ATM and POS network charges		1,226		853
Advertising		838		967
Professional fees		773		766
Telecommunications		701		643
Change in reserve for unfunded commitments		700		15
Merger and acquisition expense		476		—
Assessments		430		405
Postage		358		404
Intangible amortization		339		359
Operational losses		294		435
Courier service		267		254
Provision for (reversal of) foreclosed asset losses		90		(66	)
Foreclosed assets expense		24		38
Other miscellaneous expense		3,248		3,045
Total other noninterest expense		16,510		14,929
Total noninterest expense	$	38,162	$	35,822
Merger and acquisition expense:
Professional fees	$	355		—
Advertising and marketing		8		—
Other miscellaneous expense		112		—
Total merger and acquisition expense	$	476		—

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Income Taxes (Tables)

3 Months Ended

Mar. 31, 2018

Income Tax Disclosure [Abstract]

Reconciliation of Effective Tax Rate and Statutory Federal Income Tax Rate

The effective tax rate and the statutory federal income tax rate are reconciled for the periods indicated as follows:

	Three months ended March 31,
	2018			2017
Federal statutory income tax rate		21.0	%		35.0	%
State income taxes, net of federal tax benefit		9.0			6.9
Tax-exempt interest on municipal obligations		(1.1	)		(1.9	)
Increase in cash value of insurance policies		(0.7	)		(1.4	)
Low income housing tax credits		(1.0	)		(0.6	)
Equity compensation		—			(0.5	)
Nondeductible merger expenses		0.4			—
Nondeductible joint beneficiary agreement expense		0.1			0.1
Other		0.4			0.2
Effective Tax Rate		28.1	%		37.8	%

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Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Computation of Earnings Per Share

Earnings per share have been computed based on the following:

	Three months ended March 31,
(in thousands)	2018		2017
Net income	$	13,910	$	12,079
Average number of common shares outstanding		22,956		22,870
Effect of dilutive stock options and restricted stock		327		362
Average number of common shares outstanding used to calculate diluted earnings per share		23,283		23,232
Options excluded from diluted earnings per share because the effect of these options was antidilutive		—		—

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Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Components of Other Comprehensive Income and Related Tax Effects

The components of other comprehensive income and related tax effects are as follows:

	Three months ended March 31,
(in thousands)	2018			2017
Unrealized holding gains (losses) on available for sale securities before reclassifications	$	(15,265	)	$	787
Amounts reclassified out of accumulated other comprehensive income:
Adoption ASU 2016-01		62			—
Adoption ASU 2018-02		(425	)		—
Total amounts reclassified out of accumulated other comprehensive income		(363	)		—
Unrealized holding gains (losses) on available for sale securities after reclassifications		(15,628	)		787
Tax effect		4,602			(330	)
Unrealized holding gains (losses) on available for sale securities, net of tax		(11,026	)		457
Change in unfunded status of the supplemental retirement plans before reclassifications		667			—
Amounts reclassified out of accumulated other comprehensive income:
Amortization of prior service cost		(13	)		(3	)
Amortization of actuarial losses		127			96
Adoption ASU 2018-02		(668	)		—
Total amounts reclassified out of accumulated other comprehensive income		(554	)		93
Change in unfunded status of the supplemental retirement plans after reclassifications		113			93
Tax effect		(33	)		(39	)
Change in unfunded status of the supplemental retirement plans, net of tax		80			54
Change in joint beneficiary agreement liability before reclassifications		—			—
Amounts reclassified out of accumulated other comprehensive income		—			—
Change in joint beneficiary agreement liability after reclassifications		—			—
Tax effect		—			—
Change in joint beneficiary agreement liability, net of tax		—			—
Total other comprehensive income (loss)	$	(10,946	)	$	511

Components of Accumulated Other Comprehensive Income

The components of accumulated other comprehensive income, included in shareholders’ equity, are as follows:

	Three months ended March 31,
(in thousands)	2018			2017
Net unrealized loss on available for sale securities	$	(18,975	)	$	(8,083	)
Tax effect		5,610			3,399
Unrealized holding loss on available for sale securities, net of tax		(13,365	)		(4,684	)
Unfunded status of the supplemental retirement plans		(5,238	)		(4,621	)
Tax effect		1,549			1,943
Unfunded status of the supplemental retirement plans, net of tax		(3,689	)		(2,678	)
Joint beneficiary agreement liability		(151	)		(40	)
Tax effect		—			—
Joint beneficiary agreement liability, net of tax		(151	)		(40	)
Accumulated other comprehensive loss	$	(17,205	)	$	(7,402	)

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Retirement Plans (Tables)

3 Months Ended

Mar. 31, 2018

Retirement Benefits [Abstract]

Net Periodic Benefit Cost Recognized for Supplemental Retirement Plans

The following table sets forth the net periodic benefit cost recognized for the plans:

	Three months ended March 31,
	2018			2017
(in thousands)
Net pension cost included the following components:
Service cost-benefits earned during the period	$	243		$	235
Interest cost on projected benefit obligation		237			249
Amortization of net obligation at transition		1			1
Amortization of prior service cost		(13	)		(3	)
Recognized net actuarial loss		127			96
Net periodic pension cost	$	595		$	578

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Related Party Transactions (Tables)

3 Months Ended

Mar. 31, 2018

Related Party Transactions [Abstract]

Summary of Activity in Lending Transactions

The following table summarizes the activity in these loans for periods indicated (in thousands):

Balance December 31, 2016	$	2,432
Advances/new loans		437
Removed/payments		(721	)
Balance December 31, 2017		2,148
Advances/new loans		145
Removed/payments		(314	)
Balance March 31, 2018	$	1,979

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Fair Value Measurement (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Recorded Amount of Assets and Liabilities Measured at Fair Value on Recurring Basis

The table below presents the recorded amount of assets and liabilities measured at fair value on a recurring basis (in thousands):

Fair value at March 31, 2018	Total		Level 1		Level 2		Level 3
Marketable equity securities	$	2,890	$	2,890	$	—	$	—
Debt securities available for sale:
Obligations of U.S. government corporations and agencies		616,657		—		616,657		—
Obligations of states and political subdivisions		119,238		—		119,238		—
Mortgage servicing rights		6,953		—		—		6,953
Total assets measured at fair value	$	745,738	$	2,890	$	735,895	$	6,953
Fair value at December 31, 2017	Total		Level 1		Level 2		Level 3
Marketable equity securities	$	2,938	$	2,938	$	—	$	—
Debt securities available for sale:
Obligations of U.S. government corporations and agencies		604,789		—		604,789		—
Obligations of states and political subdivisions		123,156		—		123,156		—
Mortgage servicing rights		6,687		—		—		6,687
Total assets measured at fair value	$	737,570	$	2,938	$	727,945	$	6,687

Reconciliation of Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3) on Recurring Basis

The following table provides a reconciliation of assets and liabilities measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the time periods indicated. Had there been any transfer into or out of Level 3 during the time periods indicated, the amount included in the “Transfers into (out of) Level 3” column would represent the beginning balance of an item in the period (interim quarter) during which it was transferred (in thousands):

Three months ended March 31,	Beginning Balance		Transfers into (out of) Level 3		Change Included in Earnings			Issuances		Ending Balance
2018: Mortgage servicing rights	$	6,687		—	$	111		$	155	$	6,953
2017: Mortgage servicing rights	$	6,595		—	$	(13	)	$	278	$	6,860

Quantitative Information about Recurring Level 3 Fair Value Measurements

The following table presents quantitative information about recurring Level 3 fair value measurements at March 31, 2018:

	Fair Value (in thousands)		Valuation Technique	Unobservable Inputs	Range, Weighted Average
Mortgage Servicing Rights	$	6,953	Discounted cash flow	Constant prepayment rate		6.0%-19.7%, 7.5	%
				Discount rate		11.0%-15.0%, 13.0%

The following table presents quantitative information about recurring Level 3 fair value measurements at December 31, 2017:

	Fair Value (in thousands)		Valuation Technique	Unobservable Inputs	Range, Weighted Average
Mortgage Servicing Rights	$	6,687	Discounted cash flow	Constant prepayment rate		6.2%-22.0%, 8.9	%

Assets and Liabilities Measured at Fair Value on Nonrecurring Basis

The tables below present the recorded investment in assets and liabilities measured at fair value on a nonrecurring basis, as of the dates indicated (in thousands):

Three months ended March 31, 2018	Total		Level 1		Level 2		Level 3		Total Gains (Losses)
Fair value:
Impaired Originated & PNCI loans	$	2,103		—		—	$	2,103	$	(795	)
Foreclosed assets		774		—		—		774		(87	)
Total assets measured at fair value	$	2,877		—		—	$	2,877	$	(882	)
Year ended December 31, 2017	Total		Level 1		Level 2		Level 3		Total Gains (Losses)
Fair value:
Impaired Originated & PNCI loans	$	2,767		—		—	$	2,767	$	(1,452	)
Foreclosed assets		2,217		—		—		2,217		(135	)
Total assets measured at fair value	$	4,984		—		—	$	4,984	$	(1,587	)
Three months ended March 31, 2017	Total		Level 1		Level 2		Level 3		Total Gains (Losses)
Fair value:
Impaired Originated & PNCI loans	$	824		—		—	$	824	$	30
Foreclosed assets		1,528		—		—		1,528		(22	)
Total assets measured at fair value	$	2,352		—		—	$	2,352	$	8

Quantitative Information about Level 3 Fair Value Measurements for Financial Instruments Measured at Fair Value on Nonrecurring Basis

The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at March 31, 2018:

March 31, 2018	Fair Value (in thousands)		Valuation Technique	Unobservable Inputs	Range, Weighted Average
Impaired Originated & PNCI loans	$	2,103	Sales comparison approach Income approach	Adjustment for differences between comparable sales Capitalization rate	Not meaningful N/A
Foreclosed assets (Land & construction)	$	190	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful
Foreclosed assets (Residential real estate)	$	492	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful
Foreclosed assets (Commercial real estate)	$	92	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful

The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at December 31, 2017:

December 31, 2017	Fair Value (in thousands)		Valuation Technique	Unobservable Inputs	Range, Weighted Average
Impaired Originated & PNCI loans	$	2,767	Sales comparison approach Income approach	Adjustment for differences between comparable sales Capitalization rate	Not meaningful N/A
Foreclosed assets (Land & construction)	$	1,341	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful
Foreclosed assets (Residential real estate)	$	622	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful
Foreclosed assets (Commercial real estate)	$	254	Sales comparison approach	Adjustment for differences between comparable sales	Not meaningful

Estimated Fair Values of Financial Instruments that are Reported at Amortized Cost in Consolidated Balance Sheets

The estimated fair values of financial instruments that are reported at amortized cost in the Company’s consolidated balance sheets, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value, were as follows (in thousands):

	March 31, 2018				December 31, 2017
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial assets:
Level 1 inputs:
Cash and due from banks	$	87,138	$	87,138	$	105,968	$	105,968
Cash at Federal Reserve and other banks		95,841		95,841		99,460		99,460
Level 2 inputs:
Securities held to maturity		496,035		488,639		514,844		518,165
Restricted equity securities		16,956		N/A		16,956		N/A
Loans held for sale		2,149		2,149		4,616		4,616
Level 3 inputs:
Loans, net		3,039,760		3,025,636		2,984,842		2,992,225
Financial liabilities:
Level 2 inputs:
Deposits		4,084,404		4,081,089		4,009,131		4,006,620
Other borrowings		65,041		65,041		122,166		122,166
Level 3 inputs:
Junior subordinated debt		56,905		59,982		56,858		58,466
	Contract Amount		Fair Value		Contract Amount		Fair Value
Off-balance sheet:
Level 3 inputs:
Commitments	$	1,001,059	$	10,011	$	933,542	$	9,335
Standby letters of credit		11,573		116		13,075		131
Overdraft privilege commitments		101,411		1,014		98,260		983

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TriCo Bancshares Condensed Financial Statements (Parent Only) (Tables)

3 Months Ended

Mar. 31, 2018

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Condensed Balance Sheets

Condensed Balance Sheets

	March 31, 2018			December 31, 2017
	(In thousands)
Assets
Cash and cash equivalents	$	3,516		$	3,924
Investment in Tri Counties Bank		557,380			557,538
Other assets		1,758			1,721
Total assets	$	562,654		$	563,183
Liabilities and shareholders’ equity
Other liabilities	$	493		$	517
Junior subordinated debt		56,905			56,858
Total liabilities		57,398			57,375
Shareholders’ equity:
Preferred stock, no par value: 1,000,000 shares authorized, zero issued and outstanding at March 31, 2018 and December 31, 2017		—			—
Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 22,956,323 and 22,955,963 shares, respectively		256,226			255,836
Retained earnings		266,235			255,200
Accumulated other comprehensive loss, net		(17,205	)		(5,228	)
Total shareholders’ equity		505,256			505,808
Total liabilities and shareholders’ equity	$	562,654		$	563,183

Condensed Statements of Income

Condensed Statements of Income
	Three months ended March 31,
	2018			2017
	(In thousands)
Interest expense	$	(697	)	$	(595	)
Administration expense		(426	)		(159	)
Loss before equity in net income of Tri Counties Bank		(1,123	)		(754	)
Equity in net income of Tri Counties Bank:
Distributed		4,372			4,042
Undistributed		10,397			8,474
Income tax benefit		264			317
Net income	$	13,910		$	12,079

Condensed Statements of Comprehensive Income

Condensed Statements of Comprehensive Income
	Three months ended March 31,
	2018			2017
	(In thousands)
Net income	$	13,910		$	12,079
Other comprehensive income (loss), net of tax:
Increase (decrease) in unrealized gains on available for sale securities arising during the period		(11,026	)		457
Change in minimum pension liability		80			54
Other comprehensive income (loss)		(10,946	)		511
Comprehensive income	$	2,964		$	12,590

Condensed Statements of Cash Flows

Condensed Statements of Cash Flows

	Three months ended March 31,
	2018			2017
	(In thousands)
Operating activities:
Net income	$	13,910		$	12,079
Adjustments to reconcile net income to net cash provided by operating activities:
Undistributed equity in earnings of Tri Counties Bank		(10,397	)		(8,474	)
Equity compensation vesting expense		391			381
Stock option excess tax benefits					—
Net change in other assets and liabilities		(405	)		(348	)
Net cash provided by operating activities		3,499			3,638
Investing activities: None
Financing activities:
Repurchase of common stock		(4	)		(169	)
Cash dividends paid — common		(3,903	)		(3,431	)
Net cash used for financing activities		(3,907	)		(3,600	)
Net change in cash and cash equivalents		(408	)		38
Cash and cash equivalents at beginning of year		3,924			2,802
Cash and cash equivalents at end of year	$	3,516		$	2,840

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Regulatory Matters (Tables)

3 Months Ended

Mar. 31, 2018

Banking and Thrift [Abstract]

Actual and Required Capital Ratios of Bank

The following tables present actual and required capital ratios as of March 31, 2018 and December 31, 2017 for the Company and the Bank under Basel III Capital Rules. The minimum capital amounts presented include the minimum required capital levels as of March 31, 2018 (1.875%) and December 31, 2017 (1.25%) based on the then phased-in provisions of the Basel III Capital Rules and the minimum required capital levels as of January 1, 2019 when the Basel III Capital Rules have been fully phased-in. Capital levels required to be considered well capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules.

