10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

FORM 10-Q

(Mark One)

x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2017

OR

o 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  001-33572

Bank of Marin Bancorp

(Exact name of Registrant as specified in its charter)

California	20-8859754
(State or other jurisdiction of incorporation)	(IRS Employer Identification No.)
504 Redwood Blvd., Suite 100, Novato, CA	94947
(Address of principal executive office)	(Zip Code)

Registrant’s telephone number, including area code:  (415) 763-4520

Indicate by check mark whether the registrant (1) has filed all reports 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 x                    No  o

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 x                   No o

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

Large accelerated filer o		Accelerated filer x
Non-accelerated filer o	(Do not check if a smaller reporting company)	Smaller reporting company o
Emerging growth company o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

o

Indicate by check mark if the registrant is a shell company, as defined in Rule 12b-2 of the Exchange Act.

Yes   o     No  x

As of April 30, 2017, there were 6,149,006 shares of common stock outstanding.

TABLE OF CONTENTS

PART I	FINANCIAL INFORMATION	Page-3
ITEM 1.	Financial Statements	Page-3
	Consolidated Statements of Condition	Page-3
	Consolidated Statements of Comprehensive Income	Page-4
	Consolidated Statements of Changes in Stockholders' Equity	Page-5
	Consolidated Statements of Cash Flows	Page-6
	Notes to Consolidated Financial Statements	Page-7
ITEM 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	Page-29
ITEM 3.	Quantitative and Qualitative Disclosure about Market Risk	Page-40
ITEM 4.	Controls and Procedures	Page-40
PART II	OTHER INFORMATION	Page-41
ITEM 1.	Legal Proceedings	Page-41
ITEM 1A.	Risk Factors	Page-41
ITEM 2.	Unregistered Sales of Equity Securities and Use of Proceeds	Page-41
ITEM 3.	Defaults Upon Senior Securities	Page-41
ITEM 4.	Mine Safety Disclosures	Page-41
ITEM 5.	Other Information	Page-41
ITEM 6.	Exhibits	Page-42
SIGNATURES		Page-43

Page-2

PART I       FINANCIAL INFORMATION

ITEM 1.  Financial Statements

BANK OF MARIN BANCORP

CONSOLIDATEDSTATEMENTS OFCONDITION

at March 31, 2017 and December 31, 2016

(in thousands, except share data; unaudited)	March 31, 2017			December 31, 2016
Assets
Cash and due from banks	$	73,162		$	48,804
Investment securities
Held-to-maturity, at amortized cost	172,272			44,438
Available-for-sale, at fair value	241,684			372,580
Total investment securities	413,956			417,018
Loans, net of allowance for loan losses of $15,219 and $15,442 at March 31, 2017 and December 31, 2016, respectively	1,462,351			1,471,174
Bank premises and equipment, net	8,336			8,520
Goodwill	6,436			6,436
Core deposit intangible	2,462			2,580
Interest receivable and other assets	67,005			68,961
Total assets	$	2,033,708		$	2,023,493
Liabilities and Stockholders' Equity
Liabilities
Deposits
Non-interest bearing	$	878,416		$	817,031
Interest bearing
Transaction accounts	100,628			100,723
Savings accounts	159,889			163,516
Money market accounts	494,324			539,967
Time accounts	146,012			151,463
Total deposits	1,779,269			1,772,700
Subordinated debentures	5,628			5,586
Interest payable and other liabilities	13,825			14,644
Total liabilities	1,798,722			1,792,930
Stockholders' Equity
Preferred stock, no par value, Authorized - 5,000,000 shares, none issued	—			—
Common stock, no par value, Authorized - 15,000,000 shares;     Issued and outstanding - 6,148,486 and 6,127,314 at     March 31, 2017 and December 31, 2016, respectively	87,911			87,392
Retained earnings	149,357			146,464
Accumulated other comprehensive loss, net	(2,282		)	(3,293		)
Total stockholders' equity	234,986			230,563
Total liabilities and stockholders' equity	$	2,033,708		$	2,023,493

The accompanying notes are an integral part of these consolidated financial statements (unaudited).

Page-3

BANK OF MARIN BANCORP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

	Three months ended
(in thousands, except per share amounts; unaudited)	March 31, 2017		March 31, 2016
Interest income
Interest and fees on loans	$	15,849	$	17,141
Interest on investment securities
Securities of U.S. government agencies	1,518		1,352
Obligations of state and political subdivisions	568		586
Corporate debt securities and other	37		105
Interest on Federal funds sold and short-term investments	60		11
Total interest income	18,032		19,195
Interest expense
Interest on interest-bearing transaction accounts	29		27
Interest on savings accounts	15		14
Interest on money market accounts	113		111
Interest on time accounts	146		196
Interest on Federal Home Loan Bank ("FHLB") and other borrowings	—		100
Interest on subordinated debentures	108		109
Total interest expense	411		557
Net interest income	17,621		18,638
Provision for loan losses	—		—
Net interest income after provision for loan losses	17,621		18,638
Non-interest income
Service charges on deposit accounts	452		456
Wealth Management and Trust Services	503		566
Debit card interchange fees	372		338
Merchant interchange fees	96		113
Earnings on bank-owned life insurance	209		201
Dividends on FHLB stock	232		169
Gains on investment securities, net	—		110
Other income	251		210
Total non-interest income	2,115		2,163
Non-interest expense
Salaries and related benefits	7,475		6,748
Occupancy and equipment	1,319		1,281
Depreciation and amortization	481		453
Federal Deposit Insurance Corporation insurance	161		261
Data processing	939		856
Professional services	522		498
Directors' expense	158		189
Information technology	198		193
Provision for losses on off-balance sheet commitments	165		—
Other expense	1,593		1,531
Total non-interest expense	13,011		12,010
Income before provision for income taxes	6,725		8,791
Provision for income taxes	2,177		3,145
Net income	$	4,548	$	5,646
Net income per common share:
Basic	$	0.75	$	0.93
Diluted	$	0.74	$	0.93
Weighted average shares:
Basic	6,092		6,048
Diluted	6,172		6,090
Dividends declared per common share	$	0.27	$	0.25
Comprehensive income:
Net income	$	4,548	$	5,646
Other comprehensive income
Change in net unrealized gain or loss on available-for-sale securities	1,674		2,923
Amortization of net unrealized loss on available for sale securities transferred to held-to-maturity securities	41		—
Reclassification adjustment for gains on available-for-sale securities included in net income	—		(110		)
Net change in unrealized loss on available-for-sale securities, before tax	1,715		2,813
Tax effect	704		1,174
Other comprehensive income, net of tax	1,011		1,639
Comprehensive income	$	5,559	$	7,285

The accompanying notes are an integral part of these consolidated financial statements (unaudited).

Page-4

BANK OF MARIN BANCORP

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY

for the year ended December 31, 2016 and the three months ended March 31, 2017

(in thousands, except share data; unaudited)	Common Stock			Retained Earnings			Accumulated Other Comprehensive Income (Loss), Net of Taxes			Total
	Shares	Amount
Balance at December 31, 2015	6,068,543	$	84,727	$	129,553		$	193		$	214,473
Net income	—	—		23,134			—			23,134
Other comprehensive loss	—	—		—			(3,486		)	(3,486		)
Stock options exercised	36,117	1,227		—			—			1,227
Excess tax benefit - stock-based compensation	—	161		—			—			161
Stock issued under employee stock purchase plan	621	32		—			—			32
Restricted stock granted	16,910	—		—			—			—
Stock-based compensation - stock options	—	347		—			—			347
Stock-based compensation - restricted stock	—	638		—			—			638
Cash dividends paid on common stock	—	—		(6,223		)	—			(6,223		)
Stock purchased by directors under director stock plan	516	26		—			—			26
Stock issued in payment of director fees	4,607	234		—			—			234
Balance at December 31, 2016	6,127,314	$	87,392	$	146,464		$	(3,293	)	$	230,563
Net income	—	—		4,548			—			4,548
Other comprehensive income	—	—		—			1,011			1,011
Stock options exercised, net of shares surrendered for cashless exercises and tax withholdings	5,285	28		—			—			28
Stock issued under employee stock purchase plan	154	9		—			—			9
Restricted stock granted	14,230	—		—			—			—
Stock-based compensation - stock options	—	174		—			—			174
Stock-based compensation - restricted stock	—	204		—			—			204
Cash dividends paid on common stock	—	—		(1,655		)	—			(1,655		)
Stock purchased by directors under director stock plan	315	22		—			—			22
Stock issued in payment of director fees	1,188	82		—			—			82
Balance at March 31, 2017	6,148,486	$	87,911	$	149,357		$	(2,282	)	$	234,986

The accompanying notes are an integral part of these consolidated financial statements (unaudited).

Page-5

BANK OF MARIN BANCORP

CONSOLIDATED STATEMENTS OF CASH FLOWS

for the three months ended March 31, 2017 and 2016

(in thousands; unaudited)	March 31, 2017			March 31, 2016
Cash Flows from Operating Activities:
Net income	$	4,548		$	5,646
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for losses on off-balance sheet commitments	165			—
Compensation expense via common stock for director fees	73			71
Stock-based compensation expense	378			214
Amortization of core deposit intangible	118			133
Amortization of investment security premiums, net of accretion of discounts	762			742
Accretion of discount on acquired loans	(240		)	(428		)
Accretion of discount on subordinated debentures	42			50
Net amortization of deferred loan origination costs/fees	75			75
Gain on sale of investment securities	—			(110		)
Depreciation and amortization	481			453
Gain on sale of repossessed assets	(1		)	—
Earnings on bank-owned life insurance policies	(209		)	(201		)
Net change in operating assets and liabilities:
Deferred rent and other rent-related expenses	145			(51		)
Interest receivable and other assets	1,305			2,072
Interest payable and other liabilities	(674		)	(1,068		)
Total adjustments	2,420			1,952
Net cash provided by operating activities	6,968			7,598
Cash Flows from Investing Activities:
Purchase of held-to-maturity securities	(2,991		)	—
Purchase of available-for-sale securities	(5,590		)	(3,636		)
Proceeds from sale of available-for-sale securities	—			54,985
Proceeds from paydowns/maturity of held-to-maturity securities	4,001			6,237
Proceeds from paydowns/maturity of available-for-sale securities	8,594			32,548
Loans originated and principal collected, net	8,875			10,821
Purchase of premises and equipment	(297		)	(57		)
Proceeds from sale of repossessed assets	170			—
Cash paid for low income housing tax credit investment	(345		)	(76		)
Net cash provided by investing activities	12,417			100,822
Cash Flows from Financing Activities:
Net increase (decrease) in deposits	6,569			(46,880		)
Proceeds from stock options exercised	88			1,035
Payment of tax withholdings for stock options exercised	(60		)	—
Proceeds from stock issued under employee and director stock purchase plans	31			20
Repayment of borrowings	—			(47,650		)
Cash dividends paid on common stock	(1,655		)	(1,518		)
Net cash provided by (used in) financing activities	4,973			(94,993		)
Net increase in cash and cash equivalents	24,358			13,427
Cash and cash equivalents at beginning of period	48,804			26,343
Cash and cash equivalents at end of period	$	73,162		$	39,770
Supplemental disclosure of cash flow information:
Cash paid for interest	$	373		$	498
Cash paid for income taxes	$	—		$	505
Supplemental disclosure of non-cash investing and financing activities:
Change in net unrealized gain or loss on available-for-sale securities	$	1,674		$	2,813
Securities transferred from available-for-sale to held-to-maturity	$	128,965		$	—
Amortization of net unrealized loss on available-for sale securities transferred to held-to-maturity	$	41		$	—
Stock issued in payment of director fees	$	82		$	137

The accompanying notes are an integral part of these consolidated financial statements (unaudited).

Page-6

NOTES TO CONSOLIDATEDFINANCIAL STATEMENTS (Unaudited)

Note 1:  Basis of Presentation

The consolidated financial statements include the accounts of Bank of Marin Bancorp (“Bancorp”), a bank holding company, and its wholly-owned bank subsidiary, Bank of Marin (the “Bank”), a California state-chartered commercial bank. References to “we,” “our,” “us” mean the holding company and the Bank that are consolidated for financial reporting purposes. The accompanying unaudited consolidated interim financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC"). Certain information and note disclosures normally included in annual financial statements prepared in accordance with generally accepted accounting principles ("GAAP") have been condensed or omitted pursuant to those rules and regulations. Although we believe that the disclosures are adequate and the information presented is not misleading, we suggest that these interim financial statements be read in conjunction with the annual financial statements and the notes thereto included in our 2016 Annual Report on Form 10-K.  In the opinion of Management, the unaudited consolidated financial statements reflect all adjustments which are necessary for a fair presentation of the consolidated financial position, the results of operations, changes in comprehensive income, changes in stockholders’ equity, and cash flows for the periods presented. All material intercompany transactions have been eliminated. The results of these interim periods may not be indicative of the results for the full year or for any other period. We have evaluated subsequent events through the date of filing with the SEC and have determined that there are no subsequent events that require additional recognition or disclosure.

The NorCal Community Bancorp Trusts I and II, respectively (the "Trusts") were formed for the sole purpose of issuing trust preferred securities. Bancorp is not considered the primary beneficiary of the Trusts (variable interest entities), therefore the Trusts are not consolidated in our consolidated financial statements, but rather the subordinated debentures are shown as a liability on our consolidated statements of condition (See Note 6, Borrowings). Bancorp's investment in the securities of the Trusts is accounted for under the equity method and is included in interest receivable and other assets on the consolidated statements of condition.

The following table shows: 1) weighted average basic shares, 2) potentially dilutive weighted average common shares related to stock options and unvested restricted stock awards, and 3) weighted average diluted shares. Basic earnings per share (“EPS”) are calculated by dividing net income by the weighted average number of common shares outstanding during each period, excluding unvested restricted stock awards. Diluted EPS are calculated using the weighted average number of potentially dilutive common shares. The number of potentially dilutive common shares included in the quarterly diluted EPS is computed using the average market prices during the three months included in the reporting period under the treasury stock method. The number of potentially dilutive common shares included in year-to-date diluted EPS is a year-to-date weighted average of potentially dilutive common shares included in each quarterly diluted EPS computation. We have two forms of outstanding common stock: common stock and unvested restricted stock awards. Holders of unvested restricted stock awards receive non-forfeitable dividends at the same rate as common shareholders and they both share equally in undistributed earnings. Under the two-class method, the difference in EPS is not significant for these participating securities.

	Three months ended
(in thousands, except per share data)	March 31, 2017		March 31, 2016
Weighted average basic shares outstanding	6,092		6,048
Potentially dilutive common shares related to:
Stock options	62		35
Unvested restricted stock awards	18		7
Weighted average diluted shares outstanding	6,172		6,090
Net income	$	4,548	$	5,646
Basic EPS	$	0.75	$	0.93
Diluted EPS	$	0.74	$	0.93
Weighted average anti-dilutive shares not included in the calculation of diluted EPS	13		48

Page-7

Note 2: Recently Adopted and Issued Accounting Standards

In March 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2016-05, Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships. A contract novation refers to replacing one of the parties to a derivative instrument with a new party. This ASU clarifies that a change in counterparty in a derivative instrument does not, in and of itself, require dedesignation of that hedging relationship and therefore discontinue the application of hedge accounting. We adopted the amendments prospectively effective January 1, 2017, which did not have a material impact on our financial condition or results of operations as there were no changes in counterparties.

In March 2016, the FASB issued ASU No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting ("ASU 2016-09"). This ASU identifies areas for simplification involving several aspects of accounting for share-based payment transactions, including the income tax consequences, classification of awards as equity or liabilities, forfeiture accounting, and classifications on the statement of cash flows. We adopted the requirements of this ASU effective January 1, 2017, which impacted the following areas:

Forfeiture rates: We have elected to account for forfeitures as they occur. Previously, we accounted for forfeitures based on an estimate of the number of awards expected to vest. The policy change was applied using a modified retrospective approach and did not have a material effect on our financial condition or results of operations.

Income taxes: We have recorded excess tax benefits (deficiencies) resulting from the exercise of non-qualified stock options, the disqualifying disposition of incentive stock options and vesting of restricted stock awards as tax benefits (expense) in the consolidated statements of comprehensive income with a corresponding decrease (increase) to current taxes payable. Previous to the adoption of this ASU, excess tax benefits (deficiencies) were recognized as an increase to common stock in the consolidated statements of changes in stockholders' equity. In addition, we have reflected excess tax benefits as an operating activity in the consolidated statements of cash flows. Previous to the adoption of this ASU, excess tax benefits were shown as a financing activity. We applied the amendment prospectively and prior period financial statements have not been restated. For the three months ended March 31, 2017, we recognized $133 thousand in excess tax benefits recorded as a reduction to income tax expense.

Statutory tax withholding: Cash paid for tax withholdings when shares are surrendered in a cashless stock option exchange has been classified as a financing activity in the consolidated statements of cash flows. There were no shares surrendered for tax withholdings prior to the adoption of ASU 2016-09.

In March 2017, the FASB issued ASU No. 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities. The amendments in this ASU shorten the amortization period for certain callable debt securities purchased at a premium and requires the premium to be amortized to the earliest call date. The ASU is effective for annual periods beginning after December 15, 2018, including interim periods within those periods. We early adopted this ASU effective January 1, 2017, which did not have a material impact on our financial condition and results of operations.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). This ASU is a converged standard involving FASB and International Financial Reporting Standards that provides a single comprehensive revenue recognition model for all contracts with customers across transactions and industries. The core principal of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount and at a time that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Subsequent updates related to Revenue from Contracts with Customers (Topic 606) are as follows:

• August 2015 ASU No. 2015-14 - Deferral of the Effective Date, institutes a one-year deferral of the effective date of this amendment to annual reporting periods beginning after December 15, 2017. Early application is permitted only as of annual periods beginning after December 15, 2016, including interim reporting periods within that reporting period.

• March 2016 ASU No. 2016-08 - Principal versus Agent Considerations (Reporting Revenue Gross versus Net), clarifies the implementation guidance on principal versus agent considerations and on the use of indicators that assist an entity in determining whether it controls a specified good or service before it is transferred to the customer.

Page-8

• April 2016 ASU No. 2016-10 - Identifying Performance Obligations and Licensing, provides guidance in determining performance obligations in a contract with a customer and clarifies whether a promise to grant a license provides a right to access or the right to use intellectual property.

• May 2016 ASU No. 2016-12 - Narrow Scope Improvements and Practical Expedients, gives further guidance on assessing collectability, presentation of sales taxes, noncash consideration, and completed contracts and contract modifications at transition.

• December 2016 ASU No. 2016-20 - Technical Corrections and Improvements to Topic 606, further clarifies specific aspects of previously issued guidance or corrects unintended application of the guidance.

Our revenue is mainly comprised of interest income on financial instruments, which is explicitly excluded from the scope of ASU 2014-09. While the recognition of certain revenue arrangements of components of our non-interest income may be affected by the ASU, we do not expect it to have a material impact on our financial condition and results of operations.

In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in this ASU make improvements to accounting standards related to financial instruments, including the following:

• Requires equity investments, except for 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.

• Simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. When impairment exists, an entity is required to measure the investment at fair value.

• Eliminates the requirement to disclose the method(s) and significant assumptions used to estimate the fair value that is currently required to be disclosed for financial instruments measured at amortized cost on the balance sheet.

• Requires public companies to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes.

• Requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (i.e., securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements.

• Clarifies 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.

ASU 2016-01 is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. This ASU may affect our financial statement presentation and related footnotes, but we do not expect it to have a material impact on our financial condition or results of operations.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). The amendments in this ASU intend to increase transparency and comparability among organizations by recognizing an asset, which represents the right to use the asset for the lease term, and a lease liability, which is a lessee's obligation to make lease payments measured on a discounted basis. This ASU generally applies to leasing arrangements exceeding a twelve month term. ASU 2016-02 is effective for annual periods, including interim periods within those annual periods beginning after December 15, 2018 and requires a modified retrospective method of adoption. Early application of the amendments is permitted. We intend to adopt this ASU during the first quarter of 2019, as required, and are currently evaluating accounting solutions. As of March 31, 2017, our undiscounted operating lease obligations that were off-balance sheet totaled $20.4 million (See Note 8, Commitments and Contingencies). Upon adoption of this ASU, the present values of leases currently classified as operating leases will be recognized as lease assets and liabilities on our balance sheet. Additional disclosures of key information about our leasing arrangements will also be required. We do not expect the ASU will have a material impact on our capital ratios or return on average assets when adopted and we are currently evaluating the effect the ASU will have on other components of our financial condition and results of operations.

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In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. Under the new guidance, entities will be required to measure expected credit losses by utilizing forward-looking information to assess an entity's allowance for credit losses. The measurement of expected credit losses will be based on historical experience, current conditions and reasonable and supportable forecasts that affect the collectability of a credit over its remaining life. In addition, the ASU amends the accounting for potential credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Management refined our allowance for loan loss model in 2016 and enhanced our loan-level data collection and methodology for analyzing credit losses in preparation for the new accounting standards. We will continue our evaluation of the provisions of this ASU and will be monitoring developments, additional guidance and the potential outcome the amendments will have on our financial condition and results of operations upon adoption in the first quarter of 2020.

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU provides guidance on how to present and classify eight specific cash flow topics in the statement of cash flows. The ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The amendments should be applied using a retrospective transition method to each period presented, if practical. This ASU may affect our financial statement presentation, but we do not expect it to have a material impact on our financial condition or results of operations.

In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business. The amendments are intended to help companies evaluate whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses and provide a more robust framework to use in determining when a set of assets and activities is a business. The amendments are effective for annual periods after December 31, 2017, including interim periods within those periods. The amendments will be adopted prospectively. We will consider these amendments in our evaluation of the accounting for any future business acquisitions or asset disposals.

In January 2017, the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. This amendment simplifies how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test, which would measure a goodwill impairment loss by comparing the implied fair value of goodwill with the carrying amount of that goodwill. Instead, an entity will perform only Step 1 of its quantitative goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount, and then recognizing an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value. The loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The new guidance does not amend the optional qualitative assessment of goodwill impairment, which Bancorp currently uses. The ASU is effective for fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. We anticipate that this ASU will simplify our evaluation of the impairment of goodwill and do not expect it to have a material impact on our financial condition and results of operations.

Note 3:  Fair Value of Assets and Liabilities

Fair Value Hierarchy and Fair Value Measurement

We group our assets and liabilities that are measured at fair value in three levels within the fair value hierarchy, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are:

Level 1: Valuations are based on unadjusted quoted prices in active markets for identical assets or liabilities.

Level 2: Valuations are based on quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-based valuations for which all significant assumptions are observable or can be corroborated by observable market data.

Level 3: Valuations are based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Values are determined using pricing models and discounted cash flow models and may include significant Management judgment and estimation.

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Transfers between levels of the fair value hierarchy are recognized through our monthly and/or quarterly valuation process in the reporting period during which the event or circumstances that caused the transfer occurred.

The following table summarizes our assets and liabilities that were required to be recorded at fair value on a recurring basis.

(in thousands)   Description of Financial Instruments	Carrying Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
March 31, 2017
Securities available-for-sale:
Mortgage-backed securities and collateralized mortgage obligations issued by U.S. government agencies	$	123,121	$	—	$	122,531	$	590
Debentures of government sponsored agencies	35,386		—		35,386		—
Privately-issued collateralized mortgage obligations	305		—		305		—
Obligations of state and political subdivisions	77,843		—		77,843		—
Corporate bonds	5,029		—		5,029		—
Derivative financial assets (interest rate contracts)	70		—		70		—
Derivative financial liabilities (interest rate contracts)	837		—		837		—
December 31, 2016
Securities available-for-sale:
Mortgage-backed securities and collateralized mortgage obligations issued by U.S. government agencies	$	254,041	$	—	$	253,434	$	607
Debentures of government sponsored agencies	35,403		—		35,403		—
Privately-issued collateralized mortgage obligations	419		—		419		—
Obligations of state and political subdivisions	77,701		—		77,701		—
Corporate bonds	5,016		—		5,016		—
Derivative financial assets (interest rate contracts)	55		—		55		—
Derivative financial liabilities (interest rate contracts)	933		—		933		—

Securities available-for-sale are recorded at fair value on a recurring basis. When available, quoted market prices (Level 1) are used to determine the fair value of securities available-for-sale. If quoted market prices are not available, we obtain pricing information from a reputable third-party service provider, who may utilize valuation techniques that use current market-based or independently sourced parameters, such as bid/ask prices, dealer-quoted prices, interest rates, benchmark yield curves, prepayment speeds, probability of default, loss severity and credit spreads (Level 2).   Level 2 securities include obligations of state and political subdivisions, U.S. agencies or government-sponsored agencies' debt securities, mortgage-backed securities, government agency-issued, privately-issued collateralized mortgage obligations, and corporate bonds. As of March 31, 2017 and December 31, 2016, there were no securities that were considered Level 1 securities. As of March 31, 2017, we had one available-for-sale security that was considered a Level 3 security. The security is a U.S. government agency obligation collateralized by a small number of business equipment loans guaranteed by the Small Business Administration ("SBA") program. The security is not actively traded and is owned only by a few investors. The significant unobservable data that is reflected in the fair value measurement include dealer quotes, projected prepayment speeds/average life and credit information, among other things. The unrealized gain or loss on this SBA-guaranteed security increased by $2 thousand in the same period recorded as part of other comprehensive income.

Securities held-to-maturity may be written down to fair value (determined using the same techniques discussed above for securities available-for-sale) as a result of other-than-temporary impairment, and we did not record any write-downs during 2017 or 2016.

On a recurring basis, derivative financial instruments are recorded at fair value, which is based on the income approach using observable Level 2 market inputs, reflecting market expectations of future interest rates as of the measurement date.  Standard valuation techniques are used to calculate the present value of the future expected cash flows assuming

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an orderly transaction.  Valuation adjustments may be made to reflect both our own credit risk and the counterparties’ credit risk in determining the fair value of the derivatives. Level 2 inputs for the valuations are limited to observable market prices for London Interbank Offered Rate ("LIBOR") and Overnight Index Swap ("OIS") rates (for the very short term), quoted prices for LIBOR futures contracts, observable market prices for LIBOR and OIS swap rates, and one-month and three-month LIBOR basis spreads at commonly quoted intervals.  Mid-market pricing of the inputs is used as a practical expedient in the fair value measurements.  We project spot rates at reset days specified by each swap contract to determine future cash flows, then discount to present value using either LIBOR or OIS curves depending on whether the swap positions are fully collateralized as of the measurement date.  When the value of any collateral placed with counterparties is less than the interest rate derivative liability, a credit valuation adjustment ("CVA") is applied to reflect the credit risk we pose to counterparties.  We have used the spread between the Standard & Poor's BBB rated U.S. Bank Composite rate and LIBOR for the closest maturity term corresponding to the duration of the swaps to derive the CVA. A similar credit risk adjustment, correlated to the credit standing of the counterparty, is made when collateral posted by the counterparty does not fully cover their liability to the Bank. For further discussion on our methodology in valuing our derivative financial instruments, refer to Note 9, Derivative Financial Instruments and Hedging Activities.

Certain financial assets may be measured at fair value on a non-recurring basis. These assets are subject to fair value adjustments that result from the application of the lower of cost or fair value accounting or write-downs of individual assets, such as impaired loans and other real estate owned ("OREO").

The following table presents the carrying value of assets measured at fair value on a non-recurring basis and that were held in the consolidated statements of condition at each respective period end, by level within the fair value hierarchy as of March 31, 2017 and December 31, 2016.

(in thousands)	Carrying Value	Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)	Significant Unobservable Inputs  (Level 3)
March 31, 2017
Other real estate owned	238	—	—	238
December 31, 2016
Other real estate owned	408	—	—	408

When a loan is identified as impaired, it is reported at the lower of cost or fair value, measured based on the loan's observable market price (Level 1) or the current net realizable value of the underlying collateral securing the loan, if the loan is collateral dependent (Level 3).  Net realizable value of the underlying collateral is the fair value of the collateral less estimated selling costs and any prior liens. Appraisals, recent comparable sales, offers and listing prices are factored in when valuing the collateral. We review and verify the qualifications and licenses of the certified general appraisers used for appraising commercial properties or certified residential appraisers for residential properties. Real estate appraisals may utilize a combination of approaches including replacement cost, sales comparison and the income approach. Comparable sales and income data are analyzed by the appraisers and adjusted to reflect differences between them and the subject property such as property characteristics, leasing status and physical condition. When appraisals are received, Management reviews the underlying assumptions and methodology utilized, as well as the overall resulting value in conjunction with independent data sources such as recent market data and industry-wide statistics. We generally use a 6% discount for selling costs which is applied to all properties, regardless of size. Appraised values may be adjusted to reflect changes in market conditions that have occurred subsequent to the appraisal date, or for revised estimates regarding the timing or cost of the property sale. These adjustments are based on qualitative judgments made by Management on a case-by-case basis and are generally unobservable valuation inputs as they are specific to the underlying collateral. There have been no significant changes in the valuation techniques during 2017. As of March 31, 2017 and December 31, 2016, there were no collateral-dependent loans whose principal balances had been written down to the values of the underlying collateral.

OREO represents collateral acquired through foreclosure and is initially recorded at fair value as established by a current appraisal, adjusted for disposition costs. Subsequently, OREO is measured at lower of cost or fair value. OREO values are reviewed on an ongoing basis and any subsequent decline in fair value is recorded as a foreclosed asset expense in the current period. The value of OREO is determined based on independent appraisals, similar to the process used for impaired loans, discussed above, and is classified as Level 3. All OREO resulted from an acquisition. There were no changes in the estimated fair values of OREO during the first three months of 2017 or 2016.

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Disclosures about Fair Value of Financial Instruments

The table below is a summary of fair value estimates for financial instruments as of March 31, 2017 and December 31, 2016, excluding financial instruments recorded at fair value on a recurring basis (summarized in the first table in this note). The carrying amounts in the following table are recorded in the consolidated statements of condition under the indicated captions. Further, we have not disclosed the fair value of financial instruments specifically excluded from disclosure requirements such as bank-owned life insurance policies ("BOLI"). Additionally, we hold shares of FHLB stock and Visa Inc. Class B common stock at cost. These shares are restricted from resale and their values are discussed in Note 4, Investment Securities.

	March 31, 2017					December 31, 2016
(in thousands)	Carrying Amounts		Fair Value		Fair Value Hierarchy	Carrying Amounts		Fair Value		Fair Value Hierarchy
Financial assets
Cash and cash equivalents	$	73,162	$	73,162	Level 1	$	48,804	$	48,804	Level 1
Investment securities held-to-maturity	172,272		172,421		Level 2	44,438		45,097		Level 2
Loans, net	1,462,351		1,444,456		Level 3	1,471,174		1,473,360		Level 3
Interest receivable	5,721		5,721		Level 2	6,319		6,319		Level 2
Financial liabilities
Deposits	1,779,269		1,779,533		Level 2	1,772,700		1,773,102		Level 2
Subordinated debentures	5,628		5,162		Level 3	5,586		5,083		Level 3
Interest payable	131		131		Level 2	134		134		Level 2

Following is a description of methods and assumptions used to estimate the fair value of each class of financial instrument not recorded at fair value but required for disclosure purposes:

Cash and Cash Equivalents - The carrying amounts of cash and cash equivalents approximate their fair value because of the short-term nature of these instruments.

Held-to-maturity Securities - Held-to-maturity securities, which generally consist of obligations of state and political subdivisions and corporate bonds, are recorded at their amortized cost. Their fair value for disclosure purposes is determined using methodologies similar to those described above for available-for-sale securities using Level 2 inputs. If Level 2 inputs are not available, we may utilize pricing models that incorporate unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities (Level 3).  As of March 31, 2017 and December 31, 2016, we did not hold any held-to-maturity securities whose fair value was measured using significant unobservable inputs.

Loans - The fair value of loans with variable interest rates approximates their current carrying value, because their rates are regularly adjusted to current market rates. The fair value of fixed rate loans or variable loans at negotiated interest rate floors or ceilings with remaining maturities in excess of one year is estimated by discounting the future cash flows using current market rates at which similar loans would be made to borrowers with similar creditworthiness and similar remaining maturities. The allowance for loan losses (“ALLL”) is considered to be a reasonable estimate of the portion of loan discount attributable to credit risks.

Interest Receivable and Payable - The interest receivable and payable balances approximate their fair value due to the short-term nature of their settlement dates.

Deposits - The fair value of deposits without stated maturity, such as transaction accounts, savings accounts and money market accounts, is the amount payable on demand at the reporting date. The fair value of time deposits is estimated by discounting the future cash flows using current rates offered for deposits of similar remaining maturities.

Federal Home Loan Bank Borrowing - The fair value is estimated by discounting the future cash flows using current rates offered by the FHLB for similar credit advances corresponding to the remaining term of our fixed-rate credit advances.

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Subordinated Debentures - The fair values of the subordinated debentures are estimated by discounting the future cash flows (interest payment at a rate of three-month LIBOR plus 3.05% and 1.40%) to their present values using current market rates at which similar bonds would be issued with similar credit ratings as ours and similar remaining maturities. Each interest payment is discounted at the spot rate of the corresponding term, determined based on the yields and terms of comparable trust preferred securities, plus a liquidity premium. In July 2010, the Dodd-Frank Act was signed into law and limits the ability of certain bank holding companies to treat trust preferred security debt issuances as Tier 1 capital. This law effectively closed the trust-preferred securities markets for new issuances and led to the absence of observable or comparable transactions in the market place. Due to the use of unobservable inputs of trust preferred securities, we consider the fair value to be a Level 3 measurement. See Note 6, Borrowings, for further information.

Commitments - The value of unrecognized financial instruments is estimated based on the fee income associated with the commitments which, in the absence of credit exposure, is considered to approximate their settlement value. The fair value of commitment fees was not material at March 31, 2017 and December 31, 2016, respectively.

Note 4:  Investment Securities

Our investment securities portfolio consists of obligations of state and political subdivisions, corporate bonds, U.S. government agency securities, including residential and commercial mortgage-backed securities (“MBS”) and collateralized mortgage obligations (“CMOs”) issued or guaranteed by Federal National Mortgage Association ("FNMA"), Federal Home Loan Mortgage Corporation ("FHLMC"), or Government National Mortgage Association ("GNMA"), debentures issued by government-sponsored agencies such as FNMA, Federal Farm Credit Bureau, FHLB and FHLMC, as well as privately issued CMOs, as reflected in the table below:

	March 31, 2017									December 31, 2016
	Amortized		Fair		Gross Unrealized					Amortized		Fair		Gross Unrealized
(in thousands)	Cost		Value		Gains		(Losses)			Cost		Value		Gains		(Losses)
Held-to-maturity:
Obligations of state and   political subdivisions	$	27,741	$	28,407	$	669	$	(3	)	$	30,856	$	31,544	$	694	$	(6	)
Corporate bonds	3,514		3,511		—		(3		)	3,519		3,518		—		(1		)
MBS pass-through securities issued by FHLMC and FNMA	109,357		108,843		109		(623		)	10,063		10,035		126		(154		)
CMOs issued by FHLMC	31,660		31,660		50		(50		)	—		—		—		—
Total held-to-maturity	172,272		172,421		828		(679		)	44,438		45,097		820		(161		)
Available-for-sale:
Securities of U.S. government agencies:
MBS pass-through securities issued by FHLMC and FNMA	93,676		93,719		328		(285		)	193,998		190,566		145		(3,577		)
CMOs issued by FNMA	12,897		12,874		84		(107		)	13,790		13,772		91		(109		)
CMOs issued by FHLMC	10,237		10,260		25		(2		)	43,452		42,758		37		(731		)
CMOs issued by GNMA	6,181		6,268		87		—			6,844		6,945		102		(1		)
Debentures of government- sponsored agencies	35,488		35,386		2		(104		)	35,486		35,403		7		(90		)
Privately issued CMOs	305		305		—		—			419		419		1		(1		)
Obligations of state and political subdivisions	78,905		77,843		237		(1,299		)	79,306		77,701		135		(1,740		)
Corporate bonds	4,961		5,029		68		—			4,959		5,016		57		—
Total available-for-sale	242,650		241,684		831		(1,797		)	378,254		372,580		575		(6,249		)
Total investment securities	$	414,922	$	414,105	$	1,659	$	(2,476	)	$	422,692	$	417,677	$	1,395	$	(6,410	)

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The amortized cost and fair value of investment debt securities by contractual maturity at March 31, 2017 are shown below. Expected maturities may differ from contractual maturities if the issuers of the securities have the right to call or prepay obligations with or without call or prepayment penalties.

	March 31, 2017								December 31, 2016
	Held-to-Maturity				Available-for-Sale				Held-to-Maturity				Available-for-Sale
(in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value
Within one year	$	10,401	$	10,424	$	21,417	$	21,386	$	13,473	$	13,506	$	20,136	$	20,109
After one but within five years	16,665		17,098		57,185		57,200		16,706		17,150		58,334		58,267
After five years through ten years	43,964		44,082		80,507		79,224		3,000		3,125		113,576		110,842
After ten years	101,242		100,817		83,541		83,874		11,259		11,316		186,208		183,362
Total	$	172,272	$	172,421	$	242,650	$	241,684	$	44,438	$	45,097	$	378,254	$	372,580

Sales of investment securities and gross gains and losses are shown in the following table. The sales of the held-to-maturity securities were due to evidence of significant deterioration of the issuers' creditworthiness since purchase.

	Three months ended
(in thousands)	March 31, 2017		March 31, 2016
Held-to-maturity:
Sales proceeds	$	—	$	54,985
Gross realized gains	—		110
Gross realized losses	—		—

Investment securities carried at $103.6 million and $109.1 million at March 31, 2017 and December 31, 2016, respectively, were pledged with the State of California: $102.8 million and $108.3 million to secure public deposits in compliance with the Local Agency Security Program at March 31, 2017 and December 31, 2016, respectively, and $819 thousand and $822 thousand to provide collateral for trust deposits at March 31, 2017 and December 31, 2016, respectively. In addition, investment securities carried at $2.1 million were pledged to collateralize a Wealth Management and Trust Services (“WMTS”) checking account at both March 31, 2017 and December 31, 2016.

As part of our ongoing review of our investment securities portfolio, we reassessed the classification of certain MBS pass-through and CMOs securities issued by FHLMC and FNMA. Effective February 24, 2017, we transferred $129 million of these securities, which we intend and have the ability to hold to maturity, from available-for-sale securities to held-to-maturity at fair value. The unrealized pre-tax loss of $3.0 million at the date of transfer remained in accumulated other comprehensive income and is amortized over the remaining lives of the securities.

Other-Than-Temporarily Impaired ("OTTI") Debt Securities

We have evaluated the credit of our investment securities and their issuers and/or insurers. Based on our evaluation, Management has determined that no investment security in our investment portfolio is other-than-temporarily impaired as of March 31, 2017. We do not have the intent and it is more likely than not that we will not have to sell the remaining securities temporarily impaired at March 31, 2017 before recovery of the amortized cost basis.

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There were 106 and 134investment securities in unrealized loss positions at March 31, 2017 and December 31, 2016, respectively. Those securities are summarized and classified according to the duration of the loss period in the tables below:

March 31, 2017	< 12 continuous months					≥ 12 continuous months					Total securities  in a loss position
(in thousands)	Fair value		Unrealized loss			Fair value		Unrealized loss			Fair value		Unrealized loss
Held-to-maturity:
Obligations of state and political subdivisions	$	1,493	$	(1	)	$	545	$	(2	)	$	2,038	$	(3	)
Corporate bonds	3,512		(3		)	—		—			3,512		(3		)
MBS pass-through securities issued by FHLMC and FNMA	93,021		(623		)	—		—			93,021		(623		)
CMOs issued by FHLMC	11,604		(50		)	—		—			11,604		(50		)
Total held-to-maturity	109,630		(677		)	545		(2		)	110,175		(679		)
Available-for-sale:
MBS pass-through securities issued by FHLMC and FNMA	45,048		(285		)	—		—			45,048		(285		)
CMOs issued by FNMA	8,866		(107		)	—		—			8,866		(107		)
CMOs issued by FHLMC	6,553		(2		)	—		—			6,553		(2		)
Debentures of government- sponsored agencies	19,940		(50		)	9,945		(54		)	29,885		(104		)
Obligations of state add political subdivisions	41,822		(1,299		)	—		—			41,822		(1,299		)
Corporate bonds	1,000		—			—		—			1,000		—
Total available-for-sale	123,229		(1,743		)	9,945		(54		)	133,174		(1,797		)
Total temporarily impaired securities	$	232,859	$	(2,420	)	$	10,490	$	(56	)	$	243,349	$	(2,476	)

December 31, 2016	< 12 continuous months					≥ 12 continuous months					Total securities  in a loss position
(in thousands)	Fair value		Unrealized loss			Fair value		Unrealized loss			Fair value		Unrealized loss
Held-to-maturity:
Obligations of state and political subdivisions	$	2,250	$	(154	)	$	—	$	—		$	2,250	$	(154	)
Corporate bonds	3,362		(6		)	—		—			3,362		(6		)
MBS pass-through securities issued by FHLMC and FNMA	3,518		(1		)	—		—			3,518		(1		)
Total held-to-maturity	9,130		(161		)	—		—			9,130		(161		)
Available-for-sale:
MBS pass-through securities issued by FHLMC and FNMA	162,016		(3,577		)	—		—			162,016		(3,577		)
CMOs issued by FNMA	9,498		(109		)	—		—			9,498		(109		)
CMOs issued by FHLMC	31,545		(731		)	—		—			31,545		(731		)
CMOs issued by GNMA	1,583		(1		)	—		—			1,583		(1		)
Debentures of government- sponsored agencies	19,951		(38		)	9,946		(52		)	29,897		(90		)
Obligations of state and political subdivisions	59,567		(1,740		)	—		—			59,567		(1,740		)
Corporate bonds	154		(1		)	—		—			154		(1		)
Total available-for-sale	284,314		(6,197		)	9,946		(52		)	294,260		(6,249		)
Total temporarily impaired securities	$	293,444	$	(6,358	)	$	9,946	$	(52	)	$	303,390	$	(6,410	)

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As of March 31, 2017, there was one debenture of government-sponsored agency security and one obligation of U.S. state and political subdivisions security that have been in a continuous loss position for twelve months or more. We have evaluated the securities and believe that the decline in fair value is primarily driven by factors other than credit. It is probable that we will be able to collect all amounts due according to the contractual terms and no other-than-temporary impairment exists on these securities. The debenture of government-sponsored agency security is supported by the U.S. Federal Government, which protects us from credit losses. Based upon our assessment of the credit fundamentals, we concluded that these securities were not other-than-temporarily impaired at March 31, 2017.

There were 104 investment securities in our portfolio that had been in temporary loss positions for less than twelve months as of March 31, 2017, and their temporary loss positions mainly arose from changes in interest rates since purchase. They consisted of one debenture of U.S. government-sponsored agencies, 65 obligations of U.S. state and political subdivisions, 28 MBS and eight CMOs issued by government-sponsored agencies, and two corporate bonds. Securities of government-sponsored agencies are supported by the U.S. Federal Government, which protects us from credit losses. Other temporarily impaired securities are deemed creditworthy after internal analysis of the issuers' latest financial information and credit enhancement. Additionally, all are rated as investment grade by at least one major rating agency. As a result of this impairment analysis, we concluded that these securities were not other-than-temporarily impaired at March 31, 2017.

Non-Marketable Securities

As a member of the FHLB, we are required to maintain a minimum investment in FHLB capital stock determined by the Board of Directors of the FHLB. The minimum investment requirements can increase in the event we increase our total asset size or borrowings with the FHLB. Shares cannot be purchased or sold except between the FHLB and its members at the $100 per share par value. We held $10.2 million of FHLB stock recorded at cost in other assets on the consolidated statements of condition at both March 31, 2017 and December 31, 2016. The carrying amounts of these investments are reasonable estimates of fair value because the securities are restricted to member banks and they do not have a readily determinable market value. Management does not believe that the FHLB stock is other-than-temporarily-impaired, due to FHLB's current financial condition. On April 27, 2017, FHLB announced a cash dividend for the first quarter of 2017 at an annualized dividend rate of 7.00% to be distributed in mid-May 2017. Cash dividends paid on FHLB capital stock are recorded as non-interest income.

As a member bank of Visa U.S.A., we hold 16,939 shares of Visa Inc. Class B common stock with a carrying value of zero, which is equal to our cost basis. These shares are restricted from resale until their conversion into Class A (voting) shares upon the termination of Visa Inc.'s Covered Litigation escrow account. As a result of the restriction, these shares are not considered available-for-sale and are not carried at fair value. When converting this Class B common stock to Class A common stock based on the conversion rate of 1.6483 and the closing stock price of Class A shares, the value of our shares of Class B common stock would have been $2.5 million and $2.2 million at March 31, 2017 and December 31, 2016, respectively. The conversion rate is subject to further reduction upon the final settlement of the covered litigation against Visa Inc. and its member banks. For further information, see Note 8, Commitments and Contingencies.

We invest in low income housing tax credit funds as a limited partner, which totaled $2.4 million and $2.5 million recorded in other assets as of March 31, 2017 and December 31, 2016, respectively. In the first three months of 2017, we recognized $87 thousand of low income housing tax credits and other tax benefits, net of $70 thousand of amortization expense of low income housing tax credit investment, as a component of income tax expense. As of March 31, 2017, our unfunded commitments for these low income housing tax credit funds totaled $1.1 million. We did not recognize any impairment losses on these low income housing tax credit investments during the first three months of 2017 or 2016.

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Note 5:  Loans and Allowance for Loan Losses

Credit Quality of Loans

The following table shows outstanding loans by class and payment aging as of March 31, 2017 and December 31, 2016.

Loan Aging Analysis by Loan Class
(in thousands)	Commercial and industrial		Commercial real estate, owner-occupied		Commercial real estate, investor		Construction		Home equity		Other residential 1		Installment and other consumer		Total
March 31, 2017
30-59 days past due	$	600	$	133	$	—	$	—	$	77	$	—	$	24	$	834
60-89 days past due	—		—		1,076		—		—		—		—		1,076
90 days or more past due	—		—		—		—		—		—		—		—
Total past due	600		133		1,076		—		77		—		24		1,910
Current	219,160		254,047		711,005		67,162		115,103		84,720		24,463		1,475,660
Total loans 3	$	219,760	$	254,180	$	712,081	$	67,162	$	115,180	$	84,720	$	24,487	$	1,477,570
Non-accrual loans 2	$	—	$	—	$	1,076	$	—	$	87	$	—	$	52	$	1,215
December 31, 2016
30-59 days past due	$	283	$	—	$	—	$	—	$	77	$	—	$	2	$	362
60-89 days past due	—		—		—		—		—		—		49		49
90 days or more past due	—		—		—		—		91		—		—		91
Total past due	283		—		—		—		168		—		51		502
Current	218,332		247,713		724,228		74,809		117,039		78,549		25,444		1,486,114
Total loans 3	$	218,615	$	247,713	$	724,228	$	74,809	$	117,207	$	78,549	$	25,495	$	1,486,616
Non-accrual loans 2	$	—	$	—	$	—	$	—	$	91	$	—	$	54	$	145

¹ Our residential loan portfolio does not include sub-prime loans, nor is it our practice to underwrite loans commonly referred to as "Alt-A mortgages", the characteristics of which are loans lacking full documentation, borrowers having low FICO scores or higher loan-to-value ratios.

² There were no purchased credit impaired ("PCI") loans that had stopped accreting interest at March 31, 2017 and December 31, 2016. Amounts exclude accreting PCI loans of $2.9 million at March 31, 2017 and December 31, 2016, as we have a reasonable expectation about future cash flows to be collected and we continue to recognize accretable yield on these loans in interest income. There were no accruing loans past due more than ninety days at March 31, 2017 or December 31, 2016.

³ Amounts include net deferred loan origination costs of $808 thousand and $883 thousand at March 31, 2017 and December 31, 2016, respectively. Amounts are also net of unaccreted purchase discounts on non-PCI loans of $1.6 million and $1.8 million at March 31, 2017 and December 31, 2016, respectively.

Our commercial loans are generally made to established small and mid-sized businesses to provide financing for their growth and working capital needs, equipment purchases and/or acquisitions.  Management examines historical, current, and projected cash flows to determine the ability of the borrower to repay obligations as agreed. Commercial loans are made based primarily on the identified cash flows of the borrower and secondarily on the underlying collateral and/or guarantor support. The cash flows of borrowers, however, may not occur as expected, and the collateral securing these loans may fluctuate in value. Most commercial and industrial loans are secured by the assets being financed, such as accounts receivable and/or inventory, and typically include a personal guarantee. We target stable businesses with guarantors that have proven to be resilient in periods of economic stress.  Typically, the guarantors provide an additional source of repayment for most of our credit extensions.

Commercial real estate loans are subject to underwriting standards and processes similar to commercial loans discussed above. We underwrite these loans to be repaid from cash flow and to be supported by real property collateral. Underwriting standards for commercial real estate loans include, but are not limited to, debt coverage and loan-to-value ratios. Furthermore, substantially all of our loans are guaranteed by the owners of the properties.  Commercial real estate loans may be adversely affected by conditions in the real estate markets or in the general economy. In the event of a vacancy, guarantors are expected to carry the loans until a replacement tenant can be found.  The owner's substantial equity investment provides a strong economic incentive to continue to support the commercial real estate projects. As such, we have generally experienced a relatively low level of loss and delinquencies in this portfolio.

Construction loans are generally made to developers and builders to finance construction, renovation and occasionally land acquisitions in anticipation of near-term development. These loans are underwritten after evaluation of the borrower's financial strength, reputation, prior track record, and independent appraisals. The construction industry can be affected by significant events, including: the inherent volatility of real estate markets and vulnerability to delays due to weather, change orders, inability to obtain construction permits, labor or material shortages, and price changes.

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Estimates of construction costs and value associated with the completed project may be inaccurate. Repayment of construction loans is largely dependent on the ultimate success of the project.

Consumer loans primarily consist of home equity lines of credit, other residential (tenancy-in-common, or “TIC”) loans, floating homes and mobile homes along with a small number of installment loans. We originate consumer loans utilizing credit score information, debt-to-income ratio and loan-to-value ratio analysis. Diversification among consumer loan types, coupled with relatively small loan amounts that are spread across many individual borrowers, mitigates risk. Our other residential loans includes TIC units located almost entirely in San Francisco county.

We use a risk rating system to evaluate asset quality, and to identify and monitor credit risk in individual loans, and in the loan portfolio. Definitions of loans that are risk graded “Special Mention” or worse are consistent with those used by the Federal Deposit Insurance Corporation ("FDIC").  Our internally assigned grades are as follows:

Pass and Watch: Loans to borrowers of acceptable or better credit quality. Borrowers in this category demonstrate fundamentally sound financial positions, repayment capacity, credit history and management expertise.  Loans in this category must have an identifiable and stable source of repayment and meet the Bank’s policy regarding debt service coverage ratios.  These borrowers are capable of sustaining normal economic, market or operational setbacks without significant financial consequences.  Negative external industry factors are generally not present.  The loan may be secured, unsecured or supported by non-real estate collateral for which the value is more difficult to determine and/or marketability is more uncertain. This category also includes “Watch” loans, where the primary source of repayment has been delayed. “Watch” is intended to be a transitional grade, with either an upgrade or downgrade within a reasonable period.

Special Mention: Potential weaknesses that deserve close attention. If left uncorrected, those potential weaknesses may result in deterioration of the payment prospects for the asset. Special Mention assets do not present sufficient risk to warrant adverse classification.

Substandard: Inadequately protected by either the current sound worth and paying capacity of the obligor or the collateral pledged, if any. A Substandard asset has a well-defined weakness or weaknesses that jeopardize(s) the liquidation of the debt. Substandard assets are characterized by the distinct possibility that we will sustain some loss if such weaknesses or deficiencies are not corrected. Well-defined weaknesses include adverse trends or developments of the borrower’s financial condition, managerial weaknesses and/or significant collateral deficiencies.

Doubtful: Critical weaknesses that make collection or liquidation in full improbable. There may be specific pending events that work to strengthen the asset; however, the amount or timing of the loss may not be determinable. Pending events generally occur within one year of the asset being classified as Doubtful. Examples include: merger, acquisition, or liquidation; capital injection; guarantee; perfecting liens on additional collateral; and refinancing. Such loans are placed on non-accrual status and usually are collateral-dependent.

We regularly review our credits for accuracy of risk grades whenever new information is received. Borrowers are required to submit financial information at regular intervals. Generally, commercial borrowers with lines of credit are required to submit financial information with reporting intervals ranging from monthly to annually depending on credit size, risk and complexity. Investor commercial real estate borrowers are generally required to submit rent rolls or property income statements annually. Construction loans are monitored monthly, and reviewed on an ongoing basis. Home equity and other consumer loans are reviewed based on delinquency. Loans graded “Watch” or worse, regardless of loan type, are reviewed no less than quarterly.

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The following table represents an analysis of the carrying amount in loans, net of deferred fees and costs and purchase premiums or discounts, by internally assigned risk grades, including PCI loans, at March 31, 2017 and December 31, 2016.

Credit Risk Profile by Internally Assigned Risk Grade
(in thousands)	Commercial and industrial		Commercial real estate, owner-occupied		Commercial real estate, investor		Construction		Home equity		Other residential		Installment and other consumer		Purchased credit-impaired		Total
March 31, 2017
Pass	$	201,777	$	239,437	$	707,223	$	63,921	$	113,868	$	84,720	$	24,081	$	2,937	$	1,437,964
Special Mention	4,554		4,573		249		—		—		—		—		—		9,376
Substandard	13,388		9,077		2,909		3,241		1,209		—		406		—		30,230
Total loans	$	219,719	$	253,087	$	710,381	$	67,162	$	115,077	$	84,720	$	24,487	$	2,937	$	1,477,570
December 31, 2016
Pass	$	201,987	$	234,849	$	720,417	$	71,564	$	115,680	$	78,549	$	25,083	$	2,920	$	1,451,049
Special Mention	9,197		4,799		607		—		1,334		—		—		—		15,937
Substandard	7,391		6,993		1,498		3,245		91		—		412		—		19,630
Total loans	$	218,575	$	246,641	$	722,522	$	74,809	$	117,105	$	78,549	$	25,495	$	2,920	$	1,486,616

Troubled Debt Restructuring

Our loan portfolio includes certain loans that have been modified in a troubled debt restructuring (“TDR”), where economic concessions have been granted to borrowers experiencing financial difficulties. These concessions typically result from our loss mitigation activities and could include reductions in the interest rate, payment extensions, forgiveness of principal, forbearance or other actions. TDRs on non-accrual status at the time of restructure may be returned to accruing status after Management considers the borrower’s sustained repayment performance for a reasonable period, generally six months, and obtains reasonable assurance of repayment and performance.

A loan may no longer be reported as a TDR if all of the following conditions are met:

• The loan is subsequently refinanced or restructured at current market interest rates and the new terms are consistent with the treatment of creditworthy borrowers under regular underwriting standards;

• The borrower is no longer considered to be in financial difficulty;

• Performance on the loan is reasonably assured; and;

• Existing loan did not have any forgiveness of principal or interest.

The removal of TDR status must be approved by the same Management level that approved the upgrading of the loan classification. There were no loans removed from TDR designation during 2017 and 2016.

The following table summarizes the carrying amount of TDR loans by loan class as of March 31, 2017 and December 31, 2016. The summary includes both TDRs that are on non-accrual status and those that continue to accrue interest.

(in thousands)
Recorded investment in Troubled Debt Restructurings 1	March 31, 2017		December 31, 2016
Commercial and industrial	$	2,070	$	2,207
Commercial real estate, owner-occupied	7,001		6,993
Commercial real estate, investor	2,235		2,256
Construction	3,241		3,245
Home equity	623		625
Other residential	1,175		1,965
Installment and other consumer	895		877
Total	$	17,240	$	18,168

¹ There were no TDR loans on non-accrual status at March 31, 2017 and December 31, 2016.

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The following table presents information for loans modified in a TDR during the presented periods, including the number of contracts modified, the recorded investment in the loans prior to modification, and the recorded investment in the loans after being restructured. The table excludes fully charged-off TDR loans and loans modified in a TDR and subsequently paid-off during the years presented.

(dollars in thousands)	Number of Contracts Modified	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment at Period End
Troubled Debt Restructurings during the three months ended March 31, 2017:
Installment and other consumer	1	$	50	$	50	$	50
Troubled Debt Restructurings during the three months ended March 31, 2016:
Commercial real estate, investor	1	$	1,549	$	1,546	$	1,541

The modifications during the three months endedMarch 31, 2017 and 2016 primarily involved interest rate concessions and other changes to loan terms. During the first three months of 2017 and 2016, there were no defaults on loans that had been modified in a TDR within the prior twelve-month period. We report defaulted TDRs based on a payment default definition of more than ninety days past due.