						Minimum Capital					Minimum Capital					Required to be
						Required – Basel III					Required – Basel III					Considered Well
	Actual					Phase-in Schedule					Fully Phased In					Capitalized
	Amount		Ratio			Amount		Ratio			Amount		Ratio			Amount		Ratio
	(dollars in thousands)
As of March 31, 2018:
Total Capital
(to Risk Weighted Assets):
Consolidated		$539,966		13.91	%	$	383,434		9.875	%	$	407,702		10.50	%		N/A		N/A
Tri Counties Bank		$536,894		13.83	%	$	383,261		9.875	%	$	407,518		10.50	%	$	388,112		10.00	%
Tier 1 Capital
(to Risk Weighted Assets):
Consolidated		$506,129		13.03	%	$	305,777		7.875	%	$	330,045		8.50	%		N/A		N/A
Tri Counties Bank		$503,057		12.96	%	$	305,638		7.875	%	$	329,895		8.50	%	$	310,490		8.00	%
Common equity Tier 1 Capital
(to Risk Weighted Assets):
Consolidated		$450,933		11.61	%	$	247,534		6.375	%	$	271,802		7.00	%		N/A		N/A
Tri Counties Bank		$503,057		12.96	%	$	247,421		6.375	%	$	271,678		7.00	%	$	252,273		6.50	%
Tier 1 Capital (to Average Assets):
Consolidated		$506,129		10.84	%	$	186,720		4.000	%	$	186,720		4.00	%		N/A		N/A
Tri Counties Bank		$503,057		10.78	%	$	186,716		4.000	%	$	186,716		4.00	%	$	233,395		5.00	%

	Actual					Minimum Capital Required – Basel III Phase-in Schedule					Minimum Capital Required – Basel III Fully Phased In					Required to be Considered Well Capitalized
	Amount		Ratio			Amount		Ratio			Amount		Ratio			Amount		Ratio
	(dollars in thousands)
As of December 31, 2017:
Total Capital
(to Risk Weighted Assets):
Consolidated	$	528,805		14.07	%	$	347,694		9.25	%	$	394,679		10.50	%		N/A		N/A
Tri Counties Bank	$	525,384		13.98	%	$	347,535		9.25	%	$	394,499		10.50	%	$	375,713		10.00	%
Tier 1 Capital
(to Risk Weighted Assets):
Consolidated	$	495,318		13.18	%	$	272,517		7.25	%	$	319,502		8.50	%		N/A		N/A
Tri Counties Bank	$	491,897		13.09	%	$	272,392		7.25	%	$	319,356		8.50	%	$	300,570		8.00	%
Common equity Tier 1 Capital
(to Risk Weighted Assets):
Consolidated	$	440,643		11.72	%	$	216,134		5.75	%	$	263,120		7.00	%		N/A		N/A
Tri Counties Bank	$	491,897		13.09	%	$	216,035		5.75	%	$	262,999		7.00	%	$	244,214		6.50	%
Tier 1 Capital (to Average Assets):
Consolidated	$	495,318		10.80	%	$	183,400		4.00	%	$	183,400		4.00	%		N/A		N/A
Tri Counties Bank	$	491,897		10.73	%	$	183,394		4.00	%	$	183,394		4.00	%	$	229,243		5.00	%

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Summary of Quarterly Results of Operations (unaudited) (Tables)

3 Months Ended

Mar. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Results of Operations

The following table sets forth the results of operations for the periods indicated, and is unaudited; however, in the opinion of Management, it reflects all adjustments (which include only normal recurring adjustments) necessary to present fairly the summarized results for such periods.

	2018 Quarters Ended
	December 31,	September 30,	June 30,	March 31,
	(dollars in thousands, except per share data)
Interest and dividend income:
Loans:
Discount accretion PCI – cash basis				$	246
Discount accretion PCI – other					60
Discount accretion PNCI					326
All other loan interest income					37,417
Total loan interest income					38,049
Debt securities, dividends and interest bearing cash at banks (not FTE)					9,072
Total interest income					47,121
Interest expense					2,135
Net interest income					44,986
(Benefit from reversal of) provision for loan losses					(236	)
Net interest income after provision for loan losses					45,222
Noninterest income					12,290
Noninterest expense					38,162
Income before income taxes					19,350
Income tax expense					5,440
Net income				$	13,910
Per common share:
Net income (diluted)				$	0.60
Dividends				$	0.17

	2017 Quarters Ended
	December 31,		September 30,		June 30,			March 31,
	(dollars in thousands, except per share data)
Interest and dividend income:
Loans:
Discount accretion PCI – cash basis	$	516	$	398	$	386		$	112
Discount accretion PCI – other		445		407		797			631
Discount accretion PNCI		528		559		987			798
All other loan interest income		36,705		35,904		34,248			33,373
Total loan interest income		38,194		37,268		36,418			34,914
Debt securities, dividends and interest bearing cash at banks (not FTE)		8,767		8,645		8,626			8,570
Total interest income		46,961		45,913		45,044			43,484
Interest expense		1,868		1,829		1,610			1,491
Net interest income		45,093		44,084		43,434			41,993
Provision for (benefit from reversal of provision for) loan losses		1,677		765		(796	)		(1,557	)
Net interest income after provision for loan losses		43,416		43,319		44,230			43,550
Noninterest income		12,478		12,930		12,910			11,703
Noninterest expense		38,076		37,222		35,904			35,822
Income before income taxes		17,818		19,027		21,236			19,431
Income tax expense		14,829		7,130		7,647			7,352
Net income	$	2,989	$	11,897	$	13,589		$	12,079
Per common share:
Net income (diluted)	$	0.13	$	0.51	$	0.58		$	0.52
Dividends	$	0.17	$	0.17	$	0.17		$	0.15

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Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended		12 Months Ended
	Mar. 31, 2018 USD ($) Office Segment Location Trust Branch Business	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)	Jan. 01, 2018 USD ($)
Significant Of Accounting Policies [Line Items]
Number of subsidiary business trusts | Trust	5
Number of loan production offices | Office	2
Company's investments in the trusts	$ 1,703,000
Number of business segment | Segment	1
Marketable securities recorded	$ 2,890,000		$ 2,938,000
Unrealized losses recognized in condensed consolidated statements of income	48,000
OTTI losses due to debt securities	$ 0		$ 0
Loans contractual past due	90 days
TDR loans payment period in nonaccrual status	6 months
Federal statutory income tax rate	21.00%	35.00%	35.00%
Tri Counties Bank [Member]
Significant Of Accounting Policies [Line Items]
Number of locations acquired | Location	3
Number of traditional operating branches | Branch	57
Number of in-store operating branches | Branch	9
Trading Debt Securities [Member]
Significant Of Accounting Policies [Line Items]
Trading debt securities	$ 0		$ 0
California [Member]
Significant Of Accounting Policies [Line Items]
Number of counties | Business	26
ASU 2016-01 [Member] | Deferred Tax Assets [Member]
Significant Of Accounting Policies [Line Items]
New accounting pronouncement or change in accounting principle cumulative effect of change on equity or net assets				$ (18,000)
ASU 2016-01 [Member] | Retained Earnings [Member]
Significant Of Accounting Policies [Line Items]
New accounting pronouncement or change in accounting principle cumulative effect of change on equity or net assets				(62,000)
ASU 2016-09 [Member]
Significant Of Accounting Policies [Line Items]
Recognition of excess tax benefits		$ 90,000
ASU 2018-02 [Member] | Retained Earnings [Member]
Significant Of Accounting Policies [Line Items]
New accounting pronouncement or change in accounting principle cumulative effect of change on equity or net assets				1,093,000
ASU 2018-02 [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
Significant Of Accounting Policies [Line Items]
New accounting pronouncement or change in accounting principle cumulative effect of change on equity or net assets				$ (1,093,000)
Furniture and Equipment [Member] | Minimum [Member]
Significant Of Accounting Policies [Line Items]
Estimated useful lives of the related assets or lease terms	3 years
Furniture and Equipment [Member] | Maximum [Member]
Significant Of Accounting Policies [Line Items]
Estimated useful lives of the related assets or lease terms	10 years
Land Improvements and Buildings [Member] | Minimum [Member]
Significant Of Accounting Policies [Line Items]
Estimated useful lives of the related assets or lease terms	15 years
Land Improvements and Buildings [Member] | Maximum [Member]
Significant Of Accounting Policies [Line Items]
Estimated useful lives of the related assets or lease terms	40 years

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Business Combinations - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	Dec. 11, 2017	Dec. 08, 2017
Business Acquisition [Line Items]
Common stock, closing price		$ 41.64
Merger Agreement [Member] | FNBB [Member]
Business Acquisition [Line Items]
Ownership percentage of combined entity post merger		24.00%
FNBB [Member]
Business Acquisition [Line Items]
Consideration value, per share		$ 40.81
Total consideration value		$ 315.3
FNBB [Member] | Merger Agreement [Member]
Business Acquisition [Line Items]
Average share price of the Company's Stock, percentage	120.00%
Initial price	$ 41.48
Merger Agreement termination conditions	(i) the average share price of the Company’s common stock for the 20 day period up to and including the fifth day prior to the closing date (the “Average Closing Share Price”) is greater than $49.78, which equals 120% of the average share price of the Company’s stock for the 20 trading-day period up to and including December 8, 2017, which was $41.48 (the “Initial Price”) and (ii) the Company’s common stock outperforms the KBW Regional Banking Index by more than 20%, unless FNBB agrees that the Exchange Ratio will be reduced and fewer shares of the Company’s common stock will be issued to FNBB shareholders on a per share basis. Conversely, FNBB can terminate the Merger Agreement if both (i) the Average Closing Share Price is less than $33.18, which is equivalent to 80% of the Initial Price, and (ii) the Company’s common stock underperforms the KBW Regional Banking Index by more than 20%, unless the Company agrees that the Exchange Ratio will be increased and more shares of the Company common stock will be issued to FNBB shareholders on a per share basis.
Percentage of initial price	80.00%
FNBB [Member] | Merger Agreement [Member] | KBW Regional Banking Index [Member]
Business Acquisition [Line Items]
Percentage of common stock outperforms in excess of KBW Regional Banking Index	20.00%
FNBB [Member] | Merger Agreement [Member] | Minimum [Member]
Business Acquisition [Line Items]
Consideration value, per share	$ 49.78
FNBB [Member] | Merger Agreement [Member] | Maximum [Member]
Business Acquisition [Line Items]
Consideration value, per share	$ 33.18
Number of trading days	20 days
Shares held by acquiree	$ 119.0
FNBB [Member] | Common Stock [Member]
Business Acquisition [Line Items]
Shares exchange ratio	0.98

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Investment Securities - Amortized Cost and Estimated Fair Values of Investments in Debt Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 754,870	$ 731,292
Gross Unrealized Gains	783	2,583
Gross Unrealized Losses	(19,758)	(5,930)
Estimated Fair Value	735,895	727,945
Amortized Cost, Held to Maturity	496,035	514,844
Gross Unrealized Gains, Held to Maturity	572	5,247
Gross Unrealized Losses, Held to Maturity	(7,968)	(1,926)
Estimated Fair Value, Held to Maturity	488,639	518,165
Obligations of U.S. Government Corporations and Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	633,310	609,695
Gross Unrealized Gains	317	695
Gross Unrealized Losses	(16,970)	(5,601)
Estimated Fair Value	616,657	604,789
Amortized Cost, Held to Maturity	481,457	500,271
Gross Unrealized Gains, Held to Maturity	533	5,101
Gross Unrealized Losses, Held to Maturity	(7,737)	(1,889)
Estimated Fair Value, Held to Maturity	474,253	503,483
Obligations of States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	121,560	121,597
Gross Unrealized Gains	466	1,888
Gross Unrealized Losses	(2,788)	(329)
Estimated Fair Value	119,238	123,156
Amortized Cost, Held to Maturity	14,578	14,573
Gross Unrealized Gains, Held to Maturity	39	146
Gross Unrealized Losses, Held to Maturity	(231)	(37)
Estimated Fair Value, Held to Maturity	$ 14,386	$ 14,682

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Investment Securities - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018 USD ($) Investmentsecurities	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)
Investment Securities [Line Items]
Investment securities sold	$ 0	$ 0
Investment securities carrying value	415,542,000		$ 285,596,000
Residential real estate mortgage-backed securities	$ 1,114,767,000
Life of mortgage-backed securities	6 years 1 month 6 days
Obligations of U.S. Government Corporations and Agencies [Member]
Investment Securities [Line Items]
Debt securities | Investmentsecurities	128
Percentage of aggregate depreciation in unrealized losses	2.45%
Obligations of States and Political Subdivisions [Member]
Investment Securities [Line Items]
Debt securities | Investmentsecurities	94
Percentage of aggregate depreciation in unrealized losses	3.16%

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Investment Securities - Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Due in one year, Amortized Cost	$ 2
Due after one year through five years, Amortized Cost	235
Due after five years through ten years, Amortized Cost	3,324
Due after ten years, Amortized Cost	751,309
Totals, Amortized Cost	754,870
Due in one year, Estimated Fair Value	2
Due after one year through five years, Estimated Fair Value	236
Due after five years through ten years, Estimated Fair Value	3,452
Due after ten years, Estimated Fair Value	732,205
Totals, Estimated Fair Value	735,895
Due in one year, Amortized Cost, Held to Maturity	0
Due after one year through five years, Amortized Cost, Held to Maturity	1,215
Due after five years through ten years, Amortized Cost, Held to Maturity	20,631
Due after ten years, Amortized Cost, Held to Maturity	474,189
Totals, Amortized Cost, Held to Maturity	496,035	$ 514,844
Due in one year, Estimated Fair Value, Held to Maturity	0
Due after one year through five years, Estimated Fair Value, Held to Maturity	1,228
Due after five years through ten years, Estimated Fair Value, Held to Maturity	20,291
Due after ten years, Estimated Fair Value, Held to Maturity	467,120
Estimated Fair Value, Held to Maturity	$ 488,639	$ 518,165

XML

Investment Securities - Gross Unrealized Losses on Debt Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	$ 499,349	$ 289,271
Less than 12 months, Unrealized Loss	(11,801)	(2,211)
12 months or more, Fair Value	174,366	183,423
12 months or more, Unrealized Loss	(7,957)	(3,719)
Total Fair Value	673,715	472,694
Total Unrealized Loss	(19,758)	(5,930)
Less than 12 months, Fair Value, held to maturity	308,476	94,505
Less than 12 months, Unrealized Loss, held to maturity	(4,695)	(574)
12 months or more, Fair Value, held to maturity	92,388	98,004
12 months or more, Unrealized Loss, held to maturity	(3,273)	(1,352)
Total Fair Value, held to maturity	400,864	192,509
Total Unrealized Loss, held to maturity	(7,968)	(1,926)
Obligations of U.S. Government Corporations and Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	434,302	284,367
Less than 12 months, Unrealized Loss	(10,345)	(2,176)
12 months or more, Fair Value	158,324	166,338
12 months or more, Unrealized Loss	(6,625)	(3,425)
Total Fair Value	592,626	450,705
Total Unrealized Loss	(16,970)	(5,601)
Less than 12 months, Fair Value, held to maturity	299,575	93,017
Less than 12 months, Unrealized Loss, held to maturity	(4,551)	(567)
12 months or more, Fair Value, held to maturity	89,809	95,367
12 months or more, Unrealized Loss, held to maturity	(3,186)	(1,322)
Total Fair Value, held to maturity	389,384	188,384
Total Unrealized Loss, held to maturity	(7,737)	(1,889)
Obligations of States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	65,047	4,904
Less than 12 months, Unrealized Loss	(1,456)	(35)
12 months or more, Fair Value	16,042	17,085
12 months or more, Unrealized Loss	(1,332)	(294)
Total Fair Value	81,089	21,989
Total Unrealized Loss	(2,788)	(329)
Less than 12 months, Fair Value, held to maturity	8,901	1,488
Less than 12 months, Unrealized Loss, held to maturity	(144)	(7)
12 months or more, Fair Value, held to maturity	2,579	2,637
12 months or more, Unrealized Loss, held to maturity	(87)	(30)
Total Fair Value, held to maturity	11,480	4,125
Total Unrealized Loss, held to maturity	$ (231)	$ (37)

XML

Loans - Summary of Loan Balances (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	$ 3,069,733	$ 3,015,165	$ 2,761,192
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	3,069,733	3,015,165	2,761,192
Construction:
Total loans, net of unamortized deferred loan fees and discounts	3,069,733	3,015,165	2,761,192
Commercial	3,093,564	3,038,472
Unamortized net deferred loan fees	(9,671)	(8,651)
Discounts to principal balance of loans owed, net of charge-offs	(14,160)	(14,656)
Total loans, net of unamortized deferred loan fees and discounts	3,069,733	3,015,165	2,761,192
Allowance for loan losses	(29,973)	(30,323)	(31,017)	$ (32,503)
Mortgage Loans on Real Estate [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	2,359,379	2,300,322
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	2,359,379	2,300,322
Construction:
Total loans, net of unamortized deferred loan fees and discounts	2,359,379	2,300,322
Total loans, net of unamortized deferred loan fees and discounts	2,359,379	2,300,322
Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	348,789	356,874
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	348,789	356,874
Construction:
Total loans, net of unamortized deferred loan fees and discounts	348,789	356,874
Total loans, net of unamortized deferred loan fees and discounts	348,789	356,874
Commercial Portfolio Segment [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	216,015	220,412
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	216,015	220,412
Construction:
Total loans, net of unamortized deferred loan fees and discounts	216,015	220,412
Total loans, net of unamortized deferred loan fees and discounts	216,015	220,412
Construction [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	145,550	137,557
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	145,550	137,557
Construction:
Total loans, net of unamortized deferred loan fees and discounts	145,550	137,557
Total loans, net of unamortized deferred loan fees and discounts	145,550	137,557
Residential 1-4 Family [Member] | Mortgage Loans on Real Estate [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	386,111	385,426
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	386,111	385,426
Construction:
Total loans, net of unamortized deferred loan fees and discounts	386,111	385,426
Total loans, net of unamortized deferred loan fees and discounts	386,111	385,426
Home Equity Loans [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	41,932	43,031	40,241
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	41,932	43,031	40,241
Construction:
Total loans, net of unamortized deferred loan fees and discounts	41,932	43,031	40,241
Total loans, net of unamortized deferred loan fees and discounts	41,932	43,031	40,241
Allowance for loan losses	(1,736)	(1,841)	(2,451)	(2,644)
Other Consumer [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	23,606	25,155	29,313
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	23,606	25,155	29,313
Construction:
Total loans, net of unamortized deferred loan fees and discounts	23,606	25,155	29,313
Total loans, net of unamortized deferred loan fees and discounts	23,606	25,155	29,313
Allowance for loan losses	(570)	(586)	(595)	(622)
Commercial [Member] | Mortgage Loans on Real Estate [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	1,973,268	1,914,896	1,761,114
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	1,973,268	1,914,896	1,761,114
Construction:
Total loans, net of unamortized deferred loan fees and discounts	1,973,268	1,914,896	1,761,114
Total loans, net of unamortized deferred loan fees and discounts	1,973,268	1,914,896	1,761,114
Allowance for loan losses	(11,495)	(11,441)	(11,542)	(11,517)
Commercial [Member] | Construction [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	73,952	69,627	64,843
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	73,952	69,627	64,843
Construction:
Total loans, net of unamortized deferred loan fees and discounts	73,952	69,627	64,843
Total loans, net of unamortized deferred loan fees and discounts	73,952	69,627	64,843
Allowance for loan losses	(847)	(642)	(572)	(680)
Home Equity Lines of Credit [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	283,251	288,688	283,596
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	283,251	288,688	283,596
Construction:
Total loans, net of unamortized deferred loan fees and discounts	283,251	288,688	283,596
Total loans, net of unamortized deferred loan fees and discounts	283,251	288,688	283,596
Allowance for loan losses	(5,412)	(5,800)	(6,530)	(7,044)
Residential [Member] | Mortgage Loans on Real Estate [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	386,111	385,426	309,701
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	386,111	385,426	309,701
Construction:
Total loans, net of unamortized deferred loan fees and discounts	386,111	385,426	309,701
Total loans, net of unamortized deferred loan fees and discounts	386,111	385,426	309,701
Allowance for loan losses	(2,170)	(2,317)	(2,662)	(2,748)
Residential [Member] | Construction [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	71,598	67,930	59,699
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	71,598	67,930	59,699
Construction:
Total loans, net of unamortized deferred loan fees and discounts	71,598	67,930	59,699
Total loans, net of unamortized deferred loan fees and discounts	71,598	67,930	59,699
Allowance for loan losses	(1,351)	(1,184)	$ (1,339)	$ (1,417)
Originated [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	2,755,148	2,690,402
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	2,755,148	2,690,402
Construction:
Total loans, net of unamortized deferred loan fees and discounts	2,755,148	2,690,402
Commercial	2,764,819	2,699,053
Unamortized net deferred loan fees	(9,671)	(8,651)
Total loans, net of unamortized deferred loan fees and discounts	2,755,148	2,690,402
Allowance for loan losses	(29,057)	(29,122)
Originated [Member] | Mortgage Loans on Real Estate [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	2,077,223	2,011,032
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	2,077,223	2,011,032
Construction:
Total loans, net of unamortized deferred loan fees and discounts	2,077,223	2,011,032
Total loans, net of unamortized deferred loan fees and discounts	2,077,223	2,011,032
Originated [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	326,962	332,649
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	326,962	332,649
Construction:
Total loans, net of unamortized deferred loan fees and discounts	326,962	332,649
Total loans, net of unamortized deferred loan fees and discounts	326,962	332,649
Originated [Member] | Commercial Portfolio Segment [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	205,673	209,437
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	205,673	209,437
Construction:
Total loans, net of unamortized deferred loan fees and discounts	205,673	209,437
Total loans, net of unamortized deferred loan fees and discounts	205,673	209,437
Originated [Member] | Construction [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	145,290	137,284
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	145,290	137,284
Construction:
Total loans, net of unamortized deferred loan fees and discounts	145,290	137,284
Total loans, net of unamortized deferred loan fees and discounts	145,290	137,284
Originated [Member] | Residential 1-4 Family [Member] | Mortgage Loans on Real Estate [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	323,161	320,522
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	323,161	320,522
Construction:
Total loans, net of unamortized deferred loan fees and discounts	323,161	320,522
Total loans, net of unamortized deferred loan fees and discounts	323,161	320,522
Originated [Member] | Home Equity Loans [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	38,889	39,848
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	38,889	39,848
Construction:
Total loans, net of unamortized deferred loan fees and discounts	38,889	39,848
Total loans, net of unamortized deferred loan fees and discounts	38,889	39,848
Originated [Member] | Other Consumer [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	21,422	22,859
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	21,422	22,859
Construction:
Total loans, net of unamortized deferred loan fees and discounts	21,422	22,859
Total loans, net of unamortized deferred loan fees and discounts	21,422	22,859
Originated [Member] | Commercial [Member] | Mortgage Loans on Real Estate [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	1,754,062	1,690,510
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	1,754,062	1,690,510
Construction:
Total loans, net of unamortized deferred loan fees and discounts	1,754,062	1,690,510
Total loans, net of unamortized deferred loan fees and discounts	1,754,062	1,690,510
Originated [Member] | Commercial [Member] | Construction [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	73,701	69,364
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	73,701	69,364
Construction:
Total loans, net of unamortized deferred loan fees and discounts	73,701	69,364
Total loans, net of unamortized deferred loan fees and discounts	73,701	69,364
Originated [Member] | Home Equity Lines of Credit [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	266,651	269,942
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	266,651	269,942
Construction:
Total loans, net of unamortized deferred loan fees and discounts	266,651	269,942
Total loans, net of unamortized deferred loan fees and discounts	266,651	269,942
Originated [Member] | Residential [Member] | Construction [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	71,589	67,920
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	71,589	67,920
Construction:
Total loans, net of unamortized deferred loan fees and discounts	71,589	67,920
Total loans, net of unamortized deferred loan fees and discounts	71,589	67,920
PNCI [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	300,109	309,203
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	300,109	309,203
Construction:
Total loans, net of unamortized deferred loan fees and discounts	300,109	309,203
Commercial	306,924	316,238
Discounts to principal balance of loans owed, net of charge-offs	(6,815)	(7,035)
Total loans, net of unamortized deferred loan fees and discounts	300,109	309,203
Allowance for loan losses	(748)	(929)
PNCI [Member] | Mortgage Loans on Real Estate [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	272,374	279,342
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	272,374	279,342
Construction:
Total loans, net of unamortized deferred loan fees and discounts	272,374	279,342
Total loans, net of unamortized deferred loan fees and discounts	272,374	279,342
PNCI [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	19,638	21,197
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	19,638	21,197
Construction:
Total loans, net of unamortized deferred loan fees and discounts	19,638	21,197
Total loans, net of unamortized deferred loan fees and discounts	19,638	21,197
PNCI [Member] | Commercial Portfolio Segment [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	7,837	8,391
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	7,837	8,391
Construction:
Total loans, net of unamortized deferred loan fees and discounts	7,837	8,391
Total loans, net of unamortized deferred loan fees and discounts	7,837	8,391
PNCI [Member] | Construction [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	260	273
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	260	273
Construction:
Total loans, net of unamortized deferred loan fees and discounts	260	273
Total loans, net of unamortized deferred loan fees and discounts	260	273
PNCI [Member] | Residential 1-4 Family [Member] | Mortgage Loans on Real Estate [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	61,206	63,519
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	61,206	63,519
Construction:
Total loans, net of unamortized deferred loan fees and discounts	61,206	63,519
Total loans, net of unamortized deferred loan fees and discounts	61,206	63,519
PNCI [Member] | Home Equity Loans [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	2,558	2,698
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	2,558	2,698
Construction:
Total loans, net of unamortized deferred loan fees and discounts	2,558	2,698
Total loans, net of unamortized deferred loan fees and discounts	2,558	2,698
PNCI [Member] | Other Consumer [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	2,141	2,251
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	2,141	2,251
Construction:
Total loans, net of unamortized deferred loan fees and discounts	2,141	2,251
Total loans, net of unamortized deferred loan fees and discounts	2,141	2,251
PNCI [Member] | Commercial [Member] | Mortgage Loans on Real Estate [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	211,168	215,823
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	211,168	215,823
Construction:
Total loans, net of unamortized deferred loan fees and discounts	211,168	215,823
Total loans, net of unamortized deferred loan fees and discounts	211,168	215,823
PNCI [Member] | Commercial [Member] | Construction [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	251	263
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	251	263
Construction:
Total loans, net of unamortized deferred loan fees and discounts	251	263
Total loans, net of unamortized deferred loan fees and discounts	251	263
PNCI [Member] | Home Equity Lines of Credit [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	14,939	16,248
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	14,939	16,248
Construction:
Total loans, net of unamortized deferred loan fees and discounts	14,939	16,248
Total loans, net of unamortized deferred loan fees and discounts	14,939	16,248
PNCI [Member] | Residential [Member] | Construction [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	9	10
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	9	10
Construction:
Total loans, net of unamortized deferred loan fees and discounts	9	10
Total loans, net of unamortized deferred loan fees and discounts	9	10
PCI - Cash Basis [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	1,619	2,069
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	1,619	2,069
Construction:
Total loans, net of unamortized deferred loan fees and discounts	1,619	2,069
Commercial	5,167	5,863
Discounts to principal balance of loans owed, net of charge-offs	(3,548)	(3,794)
Total loans, net of unamortized deferred loan fees and discounts	1,619	2,069
Allowance for loan losses	(8)	(17)
PCI - Cash Basis [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	1,619	2,069
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	1,619	2,069
Construction:
Total loans, net of unamortized deferred loan fees and discounts	1,619	2,069
Total loans, net of unamortized deferred loan fees and discounts	1,619	2,069
PCI - Cash Basis [Member] | Home Equity Lines of Credit [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	1,619	2,069
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	1,619	2,069
Construction:
Total loans, net of unamortized deferred loan fees and discounts	1,619	2,069
Total loans, net of unamortized deferred loan fees and discounts	1,619	2,069
PCI - Other [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	12,857	13,491
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	12,857	13,491
Construction:
Total loans, net of unamortized deferred loan fees and discounts	12,857	13,491
Commercial	16,654	17,318
Discounts to principal balance of loans owed, net of charge-offs	(3,797)	(3,827)
Total loans, net of unamortized deferred loan fees and discounts	12,857	13,491
Allowance for loan losses	(160)	(255)
PCI - Other [Member] | Mortgage Loans on Real Estate [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	9,782	9,948
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	9,782	9,948
Construction:
Total loans, net of unamortized deferred loan fees and discounts	9,782	9,948
Total loans, net of unamortized deferred loan fees and discounts	9,782	9,948
PCI - Other [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	570	959
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	570	959
Construction:
Total loans, net of unamortized deferred loan fees and discounts	570	959
Total loans, net of unamortized deferred loan fees and discounts	570	959
PCI - Other [Member] | Commercial Portfolio Segment [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	2,505	2,584
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	2,505	2,584
Construction:
Total loans, net of unamortized deferred loan fees and discounts	2,505	2,584
Total loans, net of unamortized deferred loan fees and discounts	2,505	2,584
PCI - Other [Member] | Residential 1-4 Family [Member] | Mortgage Loans on Real Estate [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	1,744	1,385
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	1,744	1,385
Construction:
Total loans, net of unamortized deferred loan fees and discounts	1,744	1,385
Total loans, net of unamortized deferred loan fees and discounts	1,744	1,385
PCI - Other [Member] | Home Equity Loans [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	485	485
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	485	485
Construction:
Total loans, net of unamortized deferred loan fees and discounts	485	485
Total loans, net of unamortized deferred loan fees and discounts	485	485
PCI - Other [Member] | Other Consumer [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	43	45
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	43	45
Construction:
Total loans, net of unamortized deferred loan fees and discounts	43	45
Total loans, net of unamortized deferred loan fees and discounts	43	45
PCI - Other [Member] | Commercial [Member] | Mortgage Loans on Real Estate [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	8,038	8,563
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	8,038	8,563
Construction:
Total loans, net of unamortized deferred loan fees and discounts	8,038	8,563
Total loans, net of unamortized deferred loan fees and discounts	8,038	8,563
PCI - Other [Member] | Home Equity Lines of Credit [Member] | Consumer [Member]
Mortgage loans on real estate:
Total loans, net of unamortized deferred loan fees and discounts	42	429
Consumer:
Total loans, net of unamortized deferred loan fees and discounts	42	429
Construction:
Total loans, net of unamortized deferred loan fees and discounts	42	429
Total loans, net of unamortized deferred loan fees and discounts	$ 42	$ 429