Impaired Loans

The following tables summarize information by class on impaired loans and their related allowances. Total impaired loans include non-accrual loans, accruing TDR loans and accreting PCI loans that have experienced post-acquisition declines in cash flows expected to be collected.

(in thousands)	Commercial and industrial		Commercial real estate, owner-occupied		Commercial real estate, investor		Construction		Home equity		Other residential		Installment and other consumer		Total
March 31, 2017
Recorded investment in impaired loans:
With no specific allowance recorded	$	314	$	—	$	1,076	$	2,690	$	88	$	1,175	$	99	$	5,442
With a specific allowance recorded	1,756		7,001		2,235		551		623		—		847		13,013
Total recorded investment in impaired loans	$	2,070	$	7,001	$	3,311	$	3,241	$	711	$	1,175	$	946	$	18,455
Unpaid principal balance of impaired loans	$	2,054	$	6,993	$	3,323	$	3,238	$	708	$	1,174	$	946	$	18,436
Specific allowance	28		157		374		6		10		—		98		673
Average recorded investment in impaired loans during the quarter ended March 31, 2017	2,138		6,997		2,783		3,243		713		1,571		939		18,384
Interest income recognized on impaired loans during the quarter ended March 31, 2017 1	23		66		23		34		8		19		10		183
Average recorded investment in impaired loans during the quarter ended March 31, 2016	4,283		6,993		3,129		3,238		868		2,004		1,239		21,754
Interest income recognized on impaired loans during the quarter ended March 31, 2016 1	57		66		16		38		4		23		13		217

¹ No interest income on impaired loans was recognized on a cash basis during the three months ended March 31, 2017 and March 31, 2016.

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(in thousands)	Commercial and industrial		Commercial real estate, owner-occupied		Commercial real estate, investor		Construction		Home equity		Other residential		Installment and other consumer		Total
December 31, 2016
Recorded investment in impaired loans:
With no specific allowance recorded	$	315	$	—	$	—	$	2,692	$	91	$	1,008	$	103	$	4,209
With a specific allowance recorded	1,892		6,993		2,256		553		624		957		829		14,104
Total recorded investment in impaired loans	$	2,207	$	6,993	$	2,256	$	3,245	$	715	$	1,965	$	932	$	18,313
Unpaid principal balance of impaired loans	$	2,177	$	6,993	$	2,252	$	3,238	$	713	$	1,965	$	932	$	18,270
Specific allowance	$	285	$	163	$	375	$	8	$	7	$	55	$	98	$	991

Management monitors delinquent loans continuously and identifies problem loans, generally loans graded substandard or worse, loans on non-accrual status and loans modified in a TDR, to be evaluated individually for impairment testing. Generally, the recorded investment in impaired loans is net of any charge-offs from estimated losses related to specifically-identified impaired loans when they are deemed uncollectible. There were no charged-off portions of impaired loans outstanding at March 31, 2017 and December 31, 2016. In addition, the recorded investment in impaired loans is net of purchase discounts or premiums on acquired loans and deferred fees and costs. At March 31, 2017 and December 31, 2016, respectively, unused commitments to extend credit on impaired loans, including performing loans to borrowers whose terms have been modified in TDRs, totaled $1.3 million and $1.6 million.

The following tables disclose activity in the allowance for loan losses ("ALLL") and the recorded investment in loans by class, as well as the related ALLL disaggregated by impairment evaluation method.

Allowance for Loan Losses Rollforward for the Period
(in thousands)	Commercial and industrial			Commercial real estate, owner-occupied			Commercial real estate, investor			Construction			Home equity		Other residential			Installment and other consumer			Unallocated			Total
Three months ended March 31, 2017
Beginning balance	$	3,248		$	1,753		$	6,320		$	781		$	973	$	454		$	372		$	1,541		$	15,442
Provision (reversal)	1,386			239			(187		)	(235		)	17		(10		)	(11		)	(1,199		)	—
Charge-offs	(284		)	—			—			—			—		—			(3		)	—			(287		)
Recoveries	63			—			—			—			—		—			1			—			64
Ending balance	$	4,413		$	1,992		$	6,133		$	546		$	990	$	444		$	359		$	342		$	15,219
Three months ended March 31, 2016
Beginning balance	$	3,023		$	2,249		$	6,178		$	724		$	910	$	394		$	425		$	1,096		$	14,999
Provision (reversal)	(247		)	(630		)	388			98			133		36			9			213			—
Charge-offs	(9		)	—			—			—			—		—			—			—			(9		)
Recoveries	32			—			5			—			1		—			—			—			38
Ending balance	$	2,799		$	1,619		$	6,571		$	822		$	1,044	$	430		$	434		$	1,309		$	15,028

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Allowance for Loan Losses and Recorded Investment in Loans
(dollars in thousands)	Commercial and industrial			Commercial real estate, owner-occupied			Commercial real estate, investor			Construction			Home equity			Other residential			Installment and other consumer			Unallocated		Total
March 31, 2017
Ending ALLL related to loans collectively evaluated for impairment	$	4,385		$	1,835		$	5,759		$	540		$	980		$	444		$	261		$	342	$	14,546
Ending ALLL related to loans individually evaluated for impairment	28			157			374			6			10			—			98			—		673
Ending ALLL related to purchased credit-impaired loans	—			—			—			—			—			—			—			—		—
Ending balance	$	4,413		$	1,992		$	6,133		$	546		$	990		$	444		$	359		$	342	$	15,219
Recorded Investment:
Collectively evaluated for impairment	$	217,649		$	246,086		$	707,070		$	63,921		$	114,366		$	83,545		$	23,541		$	—	$	1,456,178
Individually evaluated for impairment	2,070			7,001			3,311			3,241			711			1,175			946			—		18,455
Purchased credit-impaired	41			1,093			1,700			—			103			—			—			—		2,937
Total	$	219,760		$	254,180		$	712,081		$	67,162		$	115,180		$	84,720		$	24,487		$	—	$	1,477,570
Ratio of allowance for loan losses to total loans	2.01		%	0.78		%	0.86		%	0.81		%	0.86		%	0.52		%	1.47		%	NM		1.03		%
Allowance for loan losses to non-accrual loans	NM			NM			570		%	NM			1,138		%	NM			690		%	NM		1,253		%

NM - Not Meaningful

Allowance for Loan Losses and Recorded Investment in Loans
(dollars in thousands)	Commercial and industrial			Commercial real estate, owner-occupied			Commercial real estate, investor			Construction			Home equity			Other residential			Installment and other consumer			Unallocated		Total
December 31, 2016
Ending ALLL related to loans collectively evaluated for impairment	$	2,963		$	1,590		$	5,945		$	773		$	966		$	399		$	274		$	1,541	$	14,451
Ending ALLL related to loans individually evaluated for impairment	285			163			375			8			7			55			98			—		991
Ending ALLL related to purchased  credit-impaired loans	—			—			—			—			—			—			—			—		—
Ending balance	$	3,248		$	1,753		$	6,320		$	781		$	973		$	454		$	372		$	1,541	$	15,442
Recorded Investment:
Collectively evaluated for impairment	$	216,368		$	239,648		$	720,266		$	71,564		$	116,390		$	76,584		$	24,563		$	—	$	1,465,383
Individually evaluated for impairment	2,207			6,993			2,256			3,245			715			1,965			932			—		18,313
Purchased credit-impaired	40			1,072			1,706			—			102			—			—			—		2,920
Total	$	218,615		$	247,713		$	724,228		$	74,809		$	117,207		$	78,549		$	25,495		$	—	$	1,486,616
Ratio of allowance for loan losses to total loans	1.49		%	0.71		%	0.87		%	1.04		%	0.83		%	0.58		%	1.46		%	NM		1.04		%
Allowance for loan losses to non-accrual loans	NM			NM			NM			NM			1,071		%	NM			683		%	NM		10,650		%

NM - Not Meaningful

Purchased Credit-Impaired Loans

Acquired loans are considered credit-impaired if there is evidence of significant deterioration of credit quality since origination and it is probable, at the acquisition date, that we will be unable to collect all contractually required payments receivable. Management has determined certain loans purchased in our two bank acquisitions to be PCI loans based on credit indicators such as nonaccrual status, past due status, loan risk grade, loan-to-value ratio, etc. Revolving credit agreements (e.g., home equity lines of credit and revolving commercial loans) are not considered PCI loans as cash flows cannot be reasonably estimated.

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The following table reflects the unpaid principal balance and related carrying value of PCI loans.

PCI Loans	March 31, 2017				December 31, 2016
(in thousands)	Unpaid Principal Balance		Carrying Value		Unpaid Principal Balance		Carrying Value
Commercial and industrial	$	42	$	41	$	45	$	40
Commercial real estate, owner occupied	1,332		1,093		1,344		1,072
Commercial real estate, investor	1,702		1,700		1,713		1,706
Home equity	247		103		248		102
Total purchased credit-impaired loans	$	3,323	$	2,937	$	3,350	$	2,920

The activities in the accretable yield, or income expected to be earned over the remaining lives of the PCI loans were as follows:

Accretable Yield	Three months ended
(in thousands)	March 31, 2017			March 31, 2016
Balance at beginning of period	$	1,476		$	2,618
Additions	—			—
Removals 1	—			(778		)
Accretion	(90		)	(98		)
Reclassifications from nonaccretable difference 2	—			—
Balance at end of period	$	1,386		$	1,742

¹ Represents the accretable difference that is relieved when a loan exits the PCI population due to pay-off, full charge-off, or transfer to repossessed assets, etc.

² Primarily relates to changes in expected credit performance and changes in expected timing of cash flows.

Pledged Loans

Our FHLB line of credit is secured under terms of a blanket collateral agreement by a pledge of certain qualifying loans with an unpaid principal balance of $882.6 million and $869.2 million at March 31, 2017 and December 31, 2016, respectively. In addition, we pledge a certain residential loan portfolio, which totaled $55.8 million and $54.6 million at March 31, 2017 and December 31, 2016, respectively, to secure our borrowing capacity with the Federal Reserve Bank ("FRB"). Also see Note 6, Borrowings.

Related Party Loans

The Bank has, and expects to have in the future, banking transactions in the ordinary course of its business with directors, officers, principal shareholders and their businesses or associates. These transactions, including loans, are granted on substantially the same terms, including interest rates and collateral on loans, as those prevailing at the same time for comparable transactions with persons not related to us. Likewise, these transactions do not involve more than the normal risk of collectability or present other unfavorable features. During the first quarter of 2017, a new director joined our Board of Directors resulting in the reclassification of existing loans to the director's business to related party status. Related party loans totaled $9.5 million at March 31, 2017 compared to $2.0 million at December 31, 2016. In addition, undisbursed commitments to related parties totaled $9.1 million and $1.1 million at March 31, 2017 and December 31, 2016, respectively.

Note 6: Borrowings

Federal Funds Purchased – The Bank had unsecured lines of credit totaling $92.0 million with correspondent banks for overnight borrowings at both March 31, 2017 and December 31, 2016.  In general, interest rates on these lines approximate the federal funds target rate. We had no overnight borrowings under these credit facilities at March 31, 2017 or December 31, 2016.

Federal Home Loan Bank Borrowings – As of March 31, 2017 and December 31, 2016, the Bank had lines of credit with the FHLB totaling $505.9 million and $513.7 million, respectively, based on eligible collateral of certain loans. We had no FHLB overnight borrowings at March 31, 2017or December 31, 2016.

Federal Reserve Line of Credit – The Bank has a line of credit with the Federal Reserve Bank of San Francisco ("FRBSF") secured by certain residential loans.  At March 31, 2017 and December 31, 2016, the Bank had borrowing

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capacity under this line totaling $43.9 million and $43.1 million, respectively, and had no outstanding borrowings with the FRBSF.

As part of an acquisition, Bancorp assumed two subordinated debentures due to NorCal Community Bancorp Trusts I and II (the "Trusts"), established for the sole purpose of issuing trust preferred securities on September 22, 2003 and December 29, 2005, respectively. The trust preferred securities were sold and issued in private transactions pursuant to an exemption from registration under the Securities Act of 1933, as amended. Bancorp has guaranteed, on a subordinated basis, distributions and other payments due on trust preferred securities totaling $8.0 million issued by the Trusts which have identical maturity, repricing and payment terms as the subordinated debentures. The subordinated debentures were recorded at fair values totaling $4.95 million at acquisition date with contractual values totaling $8.2 million. The difference between the contractual balance and the fair value at acquisition date is accreted into interest expense over the lives of the debentures. Accretion on the subordinated debentures totaled $42 thousand and $50 thousand in the first three months of 2016 and 2017, respectively. Bancorp has the option to defer payment of the interest on the subordinated debentures for a period of up to five years, as long as there is no default on the subordinated debentures. In the event of interest deferral, dividends to Bancorp common stockholders are prohibited.

The following is a summary of the contractual terms of the subordinated debentures due to the Trusts as of March 31, 2017:

(in thousands)
Subordinated debentures due to NorCal Community Bancorp Trust I on October 7, 2033 with interest payable quarterly, based on 3-month LIBOR plus 3.05%, repricing quarterly (4.07% as of March 31, 2017), redeemable, in whole or in part, on any interest payment date	$	4,124
Subordinated debentures due to NorCal Community Bancorp Trust II on March 15, 2036 with interest payable quarterly, based on 3-month LIBOR plus 1.40%, repricing quarterly (2.53% as of March 31, 2017), redeemable, in whole or in part, on any interest payment date	4,124
Total	$	8,248

Note 7:  Stockholders' Equity

Dividends

Presented below is a summary of cash dividends paid to common shareholders, recorded as a reduction of retained earnings.

	Three months ended
(in thousands, except per share data)	March 31, 2017		March 31, 2016
Cash dividends to common stockholders	$	1,655	$	1,518
Cash dividends per common share	$	0.27	$	0.25

The Board of Directors declared a cash dividend of $0.27 per share on April 21, 2017 payable on May 12, 2017 to shareholders of record at the close of business on May 5, 2017.

Share-Based Payments

The fair value of stock options as of the grant date is recorded as stock-based compensation expense in the consolidated statements of comprehensive income over the requisite service period with a corresponding increase in common stock. Stock-based compensation also includes compensation expense related to the issuance of unvested restricted stock awards and performance-based stock awards pursuant to the 2007 Equity Plan. The grant-date fair value of the restricted stock awards and performance-based stock awards, which is equal to the intrinsic value on that date, is being recorded as compensation expense over the requisite service period with a corresponding increase in common stock as the shares vest.

Performance-based stock awards are issued to a selected group of employees. Stock award vesting is contingent upon the achievement of pre-established long-term performance goals set by the Compensation Committee of the Board of Directors. Performance is measured over a three-year period and cliff vested. These performance-based stock awards were granted at a maximum opportunity level, and based on the achievement of the pre-established

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goals, the actual payouts can range from 0% to 200% of the target award. For performance-based stock awards, an estimate is made of the number of shares expected to vest based on the probability that the performance criteria will be achieved to determine the amount of compensation expense to be recognized. The estimate is re-evaluated quarterly and total compensation expense is adjusted for any change in the current period.

We adopted ASU No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting effective January 1, 2017 as discussed in Note 2, which requires us to record excess tax benefits (deficiencies) resulting from the exercise of non-qualified stock options, the disqualifying disposition of incentive stock options and vesting of restricted stock awards as income tax benefits (expense) in the consolidated statements of comprehensive income with a corresponding decrease (increase) to current taxes payable. Previous to the adoption of this ASU, excess tax benefits (deficiencies) were recognized as an increase to common stock in the consolidated statements of changes in stockholders' equity.

The holders of unvested restricted stock awards and performance-based stock awards are entitled to dividends on the same per-share ratio as holders of common stock. Dividends paid on the portion of share-based awards forfeited or not expected to vest are included in stock-based compensation expense. Upon the adoption of the above ASU, tax benefits on dividends paid on the portion of share-based awards expected to vest are recorded as a tax benefit in the consolidated statements of comprehensive income with a corresponding decrease to current taxes payable. Previous to the adoption of the ASU, tax benefits on dividends were recognized as an increase to common stock in the consolidated statements of changes in stockholders' equity.

Under the 2007 Equity Plan, stock options may be net settled by a reduction in the number of shares otherwise deliverable upon exercise in satisfaction of the exercise payment and applicable tax withholding requirements. During the first quarter of 2017, we withheld 4,715 shares totaling $342 thousand at a weighted average price of $68.80 for cashless stock option exercises. There were no stock options exercised under net settlement arrangements in 2016. Shares withheld under net settlement arrangements are available for future grants under the 2007 Equity Plan.

Note 8:  Commitments and Contingencies

Financial Instruments with Off-Balance Sheet Risk

We make commitments to extend credit in the normal course of business to meet the financing needs of our customers. These financial instruments include commitments to extend credit in the form of loans or through standby letters of credit. 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 or other termination clauses and may require payment of a fee. Because various commitments will expire without being fully drawn upon, the total commitment amount does not necessarily represent future cash requirements.

We are exposed to credit loss equal to the contractual amount of the commitment in the event of nonperformance by the borrower. We use the same credit underwriting criteria for all credit exposure. The amount of collateral obtained, if deemed necessary by us, is based on Management's credit evaluation of the borrower. Collateral types pledged may include accounts receivable, inventory, other personal property and real property.

The contractual amount of undrawn loan commitments and standby letters of credit not reflected on the consolidated statements of condition are as follows:

(in thousands)	March 31, 2017		December 31, 2016
Commercial lines of credit	$	214,491	$	216,774
Revolving home equity lines	155,234		148,143
Undisbursed construction loans	33,498		44,798
Personal and other lines of credit	10,741		10,635
Standby letters of credit	1,829		1,939
Total commitments and standby letters of credit	$	415,793	$	422,289

We record an allowance for losses on these off-balance sheet commitments based on an estimate of probabilities of these commitments being drawn upon according to our historical utilization experience on different types of commitments and expected loss. We set aside an allowance for losses on off-balance sheet commitments in the

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amount of $1.1 million and $899 thousand as of March 31, 2017 and December 31, 2016, respectively, which is recorded in interest payable and other liabilities on the consolidated statements of condition.

Operating Leases

We rent certain premises under long-term, non-cancelable operating leases expiring at various dates through the year 2032. Most of the leases contain certain renewal options and escalation clauses. At March 31, 2017, the approximate minimum future commitments payable under non-cancelable contracts for leased premises are as follows:

(in thousands)	2017		2018		2019		2020		2021		Thereafter		Total
Operating leases1	$	2,928	$	3,932	$	3,739	$	3,420	$	2,138	$	4,234	$	20,391

¹ Minimum payments have not been reduced by minimum sublease rentals of $126 thousand due in the future under non-cancelable subleases.

Rent expense included in occupancy expense totaled $1.0 million for the three months ended March 31, 2017 and 2016.

Litigation Matters

We may be party to legal actions which arise from time to time during the normal course of business.  We believe, after consultation with legal counsel, that litigation contingent liability, if any, would not have a material adverse effect on our consolidated financial position, results of operations, or cash flows.