XML

Loans - Change in Accretable Yield for PCI (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Change in accretable yield:
Balance at beginning of period	$ 4,262	$ 10,348
Accretion to interest income	(255)	(902)
Reclassification (to) from nonaccretable difference	140	114
Balance at end of period	$ 4,147	$ 9,560

XML

Allowance for Loan Losses - Summary of Activity in Allowance for Loan Losses, and Ending Balance of Loans, Net of Unearned Fees for Periods Indicated (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	$ 3,069,733	$ 2,761,192	$ 3,015,165
Individ. evaluated for impairment	25,803	27,650	28,234
Loans pooled for evaluation	3,029,454	2,710,005	2,971,371
Beginning balance	30,323	32,503	32,503
Charge-offs	(480)	(409)	(4,410)
Recoveries	366	480	2,141
(Benefit) provision	(236)	(1,557)	89
Ending balance	29,973	31,017	30,323
Ending balance:
Individ. evaluated for impairment	3,091	1,686	2,699
Loans pooled for evaluation	26,714	26,900	27,352
Mortgage Loans on Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	2,359,379		2,300,322
Mortgage Loans on Real Estate [Member] | Residential [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	386,111	309,701	385,426
Individ. evaluated for impairment	5,535	3,849	5,298
Loans pooled for evaluation	378,832	304,493	378,743
Beginning balance	2,317	2,748	2,748
Charge-offs	(1)		(60)
(Benefit) provision	(146)	(86)	(371)
Ending balance	2,170	2,662	2,317
Ending balance:
Individ. evaluated for impairment	190	249	230
Loans pooled for evaluation	1,910	2,188	1,932
Mortgage Loans on Real Estate [Member] | Commercial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	1,973,268	1,761,114	1,914,896
Individ. evaluated for impairment	11,110	16,979	13,911
Loans pooled for evaluation	1,954,120	1,731,785	1,892,422
Beginning balance	11,441	11,517	11,517
Charge-offs			(186)
Recoveries	15	110	397
(Benefit) provision	39	(85)	(287)
Ending balance	11,495	11,542	11,441
Ending balance:
Individ. evaluated for impairment	154	124	30
Loans pooled for evaluation	11,281	9,971	11,351
Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	348,789		356,874
Consumer [Member] | Home Equity Lines of Credit [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	283,251	283,596	288,688
Individ. evaluated for impairment	2,450	2,204	2,688
Loans pooled for evaluation	279,140	277,388	283,502
Beginning balance	5,800	7,044	7,044
Charge-offs	(80)	(71)	(98)
Recoveries	209	46	698
(Benefit) provision	(517)	(489)	(1,844)
Ending balance	5,412	6,530	5,800
Ending balance:
Individ. evaluated for impairment	448	400	427
Loans pooled for evaluation	4,956	6,122	5,356
Consumer and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	216,015	212,685	220,412
Individ. evaluated for impairment	4,621	3,072	4,470
Loans pooled for evaluation	208,889	205,832	213,358
Beginning balance	6,512	5,831	5,831
Charge-offs	(205)	(133)	(1,444)
Recoveries	50	170	428
(Benefit) provision	35	(542)	1,697
Ending balance	6,392	5,326	6,512
Ending balance:
Individ. evaluated for impairment	2,113	811	1,848
Loans pooled for evaluation	4,249	3,873	4,624
Construction [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	145,550		137,557
Construction [Member] | Residential [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	71,598	59,699	67,930
Individ. evaluated for impairment	136	25	140
Loans pooled for evaluation	71,462	58,830	67,790
Beginning balance	1,184	1,417	1,417
Charge-offs			(1,104)
(Benefit) provision	167	(78)	871
Ending balance	1,351	1,339	1,184
Ending balance:
Individ. evaluated for impairment		14
Loans pooled for evaluation	1,351	1,282	1,184
Construction [Member] | Commercial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	73,952	64,843	69,627
Loans pooled for evaluation	73,952	64,843	69,627
Beginning balance	642	680	680
Recoveries		1	1
(Benefit) provision	205	(109)	(39)
Ending balance	847	572	642
Ending balance:
Loans pooled for evaluation	847	572	642
Home Equity Loans [Member] | Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	41,932	40,241	43,031
Individ. evaluated for impairment	1,673	1,241	1,470
Loans pooled for evaluation	39,774	37,867	41,076
Beginning balance	1,841	2,644	2,644
Charge-offs		(31)	(332)
Recoveries	14	12	242
(Benefit) provision	(119)	(174)	(713)
Ending balance	1,736	2,451	1,841
Ending balance:
Individ. evaluated for impairment	130	57	107
Loans pooled for evaluation	1,606	2,328	1,734
Other Consumer [Member] | Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	23,606	29,313	25,155
Individ. evaluated for impairment	278	280	257
Loans pooled for evaluation	23,285	28,967	24,853
Beginning balance	586	622	622
Charge-offs	(194)	(174)	(1,186)
Recoveries	78	141	375
(Benefit) provision	100	6	775
Ending balance	570	595	586
Ending balance:
Individ. evaluated for impairment	56	31	57
Loans pooled for evaluation	514	564	529
Receivables Acquired with Deteriorated Credit Quality [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	14,476	23,537	15,560
Ending balance:
Loans acquired with deteriorated credit quality	168	2,431	272
Receivables Acquired with Deteriorated Credit Quality [Member] | Mortgage Loans on Real Estate [Member] | Residential [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	1,744	1,359	1,385
Ending balance:
Loans acquired with deteriorated credit quality	70	225	155
Receivables Acquired with Deteriorated Credit Quality [Member] | Mortgage Loans on Real Estate [Member] | Commercial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	8,038	12,350	8,563
Ending balance:
Loans acquired with deteriorated credit quality	60	1,447	60
Receivables Acquired with Deteriorated Credit Quality [Member] | Consumer [Member] | Home Equity Lines of Credit [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	1,661	4,004	2,498
Ending balance:
Loans acquired with deteriorated credit quality	8	8	17
Receivables Acquired with Deteriorated Credit Quality [Member] | Consumer and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	2,505	3,781	2,584
Ending balance:
Loans acquired with deteriorated credit quality	30	642	40
Receivables Acquired with Deteriorated Credit Quality [Member] | Construction [Member] | Residential [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts		844
Ending balance:
Loans acquired with deteriorated credit quality		43
Receivables Acquired with Deteriorated Credit Quality [Member] | Home Equity Loans [Member] | Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	485	1,133	485
Ending balance:
Loans acquired with deteriorated credit quality		66
Receivables Acquired with Deteriorated Credit Quality [Member] | Other Consumer [Member] | Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	$ 43	$ 66	$ 45

XML

Allowance for Loan Losses - Presentation of Credit Quality Indicators (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	$ 3,069,733	$ 3,015,165	$ 2,761,192
Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	2,755,148	2,690,402
PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	300,109	309,203
PCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	14,476	15,560
Pass [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	2,688,622	2,617,171
Pass [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	286,976	293,331
Special Mention [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	41,469	38,662
Special Mention [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	9,694	12,408
Substandard [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	25,057	34,569
Substandard [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	3,439	3,464
Mortgage Loans on Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	2,359,379	2,300,322
Mortgage Loans on Real Estate [Member] | Residential [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	386,111	385,426	309,701
Mortgage Loans on Real Estate [Member] | Residential [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	323,161	320,522
Mortgage Loans on Real Estate [Member] | Residential [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	61,206	63,519
Mortgage Loans on Real Estate [Member] | Residential [Member] | PCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	1,744	1,385
Mortgage Loans on Real Estate [Member] | Residential [Member] | Pass [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	317,799	315,120
Mortgage Loans on Real Estate [Member] | Residential [Member] | Pass [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	59,184	61,411
Mortgage Loans on Real Estate [Member] | Residential [Member] | Special Mention [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	2,274	2,234
Mortgage Loans on Real Estate [Member] | Residential [Member] | Special Mention [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	214	218
Mortgage Loans on Real Estate [Member] | Residential [Member] | Substandard [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	3,088	3,168
Mortgage Loans on Real Estate [Member] | Residential [Member] | Substandard [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	1,808	1,890
Mortgage Loans on Real Estate [Member] | Commercial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	1,973,268	1,914,896	1,761,114
Mortgage Loans on Real Estate [Member] | Commercial [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	1,754,062	1,690,510
Mortgage Loans on Real Estate [Member] | Commercial [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	211,168	215,823
Mortgage Loans on Real Estate [Member] | Commercial [Member] | PCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	8,038	8,563
Mortgage Loans on Real Estate [Member] | Commercial [Member] | Pass [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	1,716,599	1,649,333
Mortgage Loans on Real Estate [Member] | Commercial [Member] | Pass [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	201,641	203,751
Mortgage Loans on Real Estate [Member] | Commercial [Member] | Special Mention [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	23,679	18,434
Mortgage Loans on Real Estate [Member] | Commercial [Member] | Special Mention [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	8,977	11,513
Mortgage Loans on Real Estate [Member] | Commercial [Member] | Substandard [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	13,784	22,743
Mortgage Loans on Real Estate [Member] | Commercial [Member] | Substandard [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	550	559
Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	348,789	356,874
Consumer [Member] | Home Equity Lines of Credit [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	283,251	288,688	283,596
Consumer [Member] | Home Equity Lines of Credit [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	266,651	269,942
Consumer [Member] | Home Equity Lines of Credit [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	14,939	16,248
Consumer [Member] | Home Equity Lines of Credit [Member] | PCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	1,661	2,498
Consumer [Member] | Home Equity Lines of Credit [Member] | Pass [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	263,270	265,345
Consumer [Member] | Home Equity Lines of Credit [Member] | Pass [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	13,686	14,866
Consumer [Member] | Home Equity Lines of Credit [Member] | Special Mention [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	1,628	2,558
Consumer [Member] | Home Equity Lines of Credit [Member] | Special Mention [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	282	450
Consumer [Member] | Home Equity Lines of Credit [Member] | Substandard [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	1,753	2,039
Consumer [Member] | Home Equity Lines of Credit [Member] | Substandard [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	971	932
Consumer [Member] | Home Equity Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	41,932	43,031	40,241
Consumer [Member] | Home Equity Loans [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	38,889	39,848
Consumer [Member] | Home Equity Loans [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	2,558	2,698
Consumer [Member] | Home Equity Loans [Member] | PCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	485	485
Consumer [Member] | Home Equity Loans [Member] | Pass [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	35,730	37,428
Consumer [Member] | Home Equity Loans [Member] | Pass [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	2,301	2,433
Consumer [Member] | Home Equity Loans [Member] | Special Mention [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	1,532	800
Consumer [Member] | Home Equity Loans [Member] | Special Mention [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	184	188
Consumer [Member] | Home Equity Loans [Member] | Substandard [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	1,627	1,620
Consumer [Member] | Home Equity Loans [Member] | Substandard [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	73	77
Consumer [Member] | Other Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	23,606	25,155	29,313
Consumer [Member] | Other Consumer [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	21,422	22,859
Consumer [Member] | Other Consumer [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	2,141	2,251
Consumer [Member] | Other Consumer [Member] | PCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	43	45
Consumer [Member] | Other Consumer [Member] | Pass [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	21,067	22,432
Consumer [Member] | Other Consumer [Member] | Pass [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	2,067	2,207
Consumer [Member] | Other Consumer [Member] | Special Mention [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	238	272
Consumer [Member] | Other Consumer [Member] | Special Mention [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	37	38
Consumer [Member] | Other Consumer [Member] | Substandard [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	117	155
Consumer [Member] | Other Consumer [Member] | Substandard [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	37	6
Consumer and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	216,015	220,412	212,685
Consumer and Industrial [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	205,673	209,437
Consumer and Industrial [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	7,837	8,391
Consumer and Industrial [Member] | PCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	2,505	2,584
Consumer and Industrial [Member] | Pass [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	193,829	195,208
Consumer and Industrial [Member] | Pass [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	7,837	8,390
Consumer and Industrial [Member] | Special Mention [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	7,263	9,492
Consumer and Industrial [Member] | Special Mention [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts		1
Consumer and Industrial [Member] | Substandard [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	4,581	4,737
Construction [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	145,550	137,557
Construction [Member] | Residential [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	71,598	67,930	59,699
Construction [Member] | Residential [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	71,589	67,920
Construction [Member] | Residential [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	9	10
Construction [Member] | Residential [Member] | Pass [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	71,482	67,813
Construction [Member] | Residential [Member] | Pass [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	9	10
Construction [Member] | Residential [Member] | Substandard [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	107	107
Construction [Member] | Commercial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	73,952	69,627	$ 64,843
Construction [Member] | Commercial [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	73,701	69,364
Construction [Member] | Commercial [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	251	263
Construction [Member] | Commercial [Member] | Pass [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	68,846	64,492
Construction [Member] | Commercial [Member] | Pass [Member] | PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	251	263
Construction [Member] | Commercial [Member] | Special Mention [Member] | Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans, net of unamortized deferred loan fees and discounts	$ 4,855	$ 4,872

XML

Allowance for Loan Losses - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018 USD ($) Category	Dec. 31, 2017 USD ($)	Mar. 31, 2017 USD ($)
Loans and Leases Receivable Disclosure [Line Items]
Number of categories occupied under commercial real estate loans | Category	2
Originated Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Impaired TDR Loans	$ 9,781,000	$ 12,517,000	$ 12,285,000
Additional funds in TDR	1,000	1,000	70,000
PNCI Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Impaired TDR Loans	1,471,000	1,352,000	1,470,000
Obligations to lend additional funds on TDR	$ 0	$ 0	$ 0
Minimum [Member]
Loans and Leases Receivable Disclosure [Line Items]
Period of collateral payment of loan	3 months
Maximum [Member]
Loans and Leases Receivable Disclosure [Line Items]
Period of collateral payment of loan	12 months

XML

Allowance for Loan Losses - Analysis of Past Due and Nonaccrual Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total originated loans	$ 3,069,733	$ 3,015,165
Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	17,336	8,927
Current	2,737,812	2,681,475
Total originated loans	2,755,148	2,690,402
Nonaccrual loans	16,080	15,462
PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,080	2,682
Current	297,029	306,521
Total originated loans	300,109	309,203
> 90 Days and still accruing		281
Nonaccrual loans	1,711	1,463
30-59 Days [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	11,452	3,983
30-59 Days [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,902	1,899
60-89 Days [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,845	2,426
60-89 Days [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	4	344
> 90 Days [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	4,039	2,518
> 90 Days [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	174	439
Mortgage Loans on Real Estate [Member] | Residential [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,063	2,493
Current	320,098	318,029
Total originated loans	323,161	320,522
Nonaccrual loans	2,235	1,725
Mortgage Loans on Real Estate [Member] | Residential [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,537	1,694
Current	58,669	61,825
Total originated loans	61,206	63,519
> 90 Days and still accruing		81
Nonaccrual loans	1,067	1,012
Mortgage Loans on Real Estate [Member] | Commercial [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	6,693	1,145
Current	1,747,369	1,689,365
Total originated loans	1,754,062	1,690,510
Nonaccrual loans	7,925	8,144
Mortgage Loans on Real Estate [Member] | Commercial [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		70
Current	211,168	215,753
Total originated loans	211,168	215,823
Mortgage Loans on Real Estate [Member] | 30-59 Days [Member] | Residential [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,217	1,740
Mortgage Loans on Real Estate [Member] | 30-59 Days [Member] | Residential [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,537	1,495
Mortgage Loans on Real Estate [Member] | 30-59 Days [Member] | Commercial [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	5,531	158
Mortgage Loans on Real Estate [Member] | 30-59 Days [Member] | Commercial [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		70
Mortgage Loans on Real Estate [Member] | 60-89 Days [Member] | Residential [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		510
Mortgage Loans on Real Estate [Member] | 60-89 Days [Member] | Residential [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		90
Mortgage Loans on Real Estate [Member] | 60-89 Days [Member] | Commercial [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		987
Mortgage Loans on Real Estate [Member] | > 90 Days [Member] | Residential [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	846	243
Mortgage Loans on Real Estate [Member] | > 90 Days [Member] | Residential [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		109
Mortgage Loans on Real Estate [Member] | > 90 Days [Member] | Commercial [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,162
Consumer [Member] | Home Equity Lines of Credit [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,284	948
Current	265,367	268,994
Total originated loans	266,651	269,942
Nonaccrual loans	733	811
Consumer [Member] | Home Equity Lines of Credit [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	508	856
Current	14,431	15,392
Total originated loans	14,939	16,248
> 90 Days and still accruing		200
Nonaccrual loans	571	402
Consumer [Member] | 30-59 Days [Member] | Home Equity Lines of Credit [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	938	528
Consumer [Member] | 30-59 Days [Member] | Home Equity Lines of Credit [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	362	298
Consumer [Member] | 60-89 Days [Member] | Home Equity Lines of Credit [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	26	48
Consumer [Member] | 60-89 Days [Member] | Home Equity Lines of Credit [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		228
Consumer [Member] | > 90 Days [Member] | Home Equity Lines of Credit [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	320	372
Consumer [Member] | > 90 Days [Member] | Home Equity Lines of Credit [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	146	330
Consumer [Member] | Home Equity Loans [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,662	991
Current	37,227	38,857
Total originated loans	38,889	39,848
Nonaccrual loans	1,193	1,106
Consumer [Member] | Home Equity Loans [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2	30
Current	2,556	2,668
Total originated loans	2,558	2,698
Nonaccrual loans	40	44
Consumer [Member] | Home Equity Loans [Member] | 30-59 Days [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,490	511
Consumer [Member] | Home Equity Loans [Member] | 30-59 Days [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2	30
Consumer [Member] | Home Equity Loans [Member] | 60-89 Days [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	18	107
Consumer [Member] | Home Equity Loans [Member] | > 90 Days [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	154	373
Consumer [Member] | Other Consumer [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	81	95
Current	21,341	22,764
Total originated loans	21,422	22,859
Nonaccrual loans	4	7
Consumer [Member] | Other Consumer [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	32	32
Current	2,109	2,219
Total originated loans	2,141	2,251
Nonaccrual loans	33	5
Consumer [Member] | Other Consumer [Member] | 30-59 Days [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	63	56
Consumer [Member] | Other Consumer [Member] | 30-59 Days [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		6
Consumer [Member] | Other Consumer [Member] | 60-89 Days [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	18	36
Consumer [Member] | Other Consumer [Member] | 60-89 Days [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	4	26
Consumer [Member] | Other Consumer [Member] | > 90 Days [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		3
Consumer [Member] | Other Consumer [Member] | > 90 Days [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	28
Consumer and Industrial [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,006	3,221
Current	202,667	206,216
Total originated loans	205,673	209,437
Nonaccrual loans	3,990	3,669
Consumer and Industrial [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1
Current	7,836	8,391
Total originated loans	7,837	8,391
Consumer and Industrial [Member] | 30-59 Days [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	915	956
Consumer and Industrial [Member] | 30-59 Days [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1
Consumer and Industrial [Member] | 60-89 Days [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	534	738
Consumer and Industrial [Member] | > 90 Days [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,557	1,527
Construction [Member] | Residential [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	298	34
Current	71,291	67,886
Total originated loans	71,589	67,920
Construction [Member] | Residential [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	9	10
Total originated loans	9	10
Construction [Member] | Commercial [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,249
Current	72,452	69,364
Total originated loans	73,701	69,364
Construction [Member] | Commercial [Member] | PNCI Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	251	263
Total originated loans	251	263
Construction [Member] | 30-59 Days [Member] | Residential [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	298	$ 34
Construction [Member] | 60-89 Days [Member] | Commercial [Member] | Originated Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 1,249

XML

Allowance for Loan Losses - Impaired Loans (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Originated Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment, With no related allowance recorded	$ 15,624	$ 19,325	$ 18,078
Unpaid principal, With no related allowance recorded	16,477	20,237	18,850
Average recorded investment, With no related allowance recorded	16,851	27,413	17,891
Interest income recognized, With no related allowance recorded	71	132	774
Recorded investment, With an allowance recorded	7,254	4,703	7,188
Unpaid principal, With an allowance recorded	7,426	4,783	7,328
Related allowance, With an allowance recorded	2,617	1,192	2,232
Average recorded investment, With an allowance recorded	7,221	6,310	6,735
Interest income recognized, With an allowance recorded	41	40	278
PNCI Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment, With no related allowance recorded	1,901	2,626	1,994
Unpaid principal, With no related allowance recorded	2,001	2,905	2,073
Average recorded investment, With no related allowance recorded	1,947	2,842	2,545
Interest income recognized, With no related allowance recorded	4	5	46
Recorded investment, With an allowance recorded	1,024	996	974
Unpaid principal, With an allowance recorded	1,026	996	975
Related allowance, With an allowance recorded	474	494	467
Average recorded investment, With an allowance recorded	999	2,312	1,018
Interest income recognized, With an allowance recorded	8	10	43
Mortgage Loans on Real Estate [Member] | Residential [Member] | Originated Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment, With no related allowance recorded	2,678	1,782	2,058
Unpaid principal, With no related allowance recorded	2,829	1,793	2,109
Average recorded investment, With no related allowance recorded	2,368	2,834	1,875
Interest income recognized, With no related allowance recorded	19	20	85
Recorded investment, With an allowance recorded	1,525	1,378	1,881
Unpaid principal, With an allowance recorded	1,549	1,382	1,914
Related allowance, With an allowance recorded	190	172	230
Average recorded investment, With an allowance recorded	1,703	1,692	1,626
Interest income recognized, With an allowance recorded	9	11	58
Mortgage Loans on Real Estate [Member] | Residential [Member] | PNCI Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment, With no related allowance recorded	1,332	433	1,359
Unpaid principal, With no related allowance recorded	1,390	455	1,404
Average recorded investment, With no related allowance recorded	1,345	654	911
Interest income recognized, With no related allowance recorded	2	2	24
Recorded investment, With an allowance recorded		256
Unpaid principal, With an allowance recorded		256
Related allowance, With an allowance recorded		77
Average recorded investment, With an allowance recorded		128	130
Interest income recognized, With an allowance recorded		2
Mortgage Loans on Real Estate [Member] | Commercial [Member] | Originated Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment, With no related allowance recorded	9,848	14,431	13,101
Unpaid principal, With no related allowance recorded	10,126	14,881	13,360
Average recorded investment, With no related allowance recorded	11,474	20,770	13,123
Interest income recognized, With no related allowance recorded	35	98	609
Recorded investment, With an allowance recorded	1,262	640	810
Unpaid principal, With an allowance recorded	1,281	640	826
Related allowance, With an allowance recorded	154	18	30
Average recorded investment, With an allowance recorded	1,036	1,029	728
Interest income recognized, With an allowance recorded	9	9	36
Mortgage Loans on Real Estate [Member] | Commercial [Member] | PNCI Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment, With no related allowance recorded		1,777
Unpaid principal, With no related allowance recorded		2,011
Average recorded investment, With no related allowance recorded		1,455	913
Recorded investment, With an allowance recorded		131
Unpaid principal, With an allowance recorded		131
Related allowance, With an allowance recorded		106
Average recorded investment, With an allowance recorded		1,440	66
Interest income recognized, With an allowance recorded		2
Consumer [Member] | Home Equity Lines of Credit [Member] | Originated Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment, With no related allowance recorded	888	1,064	1,093
Unpaid principal, With no related allowance recorded	944	1,144	1,175
Average recorded investment, With no related allowance recorded	991	2,013	1,287
Interest income recognized, With no related allowance recorded	6	6	39
Recorded investment, With an allowance recorded	527	427	401
Unpaid principal, With an allowance recorded	534	440	406
Related allowance, With an allowance recorded	146	106	111
Average recorded investment, With an allowance recorded	464	1,076	415
Interest income recognized, With an allowance recorded	4	1	8
Consumer [Member] | Home Equity Lines of Credit [Member] | PNCI Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment, With no related allowance recorded	501	220	591
Unpaid principal, With no related allowance recorded	529	233	612
Average recorded investment, With no related allowance recorded	546	337	663
Interest income recognized, With no related allowance recorded	2	1	22
Recorded investment, With an allowance recorded	534	493	603
Unpaid principal, With an allowance recorded	536	493	604
Related allowance, With an allowance recorded	302	295	316
Average recorded investment, With an allowance recorded	568	550	577
Interest income recognized, With an allowance recorded	3	5	26
Consumer [Member] | Home Equity Loans [Member] | Originated Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment, With no related allowance recorded	1,193	743	1,107
Unpaid principal, With no related allowance recorded	1,548	1,085	1,429
Average recorded investment, With no related allowance recorded	1,150	845	852
Interest income recognized, With no related allowance recorded		1	14
Recorded investment, With an allowance recorded	196	440	198
Unpaid principal, With an allowance recorded	196	443	198
Related allowance, With an allowance recorded	10	57	10
Average recorded investment, With an allowance recorded	197	557	341
Interest income recognized, With an allowance recorded	2	5	10
Consumer [Member] | Home Equity Loans [Member] | PNCI Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment, With no related allowance recorded	40	58	44
Unpaid principal, With no related allowance recorded	54	67	57
Average recorded investment, With no related allowance recorded	42	64	56
Recorded investment, With an allowance recorded	244		121
Unpaid principal, With an allowance recorded	244		121
Related allowance, With an allowance recorded	120		97
Average recorded investment, With an allowance recorded	183	19	61
Interest income recognized, With an allowance recorded	3		6
Consumer [Member] | Other Consumer [Member] | Originated Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment, With no related allowance recorded		5	4
Unpaid principal, With no related allowance recorded		6	52
Average recorded investment, With no related allowance recorded	2	12	10
Recorded investment, With an allowance recorded	4	21	3
Unpaid principal, With an allowance recorded	4	22	3
Related allowance, With an allowance recorded	4	14	3
Average recorded investment, With an allowance recorded	4	11	10
Consumer [Member] | Other Consumer [Member] | PNCI Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment, With no related allowance recorded	28	138
Unpaid principal, With no related allowance recorded	28	139
Average recorded investment, With no related allowance recorded	14	86	2
Interest income recognized, With no related allowance recorded		2
Recorded investment, With an allowance recorded	246	116	250
Unpaid principal, With an allowance recorded	246	116	250
Related allowance, With an allowance recorded	52	16	54
Average recorded investment, With an allowance recorded	248	175	184
Interest income recognized, With an allowance recorded	2	1	11
Consumer and Industrial [Member] | Originated Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment, With no related allowance recorded	881	1,289	575
Unpaid principal, With no related allowance recorded	894	1,312	585
Average recorded investment, With no related allowance recorded	728	932	668
Interest income recognized, With no related allowance recorded	9	7	18
Recorded investment, With an allowance recorded	3,740	1,783	3,895
Unpaid principal, With an allowance recorded	3,862	1,842	3,981
Related allowance, With an allowance recorded	2,113	811	1,848
Average recorded investment, With an allowance recorded	3,817	1,938	3,615
Interest income recognized, With an allowance recorded	17	14	166
Consumer and Industrial [Member] | PNCI Loans [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment, With no related allowance recorded		1
Construction [Member] | Residential [Member] | Originated Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment, With no related allowance recorded	136	11	140
Unpaid principal, With no related allowance recorded	136	16	140
Average recorded investment, With no related allowance recorded	138	7	76
Interest income recognized, With no related allowance recorded	$ 2		$ 9
Recorded investment, With an allowance recorded		14
Unpaid principal, With an allowance recorded		14
Related allowance, With an allowance recorded		14
Average recorded investment, With an allowance recorded		7
Construction [Member] | Commercial [Member] | PNCI Loans [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment, With no related allowance recorded		$ 245

XML

Allowance for Loan Losses - Troubled Debt Restructurings (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018 USD ($) SecurityLoan	Dec. 31, 2017 USD ($) SecurityLoan
Financing Receivable, Modifications [Line Items]
Number | SecurityLoan	3	26
Pre-mod outstanding principal balance	$ 638	$ 7,111
Post-mod outstanding principal balance	643	6,978
Financial impact due to TDR taken as additional provision	$ 11	$ 133
Number that defaulted during the period | SecurityLoan	1	5
Recorded investment of TDRs that defaulted during the period	$ 169	$ 624
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions		$ (5)
Mortgage Loans on Real Estate [Member] | Residential [Member]
Financing Receivable, Modifications [Line Items]
Number | SecurityLoan		1
Pre-mod outstanding principal balance		$ 939
Post-mod outstanding principal balance		939
Financial impact due to TDR taken as additional provision		$ 169
Number that defaulted during the period | SecurityLoan		2
Recorded investment of TDRs that defaulted during the period		$ 223
Mortgage Loans on Real Estate [Member] | Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number | SecurityLoan	1	8
Pre-mod outstanding principal balance	$ 384	$ 3,721
Post-mod outstanding principal balance	384	3,695
Financial impact due to TDR taken as additional provision	$ 11	$ (111)
Number that defaulted during the period | SecurityLoan	1	1
Recorded investment of TDRs that defaulted during the period	$ 169	$ 219
Consumer [Member] | Home Equity Lines of Credit [Member]
Financing Receivable, Modifications [Line Items]
Number | SecurityLoan	1	3
Pre-mod outstanding principal balance	$ 133	$ 187
Post-mod outstanding principal balance	$ 138	187
Financial impact due to TDR taken as additional provision		$ 27
Number that defaulted during the period | SecurityLoan		1
Recorded investment of TDRs that defaulted during the period		$ 127
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions		$ (5)
Consumer [Member] | Home Equity Loans [Member]
Financing Receivable, Modifications [Line Items]
Number | SecurityLoan	1	1
Pre-mod outstanding principal balance	$ 121	$ 252
Post-mod outstanding principal balance	$ 121	$ 252
Number that defaulted during the period | SecurityLoan		1
Recorded investment of TDRs that defaulted during the period		$ 55
Consumer [Member] | Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number | SecurityLoan		1
Pre-mod outstanding principal balance		$ 14
Post-mod outstanding principal balance		14
Financial impact due to TDR taken as additional provision		$ 11
Consumer and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number | SecurityLoan		11
Pre-mod outstanding principal balance		$ 1,854
Post-mod outstanding principal balance		1,747
Financial impact due to TDR taken as additional provision		$ 37
Construction [Member] | Residential [Member]
Financing Receivable, Modifications [Line Items]
Number | SecurityLoan		1
Pre-mod outstanding principal balance		$ 144
Post-mod outstanding principal balance		$ 144