We are responsible for our proportionate share of certain litigation indemnifications provided to Visa U.S.A. ("Visa") by its member banks in connection with lawsuits related to anti-trust charges and interchange fees ("Covered Litigation"). Visa maintains an escrow account from which settlements of, or judgments in, the Covered Litigation are paid. While the accrual related to the Covered Litigation could be higher or lower than the litigation escrow account balance, Visa did not record an additional accrual for the Covered Litigation during the quarter ended March 31, 2017. At March 31, 2017, according to the latest SEC Form 10-Q filed by Visa, Inc. on April 21 2017, the balance of the escrow account was $978.0 million. In 2012, Visa reached a $4.0 billion interchange multidistrict litigation class settlement agreement. However, in February 2017, a number of class plaintiffs sought to either file an amended complaint for damages or file a new class complaint against Visa claiming for putative injunction relief. Visa has reached settlement agreements with individual merchants representing 34% of the sales volume of merchants who opted out of the 2012 Settlement Agreement. Litigation is ongoing and until the appeal process is complete, Visa is uncertain whether it will resolve the claims as contemplated by the settlement agreement and additional lawsuits may arise. The conversion rate of Visa Class B common stock held by us to Class A common stock (as discussed in Note 4 above) may decrease if Visa makes more Covered Litigation settlement payments in the future, and the full effect on member banks is still uncertain. However, we are not aware of significant future cash settlement payments required by us on the Covered Litigation.

Note 9: Derivative Financial Instruments and Hedging Activities

We have entered into interest rate swap agreements, primarily as an asset/liability management strategy, in order to mitigate the changes in the fair value of specified long-term fixed-rate loans (or firm commitments to enter into long-term fixed-rate loans) caused by changes in interest rates. These hedges allow us to offer long-term fixed-rate loans to customers without assuming the interest rate risk of a long-term asset. Converting our fixed-rate interest payments to floating-rate interest payments, generally benchmarked to the one-month U.S. dollar LIBOR index, protects us against changes in the fair value of our loans associated with fluctuating interest rates.

Our credit exposure, if any, on interest rate swap asset positions is limited to the fair value (net of any collateral pledged to us) and interest payments of all swaps by each counterparty. Conversely, when an interest rate swap is in a liability position exceeding a certain threshold, we may be required to post collateral to the counterparty in an amount determined by the agreements. Collateral levels are monitored and adjusted on a regular basis for changes in interest rate swap values.

As of March 31, 2017, we had five interest rate swap agreements, which are scheduled to mature in June 2031, October 2031, July 2032, August 2037 and October 2037. All of our derivatives are accounted for as fair value hedges. The notional amounts of the interest rate contracts are equal to the notional amounts of the hedged loans. Our interest rate swap payments are settled monthly with counterparties. Accrued interest on the swaps totaled $12 thousand and $13 thousand as of March 31, 2017 and December 31, 2016, respectively.

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Information on our derivatives follows:

	Asset derivatives				Liability derivatives
(in thousands)	March 31, 2017		December 31, 2016		March 31, 2017		December 31, 2016
Fair value hedges:
Interest rate contracts notional amount	$	4,168	$	4,217	$	15,324	$	15,495
Interest rate contracts fair value1	$	70	$	55	$	837	$	933

	Three months ended
(in thousands)	March 31, 2017			March 31, 2016
Increase (decrease) in value of designated interest rate swaps due to LIBOR interest rate movements recognized in interest income	$	111		$	(876	)
Payment on interest rate swaps recorded in interest income	(98		)	(174		)
(Decrease) increase in value of hedged loans recognized in interest income	(113		)	1,050
Decrease in value of yield maintenance agreement recognized against interest income	(4		)	(12		)
Net loss on derivatives recognized against interest income 2	$	(104	)	$	(12	)

¹ See Note 3, Fair Value of Assets and Liabilities, for valuation methodology.

² Includes hedge ineffectiveness loss of $6 thousand and gain of $162 thousand for the quarters ended March 31, 2017 and March 31, 2016, respectively. Changes in value of swaps were included in the assessment of hedge effectiveness. Hedge ineffectiveness is the measure of the extent to which the change in the fair value of the hedging instruments does not exactly offset the change in the fair value of the hedged items from period to period.

Our derivative transactions with counterparties are under International Swaps and Derivative Association (“ISDA”) master agreements that include “right of set-off” provisions. “Right of set-off” provisions are legally enforceable rights to offset recognized amounts and there may be an intention to settle such amounts on a net basis. We do not offset such financial instruments for financial reporting purposes.

Information on financial instruments that are eligible for offset in the consolidated statements of condition follows:

Offsetting of Financial Assets and Derivative Assets
			Gross Amounts		Net Amounts of		Gross Amounts Not Offset in
	Gross Amounts		Offset in the		Assets Presented		the Statements of Condition
	of Recognized		Statements of		in the Statements		Financial			Cash Collateral
(in thousands)	Assets1		Condition		of Condition1		Instruments			Received		Net Amount
March 31, 2017
Derivatives by Counterparty:
Counterparty A	$	70	$	—	$	70	$	(70	)	$	—	$	—
December 31, 2016
Derivatives by Counterparty:
Counterparty A	$	55	$	—	$	55	$	(55	)	$	—	$	—

¹Amounts exclude accrued interest totaling $1 thousand at both March 31, 2017 and December 31, 2016, respectively.

Offsetting of Financial Liabilities and Derivative Liabilities
			Gross Amounts		Net Amounts of		Gross Amounts Not Offset in
	Gross Amounts		Offset in the		Liabilities Presented		the Statements of Condition
	of Recognized		Statements of		in the Statements		Financial			Cash Collateral
(in thousands)	Liabilities2		Condition		of Condition2		Instruments			Pledged			Net Amount
March 31, 2017
Derivatives by Counterparty:
Counterparty A	$	837	$	—	$	837	$	(70	)	$	(767	)	$	—
December 31, 2016
Derivatives by Counterparty:
Counterparty A	$	933	$	—	$	933	$	(55	)	$	(878	)	$	—

² Amounts exclude accrued interest totaling $11 thousand and $12 thousand at March 31, 2017 and December 31, 2016, respectively.

For more information on how we account for our interest rate swaps, refer to Note 1 to the Consolidated Financial Statements included in our 2016 Form 10-K filed with the SEC on March 14, 2017.

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

Management's discussion of the financial condition and results of operations, which is unaudited, should be read in conjunction with the related consolidated financial statements in this Form 10-Q and with the audited consolidated financial statements and accompanying notes included in our 2016 Annual Report on Form 10-K. Average balances, including balances used in calculating certain financial ratios, are generally comprised of average daily balances.

Forward-Looking Statements

This discussion of financial results includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, (the "1933 Act") and Section 21E of the Securities Exchange Act of 1934, as amended, (the "1934 Act"). Those sections of the 1933 Act and 1934 Act provide a "safe harbor" for forward-looking statements to encourage companies to provide prospective information about their financial performance so long as they provide meaningful, cautionary statements identifying important factors that could cause actual results to differ significantly from projected results.

Our forward-looking statements include descriptions of plans or objectives of Management for future operations, products or services, and forecasts of revenues, earnings or other measures of economic performance. Forward-looking statements can be identified by the fact that they do not relate strictly to historical or current facts. They often include the words "believe," "expect," "intend," "estimate" or words of similar meaning, or future or conditional verbs preceded by "will," "would," "should," "could" or "may."

Forward-looking statements are based on Management's current expectations regarding economic, legislative, and regulatory issues that may affect our earnings in future periods. A number of factors, many of which are beyond Management’s control, could cause future results to vary materially from current Management expectations. Such factors include, but are not limited to, general economic conditions and the economic uncertainty in the United States and abroad, including changes in interest rates, deposit flows, real estate values, and expected future cash flows on loans and securities; integration of acquisitions; competition; changes in accounting principles, policies or guidelines; changes in legislation or regulation; natural disasters; adverse weather conditions; and other economic, competitive, governmental, regulatory and technological factors affecting our operations, pricing, products and services.

Important factors that could cause results or performance to materially differ from those expressed in our prior forward-looking statements are detailed in Item 1A. Risk Factors section of our 2016 Form 10-K as filed with the SEC, copies of which are available from us at no charge. Forward-looking statements speak only as of the date they are made. We do not undertake to update forward-looking statements to reflect circumstances or events that occur after the date the forward-looking statements are made or to reflect the occurrence of unanticipated events.

Critical Accounting Policies and Estimates

Critical accounting policies are those that are both very important to the portrayal of our financial condition and results of operations and require Management's most difficult, subjective, or complex judgments, often as a result of the need to make estimates about the effect of matters that are inherently uncertain and imprecise. There have been no material changes to our critical accounting policies, which include: Allowance for Loan Losses, Other-than-temporary Impairment of Investment Securities, Accounting for Income Taxes, and Fair Value Measurements. For a detailed discussion, refer to Note 1 to the Consolidated Financial Statements included in our 2016 Form 10-K filed with the SEC on March 14, 2017.

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Executive Summary

Earnings in the first quarter of 2017 totaled $4.5 million, compared to $5.6 million in the first quarter of 2016. Diluted earnings per share of $0.74 in the first quarter of 2017 decreased $0.19 from $0.93 in the same quarter a year ago. The decrease is primarily attributed to a decline in gains and accretion on purchase discounts on acquired loans and our investment in staffing to facilitate organic growth.

The following are highlights of our operating and financial performance for the periods presented:

• On-balance-sheet deposits totaled $1,779.3 million at March 31, 2017, compared to $1,772.7 million at December 31, 2016. The normal business activity of our customers produced $61.4 million in non-interest bearing deposit growth during the quarter. Excess liquidity of $46.0 million was converted to one-way money market deposit sales with our third party deposit networks, limiting our deposit growth to $6.6 million, which otherwise would have been $52.6 million. Non-interest bearing deposits represent 49.4% of total deposits, and the cost of total deposits dropped one basis point to 0.07%, from the first quarter of 2016.

• Credit quality remains strong with non-accrual loans totaling $1.2 million, or 0.08% of total loans at March 31, 2017, compared to $145.0 thousand, or 0.01% of total loans at December 31, 2016. A well secured $1.1 million commercial real estate loan was placed on non-accrual status during the first quarter of 2017. Classified loans increased $10.6 million to $30.2 million at March 31, 2017, up from $19.6 million at December 31, 2016. One relationship of $9.6 million and the non-accrual loan of $1.1 million previously mentioned were downgraded to substandard in the first quarter of 2017. Accruing loans past due 30 to 89 days totaled $834 thousand at March 31, 2017, compared to $410 thousand at December 31, 2016.

• Loans decreased by $9.0 million and totaled $1,477.6 million at March 31, 2017, compared to $1,486.6 million at December 31, 2016. New loan volume of $23.9 million in the first quarter of 2017 was $5.2 million lower than the same quarter of 2016. The loan pipeline is considerably stronger than at this time last year, which should translate into loan growth throughout the year.

• Return on assets was 0.91% for the quarter ended March 31, 2017, compared to 1.15% for the quarter ended March 31, 2016. Return on equity was 7.92% for the quarter ended March 31, 2017, compared to 10.38% for the quarter ended March 31, 2016.

• The tax-equivalent net interest margin was 3.79% in the first quarter of 2017, compared to 4.04% in the same quarter a year ago. Net interest income totaled $17.6 million in the first quarter of 2017, compared to $18.6 million in the same quarter last year. The decrease was primarily due to a decline in gains on early payoffs of acquired loans and purchased loan accretion. As our acquired loans continue to pay off, we expect the accretion and gains on acquired loans to continue to decline.

• All capital ratios are above regulatory requirements for a well-capitalized institution. The total risk-based capital ratio for Bancorp was 14.7% at March 31, 2017 compared to 14.3% at December 31, 2016.

Looking forward into 2017, we believe we are well-positioned for the future with strong capital and liquidity, and a low cost deposit base. With a robust loan pipeline, and credit quality that remains at the top of our peer group, we are looking forward to continued success.

• We have ample liquidity and capital to support both organic growth and potential acquisitions.

• Acquisitions remain a component of our strategic plan.

• The Bank is investing in a number of strategic initiatives. This summer we will be opening a new branch office in Healdsburg, California, which will stretch our footprint north and help us solidify our presence in a vibrant and growing market. We will also be expanding our geographic reach by adding a commercial banking office in the East Bay, which continues to be one of the strongest growth markets in the Bay Area region. There were no expenses for these initiatives in the first quarter of 2017.

• Our disciplined credit culture and relationship banking are key to our success as we continue to focus on long-term profitability.

• Although we expect the number of early pay-offs of acquired loans and purchased loan accretion to decline, we cannot predict the timing and their effect on our future net interest margin.

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RESULTS OF OPERATIONS

Highlights of the financial results are presented in the following tables:

(dollars in thousands)	March 31, 2017			December 31, 2016
Selected financial condition data:
Total assets	$	2,033,708		$	2,023,493
Loans, net	1,462,351			1,471,174
Deposits	1,779,269			1,772,700
Borrowings	5,628			5,586
Stockholders' equity	234,986			230,563
Asset quality ratios:
Allowance for loan losses to total loans	1.03%			1.04		%
Allowance for loan losses to non-accrual loans	12.52		x	106.50		x
Non-accrual loans to total loans	0.08%			0.01		%
Capital ratios:
Equity to total assets ratio	11.55		%	11.39		%
Total capital (to risk-weighted assets)	14.68		%	14.32		%
Tier 1 capital (to risk-weighted assets)	13.72		%	13.37		%
Tier 1 capital (to average assets)	11.59		%	11.39		%
Common equity Tier 1 capital (to risk weighted assets)	13.40		%	13.07		%

	Three months ended
(dollars in thousands, except per share data)	March 31, 2017		March 31, 2016
Selected operating data:
Net interest income	$	17,621	$	18,638
Non-interest income	2,115		2,163
Non-interest expense	13,011		12,010
Net income	4,548		5,646
Net income per common share:
Basic	$	0.75	$	0.93
Diluted	$	0.74	$	0.93
Performance and other financial ratios:
Return on average assets	0.91%		1.15%
Return on average equity	7.92%		10.38%
Tax-equivalent net interest margin	3.79%		4.04%
Efficiency ratio	65.92%		57.74%
Dividend payout ratio on common stock	36.00%		26.88%

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Net Interest Income

Net interest income is the difference between the interest earned on loans, investments and other interest-earning assets and the interest expense incurred on deposits and other interest-bearing liabilities. Net interest income is impacted by changes in general market interest rates and by changes in the amounts and composition of interest-earning assets and interest-bearing liabilities. Interest rate changes can create fluctuations in the net interest income and/or margin due to an imbalance in the timing of repricing and maturity of assets and liabilities. We manage interest rate risk exposure with the goal of minimizing the impact of interest rate volatility on net interest income.

Net interest margin is expressed as net interest income divided by average interest-earning assets. Net interest rate spread is the difference between the average rate earned on total interest-earning assets and the average rate incurred on total interest-bearing liabilities. Both of these measures are reported on a taxable-equivalent basis. Net interest margin is the higher of the two because it reflects interest income earned on assets funded with non-interest-bearing sources of funds, which include demand deposits and stockholders’ equity.

Average Statements of Condition and Analysis of Net Interest Income

The following table compares interest income, average interest-earning assets, interest expense, and average interest-bearing liabilities for the periods presented. The table also presents net interest income, net interest margin and net interest rate spread for each period reported.

		Three months ended						Three months ended
		March 31, 2017						March 31, 2016
				Interest						Interest
		Average		Income/		Yield/		Average		Income/		Yield/
(dollars in thousands)		Balance		Expense		Rate		Balance		Expense		Rate
Assets
	Interest-bearing due from banks 1	$	29,339	$	60	0.82	%	$	8,996	$	11	0.48	%
	Investment securities 2, 3	414,552		2,361		2.28	%	428,055		2,264		2.12	%
	Loans 1, 3, 4	1,478,487		16,222		4.39	%	1,442,601		17,456		4.79	%
	Total interest-earning assets 1	1,922,378		18,643		3.88	%	1,879,652		19,731		4.15	%
	Cash and non-interest-bearing due from banks	38,131						29,823
	Bank premises and equipment, net	8,440						9,143
	Interest receivable and other assets, net	58,014						58,195
Total assets		$	2,026,963					$	1,976,813
Liabilities and Stockholders' Equity
	Interest-bearing transaction accounts	$	101,121	$	29	0.12	%	$	100,990	$	27	0.11	%
	Savings accounts	160,913		15		0.04	%	142,499		14		0.04	%
	Money market accounts	518,540		113		0.09	%	528,984		111		0.08	%
	Time accounts including CDARS	146,966		146		0.40	%	160,943		196		0.50	%
	Overnight borrowings 1	—		—		—	%	20,567		22		0.42	%
	FHLB fixed-rate advances 1	—		—		—	%	15,000		78		2.07	%
	Subordinated debentures 1	5,607		108		7.74	%	5,418		109		7.96	%
	Total interest-bearing liabilities	933,147		411		0.18	%	974,401		557		0.23	%
	Demand accounts	846,316						767,579
	Interest payable and other liabilities	14,645						15,980
	Stockholders' equity	232,855						218,853
Total liabilities & stockholders' equity		$	2,026,963					$	1,976,813
Tax-equivalent net interest income/margin 1				$	18,232	3.79	%			$	19,174	4.04	%
Reported net interest income/margin 1				$	17,621	3.67	%			$	18,638	3.92	%
Tax-equivalent net interest rate spread						3.70	%					3.92	%

¹ Interest income/expense is divided by actual number of days in the period times 360 days to correspond to stated interest rate terms, where applicable.

² Yields on available-for-sale securities are calculated based on amortized cost balances rather than fair value, as changes in fair value are reflected as a component of stockholders' equity. Investment security interest is earned on 30/360 day basis monthly.

³ Yields and interest income on tax-exempt securities and loans are presented on a taxable-equivalent basis using the Federal statutory rate of 35 percent.

⁴ Average balances on loans outstanding include non-performing loans. The amortized portion of net loan origination fees is included in interest income on loans, representing an adjustment to the yield.

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Analysis of Changes in Net Interest Income

The following table presents the effects of changes in average balances (volume) or changes in average rates on tax-equivalent net interest income for the years indicated. Volume variances are equal to the increase or decrease in average balances multiplied by prior period rates. Rate variances are equal to the increase or decrease in rates multiplied by prior period average balances. Mix variances are attributable to the change in yields or rates multiplied by the change in average balances.

	Three Months Ended March 31, 2017 Compared to Three Months Ended March 31, 2016
(in thousands)	Volume			Yield/Rate			Mix			Total
Interest-bearing due from banks	$	25		$	8		$	16		$	49
Investment securities 1	(71		)	174			(6		)	97
Loans 1	434			(1,628		)	(40		)	(1,234		)
Total interest-earning assets	388			(1,446		)	(30		)	(1,088		)
Interest-bearing transaction accounts	—			2			—			2
Savings accounts	2			(1		)	—			1
Money market accounts	(2		)	4			—			2
Time accounts, including CDARS	(17		)	(36		)	3			(50		)
FHLB borrowings and overnight borrowings	(100		)	—			—			(100		)
Subordinated debentures	4			(5		)	—			(1		)
Total interest-bearing liabilities	(113		)	(36		)	3			(146		)
	$	501		$	(1,410	)	$	(33	)	$	(942	)
1 Yields and interest income on tax-exempt securities and loans are presented on a taxable-equivalent basis using the federal statutory rate of 35%.