XML

Foreclosed Assets - Summary of Activity in Balance of Foreclosed Assets (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) Assets	Mar. 31, 2017 USD ($) Assets
Schedule Of Foreclosed Assets Activity [Line Items]
Beginning balance, net	$ 3,226	$ 3,986
Additions/transfers from loans		85
Dispositions/sales	(1,572)	(608)
Valuation adjustments	(90)	66
Ending balance, net	1,564	3,529
Ending valuation allowance	$ (152)	$ (300)
Ending number of foreclosed assets | Assets	10	12
Proceeds from sale of foreclosed assets	$ 1,943	$ 726
Gain (loss) on sale of foreclosed assets	$ 371	118
Noncovered [Member]
Schedule Of Foreclosed Assets Activity [Line Items]
Beginning balance, net		3,763
Additions/transfers from loans		85
Dispositions/sales		(385)
Valuation adjustments		66
Ending balance, net		3,529
Ending valuation allowance		$ (300)
Ending number of foreclosed assets | Assets		12
Proceeds from sale of foreclosed assets		$ 510
Gain (loss) on sale of foreclosed assets		125
Covered [Member]
Schedule Of Foreclosed Assets Activity [Line Items]
Beginning balance, net		223
Dispositions/sales		(223)
Proceeds from sale of foreclosed assets		216
Gain (loss) on sale of foreclosed assets		$ (7)

XML

Foreclosed Assets - Additional Information (Detail) - USD ($)	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Schedule Of Foreclosed Assets Activity [Line Items]
Foreclosed assets	$ 1,564,000	$ 3,226,000	$ 3,529,000	$ 3,986,000
Residential Real Estate [Member]
Schedule Of Foreclosed Assets Activity [Line Items]
Foreclosed assets	836,000
Formal foreclosure proceedings	$ 407,000

XML

Premises and Equipment - Summary of Premises and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment, Net, by Type [Abstract]
Land & land improvements	$ 9,959	$ 9,959
Buildings	50,792	50,340
Furniture and equipment	37,348	35,939
Premises and equipment, gross	98,099	96,238
Less: Accumulated depreciation	(41,678)	(40,644)
Premises and equipment less depreciation, gross	56,421	55,594
Construction in progress	2,137	2,148
Total premises and equipment	$ 58,558	$ 57,742

XML

Premises and Equipment - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Property, Plant and Equipment [Abstract]
Depreciation expense for premises and equipment	$ 1,371,000	$ 1,311,000

XML

Cash Value of Life Insurance - Summary of Activity in Balance of Cash Value of Life Insurance (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) Policies Employees Company	Mar. 31, 2017 USD ($) Policies Employees Company
Increase (Decrease) in Insurance Liabilities [Abstract]
Beginning balance	$ 97,783	$ 95,912
Increase in cash value of life insurance	608	685
Gain on death benefit		107
Insurance proceeds receivable reclassified to other assets		(921)
Ending balance	98,391	95,783
End of period death benefit	$ 159,640	$ 164,574
Number of policies owned | Policies	182	183
Insurance companies used | Company	14	14
Current and former employees and directors covered | Employees	57	58

XML

Cash Value of Life Insurance - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018 Policies Company	Mar. 31, 2017 Company
Insurance [Abstract]
Number of life insurance policies owned by the Company	182
Insurance companies used | Company	14	14
Policies covering current and former employees and directors	57

XML

Goodwill and Other Intangible Assets - Summary of Goodwill Intangible (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Ending Balance	$ 64,311
Goodwill, Additions	0
Goodwill, Reductions	0
Goodwill, Beginning Balance	$ 64,311

XML

Goodwill and Other Intangible Assets - Summary of Core Deposit Intangibles (Detail) - Core Deposit Intangibles [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Finite-Lived Intangible Assets [Line Items]
Core deposit intangibles, Beginning balance	$ 9,558
Core deposit intangibles, Reductions/Amortization	0
Core deposit intangibles, Additions	0
Core deposit intangibles, Ending balance	9,558
Accumulated amortization, Beginning balance	(4,384)
Accumulated amortization, Reductions/Amortization	(339)
Accumulated amortization, Additions	0
Accumulated amortization, Ending balance	(4,723)
Core deposit intangibles, net, Beginning balance	5,174
Core deposit intangibles, net, Reductions/Amortization	(339)
Core deposit intangibles, net, Additions	0
Core deposit intangibles, net, Ending balance	$ 4,835

XML

Goodwill and Other Intangible Assets - Additional Information (Detail)	Mar. 18, 2016 USD ($) Branches	Oct. 03, 2014 USD ($)	Sep. 23, 2011 USD ($)
North Valley Bancorp [Member]
Finite-Lived Intangible Assets [Line Items]
Additions to core deposit intangibles		$ 6,614,000
Citizens [Member]
Finite-Lived Intangible Assets [Line Items]
Additions to core deposit intangibles			$ 898,000
Bank of America [Member]
Finite-Lived Intangible Assets [Line Items]
Additions to core deposit intangibles	$ 2,046,000
Number of branches | Branches	3

XML

Goodwill and Other Intangible Assets - Remaining Estimated Core Deposit Intangible Amortization (Detail) - Core Deposit Intangibles [Member] $ in Thousands	Mar. 31, 2018 USD ($)
Finite-Lived Intangible Assets [Line Items]
2018	$ 1,324
2019	1,228
2020	1,228
2021	969
2022	280
Thereafter	$ 145

XML

Mortgage Servicing Rights - Fair Value of Mortgage Servicing Rights (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Servicing Assets at Fair Value [Line Items]
Contractually specified servicing fees, late fees and ancillary fees earned	$ 517	$ 521
Weighted-average prepayment speed (CPR)	7.50%	8.30%
Weighted-average discount rate	13.00%	14.00%
Mortgage Servicing Rights [Member]
Servicing Assets at Fair Value [Line Items]
Balance at beginning of period	$ 6,687	$ 6,595	$ 6,595
Additions	155	278
Change in fair value	111	(13)
Balance at end of period	6,953	6,860	6,687
Loans [Member]
Servicing Assets at Fair Value [Line Items]
Balance at beginning of period	811,065	816,623	816,623
Balance at end of period	$ 806,478	$ 822,506	$ 811,065

XML

Indemnification Asset - Summary of Activity in Balance of Indemnification Asset (Detail) - USD ($) $ in Thousands		3 Months Ended
	May 09, 2017	Mar. 31, 2017
FDIC Indemnification Asset [Roll Forward]
Beginning balance		$ (744)
Effect of actual and estimated future covered losses and recoveries		(191)
Reimbursable (revenue) expenses incurred		(32)
Payments made to (received from) FDIC	$ (184)	72
Ending balance		(895)
Amount of indemnification liability recorded in other assets		(179)
Amount of indemnification liability recorded in other liabilities		(716)
Ending balance		$ (895)

XML

Indemnification Asset - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended
	May 09, 2017	Mar. 31, 2017
Fdic Indemnification Asset [Abstract]
Payment made to FDIC	$ 184	$ (72)
Gain on termination of loss share agreement	$ 712

XML

Other Assets - Summary of Other Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred tax asset, net	$ 26,266	$ 21,697
Investment in low income housing tax credit funds	17,095	16,854
Prepaid expense	4,411	4,111
Tax refund receivable	4,754	4,754
Capital trusts	1,709	1,706
Software	883	1,126
Life insurance proceeds receivable		2,242
Miscellaneous other assets	1,156	2,561
Total other assets	$ 56,274	$ 55,051

XML

Deposits - Summary of Balances of Deposits (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Deposits [Abstract]
Noninterest-bearing demand	$ 1,359,996	$ 1,368,218
Interest-bearing demand	1,022,299	971,459
Savings	1,395,481	1,364,518
Time certificates, over $250,000	76,306	73,596
Other time certificates	230,322	231,340
Total deposits	$ 4,084,404	$ 4,009,131

XML

Deposits - Additional Information (Detail) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Schedule Of Deposits [Line Items]
Overdrawn deposit balances classified as consumer loans	$ 1,085,000	$ 1,366,000
California [Member]
Schedule Of Deposits [Line Items]
Certificate of deposits, included in time certificates $250,000 and over	$ 50,000,000	$ 50,000,000

XML

Reserve for Unfunded Commitments - Summary of Activity in Reserve for Unfunded Commitments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Balance at beginning of period	$ 3,164	$ 2,719
Change in reserve for unfunded commitments	700	15
Balance at end of period	$ 3,864	$ 2,734

XML

Other Liabilities - Components of Other Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Other Liabilities Disclosure [Abstract]
Pension liability	$ 28,686	$ 28,472
Low income housing tax credit fund commitments	7,677	8,554
Deferred compensation	6,809	6,605
Taxes payable	5,243
Accrued salaries and benefits expense	5,180	6,619
Joint beneficiary agreements	3,429	3,365
Loan escrow and servicing payable	1,464	1,958
Deferred revenue	1,077	1,228
Litigation contingency		1,450
Miscellaneous other liabilities	3,964	5,007
Total other liabilities	$ 63,529	$ 63,258

XML

Other Borrowings - Summary of Balances of Other Borrowings (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total other borrowings	$ 65,041	$ 122,166
1.87% Fixed Rate FHLB Collateralized Borrowings [Member]
Debt Instrument [Line Items]
Collateralized borrowings	48,000
1.38% Fixed Rate FHLB Collateralized Borrowings [Member]
Debt Instrument [Line Items]
Collateralized borrowings		104,729
0.05% Fixed Rate Collateralized Borrowings [Member]
Debt Instrument [Line Items]
Collateralized borrowings	$ 17,041	$ 17,437

XML

Other Borrowings - Summary of Balances of Other Borrowings (Parenthetical) (Detail)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
1.87% Fixed Rate FHLB Collateralized Borrowings [Member]
Debt Instrument [Line Items]
Collateralized borrowing, fixed rate	1.87%
Collateralized borrowing, maturity date	Apr. 02, 2018
1.38% Fixed Rate FHLB Collateralized Borrowings [Member]
Debt Instrument [Line Items]
Collateralized borrowing, fixed rate		1.38%
Collateralized borrowing, maturity date		Jan. 02, 2018
0.05% Fixed Rate Collateralized Borrowings [Member]
Debt Instrument [Line Items]
Collateralized borrowing, fixed rate	0.05%	0.05%
Collateralized borrowing, maturity date	Apr. 02, 2018	Jan. 02, 2018

XML

Other Borrowings - Additional Information (Detail) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Schedule Of Borrowings [Line Items]
Security repurchase agreement	$ 0	$ 0
FHLB collateral line of credit, maximum borrowings capacity	1,597,695,000
FHLB collateral line of credit, outstanding balance	48,000,000
FHLB collateral line of credit, remaining borrowing capacity	1,549,695,000
Loans designated as potential collateral under collateralized line of credit with FHLB	205,777,000
Investment securities designated as potential collateral under collateral line of credit	2,138,150,000
Repurchase investment securities sold and pledged as collateral under securities repurchase agreement	31,667,000
Collateralized line of credit with San Francisco Federal Reserve Bank, maximum borrowings capacity	140,921,000
Collateralized line of credit with San Francisco Federal Reserve Bank, outstanding balance	0
Collateralized line of credit with San Francisco Federal Reserve Bank, remaining borrowing capacity	140,921,000
Investment securities designated as potential collateral under collateral line of credit with San Francisco Federal Reserve Bank	15,677
Loans designated as potential collateral under collateral line of credit with San Francisco Federal Reserve Bank	262,663,000
Unused correspondent banking lines of credit from commercial banks for federal funds	20,000,000
0.05% Fixed Rate Collateralized Borrowings [Member]
Schedule Of Borrowings [Line Items]
Collateralized borrowings	$ 17,041,000	$ 17,437,000

XML

Junior Subordinated Debt - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018 USD ($) Location Trust	Dec. 31, 2017 USD ($)	Oct. 03, 2014 USD ($)
Class of Stock [Line Items]
Number of subsidiary business trusts | Trust	5
Trust preferred securities amount	$ 62,889,000
Subordinated debenture, recorded fair value	$ 56,905,000	$ 56,858,000
Number of locations organized | Location	2
Change in junior subordinated debt	$ 47,000
Capital Trusts [Member]
Class of Stock [Line Items]
Trust preferred securities amount	62,900,000
North Valley Trust II [Member]
Class of Stock [Line Items]
Trust preferred securities amount	6,186,000
Subordinated debenture, recorded fair value	5,145,000	5,135,000	$ 5,006,000
North Valley Trust III [Member]
Class of Stock [Line Items]
Trust preferred securities amount	5,155,000
Subordinated debenture, recorded fair value	4,050,000	4,041,000	3,918,000
North Valley Trust IV [Member]
Class of Stock [Line Items]
Trust preferred securities amount	10,310,000
Subordinated debenture, recorded fair value	$ 6,472,000	$ 6,444,000	$ 6,063,000
North Valley Bancorp [Member]
Class of Stock [Line Items]
Number of locations acquired | Location	3
Acquisition, completion date	Oct. 03, 2014
Maximum [Member]
Class of Stock [Line Items]
Consecutive payments of interest on debenture defer Period	5 years

XML

Junior Subordinated Debt - Summary of Terms and Recorded Balance of Subordinated Debenture (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Oct. 03, 2014
Subordinated Borrowing [Line Items]
Subordinated debenture, Face Value	$ 62,889,000
Subordinated debenture, Recorded Book Value	$ 56,905,000	$ 56,858,000
TriCo Capital Trust I [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Maturity Date	Oct. 07, 2033
Subordinated debenture, Face Value	$ 20,619,000
Subordinated debenture, Current Coupon Rate	4.77%
Subordinated debenture, Recorded Book Value	$ 20,619,000	20,619,000
TriCo Capital Trust II [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Maturity Date	Jul. 23, 2034
Subordinated debenture, Face Value	$ 20,619,000
Subordinated debenture, Current Coupon Rate	4.29%
Subordinated debenture, Recorded Book Value	$ 20,619,000	20,619,000
North Valley Trust II [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Maturity Date	Apr. 24, 2033
Subordinated debenture, Face Value	$ 6,186,000
Subordinated debenture, Current Coupon Rate	5.02%
Subordinated debenture, Recorded Book Value	$ 5,145,000	5,135,000	$ 5,006,000
North Valley Trust III [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Maturity Date	Apr. 24, 2034
Subordinated debenture, Face Value	$ 5,155,000
Subordinated debenture, Current Coupon Rate	4.54%
Subordinated debenture, Recorded Book Value	$ 4,050,000	4,041,000	3,918,000
North Valley Trust IV [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Maturity Date	Mar. 15, 2036
Subordinated debenture, Face Value	$ 10,310,000
Subordinated debenture, Current Coupon Rate	3.45%
Subordinated debenture, Recorded Book Value	$ 6,472,000	$ 6,444,000	$ 6,063,000
LIBOR PLUS [Member] | TriCo Capital Trust I [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Coupon Rate	3.05%
LIBOR PLUS [Member] | TriCo Capital Trust II [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Coupon Rate	2.55%
LIBOR PLUS [Member] | North Valley Trust II [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Coupon Rate	3.25%
LIBOR PLUS [Member] | North Valley Trust III [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Coupon Rate	2.80%
LIBOR PLUS [Member] | North Valley Trust IV [Member]
Subordinated Borrowing [Line Items]
Subordinated debenture, Coupon Rate	1.33%