First Quarter of2017Compared to First Quarter of2016

Net interest income totaled $17.6 million in the first quarter of 2017, compared to $18.6 million in the same quarter a year ago. The tax-equivalent net interest margin was 3.79% in the first quarter of 2017, compared to 4.04% in the same quarter in the previous year.  The $1.0 million decrease in net interest income was primarily due to a $928 thousand decline in gains on early payoffs and purchased loan accretion on acquired loans, and a lower yield on the loan portfolio, partially offset by an increase in the yield on investment securities in the first quarter of 2017. Additionally, average earning assets increased $42.7 million to $1,922.4 million in 2017 compared to the first quarter of 2016, while interest expense was lower as a result of the Federal Home Loan Bank ("FHLB") fixed rate advance prepayment in 2016 and no overnight borrowings in the first quarter of 2017. The decrease in the tax-equivalent net interest margin reflects the changes discussed above.

Market Interest Rates

Market interest rates are, in part, based on the target federal funds interest rate (the interest rate banks charge each other for short-term borrowings) implemented by the Federal Reserve Open Market Committee ("FOMC"). In December 2015, December 2016, and March 2017 the FOMC raised the target federal funds rate by 25 basis points to a range of 0.25% to 0.50%, 0.50% to 0.75%, and 0.75% to 1.00%, respectively. The increase in 2017 was the third rate hike since 2008. The prolonged low interest rate environment negatively affected yields on our earning assets, which resulted in significant net interest margin compression over the last several years. If interest rates continue to rise, we anticipate that our net interest income will increase.

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Impact of Acquired Loans on Net Interest Margin

Early pay-offs or prepayments of acquired loans with significant unamortized purchase discount/premium could result in net interest margin volatility and cannot be predicted. As our acquired loans continue to pay off, we expect the accretion on acquired loans to continue to decline. Accretion and gains on pay-offs of purchased loans recorded to interest income were as follows:

	Three months ended
	March 31, 2017			March 31, 2016
(dollars in thousands)	Dollar Amount		Basis point affect on net interest margin	Dollar Amount		Basis point affect on net interest margin
Accretion on PCI loans	$	90	2 bps	$	98	2 bps
Accretion on non-PCI loans	$	150	3 bps	$	330	7 bps
Gains on pay-offs of PCI loans	$	—	0 bps	$	740	16 bps

Provision for Loan Losses

Management assesses the adequacy of the allowance for loan losses quarterly based on several factors including growth of the loan portfolio, analysis of probable losses in the portfolio, historical loss experience and the current economic climate.  Actual losses on loans are charged against the allowance, and the allowance is increased by loss recoveries and provisions for loan losses charged to expense.  

There was no provision for loan losses recorded in the first quarter of 2017, consistent with the same quarter a year ago, as the level of reserves is deemed appropriate for the size and quality of the loan portfolio. Net charge-offs in the first quarter of 2017 totaled $223 thousand compared to net recoveries of $29 thousand in the same quarter a year ago.

The ratio of loan loss reserves to total loans was 1.03% at March 31, 2017, compared to 1.04% at December 31, 2016. At March 31, 2017, total loan loss reserves to loans excluding acquired loans was 1.09%. Non-accrual loans totaled $1.2 million, or 0.08% of total loans, at March 31, 2017, compared to $145 thousand, or 0.01%, at December 31, 2016. A well secured $1.1 million commercial real estate loan was placed on non-accrual status during the first quarter of 2017.

Impaired loan balances totaled $18.5 million at March 31, 2017, compared to $18.3 million at December 31, 2016, with specific valuation allowances of $673 thousand and $991 thousand for the same respective dates. Classified assets (loans with substandard or doubtful risk grades) increased to $30.2 million at March 31, 2017, from $19.6 million at December 31, 2016. The increase was primarily related to one relationship of $9.6 million and the non-accrual loan of $1.1 million mentioned above that were downgraded to substandard in the first quarter of 2017. There were no loans with doubtful risk grades at March 31, 2017 or December 31, 2016.

For more information, refer to Note 5 to the Consolidated Financial Statements in this Form 10-Q.

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Non-interest Income

The table below details the components of non-interest income.

	Three months ended				Amount			Percent
(dollars in thousands)	March 31, 2017		March 31, 2016		Increase (Decrease)			Increase (Decrease)
Service charges on deposit accounts	$	452	$	456	$	(4	)	(0.9	)%
Wealth Management and Trust Services	503		566		(63		)	(11.1	)%
Debit card interchange fees	372		338		34			10.1	%
Merchant interchange fees	96		113		(17		)	(15.0	)%
Earnings on bank-owned life insurance	209		201		8			4.0	%
Dividends on FHLB stock	232		169		63			37.3	%
Gains on investment securities, net	—		110		(110		)	NM
Other income	251		210		41			19.5	%
Total non-interest income	$	2,115	$	2,163	$	(48	)	(2.2	)%

NM - Not Meaningful

First Quarter of2017Compared to First Quarter of2016

Non-interest income decreased by $48 thousand in the first quarter of 2017 to $2.1 million, compared to $2.2 million in the same quarter a year ago. The decrease was primarily due to a $110 thousand decrease in gains from the sale of securities and $63 thousand lower wealth management and trust services fees. These decreases were partially offset by a $63 thousand increase in cash dividends on FHLB stock and a $37 thousand increase in fees collected on one-way deposit sells (included in other income).

Non-interest Expense

The table below details the components of non-interest expense.

	Three months ended				Amount			Percent
(dollars in thousands)	March 31, 2017		March 31, 2016		Increase (Decrease)			Increase (Decrease)
Salaries and related benefits	$	7,475	$	6,748	$	727		10.8	%
Occupancy and equipment	1,319		1,281		38			3.0	%
Depreciation and amortization	481		453		28			6.2	%
Federal Deposit Insurance Corporation insurance	161		261		(100		)	(38.3	)%
Data processing	939		856		83			9.7	%
Professional services	522		498		24			4.8	%
Directors' expense	158		189		(31		)	(16.4	)%
Information technology	198		193		5			2.6	%
Provision for losses on off-balance sheet commitments	165		—		165			NM
Other non-interest expense
Advertising	73		103		(30		)	(29.1	)%
Other expense	1,520		1,428		92			6.4	%
Total other non-interest expense	1,593		1,531		62			4.0	%
Total non-interest expense	$	13,011	$	12,010	$	1,001		8.3	%

NM - Not Meaningful

First Quarter of2017Compared to First Quarter of2016

Non-interest expense increased by $1.0 million to $13.0 million in the first quarter of 2017, compared to $12.0 million in the same quarter a year ago. The increase was primarily due to salaries and benefits related to filling open positions, annual merit increases, an increase in stock-based compensation due to the implementation of ASU 2016-09, and an

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increase in 401(k) matching. In addition, a provision of $165 thousand for off-balance sheet commitments was recorded in the first quarter of 2017, related to the increase in classified loans. These increases were partially offset by lower FDIC assessment expense due to lower assessment rates.

Provision for Income Taxes

The provision for income taxes for the first quarter of 2017 totaled $2.2 million at an effective tax rate of 32.4%, compared to $3.1 million at an effective tax rate of 35.8% in the same quarter last year. The decrease in the effective tax rate is primarily due to higher tax-exempt interest on municipal securities and loans and lower pre-tax income. Additionally, discrete tax benefits from the exercise of stock options and vesting of restricted stock increased in 2017 as a result of the adoption of ASU No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, as discussed in Note 2 to the Consolidated Financial Statements in Item 1 of this report. These provisions reflect accruals for taxes at the applicable rates for federal income tax and California franchise tax based upon reported pre-tax income, and adjusted for the effects of all permanent differences between income for tax and financial reporting purposes (such as earnings on tax exempt loans and municipal securities, BOLI, and low income housing tax credits). There may be fluctuations in the effective rate from period to period based on the relationship of net permanent differences to income before tax.

We file a consolidated return in the U.S. Federal tax jurisdiction and a combined return in the State of California tax jurisdiction. There were no ongoing federal or state income tax examinations at the issuance of this report. At March 31, 2017, neither the Bank nor Bancorp had accruals for interest or penalties related to unrecognized tax benefits.

FINANCIAL CONDITION SUMMARY

Investment Securities

The investment securities portfolio totaled $414.0 million at March 31, 2017, a $3.1 million decrease from December 31, 2016. Year-to-date investment security purchases totaling $8.6 million were offset by paydowns and maturities totaling $12.6 million. Effective February 24, 2017, $129 million in mortgage-backed securities were transferred from available-for-sale securities to held-to-maturity at fair value to reduce balance sheet volatility, which was made possible by our strong liquidity position.

We have one privately issued CMO in our portfolio backed by mortgages having sub-prime or Alt-A features, which represents less than 0.1% of our total investment portfolio at both March 31, 2017 and December 31, 2016.

The table below summarizes our investment in obligations of state and political subdivisions at March 31, 2017 and December 31, 2016.

		March 31, 2017						December 31, 2016
(dollars in thousands)		Amortized Cost		Fair Value		% of Total State and Political Subdivisions		Amortized Cost		Fair Value		% of Total State and Political Subdivisions
Within California:
	General obligation bonds	$	15,699	$	15,679	14.7	%	$	15,777	$	15,660	14.3	%
	Revenue bonds	10,848		11,090		10.1		10,895		11,127		9.9
	Tax allocation bonds	4,022		4,145		3.8		4,043		4,178		3.7
Total within California		30,569		30,914		28.6		30,715		30,965		27.9
Outside California:
	General obligation bonds	68,220		67,454		64.0		71,534		70,376		64.9
	Revenue bonds	7,857		7,882		7.4		7,913		7,904		7.2
Total outside California		76,077		75,336		71.4		79,447		78,280		72.1
Total obligations of state and political subdivisions		$	106,646	$	106,250	100.0	%	$	110,162	$	109,245	100.0	%

The portion of the portfolio outside the state of California is distributed among twenty states. The largest concentrations outside California are in Washington (12.2%), Texas (11.7%), and Minnesota (11.5%). Revenue bonds, both within

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and outside California, primarily consist of bonds relating to essential services (such as public improvements and utilities) and school district bonds.

Investments in states, municipalities and political subdivisions are subject to an initial pre-purchase credit assessment and ongoing monitoring. Key considerations include:

• The soundness of a municipality’s budgetary position and stability of its tax revenues

• Debt profile and level of unfunded liabilities, diversity of revenue sources, taxing authority of the issuer

• Local demographics/economics including unemployment data, largest taxpayers and local employers, income indices and home values

• For revenue bonds, the source and strength of revenue for municipal authorities including the obligor’s financial condition and reserve levels, annual debt service and debt coverage ratio, and credit enhancement (such as insurer’s strength)

• Credit ratings by major credit rating agencies

Loans

Loans totaled $1,477.6 million at March 31, 2017, a decrease of $9.0 million from $1,486.6 million at December 31, 2016. New loan originations in the first three months of 2017 of $23.9 million were primarily in commercial real estate, including both owner-occupied and investor-owned, spread throughout our markets, and TIC mortgages. Pay-offs of $32.7 million, combined with scheduled payments and changes to utilization of existing loan commitments, produced the net decrease from December 31, 2016. We believe our loan pipeline is robust, reflecting growth prospects across our markets.

Liabilities

During the first three months of 2017, total liabilities increased by $5.8 million to $1,798.7 million. Deposits increased $6.6 million in the first quarter of 2017, primarily due to normal business activity from existing commercial customers that produced $61.4 million growth in non-interest bearing deposits, partially offset by $46.0 million money market deposits that were placed in one-way sales with our third party deposit network as part of our cash management strategy. Non-interest bearing deposits totaled $878.4 million, or 49.4% of total deposits at March 31, 2017, compared to 46.1% at December 31, 2016.

Capital Adequacy

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

Management reviews capital ratios on a regular basis to ensure that capital exceeds the prescribed regulatory minimums and is adequate to meet our anticipated future needs.  For all periods presented, the Bank’s ratios exceed the regulatory definition of “well capitalized” under the regulatory framework for prompt corrective action and Bancorp’s ratios exceed the required minimum ratios to be considered a well-capitalized bank holding company. The most recent notification from the FDIC categorized the Bank as well capitalized under the regulatory framework for prompt corrective action as of December 31, 2016. There are no conditions or events since that notification that Management believes have changed the Bank’s categories and we expect the Bank to remain well capitalized for prompt corrective action purposes.

In July 2013, the Federal Reserve Board of Governors, the FDIC and the Office of the Comptroller of the Currency finalized regulatory capital rules known as "Basel III". The rules became effective beginning January 2015, and will be phased-in by January 2019. The guidelines, among other things, changed the minimum capital requirements of banks and bank holding companies by increasing the Tier 1 capital to risk-weighted assets ratio to 6%, and introduced a new requirement to maintain a minimum ratio of common equity Tier 1 capital to risk-weighted assets of 4.5%. By 2019, when fully phased in, the rules will require further increases to certain minimum capital requirements and a capital conservation buffer of an additional 2.5% of risk-weighted assets. Basel III permits certain banks such as us

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to exclude accumulated other comprehensive income or loss from regulatory capital through a one-time election in the first quarter of 2015. As it was consistent with our existing treatment, there were no changes to our capital ratios as a result of making this election. The Basel III changes that affected us most significantly include:

• shifting off-balance sheet items with an original maturity of one year or less from 0% to 20% risk weight,

• moving past due loan balances from 100% to 150% risk weight,

• deducting deferred tax assets associated with NOLs and tax credits from common equity Tier 1 capital, and

• subjecting deferred tax assets related to temporary timing differences that exceed certain thresholds to 250% risk-weighting, beginning in 2018.

We have modeled our ratios under the fully phased-in Basel III rules, and based on present facts, we do not expect that we will be required to raise additional capital as a result of the fully phased-in rules.

The Bancorp’s and Bank’s capital adequacy ratios as of March 31, 2017 and December 31, 2016 are presented in the following tables. Bancorp's Tier 1 capital includes the subordinated debentures, which are not included at the Bank level. We continued to build capital in 2017 through the accumulation of net income.

Capital Ratios for Bancorp (dollars in thousands)	Actual Ratio				Adequately Capitalized Threshold1				Ratio to be a Well Capitalized Bank Holding Company
March 31, 2017	Amount		Ratio		Amount		Ratio		Amount		Ratio
Total Capital (to risk-weighted assets)	$	250,632	14.68	%	≥ $	157,966	≥ 9.250	%	≥ $	170,774	≥ 10.00	%
Tier 1 Capital (to risk-weighted assets)	$	234,349	13.72	%	≥ $	123,811	≥ 7.250	%	≥ $	136,619	≥ 8.00	%
Tier 1 Capital (to average assets)	$	234,349	11.59	%	≥ $	80,892	≥ 4.000	%	≥ $	101,115	≥ 5.00	%
Common Equity Tier 1 (to risk-weighted assets)	$	228,915	13.40	%	≥ $	98,195	≥ 5.750	%	≥ $	111,003	≥ 6.50	%
December 31, 2016
Total Capital (to risk-weighted assets)	$	247,453	14.32	%	≥ $	149,039	≥ 8.625	%	≥ $	172,799	≥ 10.00	%
Tier 1 Capital (to risk-weighted assets)	$	231,111	13.37	%	≥ $	114,479	≥ 6.625	%	≥ $	138,239	≥ 8.00	%
Tier 1 Capital (to average assets)	$	231,111	11.39	%	≥ $	81,189	≥ 4.000	%	≥ $	101,486	≥ 5.00	%
Common Equity Tier 1 (to risk-weighted assets)	$	225,925	13.07	%	≥ $	88,559	≥ 5.125	%	≥ $	112,319	≥ 6.50	%

¹ The adequately capitalized threshold includes the capital conservation buffer that was effective January 1, 2016. These ratios are not reflected on a fully phased-in basis, which will occur in January 2019.

Capital Ratios for the Bank (dollars in thousands)	Actual Ratio				Adequately Capitalized Threshold1				Ratio to be Well Capitalized under Prompt Corrective Action Provisions
March 31, 2017	Amount		Ratio		Amount		Ratio		Amount		Ratio
Total Capital (to risk-weighted assets)	$	244,514	14.32	%	≥ $	157,938	≥ 9.250	%	≥ $	170,744	≥ 10.00	%
Tier 1 Capital (to risk-weighted assets)	$	228,230	13.37	%	≥ $	123,789	≥ 7.250	%	≥ $	136,595	≥ 8.00	%
Tier 1 Capital (to average assets)	$	228,230	11.29	%	≥ $	80,880	≥ 4.000	%	≥ $	101,099	≥ 5.00	%
Common Equity Tier 1 (to risk-weighted assets)	$	228,230	13.37	%	≥ $	98,178	≥ 5.750	%	≥ $	110,983	≥ 6.50	%
December 31, 2016
Total Capital (to risk-weighted assets)	$	243,468	14.09	%	≥ $	149,016	≥ 8.625	%	≥ $	172,772	≥ 10.00	%
Tier 1 Capital (to risk-weighted assets)	$	227,127	13.15	%	≥ $	114,462	≥ 6.625	%	≥ $	138,218	≥ 8.00	%
Tier 1 Capital (to average assets)	$	227,127	11.19	%	≥ $	81,176	≥ 4.000	%	≥ $	101,469	≥ 5.00	%
Common Equity Tier 1 (to risk-weighted assets)	$	227,127	13.15	%	≥ $	88,546	≥ 5.125	%	≥ $	112,302	≥ 6.50	%

¹ The adequately capitalized threshold includes the capital conservation buffer that was effective January 1, 2016. These ratios are not reflected on a fully phased-in basis, which will occur in January 2019.

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Liquidity

The goal of liquidity management is to provide adequate funds to meet loan demand and to fund operating activities and deposit withdrawals. We accomplish this goal by maintaining an appropriate level of liquid assets and formal lines of credit with the FHLB, FRBSF and correspondent banks that enable us to borrow funds as discussed in Note 6 to the consolidated financial statements. Our Asset Liability Management Committee ("ALCO"), which is comprised of certain Bank directors, is responsible for approving and monitoring our liquidity targets and strategies. ALCO has adopted a contingency funding plan that provides early detection of potential liquidity issues in the market or the Bank and institutes prompt responses that may prevent or alleviate a potential liquidity crisis. Management monitors liquidity daily and regularly adjusts our position based on current and future liquidity needs. We also have relationships with third party deposit networks and can adjust the placement of our deposits via reciprocal or one-way sales, as part of our cash management strategy.

We obtain funds from the repayment and maturity of loans,deposit inflows, investment security maturities and paydowns, federal funds purchases, FHLB advances, other borrowings, and cash flow from operations.  Our primary uses of funds are the origination of loans, the purchase of investment securities, withdrawals of deposits, maturity of certificates of deposit, repayment of borrowings and dividends to common stockholders.

The most significant factor in our daily liquidity position has been the level of customer deposits. We attract and retain new deposits, which depends upon the variety and effectiveness of our customer account products, service and convenience, and rates paid to customers, as well as our financial strength. The cash cycles of some of our large commercial depositors may cause short-term fluctuations in their deposit balances held with us.

At March 31, 2017 our liquid assets, which included unencumbered available-for-sale securities and cash, totaled $270.0 million, a decrease of $44.8 million from December 31, 2016. The decline is primarily due to a $129.0 million transfer of securities from available-for-sale to held-to-maturity, a portion of which was used to replace the previously pledged available-for-sale securities. Additionally, our cash and cash equivalents increased $24.4 million from December 31, 2016. The primary sources of funds during the first three months of 2017 included $12.6 million in pay-downs and maturities of investment securities, $8.9 million in loan principal collected, $7.0 million net cash provided by operating activities and an increase in net deposits of $6.6 million. The primary uses of liquidity during the first three months of 2017 was $8.6 million in investment securities purchases and $1.7 million in cash dividends paid on common stock to our shareholders. Management anticipates that our current strong liquidity position and core deposit base will provide adequate liquidity to fund our operations.

Undrawn credit commitments, as discussed in Note 8 to the consolidated financial statements, totaled $415.8 million at March 31, 2017. These commitments, to the extent used, are expected to be funded primarily through the repayment of existing loans, deposit growth and liquid assets. Over the next twelve months, $97.7 million of time deposits will mature. We expect these funds to be replaced with new deposits. Our emphasis on local deposits combined with our well capitalized equity position, provides a very stable funding base.

Since Bancorp is a holding company and does not conduct regular banking operations, its primary sources of liquidity are dividends from the Bank. Under the California Financial Code, payment of a dividend from the Bank to Bancorp without advance regulatory approval is restricted to the lesser of the Bank’s retained earnings or the amount of the Bank’s net profits from the previous three fiscal years less the amount of dividends paid during that period. The primary uses of funds for Bancorp are shareholder dividends and ordinary operating expenses.  Bancorp held $5.8 million of cash at March 31, 2017, which is deemed sufficient to cover Bancorp's operational needs and cash dividends to shareholders through the end of 2017. Management anticipates that there will be sufficient earnings at the Bank to provide dividends to Bancorp to meet its funding requirements for the foreseeable future.

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ITEM 3.     Quantitative and Qualitative Disclosure about MarketRisk

Market risk is defined as the risk of loss arising from an adverse change in the market value (or prices) of financial instruments. A significant form of market risk is interest rate risk, which is inherent in our investment, borrowing, lending and deposit gathering activities. The Bank manages interest rate sensitivity to minimize the exposure of our net interest margin, earnings, and capital to changes in interest rates. Interest rate changes can create fluctuations in the net interest margin due to an imbalance in the timing of repricing or maturity of assets or liabilities.

To mitigate interest rate risk, the structure of the Consolidated Statement of Condition is managed with the objective of correlating the effects of interest rate changes on loans and investments with those of deposits and borrowings. The asset liability management policy sets limits on the acceptable amount of change to net interest income and economic value of equity in different interest rate environments.

From time to time, we enter into interest rate swap contracts to mitigate the changes in the fair value of specified long-term fixed-rate loans and firm commitments to enter into long-term fixed-rate loans caused by changes in interest rates. See Note 9 to the Consolidated Financial Statements in this Form 10-Q.

Exposure to interest rate risk is reviewed at least quarterly by ALCO and the Board of Directors. Simulation models are used to measure interest rate risk and to evaluate strategies to improve profitability. A simplified statement of condition is prepared on a quarterly basis as a starting point, using instrument level data of our actual loans, investments, borrowings and deposits as inputs. If potential changes to net equity value and net interest income resulting from hypothetical interest rate changes are not within the limits established by the Board of Directors, Management may adjust the asset and liability mix to bring the risk position within approved limits.

The Bank currently has low interest rate risk and, in general, is slightly asset sensitive (net interest margin is expected to increase if rates go up due to our adjustable rate loans and our significant non-interest bearing deposit base). Our net interest income is most vulnerable to a falling interest rate environment.

Based on our most recent simulation, net interest income is projected to increase by approximately 0.1% in year one given an immediate 200 basis point increase in interest rates and increase by approximately 5.9% in year two. On the other hand, net interest income is projected to decrease by 5.7% in year one given an immediate 100 basis point decline in interest rates and decrease by 10.6% in year two. The interest rate risk is within policy guidelines established by ALCO and the Board of Directors.

Interest rate sensitivity is a function of the repricing characteristics of our assets and liabilities. The Bank runs a combination of scenarios and sensitivities in its attempt to capture the range of interest rate risk. As with any simulation model or other method of measuring interest rate risk, limitations are inherent in the process and dependent on assumptions. For example, if we choose to pay interest on certain business deposits that are currently non-interest bearing, causing these deposits to become rate sensitive in the future, we would become less asset sensitive than the model currently indicates. Assets and liabilities may react differently to changes in market interest rates in terms of both timing and responsiveness to market rate movements. Further, the actual rates and timing of prepayments on loans and investment securities, and the behavior of depositors, could vary significantly from the assumptions applied in the various scenarios. Lastly, changes in U.S. Treasury rates accompanied by a change in the shape of the yield curve could produce different results from those presented in the table. Accordingly, the results presented should not be relied upon as indicative of actual results in the event of changing market interest rates.

ITEM 4.       Controlsand Procedures

Bank of Marin Bancorp and its subsidiary (the "Company") conducted an evaluation under the supervision and with the participation of our Management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15(e) or 15d-15(e) under the Exchange Act of 1934 (the “Act”)) as of the end of the period covered by this report. The term disclosure controls and procedures means controls and other procedures that are designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Act (15 U.S.C. 78a etseq.) is recorded, processed, summarized and reported, within the time periods specified in the Commission's rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Act is accumulated and communicated to our Management, including our principal executive and principal financial officers, or persons performing similar

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functions, as appropriate to allow timely decisions regarding required disclosure. Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this report.

During the last fiscal quarter there were no significant changes that materially affected, or are reasonably likely to affect, our internal control over financial reporting.

PART II       OTHER INFORMATION

ITEM 1         Legal Proceedings

Refer to Note 12 to the Consolidated Financial Statements in Item 8 of our 2016 Form 10-K and Note 8 to the Consolidated Financial Statements in this Form 10-Q.

ITEM 1A      Risk Factors

There have been no material changes from the risk factors previously disclosed in our 2016 Form 10-K. Refer to “Risk Factors” in Item 1A of our 2016 Form 10-K, pages 11 through 20.

ITEM 2       Unregistered Sales of Equity Securities and Use ofProceeds

We did not have any unregistered sales or repurchases of our equity securities during the three months ended March 31, 2017.

ITEM 3       Defaults Upon Senior Securities

None.

ITEM 4      Mine Safety Disclosures

Not applicable.

ITEM 5      Other Information

None.

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ITEM 6       Exhibits

The following exhibits are filed as part of this report or hereby incorporated by references to filings previously made with the SEC.

		Incorporated by Reference
Exhibit Number	Exhibit Description	Form	File No.	Exhibit	Filing Date	Herewith
3.01	Articles of Incorporation, as amended	10-Q	001-33572	3.01	November 7, 2007
3.02	Bylaws	10-Q	001-33572	3.02	May 9, 2011
3.02a	Bylaw Amendment	8-K	001-33572	3.03	July 6, 2015
4.01	Rights Agreement dated as of July 2, 2007	8-A12B	001-33572	4.1	July 2, 2007
4.01a	Rights Agreement, Amendment No. 1, dated June 17, 2016	8-K	001-33572	4.2	June 22, 2016
10.01	2007 Employee Stock Purchase Plan	S-8	333-144810	4.1	July 24, 2007
10.03	1999 Stock Option Plan	S-8	333-144808	4.1	July 24, 2007
10.04	2007 Equity Plan	S-8	333-144809	4.1	July 24, 2007
10.05	2010 Director Stock Plan	S-8	333-167639	4.1	June 21, 2010
10.06	Form of Indemnification Agreement for Directors and Executive Officers dated August 9, 2007	10-Q	001-33572	10.06	November 7, 2007
10.07	Form of Employment Agreement dated January 23, 2009	8-K	001-33572	10.1	January 26, 2009
10.09	2010 Annual Individual Incentive Compensation Plan	8-K	001-33572	99.1	October 21, 2010
10.10a	Salary Continuation Agreements with executive officers, Russell Colombo, Chief Executive Officer and Peter Pelham, Director of Retail Banking, dated January 1, 2011	8-K	001-33572	10.1 10.4	January 6, 2011
10.10b	Salary Continuation Agreements with executive officers, Tani Girton, Chief Financial Officer, dated October 18, 2013 and Elizabeth Reizman, Chief Credit Officer, dated July 20, 2014	8-K	001-33572	10.2 10.3	November 4, 2014
10.10c	Salary Continuation Agreement for executive officer Timothy Myers, Executive Vice President and Commercial Banking Manager, dated May 28, 2015	8-K	001-33572	10.4	June 2, 2015
10.11	2007 Form of Change in Control Agreement	8-K	001-33572	10.1	October 31, 2007
10.12	Information Technology Services Agreement with Fidelity Information Services, LLC, dated July 11, 2012	8-K	001-33572	10.1	July 17, 2012
11.01	Earnings Per Share Computation - included in Note 1 to the Consolidated Financial Statements					Filed
31.01	Certification of Principal Executive Officer pursuant to Rule 13a-14(a)/15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002					Filed
31.02	Certification of Principal Financial Officer pursuant to Rule 13a-14(a)/15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002					Filed
32.01	Certification pursuant to 18 U.S.C. §1350 as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002					Filed
101.01*	XBRL Interactive Data File					Furnished

* As provided in Rule 406T of Regulation S-T, this information is furnished and not filed for purposes of Sections 11 and 12 of the Securities Act of 1933 and Section 18 of the Securities Exchange Act of 1934.

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 thereunto duly authorized.

	Bank of Marin Bancorp
	(registrant)
May 8, 2017	/s/ Russell A. Colombo
Date	Russell A. Colombo
	President &
	Chief Executive Officer
	(Principal Executive Officer)
May 8, 2017	/s/ Tani Girton
Date	Tani Girton
	Executive Vice President &
	Chief Financial Officer
	(Principal Financial Officer)
May 8, 2017	/s/ Cecilia Situ
Date	Cecilia Situ
	First Vice President &
	Manager of Finance & Treasury
	(Principal Accounting Officer)

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EX-31.01

EXHIBIT 31.01

Certification of Principal Executive Officer pursuant to Rule 13a-14(a)/15d-14(a) as adopted pursuant to §302 of the Sarbanes-Oxley Act of 2002

I, Russell A. Colombo, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Bank of Marin Bancorp (the Registrant);

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 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 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 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 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 information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant's internal controls over financial reporting.

May 8, 2017	/s/ Russell A. Colombo
Date	Russell A. Colombo
	President &
	Chief Executive Officer

EX-31.02

EXHIBIT 31.02

Certification of Principal Financial Officer pursuant to Rule 13a-14(a)/15d-14(a)as adopted pursuant to §302 of the Sarbanes-Oxley Act of 2002

I, Tani Girton, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Bank of Marin Bancorp (the Registrant);

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 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 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 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 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 information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Registrant's internal controls over financial reporting.

May 8, 2017	/s/ Tani Girton
Date	Tani Girton
	Chief Financial Officer

EX-32.01

EXHIBIT 32.01

Certification pursuant to 18 U.S.C. §1350 as adopted pursuant to §906

of the Sarbanes-Oxley Act of 2002

In connection with the quarterly report on Form 10-Q of Bank of Marin Bancorp (the Registrant) for the quarter ended March 31, 2017, as filed with the Securities and Exchange Commission, the undersigned hereby certify pursuant to 18 U.S.C. §1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, that:

1) such Form 10-Q 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 such Form 10-Q fairly presents, in all material

respects, the financial condition and results of operations of the Registrant.

May 8, 2017	/s/ Russell A. Colombo
Date	Russell A. Colombo
	President &
	Chief Executive Officer

May 8, 2017	/s/ Tani Girton
Date	Tani Girton
	Executive Vice President &
	Chief Financial Officer

This certification accompanies each report pursuant to §906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, be deemed filed by the Registrant for purposes of §18 of the Securities Exchange Act of 1934, as amended.

XML

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2017	Apr. 30, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	Bank of Marin Bancorp
Entity Central Index Key	0001403475
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		6,149,006

XML

CONSOLIDATED STATEMENTS OF CONDITION - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 73,162	$ 48,804
Investment securities
Held-to-maturity, at amortized cost	172,272	44,438
Available-for-sale, at fair value	241,684	372,580
Total investment securities	413,956	417,018
Loans, net of allowance for loan losses of $15,219 and $15,442 at March 31, 2017 and December 31, 2016, respectively	1,462,351	1,471,174
Bank premises and equipment, net	8,336	8,520
Goodwill	6,436	6,436
Core deposit intangible	2,462	2,580
Interest receivable and other assets	67,005	68,961
Total assets	2,033,708	2,023,493
Deposits
Non-interest bearing	878,416	817,031
Interest bearing
Transaction accounts	100,628	100,723
Savings accounts	159,889	163,516
Money market accounts	494,324	539,967
Time accounts	146,012	151,463
Total deposits	1,779,269	1,772,700
Subordinated debentures	5,628	5,586
Interest payable and other liabilities	13,825	14,644
Total liabilities	1,798,722	1,792,930
Stockholders' Equity
Preferred stock, no par value, Authorized - 5,000,000 shares, none issued	0	0
Common stock, no par value, Authorized - 15,000,000 shares; Issued and outstanding - 6,148,486 and 6,127,314 at March 31, 2017 and December 31, 2016, respectively	87,911	87,392
Retained earnings	149,357	146,464
Accumulated other comprehensive loss, net	(2,282)	(3,293)
Total stockholders' equity	234,986	230,563
Total liabilities and stockholders' equity	$ 2,033,708	$ 2,023,493

XML

CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Loans and Leases Receivable, Net Amount
Loans, allowance for loan losses	$ 15,219	$ 15,442
Stockholders' Equity
Preferred stock, no par value (in dollars per share)	$ 0	$ 0
Preferred stock, authorized (in shares)	5,000,000	5,000,000
Preferred stock, issued (in shares)	0	0
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, authorized (in shares)	15,000,000	15,000,000
Common stock, issued (in shares)	6,148,486	6,148,486
Common stock, outstanding (in shares)	6,127,314	6,127,314

XML

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Interest income
Interest and fees on loans	$ 15,849	$ 17,141
Interest on investment securities
Securities of U.S. government agencies	1,518	1,352
Obligations of state and political subdivisions	568	586
Corporate debt securities and other	37	105
Interest on Federal funds sold and short-term investments	60	11
Total interest income	18,032	19,195
Interest expense
Interest on interest-bearing transaction accounts	29	27
Interest on savings accounts	15	14
Interest on money market accounts	113	111
Interest on time accounts	146	196
Interest on Federal Home Loan Bank (FHLB) and other borrowings	0	100
Interest on subordinated debentures	108	109
Total interest expense	411	557
Net interest income	17,621	18,638
Provision for loan losses	0	0
Net interest income after provision for loan losses	17,621	18,638
Non-interest income
Service charges on deposit accounts	452	456
Wealth Management and Trust Services	503	566
Debit card interchange fees	372	338
Merchant interchange fees	96	113
Earnings on bank-owned life insurance	209	201
Dividends on FHLB stock	232	169
Gains on investment securities, net	0	110
Other income	251	210
Total non-interest income	2,115	2,163
Non-interest expense
Salaries and related benefits	7,475	6,748
Occupancy and equipment	1,319	1,281
Depreciation and amortization	481	453
Federal Deposit Insurance Corporation insurance	161	261
Data processing	939	856
Professional services	522	498
Directors' expense	158	189
Information technology	198	193
Provision for losses on off-balance sheet commitments	165	0
Other expense	1,593	1,531
Total non-interest expense	13,011	12,010
Income before provision for income taxes	6,725	8,791
Provision for income taxes	2,177	3,145
Net income	$ 4,548	$ 5,646
Net income per common share:
Basic (usd per share)	$ 0.75	$ 0.93
Diluted (usd per share)	$ 0.74	$ 0.93
Weighted average shares:
Basic (shares)	6,092	6,048
Diluted (shares)	6,172	6,090
Dividends declared per common share	$ 0.27	$ 0.25
Comprehensive income:
Net income	$ 4,548	$ 5,646
Other comprehensive income
Change in net unrealized gain or loss on available-for-sale securities	1,674	2,923
Amortization of net unrealized loss on available for sale securities transferred to held-to-maturity securities	41	0
Reclassification adjustment for gains on available-for-sale securities included in net income	0	(110)
Net change in unrealized loss on available-for-sale securities, before tax	1,715	2,813
Tax effect	704	1,174
Other comprehensive income, net of tax	1,011	1,639
Comprehensive income	$ 5,559	$ 7,285

XML

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss), Net of Taxes
Balance (in shares) at Dec. 31, 2015		6,068,543
Balance at Dec. 31, 2015	$ 214,473	$ 84,727	$ 129,553	$ 193
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	23,134		23,134
Other comprehensive income (loss)	(3,486)			(3,486)
Stock options exercised (in shares)		36,117
Stock options exercised	1,227	$ 1,227
Excess tax benefit - stock-based compensation	161	$ 161
Stock issued under employee stock purchase plan (in shares)		621
Stock issued under employee stock purchase plan	32	$ 32
Restricted stock granted (in shares)		16,910
Restricted stock granted	0	$ 0
Stock-based compensation - stock options	347	347
Stock-based compensation - restricted stock	638	$ 638
Cash dividends paid on common stock	(6,223)		(6,223)
Stock purchased by directors under director stock plan (in shares)		516
Stock purchased by directors under director stock plan	26	$ 26
Stock issued in payment of director fees (in shares)		4,607
Stock issued in payment of director fees	$ 234	$ 234
Balance (in shares) at Dec. 31, 2016	6,127,314	6,127,314
Balance at Dec. 31, 2016	$ 230,563	$ 87,392	146,464	(3,293)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,548		4,548
Other comprehensive income (loss)	$ 1,011			1,011
Stock options exercised, net of shares surrendered for cashless exercises and tax withholdings (in shares)	5,285
Stock options exercised, net of shares surrendered for cashless exercises and tax withholdings	$ 28
Stock issued under employee stock purchase plan (in shares)		154
Stock issued under employee stock purchase plan	9	$ 9
Restricted stock granted (in shares)		14,230
Restricted stock granted	0	$ 0
Stock-based compensation - stock options	174	174
Stock-based compensation - restricted stock	204	$ 204
Cash dividends paid on common stock	(1,655)		(1,655)
Stock purchased by directors under director stock plan (in shares)		315
Stock purchased by directors under director stock plan	22	$ 22
Stock issued in payment of director fees (in shares)		1,188
Stock issued in payment of director fees	$ 82	$ 82
Balance (in shares) at Mar. 31, 2017	6,127,314	6,148,486
Balance at Mar. 31, 2017	$ 234,986	$ 87,911	$ 149,357	$ (2,282)