XML

Commitments and Contingencies - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018 USD ($) site $ / shares shares	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($) shares	Aug. 21, 2007 shares
Conversion of Stock [Line Items]
Reserves to satisfy Federal regulatory requirements	$ 91,860,000		$ 82,068,000
Number of sites leased under non-cancelable operating leases | site	41
Rent expense under operating leases	$ 921,000	$ 1,047,000
Rent expense offset by rent income	$ 10,000	$ 13,000
Commitment expiration date	One year or less or other termination clauses and may require payment of a fee.
Letters of credit, issue period	One year or less
Overdraft privilege receivable criteria	All holders of such accounts who bring their accounts to a positive balance at least once every thirty days receive the overdraft privilege.
Class B common stock of Visa Inc. | shares	22,956,323		22,955,963	15,814,662
Conversion ratio	1.648265
Common Class B [Member]
Conversion of Stock [Line Items]
Class B common stock of Visa Inc. | shares	13,396
Common Class A [Member]
Conversion of Stock [Line Items]
The value of the Class A shares | $ / shares	$ 119.62
Value of unredeemed Class A equivalent shares	$ 2,641,000

XML

Commitments and Contingencies - Future Minimum Commitments under Non-Cancelable Operating Leases with Initial or Remaining Terms of One Year or More (Detail) $ in Thousands	Dec. 31, 2017 USD ($)
Leases [Abstract]
2018	$ 3,278
2019	2,499
2020	1,847
2021	1,488
2022	757
Thereafter	798
Future minimum lease payments	$ 10,667

XML

Commitments and Contingencies - Summary of Company's Commitments and Contingent Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit
Construction [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	236,650	187,097
RE Mortgage [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	73,618	66,267
Standby Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	11,573	13,075
Commercial [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	253,001	257,220
Consumer Loans [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	437,790	422,958
Deposit Account Overdraft Privilege [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	$ 101,411	$ 98,260

XML

Shareholders' Equity - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Aug. 21, 2007
Class of Stock [Line Items]
Repurchase of common stock					500,000
Stock repurchase plan percentage of common stock					3.20%
Common stock, shares outstanding	22,956,323		22,955,963		15,814,662
Repurchased shares outstanding	166,600
Market value of common stock	$ 4,000	$ 604,000
Maximum [Member]
Class of Stock [Line Items]
Cash dividend payable by bank			$ 85,254,000
Tri Counties Bank [Member]
Class of Stock [Line Items]
Cash dividends received	$ 4,372,000	$ 4,042,000
Common Stock [Member]
Class of Stock [Line Items]
Common stock, shares outstanding	22,956,323	22,873,305	22,955,963	22,867,802
Company's common stock in lieu of cash to exercise options to purchase shares	134	16,251
Market value of common stock	$ 4,000	$ 604,000

XML

Stock Options and Other Equity-Based Incentive Instruments - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding options under the plan	446,400	446,400
Options currently not exercisable yet expected to vest	22,800
Weighted-average remaining contractual term	6 months
Pre-tax compensation costs expected to recognize	$ 61,000
Restricted Stock Units (RSUs) [Member] | Service Condition Vesting RSUs [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units outstanding expected to vest	68,273	68,457
Weighted-average remaining contractual term	1 year
Pre-tax compensation costs	$ 1,211,000
Number of units released	494
Restricted Stock Units (RSUs) [Member] | Market Plus Service Condition Vesting RSUs [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units outstanding expected to vest	52,829	52,829
Weighted-average remaining contractual term	1 year 2 months 12 days
Pre-tax compensation costs	$ 608,000
Minimum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Maximum aggregate number of shares of TriCo's common stock issued	650,000
Minimum [Member] | Restricted Stock Units (RSUs) [Member] | Market Plus Service Condition Vesting RSUs [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units released	0
Maximum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Maximum aggregate number of shares of TriCo's common stock issued	1,650,000
Maximum [Member] | Restricted Stock Units (RSUs) [Member] | Market Plus Service Condition Vesting RSUs [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units released	79,244
2009 Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of shares to be reduced pursuant to stock option for computation of available number of shares for issuance	1
Number of shares to be reduced pursuant to restricted stock award for computation of available number of shares for issuance	2
Outstanding options under the plan	446,400
Options available for grant under the plan	526,418
2009 Plan [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of units outstanding expected to vest	121,102
2001 Plan [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding options under the plan	34,500
Options available for grant under the plan	0
Share based compensation grant expiry period	10 years

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Stock Options and Other Equity-Based Incentive Instruments - Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Number of Shares, beginning balance	446,400
Options granted, Number of Shares	0
Options exercised, Number of Shares	0
Options forfeited, Number of Shares	0
Options outstanding, Number of Shares, ending balance	446,400
Options outstanding, Weighted Average Exercise Price, beginning balance	$ 16.84
Options granted, Weighted Average Exercise Price	0
Options exercised, Weighted Average Exercise Price	0
Options forfeited, Weighted Average Exercise Price	0
Options outstanding, Weighted Average Exercise Price, ending balance	$ 16.84
Options Outstanding, Value on Date of Grant	$ 0	$ 0
Options granted, Weighted Average Fair Value	$ 0
Minimum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Option Price per Share, beginning balance	12.63
Options granted, Option Price per Share	0
Options exercised, Option Price per Share	0
Options forfeited, Option Price per Share	0
Options outstanding, Option Price per Share, ending balance	12.63
Maximum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options outstanding, Option Price per Share, beginning balance	23.21
Options granted, Option Price per Share	0
Options exercised, Option Price per Share	0
Options forfeited, Option Price per Share	0
Options outstanding, Option Price per Share, ending balance	$ 23.21

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Stock Options and Other Equity-Based Incentive Instruments - Summary of Options Outstanding (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options	446,400	446,400
Weighted average exercise price	$ 16.84	$ 16.84
Intrinsic value (in thousands)	$ 9,096
Weighted average remaining contractual term (yrs.)	3 years 8 months 12 days
Currently Exercisable [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options	423,600
Weighted average exercise price	$ 16.65
Intrinsic value (in thousands)	$ 8,713
Weighted average remaining contractual term (yrs.)	3 years 7 months 6 days
Currently Not Exercisable [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options	22,800
Weighted average exercise price	$ 20.45
Intrinsic value (in thousands)	$ 382
Weighted average remaining contractual term (yrs.)	5 years 6 months

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Stock Options and Other Equity-Based Incentive Instruments - Restricted Stock Unit (RSU) Activity (Detail) - Restricted Stock Units (RSUs) [Member]	3 Months Ended
	Mar. 31, 2018 $ / shares shares
Market Plus Service Condition Vesting RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs outstanding, Number of RSUs, beginning balance	52,829
RSUs granted, Number of RSUs	0
RSUs forfeited/expired, Number of RSUs	0
RSUs outstanding, Number of RSUs, ending balance	52,829
RSUs granted, Weighted Average Fair Value on Date of Grant | $ / shares	$ 0
Service Condition Vesting RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSUs outstanding, Number of RSUs, beginning balance	68,457
RSUs granted, Number of RSUs	0
RSUs added through dividend credits, Number of RSUs	310
RSUs released, Number of RSUs	(494)
RSUs forfeited/expired, Number of RSUs	0
RSUs outstanding, Number of RSUs, ending balance	68,273
RSUs granted, Weighted Average Fair Value on Date of Grant | $ / shares	$ 0

XML

Noninterest Income and Expense - Components of Other Noninterest Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017
Income Statement [Abstract]
Service charges on deposit accounts	$ 3,779				$ 3,619
ATM and interchange fees	4,235				4,015
Other service fees	714				765
Mortgage banking service fees	517				521
Change in value of mortgage servicing rights	111				(13)
Total service charges and fees	9,356				8,907
Commissions on sale of non-deposit investment products	876				607
Gain on sale of loans	626				910
Increase in cash value of life insurance	608				685
Gain on sale of foreclosed assets	371				118
Lease brokerage income	128				206
Sale of customer checks	101				104
Change in indemnification asset					(221)
Life insurance proceeds in excess of cash value					107
Loss on disposal of fixed assets	(13)
Loss on marketable equity securities	(47)
Other	284				280
Total other noninterest income	2,934				2,796
Total noninterest income	$ 12,290	$ 12,478	$ 12,930	$ 12,910	$ 11,703

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Noninterest Income and Expense - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Mortgage loan servicing fees, net of change in fair value of mortgage loan servicing rights	$ 628,000	$ 508,000

XML

Noninterest Income and Expense - Components of Noninterest Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017
Schedule Of Other Noninterest Income And Expense [Line Items]
Base salaries, net of deferred loan origination costs	$ 13,962				$ 13,390
Incentive compensation	2,452				2,198
Benefits and other compensation costs	5,238				5,305
Total salaries and benefits expense	21,652				20,893
Occupancy	2,681				2,692
Data processing and software	2,514				2,396
Equipment	1,551				1,723
ATM and POS network charges	1,226				853
Advertising	838				967
Professional fees	773				766
Telecommunications	701				643
Change in reserve for unfunded commitments	700				15
Merger and acquisition expense	476
Assessments	430				405
Postage	358				404
Intangible amortization	339				359
Operational losses	294				435
Courier service	267				254
Provision for (reversal of) foreclosed asset losses	90				(66)
Foreclosed assets expense	24				38
Other miscellaneous expense	3,248				3,045
Total other noninterest expense	16,510				14,929
Total noninterest expense	38,162	$ 38,076	$ 37,222	$ 35,904	$ 35,822
Total merger and acquisition expense	476
North Valley Bancorp [Member]
Schedule Of Other Noninterest Income And Expense [Line Items]
Professional fees	355
Advertising and marketing	8
Other miscellaneous expense	$ 112

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Income Taxes - Reconciliation of Effective Tax Rate and Statutory Federal Income Tax Rate (Detail)	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	21.00%	35.00%	35.00%
State income taxes, net of federal tax benefit	9.00%	6.90%
Tax-exempt interest on municipal obligations	(1.10%)	(1.90%)
Increase in cash value of insurance policies	(0.70%)	(1.40%)
Low income housing tax credits	(1.00%)	(0.60%)
Equity compensation		(0.50%)
Nondeductible merger expenses	0.40%
Nondeductible joint beneficiary agreement expense	0.10%	0.10%
Other	0.40%	0.20%
Effective Tax Rate	28.10%	37.80%

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Earnings Per Share - Computation of Earnings Per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017
Earnings Per Share [Abstract]
Net income	$ 13,910	$ 2,989	$ 11,897	$ 13,589	$ 12,079
Average number of common shares outstanding	22,956				22,870
Effect of dilutive stock options and restricted stock	327				362
Average number of common shares outstanding used to calculate diluted earnings per share	23,283				23,232
Options excluded from diluted earnings per share because the effect of these options was antidilutive	0				0

XML

Comprehensive Income - Components of Other Comprehensive Income and Related Tax Effects (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrealized holding gains (losses) on available for sale securities before reclassifications	$ (15,265)	$ 787
Amounts reclassified out of accumulated other comprehensive income:
Total amounts reclassified out of accumulated other comprehensive income	(363)
Unrealized holding gains (losses) on available for sale securities after reclassifications	(15,628)	787
Tax effect	4,602	(330)
Unrealized holding gains (losses) on available for sale securities, net of tax	(11,026)	457
Change in unfunded status of the supplemental retirement plans before reclassifications	667
Amounts reclassified out of accumulated other comprehensive income:
Amortization of prior service cost	(13)	(3)
Amortization of actuarial losses	127	96
Total amounts reclassified out of accumulated other comprehensive income	(554)	93
Change in unfunded status of the supplemental retirement plans after reclassifications	113	93
Tax effect	(33)	(39)
Change in unfunded status of the supplemental retirement plans, net of tax	80	54
Change in joint beneficiary agreement liability before reclassifications	0	0
Amounts reclassified out of accumulated other comprehensive income	0	0
Change in joint beneficiary agreement liability after reclassifications	0	0
Tax effect	0	0
Change in joint beneficiary agreement liability, net of tax	0	0
Other comprehensive income (loss)	(10,946)	$ 511
ASU 2016-01 [Member]
Amounts reclassified out of accumulated other comprehensive income:
Total amounts reclassified out of accumulated other comprehensive income	62
ASU 2018-02 [Member]
Amounts reclassified out of accumulated other comprehensive income:
Total amounts reclassified out of accumulated other comprehensive income	(425)
Amounts reclassified out of accumulated other comprehensive income:
Total amounts reclassified out of accumulated other comprehensive income	$ (668)

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Comprehensive Income - Components of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	$ (17,205)	$ (5,228)	$ (7,402)
Net Unrealized Loss on Available For Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, before tax	(18,975)		(8,083)
Accumulated other comprehensive loss, tax effect	5,610		3,399
Accumulated other comprehensive loss	(13,365)		(4,684)
Unfunded Status of Supplemental Retirement Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, before tax	(5,238)		(4,621)
Accumulated other comprehensive loss, tax effect	1,549		1,943
Accumulated other comprehensive loss	(3,689)		(2,678)
Joint Beneficiary Agreement Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, before tax	(151)		(40)
Accumulated other comprehensive loss	$ (151)		$ (40)

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Retirement Plans - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Salaries & benefits expense	$ 21,652,000	$ 20,893,000
Employee service period under ESOP	1 year
Contribution and paid out as benefits under ESOP	$ 465,000	525,000
Deferred compensation obligations	6,809,000			$ 6,605,000
Earnings credits on deferred balances included in noninterest expense	$ 124,000	145,000
401(k) Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discretionary matching contribution equal to percentage of participant's contribution	50.00%
Discretionary matching contribution maximum percentage of eligible compensation	4.00%
Salaries & benefits expense	$ 203,000	186,000
Employer's contribution to retirement plan	199,000	179,000
Supplemental Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer's contribution to retirement plan	$ 267,000	$ 259,000
Supplemental Retirement Plans [Member] | Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer's contribution to retirement plan			$ 1,106,000

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Retirement Plans - Net Periodic Benefit Cost Recognized for Supplemental Retirement Plans (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net pension cost included the following components:
Service cost-benefits earned during the period	$ 243	$ 235
Interest cost on projected benefit obligation	237	249
Amortization of net obligation at transition	1	1
Amortization of prior service cost	(13)	(3)
Recognized net actuarial loss	127	96
Net periodic pension cost	$ 595	$ 578

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Related Party Transactions - Summary of Activity in Lending Transactions (Detail) - Directors and Officers [Member] - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Beginning balance	$ 2,148	$ 2,432
Advances/new loans	145	437
Removed/payments	(314)	(721)
Ending balance	$ 1,979	$ 2,148

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Related Party Transactions - Additional Information (Detail) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Related Party Transactions [Abstract]
Bank deposits of directors, officers and other related parties	$ 30,871,000	$ 46,025,000

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Fair Value Measurement - Recorded Amount of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value Measurements on Recurring Basis [Member] - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 745,738	$ 737,570
Marketable Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,890	2,938
Obligations of U.S. Government Corporations and Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	616,657	604,789
Obligations of States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	119,238	123,156
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,890	2,938
Level 1 [Member] | Marketable Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,890	2,938
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	735,895	727,945
Level 2 [Member] | Obligations of U.S. Government Corporations and Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	616,657	604,789
Level 2 [Member] | Obligations of States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	119,238	123,156
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	6,953	6,687
Mortgage Servicing Rights [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	6,953	6,687
Mortgage Servicing Rights [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 6,953	$ 6,687

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Fair Value Measurement - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Transfers between level 1 to level 2, Assets	$ 0	$ 0
Transfers between level 2 to level 1, Assets	0	0
Transfers between level 1 to level 2, Liabilities	0	0
Transfers between level 2 to level 1, Liabilities	0	0
Transfer into level 3	0	0
Transfer out of level 3	0	$ 0
Carrying value of loans fully charged-off	$ 0

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Fair Value Measurement - Reconciliation of Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3) on Recurring Basis (Detail) - Mortgage Servicing Rights [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 6,687	$ 6,595
Transfers into (out of) Level 3	0	0
Change Included in Earnings	111	(13)
Issuances	155	278
Ending Balance	$ 6,953	$ 6,860

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Fair Value Measurement - Quantitative Information about Recurring Level 3 Fair Value Measurements (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Constant prepayment rate	7.50%	8.30%
Discount rate	13.00%	14.00%
Mortgage Servicing Rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Mortgages Servicing Rights, Fair Value	$ 6,953	$ 6,860	$ 6,687	$ 6,595
Minimum [Member] | Mortgage Servicing Rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	11.00%		13.00%
Minimum [Member] | Mortgage Servicing Rights [Member] | Discounted Cash Flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Constant prepayment rate	6.00%		6.20%
Maximum [Member] | Mortgage Servicing Rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	15.00%		15.00%
Maximum [Member] | Mortgage Servicing Rights [Member] | Discounted Cash Flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Constant prepayment rate	19.70%		22.00%
Weighted Average [Member] | Mortgage Servicing Rights [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	13.00%		13.00%
Weighted Average [Member] | Mortgage Servicing Rights [Member] | Discounted Cash Flow [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Constant prepayment rate	7.50%		8.90%

XML

Fair Value Measurement - Assets and Liabilities Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Impaired Originated & PNCI Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 2,103		$ 2,767
Fair Value Nonrecurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,877	$ 2,352	4,984
Total Gains/(Losses)	(882)	8	(1,587)
Fair Value Nonrecurring Basis [Member] | Impaired Originated & PNCI Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,103	824	2,767
Total Gains/(Losses)	(795)	30	(1,452)
Fair Value Nonrecurring Basis [Member] | Foreclosed Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	774	1,528	2,217
Total Gains/(Losses)	(87)	(22)	(135)
Fair Value Nonrecurring Basis [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,877	2,352	4,984
Fair Value Nonrecurring Basis [Member] | Level 3 [Member] | Impaired Originated & PNCI Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,103	824	2,767
Fair Value Nonrecurring Basis [Member] | Level 3 [Member] | Foreclosed Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 774	$ 1,528	$ 2,217

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Fair Value Measurement - Quantitative Information about Level 3 Fair Value Measurements for Financial Instruments Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Impaired Originated & PNCI Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 2,103	$ 2,767
Foreclosed Assets [Member] | Land & Construction [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	190	1,341
Foreclosed Assets [Member] | Residential Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	492	622
Foreclosed Assets [Member] | Commercial Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 92	$ 254

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Fair Value Measurement - Estimated Fair Values of Financial Instruments that are Reported at Amortized Cost in Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financial assets:
Cash and due from banks	$ 87,138	$ 105,968
Cash at Federal Reserve and other banks	95,841	99,460
Securities held to maturity	496,035	514,844
Financial liabilities:
Other borrowings	65,041	122,166
Junior subordinated debt	56,905	56,858
Level 3 [Member] | Overdraft Privilege Commitments [Member]
Off-balance sheet:
Contract amount, Off-balance sheet	101,411	98,260
Level 3 [Member] | Standby Letters of Credit [Member]
Off-balance sheet:
Contract amount, Off-balance sheet	11,573	13,075
Level 3 [Member] | Commitments [Member]
Off-balance sheet:
Contract amount, Off-balance sheet	1,001,059	933,542
Fair Value [Member] | Level 3 [Member]
Financial assets:
Loans, net	3,025,636	2,992,225
Financial liabilities:
Junior subordinated debt	59,982	58,466
Fair Value [Member] | Level 3 [Member] | Overdraft Privilege Commitments [Member]
Off-balance sheet:
Fair value, Off-balance sheet	1,014	983
Fair Value [Member] | Level 3 [Member] | Standby Letters of Credit [Member]
Off-balance sheet:
Fair value, Off-balance sheet	116	131
Fair Value [Member] | Level 3 [Member] | Commitments [Member]
Off-balance sheet:
Fair value, Off-balance sheet	10,011	9,335
Fair Value [Member] | Level 1 [Member]
Financial assets:
Cash and due from banks	87,138	105,968
Cash at Federal Reserve and other banks	95,841	99,460
Fair Value [Member] | Level 2 [Member]
Financial assets:
Securities held to maturity	488,639	518,165
Loans held for sale	2,149	4,616
Financial liabilities:
Deposits	4,081,089	4,006,620
Other borrowings	65,041	122,166
Carrying Amount [Member] | Level 3 [Member]
Financial assets:
Loans, net	3,039,760	2,984,842
Financial liabilities:
Junior subordinated debt	56,905	56,858
Carrying Amount [Member] | Level 1 [Member]
Financial assets:
Cash and due from banks	87,138	105,968
Cash at Federal Reserve and other banks	95,841	99,460
Carrying Amount [Member] | Level 2 [Member]
Financial assets:
Securities held to maturity	496,035	514,844
Restricted equity securities	16,956	16,956
Loans held for sale	2,149	4,616
Financial liabilities:
Deposits	4,084,404	4,009,131
Other borrowings	$ 65,041	$ 122,166

XML

TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents	$ 182,979	$ 205,428	$ 323,706	$ 305,612
Other assets	56,274	55,051
Total assets	4,779,957	4,761,315
Liabilities and shareholders' equity
Other liabilities	63,529	63,258
Junior subordinated debt	56,905	56,858
Total liabilities	4,274,701	4,255,507
Shareholders' equity:
Preferred stock, no par value: 1,000,000 shares authorized, zero issued and outstanding at March 31, 2018 and December 31, 2017
Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 22,956,323 and 22,955,963 shares, respectively	256,226	255,836
Retained earnings	266,235	255,200
Accumulated other comprehensive loss, net	(17,205)	(5,228)	(7,402)
Total shareholders' equity	505,256	505,808	486,718	477,347
Total liabilities and shareholders' equity	4,779,957	4,761,315
Parent [Member]
Assets
Cash and cash equivalents	3,516	3,924	$ 2,840	$ 2,802
Investment in Tri Counties Bank	557,380	557,538
Other assets	1,758	1,721
Total assets	562,654	563,183
Liabilities and shareholders' equity
Other liabilities	493	517
Junior subordinated debt	56,905	56,858
Total liabilities	57,398	57,375
Shareholders' equity:
Preferred stock, no par value: 1,000,000 shares authorized, zero issued and outstanding at March 31, 2018 and December 31, 2017
Common stock, no par value: authorized 50,000,000 shares; issued and outstanding 22,956,323 and 22,955,963 shares, respectively	256,226	255,836
Retained earnings	266,235	255,200
Accumulated other comprehensive loss, net	(17,205)	(5,228)
Total shareholders' equity	505,256	505,808
Total liabilities and shareholders' equity	$ 562,654	$ 563,183

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TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Balance Sheets (Parenthetical) (Detail) - $ / shares	Mar. 31, 2018	Dec. 31, 2017	Aug. 21, 2007
Condensed Financial Statements, Captions [Line Items]
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	22,956,323	22,955,963
Common stock, shares outstanding	22,956,323	22,955,963	15,814,662
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	22,956,323	22,955,963
Common stock, shares outstanding	22,956,323	22,955,963

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TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Interest expense	$ (2,135)	$ (1,868)	$ (1,829)	$ (1,610)	$ (1,491)
Income before income taxes	19,350	17,818	19,027	21,236	19,431
Equity in net income of Tri Counties Bank:
Income tax benefit	(5,440)	(14,829)	(7,130)	(7,647)	(7,352)
Net income	13,910	$ 2,989	$ 11,897	$ 13,589	12,079
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Interest expense	(697)				(595)
Administration expense	(426)				(159)
Income before income taxes	(1,123)				(754)
Equity in net income of Tri Counties Bank:
Distributed	4,372				4,042
Undistributed	10,397				8,474
Income tax benefit	264				317
Net income	$ 13,910				$ 12,079

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TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Net income	$ 13,910	$ 2,989	$ 11,897	$ 13,589	$ 12,079
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on available for sale securities arising during the period	(11,026)				457
Change in minimum pension liability	80				54
Other comprehensive income (loss)	(10,946)				511
Comprehensive income	2,964				12,590
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Net income	13,910				12,079
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on available for sale securities arising during the period	(11,026)				457
Change in minimum pension liability	80				54
Other comprehensive income (loss)	(10,946)				511
Comprehensive income	$ 2,964				$ 12,590

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TriCo Bancshares Condensed Financial Statements (Parent Only) - Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017
Operating activities:
Net income	$ 13,910	$ 2,989	$ 11,897	$ 13,589	$ 12,079
Adjustments to reconcile net income to net cash provided by operating activities:
Equity compensation vesting expense	391				381
Net cash from operating activities	23,714				19,444
Financing activities:
Repurchase of common stock					(169)
Cash dividends paid - common	(3,903)				(3,431)
Net cash used by financing activities	14,245				(2,572)
Net change in cash and cash equivalents	(22,449)				18,094
Cash and cash equivalents and beginning of year	205,428			323,706	305,612
Cash and cash equivalents at end of year	182,979	205,428			323,706
Parent [Member]
Operating activities:
Net income	13,910				12,079
Adjustments to reconcile net income to net cash provided by operating activities:
Undistributed equity in earnings of Tri Counties Bank	(10,397)				(8,474)
Equity compensation vesting expense	391				381
Stock option excess tax benefits	0				0
Net change in other assets and liabilities	(405)				(348)
Net cash from operating activities	3,499				3,638
Financing activities:
Repurchase of common stock	(4)				(169)
Cash dividends paid - common	(3,903)				(3,431)
Net cash used by financing activities	(3,907)				(3,600)
Net change in cash and cash equivalents	(408)				38
Cash and cash equivalents and beginning of year	3,924			$ 2,840	2,802
Cash and cash equivalents at end of year	$ 3,516	$ 3,924			$ 2,840

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Regulatory Matters - Additional Information (Detail)	Dec. 31, 2019	Mar. 31, 2018	Dec. 31, 2017
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Increase in risk-based capital ratios		0.625%
Basel III Phase-in Schedule [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum capital level requirements, Total capital ratio		1.875%	1.25%
Scenario, Forecast [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum capital level requirements, Total capital ratio	10.50%
Minimum capital level requirements, Tier 1 capital ratio	8.50%
Scenario, Forecast [Member] | Common Stock [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum capital level requirements, Tier 1 capital ratio	7.00%

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Regulatory Matters - Actual and Required Capital Ratios of Bank (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%	10.00%
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.50%	6.50%
Tier 1 Capital (to Average Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%	5.00%
Basel III Phase-in Schedule [Member]
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	1.875%	1.25%
Parent [Member]
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Actual, Amount	$ 539,966	$ 528,805
Tier 1 Capital (to Risk Weighted Assets), Actual, Amount	506,129	495,318
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual, Amount	450,933	440,643
Tier 1 Capital (to Average Assets), Actual, Amount	$ 506,129	$ 495,318
Total Capital (to Risk Weighted Assets), Actual, Ratio	13.91%	14.07%
Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio	13.03%	13.18%
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio	11.61%	11.72%
Tier 1 Capital (to Average Assets), Actual, Ratio	10.84%	10.80%
Parent [Member] | Basel III Phase-in Schedule [Member]
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	$ 383,434	$ 347,694
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	305,777	272,517
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	247,534	216,134
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Amount	$ 186,720	$ 183,400
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	9.875%	9.25%
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	7.875%	7.25%
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	6.375%	5.75%
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Ratio	4.00%	4.00%
Parent [Member] | Basel III Fully Phased In [Member]
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	$ 407,702	$ 394,679
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	330,045	319,502
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	271,802	263,120
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Amount	$ 186,720	$ 183,400
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	10.50%	10.50%
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	8.50%	8.50%
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	7.00%	7.00%
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Ratio	4.00%	4.00%
Tri Countries Bank [Member]
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Actual, Amount	$ 536,894	$ 525,384
Tier 1 Capital (to Risk Weighted Assets), Actual, Amount	503,057	491,897
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual, Amount	503,057	491,897
Tier 1 Capital (to Average Assets), Actual, Amount	$ 503,057	$ 491,897
Total Capital (to Risk Weighted Assets), Actual, Ratio	13.83%	13.98%
Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio	12.96%	13.09%
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio	12.96%	13.09%
Tier 1 Capital (to Average Assets), Actual, Ratio	10.78%	10.73%
Total Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 388,112	$ 375,713
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	310,490	300,570
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	252,273	244,214
Tier 1 Capital (to Average Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	233,395	229,243
Tri Countries Bank [Member] | Basel III Phase-in Schedule [Member]
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	383,261	347,535
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	305,638	272,392
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	247,421	216,035
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Amount	$ 186,716	$ 183,394
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	9.875%	9.25%
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	7.875%	7.25%
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	6.375%	5.75%
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Ratio	4.00%	4.00%
Tri Countries Bank [Member] | Basel III Fully Phased In [Member]
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	$ 407,518	$ 394,499
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	329,895	319,356
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Amount	271,678	262,999
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Amount	$ 186,716	$ 183,394
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	10.50%	10.50%
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	8.50%	8.50%
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement, Ratio	7.00%	7.00%
Tier 1 Capital (to Average Assets), Minimum Capital Requirement, Ratio	4.00%	4.00%

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Summary of Quarterly Results of Operations (Unaudited) - Results of Operations (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017
Loans:
Discount accretion PCI - cash basis	$ 246	$ 516	$ 398	$ 386	$ 112
Discount accretion PCI - other	60	445	407	797	631
Discount accretion PNCI	326	528	559	987	798
All other loan interest income	37,417	36,705	35,904	34,248	33,373
Total loan interest income	38,049	38,194	37,268	36,418	34,914
Debt securities, dividends and interest bearing cash at banks (not FTE)	9,072	8,767	8,645	8,626	8,570
Total interest and dividend income	47,121	46,961	45,913	45,044	43,484
Interest expense	2,135	1,868	1,829	1,610	1,491
Net interest income	44,986	45,093	44,084	43,434	41,993
Provision for (benefit from reversal of provision for) loan losses	(236)	1,677	765	(796)	(1,557)
Net interest income after provision for loan losses	45,222	43,416	43,319	44,230	43,550
Noninterest income	12,290	12,478	12,930	12,910	11,703
Noninterest expense	38,162	38,076	37,222	35,904	35,822
Income before income taxes	19,350	17,818	19,027	21,236	19,431
Income tax expense	5,440	14,829	7,130	7,647	7,352
Net income	$ 13,910	$ 2,989	$ 11,897	$ 13,589	$ 12,079
Per common share:
Net income (diluted)	$ 0.60	$ 0.13	$ 0.51	$ 0.58	$ 0.52
Dividends	$ 0.17	$ 0.17	$ 0.17	$ 0.17	$ 0.15