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Cash Flows from Operating Activities:
Net income	$ 4,548	$ 5,646	$ 23,134
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for losses on off-balance sheet commitments	165	0
Compensation expense via common stock for director fees	73	71
Stock-based compensation expense	378	214
Amortization of core deposit intangible	118	133
Amortization of investment security premiums, net of accretion of discounts	762	742
Accretion of discount on acquired loans	(240)	(428)
Accretion of discount on subordinated debentures	42	50
Net amortization of deferred loan origination costs/fees	75	75
Gain on sale of investment securities	0	(110)
Depreciation and amortization	481	453
Gain on sale of repossessed assets	(1)	0
Earnings on bank-owned life insurance policies	(209)	(201)
Net change in operating assets and liabilities:
Deferred rent and other rent-related expenses	145	(51)
Interest receivable and other assets	1,305	2,072
Interest payable and other liabilities	(674)	(1,068)
Total adjustments	2,420	1,952
Net cash provided by operating activities	6,968	7,598
Cash Flows from Investing Activities:
Purchase of held-to-maturity securities	(2,991)	0
Purchase of available-for-sale securities	(5,590)	(3,636)
Proceeds from sale of available-for-sale securities	0	54,985
Proceeds from paydowns/maturity of held-to-maturity securities	4,001	6,237
Proceeds from paydowns/maturity of available-for-sale securities	8,594	32,548
Loans originated and principal collected, net	8,875	10,821
Purchase of premises and equipment	(297)	(57)
Proceeds from sale of repossessed assets	170	0
Cash paid for low income housing tax credit investment	(345)	(76)
Net cash provided by investing activities	12,417	100,822
Cash Flows from Financing Activities:
Net increase (decrease) in deposits	6,569	(46,880)
Proceeds from stock options exercised	88	1,035
Proceeds from stock issued under employee and director stock purchase plans	(60)	0
Proceeds from stock issued under employee and director stock purchase plans	31	20
Repayment of borrowings	0	(47,650)
Cash dividends paid on common stock	(1,655)	(1,518)
Net cash provided by (used in) financing activities	4,973	(94,993)
Net increase in cash and cash equivalents	24,358	13,427
Cash and cash equivalents at beginning of period	48,804	26,343	26,343
Cash and cash equivalents at end of period	73,162	39,770	$ 48,804
Supplemental disclosure of cash flow information:
Cash paid for interest	373	498
Cash paid for income taxes	0	505
Supplemental disclosure of non-cash investing and financing activities:
Change in net unrealized gain or loss on available-for-sale securities	1,674	2,813
Securities transferred from available-for-sale to held-to-maturity	128,965	0
Amortization of net unrealized loss on available-for sale securities transferred to held-to-maturity	41	0
Stock issued in payment of director fees	$ 82	$ 137

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Basis of Presentation

3 Months Ended

Mar. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

 Basis of Presentation

The consolidated financial statements include the accounts of Bank of Marin Bancorp (“Bancorp”), a bank holding company, and its wholly-owned bank subsidiary, Bank of Marin (the “Bank”), a California state-chartered commercial bank. References to “we,” “our,” “us” mean the holding company and the Bank that are consolidated for financial reporting purposes. The accompanying unaudited consolidated interim financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC"). Certain information and note disclosures normally included in annual financial statements prepared in accordance with generally accepted accounting principles ("GAAP") have been condensed or omitted pursuant to those rules and regulations. Although we believe that the disclosures are adequate and the information presented is not misleading, we suggest that these interim financial statements be read in conjunction with the annual financial statements and the notes thereto included in our 2016 Annual Report on Form 10-K.  In the opinion of Management, the unaudited consolidated financial statements reflect all adjustments which are necessary for a fair presentation of the consolidated financial position, the results of operations, changes in comprehensive income, changes in stockholders’ equity, and cash flows for the periods presented. All material intercompany transactions have been eliminated. The results of these interim periods may not be indicative of the results for the full year or for any other period. We have evaluated subsequent events through the date of filing with the SEC and have determined that there are no subsequent events that require additional recognition or disclosure.

The NorCal Community Bancorp Trusts I and II, respectively (the "Trusts") were formed for the sole purpose of issuing trust preferred securities. Bancorp is not considered the primary beneficiary of the Trusts (variable interest entities), therefore the Trusts are not consolidated in our consolidated financial statements, but rather the subordinated debentures are shown as a liability on our consolidated statements of condition (See Note 6, Borrowings). Bancorp's investment in the securities of the Trusts is accounted for under the equity method and is included in interest receivable and other assets on the consolidated statements of condition.

The following table shows: 1) weighted average basic shares, 2) potentially dilutive weighted average common shares related to stock options and unvested restricted stock awards, and 3) weighted average diluted shares. Basic earnings per share (“EPS”) are calculated by dividing net income by the weighted average number of common shares outstanding during each period, excluding unvested restricted stock awards. Diluted EPS are calculated using the weighted average number of potentially dilutive common shares. The number of potentially dilutive common shares included in the quarterly diluted EPS is computed using the average market prices during the three months included in the reporting period under the treasury stock method. The number of potentially dilutive common shares included in year-to-date diluted EPS is a year-to-date weighted average of potentially dilutive common shares included in each quarterly diluted EPS computation. We have two forms of outstanding common stock: common stock and unvested restricted stock awards. Holders of unvested restricted stock awards receive non-forfeitable dividends at the same rate as common shareholders and they both share equally in undistributed earnings. Under the two-class method, the difference in EPS is not significant for these participating securities.

	Three months ended
(in thousands, except per share data)	March 31, 2017		March 31, 2016
Weighted average basic shares outstanding	6,092		6,048
Potentially dilutive common shares related to:
Stock options	62		35
Unvested restricted stock awards	18		7
Weighted average diluted shares outstanding	6,172		6,090
Net income	$	4,548	$	5,646
Basic EPS	$	0.75	$	0.93
Diluted EPS	$	0.74	$	0.93
Weighted average anti-dilutive shares not included in the calculation of diluted EPS	13		48

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Recently Issued Accounting Standards

3 Months Ended

Mar. 31, 2017

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Recently Issued Accounting Standards

Recently Adopted and Issued Accounting Standards

In March 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2016-05, Derivatives and Hedging (Topic 815): Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships. A contract novation refers to replacing one of the parties to a derivative instrument with a new party. This ASU clarifies that a change in counterparty in a derivative instrument does not, in and of itself, require dedesignation of that hedging relationship and therefore discontinue the application of hedge accounting. We adopted the amendments prospectively effective January 1, 2017, which did not have a material impact on our financial condition or results of operations as there were no changes in counterparties.

In March 2016, the FASB issued ASU No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting ("ASU 2016-09"). This ASU identifies areas for simplification involving several aspects of accounting for share-based payment transactions, including the income tax consequences, classification of awards as equity or liabilities, forfeiture accounting, and classifications on the statement of cash flows. We adopted the requirements of this ASU effective January 1, 2017, which impacted the following areas:

Forfeiture rates: We have elected to account for forfeitures as they occur. Previously, we accounted for forfeitures based on an estimate of the number of awards expected to vest. The policy change was applied using a modified retrospective approach and did not have a material effect on our financial condition or results of operations.

Income taxes: We have recorded excess tax benefits (deficiencies) resulting from the exercise of non-qualified stock options, the disqualifying disposition of incentive stock options and vesting of restricted stock awards as tax benefits (expense) in the consolidated statements of comprehensive income with a corresponding decrease (increase) to current taxes payable. Previous to the adoption of this ASU, excess tax benefits (deficiencies) were recognized as an increase to common stock in the consolidated statements of changes in stockholders' equity. In addition, we have reflected excess tax benefits as an operating activity in the consolidated statements of cash flows. Previous to the adoption of this ASU, excess tax benefits were shown as a financing activity. We applied the amendment prospectively and prior period financial statements have not been restated. For the three months ended March 31, 2017, we recognized $133 thousand in excess tax benefits recorded as a reduction to income tax expense.

Statutory tax withholding: Cash paid for tax withholdings when shares are surrendered in a cashless stock option exchange has been classified as a financing activity in the consolidated statements of cash flows. There were no shares surrendered for tax withholdings prior to the adoption of ASU 2016-09.

In March 2017, the FASB issued ASU No. 2017-08, Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities. The amendments in this ASU shorten the amortization period for certain callable debt securities purchased at a premium and requires the premium to be amortized to the earliest call date. The ASU is effective for annual periods beginning after December 15, 2018, including interim periods within those periods. We early adopted this ASU effective January 1, 2017, which did not have a material impact on our financial condition and results of operations.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). This ASU is a converged standard involving FASB and International Financial Reporting Standards that provides a single comprehensive revenue recognition model for all contracts with customers across transactions and industries. The core principal of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount and at a time that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Subsequent updates related to Revenue from Contracts with Customers (Topic 606) are as follows:

• August 2015 ASU No. 2015-14 - Deferral of the Effective Date, institutes a one-year deferral of the effective date of this amendment to annual reporting periods beginning after December 15, 2017. Early application is permitted only as of annual periods beginning after December 15, 2016, including interim reporting periods within that reporting period.

• March 2016 ASU No. 2016-08 - Principal versus Agent Considerations (Reporting Revenue Gross versus Net), clarifies the implementation guidance on principal versus agent considerations and on the use of indicators that assist an entity in determining whether it controls a specified good or service before it is transferred to the customer.

• April 2016 ASU No. 2016-10 - Identifying Performance Obligations and Licensing, provides guidance in determining performance obligations in a contract with a customer and clarifies whether a promise to grant a license provides a right to access or the right to use intellectual property.

• May 2016 ASU No. 2016-12 - Narrow Scope Improvements and Practical Expedients, gives further guidance on assessing collectability, presentation of sales taxes, noncash consideration, and completed contracts and contract modifications at transition.

• December 2016 ASU No. 2016-20 - Technical Corrections and Improvements to Topic 606, further clarifies specific aspects of previously issued guidance or corrects unintended application of the guidance.

Our revenue is mainly comprised of interest income on financial instruments, which is explicitly excluded from the scope of ASU 2014-09. While the recognition of certain revenue arrangements of components of our non-interest income may be affected by the ASU, we do not expect it to have a material impact on our financial condition and results of operations.

In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in this ASU make improvements to accounting standards related to financial instruments, including the following:

• Requires equity investments, except for 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.

• Simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. When impairment exists, an entity is required to measure the investment at fair value.

• Eliminates the requirement to disclose the method(s) and significant assumptions used to estimate the fair value that is currently required to be disclosed for financial instruments measured at amortized cost on the balance sheet.

• Requires public companies to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes.

• Requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (i.e., securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements.

• Clarifies 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.

ASU 2016-01 is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. This ASU may affect our financial statement presentation and related footnotes, but we do not expect it to have a material impact on our financial condition or results of operations.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). The amendments in this ASU intend to increase transparency and comparability among organizations by recognizing an asset, which represents the right to use the asset for the lease term, and a lease liability, which is a lessee's obligation to make lease payments measured on a discounted basis. This ASU generally applies to leasing arrangements exceeding a twelve month term. ASU 2016-02 is effective for annual periods, including interim periods within those annual periods beginning after December 15, 2018 and requires a modified retrospective method of adoption. Early application of the amendments is permitted. We intend to adopt this ASU during the first quarter of 2019, as required, and are currently evaluating accounting solutions. As of March 31, 2017, our undiscounted operating lease obligations that were off-balance sheet totaled $20.4 million (See Note 8, Commitments and Contingencies). Upon adoption of this ASU, the present values of leases currently classified as operating leases will be recognized as lease assets and liabilities on our balance sheet. Additional disclosures of key information about our leasing arrangements will also be required. We do not expect the ASU will have a material impact on our capital ratios or return on average assets when adopted and we are currently evaluating the effect the ASU will have on other components of our financial condition and results of operations.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. Under the new guidance, entities will be required to measure expected credit losses by utilizing forward-looking information to assess an entity's allowance for credit losses. The measurement of expected credit losses will be based on historical experience, current conditions and reasonable and supportable forecasts that affect the collectability of a credit over its remaining life. In addition, the ASU amends the accounting for potential credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Management refined our allowance for loan loss model in 2016 and enhanced our loan-level data collection and methodology for analyzing credit losses in preparation for the new accounting standards. We will continue our evaluation of the provisions of this ASU and will be monitoring developments, additional guidance and the potential outcome the amendments will have on our financial condition and results of operations upon adoption in the first quarter of 2020.

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU provides guidance on how to present and classify eight specific cash flow topics in the statement of cash flows. The ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The amendments should be applied using a retrospective transition method to each period presented, if practical. This ASU may affect our financial statement presentation, but we do not expect it to have a material impact on our financial condition or results of operations.

In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business. The amendments are intended to help companies evaluate whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses and provide a more robust framework to use in determining when a set of assets and activities is a business. The amendments are effective for annual periods after December 31, 2017, including interim periods within those periods. The amendments will be adopted prospectively. We will consider these amendments in our evaluation of the accounting for any future business acquisitions or asset disposals.

In January 2017, the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. This amendment simplifies how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test, which would measure a goodwill impairment loss by comparing the implied fair value of goodwill with the carrying amount of that goodwill. Instead, an entity will perform only Step 1 of its quantitative goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount, and then recognizing an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value. The loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The new guidance does not amend the optional qualitative assessment of goodwill impairment, which Bancorp currently uses. The ASU is effective for fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. We anticipate that this ASU will simplify our evaluation of the impairment of goodwill and do not expect it to have a material impact on our financial condition and results of operations.

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Fair Value of Assets and Liabilities

3 Months Ended

Mar. 31, 2017

Fair Value Disclosures [Abstract]

Fair Value of Assets and Liabilities

Fair Value of Assets and Liabilities

Fair Value Hierarchy and Fair Value Measurement

We group our assets and liabilities that are measured at fair value in three levels within the fair value hierarchy, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are:

Level 1: Valuations are based on unadjusted quoted prices in active markets for identical assets or liabilities.

Level 2: Valuations are based on quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-based valuations for which all significant assumptions are observable or can be corroborated by observable market data.

Level 3: Valuations are based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Values are determined using pricing models and discounted cash flow models and may include significant Management judgment and estimation.

Transfers between levels of the fair value hierarchy are recognized through our monthly and/or quarterly valuation process in the reporting period during which the event or circumstances that caused the transfer occurred.

The following table summarizes our assets and liabilities that were required to be recorded at fair value on a recurring basis.

(in thousands)   Description of Financial Instruments	Carrying Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
March 31, 2017
Securities available-for-sale:
Mortgage-backed securities and collateralized mortgage obligations issued by U.S. government agencies	$	123,121	$	—	$	122,531	$	590
Debentures of government sponsored agencies	35,386		—		35,386		—
Privately-issued collateralized mortgage obligations	305		—		305		—
Obligations of state and political subdivisions	77,843		—		77,843		—
Corporate bonds	5,029		—		5,029		—
Derivative financial assets (interest rate contracts)	70		—		70		—
Derivative financial liabilities (interest rate contracts)	837		—		837		—
December 31, 2016
Securities available-for-sale:
Mortgage-backed securities and collateralized mortgage obligations issued by U.S. government agencies	$	254,041	$	—	$	253,434	$	607
Debentures of government sponsored agencies	35,403		—		35,403		—
Privately-issued collateralized mortgage obligations	419		—		419		—
Obligations of state and political subdivisions	77,701		—		77,701		—
Corporate bonds	5,016		—		5,016		—
Derivative financial assets (interest rate contracts)	55		—		55		—
Derivative financial liabilities (interest rate contracts)	933		—		933		—

Securities available-for-sale are recorded at fair value on a recurring basis. When available, quoted market prices (Level 1) are used to determine the fair value of securities available-for-sale. If quoted market prices are not available, we obtain pricing information from a reputable third-party service provider, who may utilize valuation techniques that use current market-based or independently sourced parameters, such as bid/ask prices, dealer-quoted prices, interest rates, benchmark yield curves, prepayment speeds, probability of default, loss severity and credit spreads (Level 2).   Level 2 securities include obligations of state and political subdivisions, U.S. agencies or government-sponsored agencies' debt securities, mortgage-backed securities, government agency-issued, privately-issued collateralized mortgage obligations, and corporate bonds. As of March 31, 2017 and December 31, 2016, there were no securities that were considered Level 1 securities. As of March 31, 2017, we had one available-for-sale security that was considered a Level 3 security. The security is a U.S. government agency obligation collateralized by a small number of business equipment loans guaranteed by the Small Business Administration ("SBA") program. The security is not actively traded and is owned only by a few investors. The significant unobservable data that is reflected in the fair value measurement include dealer quotes, projected prepayment speeds/average life and credit information, among other things. The unrealized gain or loss on this SBA-guaranteed security increased by $2 thousand in the same period recorded as part of other comprehensive income.

Securities held-to-maturity may be written down to fair value (determined using the same techniques discussed above for securities available-for-sale) as a result of other-than-temporary impairment, and we did not record any write-downs during 2017 or 2016.

On a recurring basis, derivative financial instruments are recorded at fair value, which is based on the income approach using observable Level 2 market inputs, reflecting market expectations of future interest rates as of the measurement date.  Standard valuation techniques are used to calculate the present value of the future expected cash flows assuming an orderly transaction.  Valuation adjustments may be made to reflect both our own credit risk and the counterparties’ credit risk in determining the fair value of the derivatives. Level 2 inputs for the valuations are limited to observable market prices for London Interbank Offered Rate ("LIBOR") and Overnight Index Swap ("OIS") rates (for the very short term), quoted prices for LIBOR futures contracts, observable market prices for LIBOR and OIS swap rates, and one-month and three-month LIBOR basis spreads at commonly quoted intervals.  Mid-market pricing of the inputs is used as a practical expedient in the fair value measurements.  We project spot rates at reset days specified by each swap contract to determine future cash flows, then discount to present value using either LIBOR or OIS curves depending on whether the swap positions are fully collateralized as of the measurement date.  When the value of any collateral placed with counterparties is less than the interest rate derivative liability, a credit valuation adjustment ("CVA") is applied to reflect the credit risk we pose to counterparties.  We have used the spread between the Standard & Poor's BBB rated U.S. Bank Composite rate and LIBOR for the closest maturity term corresponding to the duration of the swaps to derive the CVA. A similar credit risk adjustment, correlated to the credit standing of the counterparty, is made when collateral posted by the counterparty does not fully cover their liability to the Bank. For further discussion on our methodology in valuing our derivative financial instruments, refer to Note 9, Derivative Financial Instruments and Hedging Activities.

Certain financial assets may be measured at fair value on a non-recurring basis. These assets are subject to fair value adjustments that result from the application of the lower of cost or fair value accounting or write-downs of individual assets, such as impaired loans and other real estate owned ("OREO").

The following table presents the carrying value of assets measured at fair value on a non-recurring basis and that were held in the consolidated statements of condition at each respective period end, by level within the fair value hierarchy as of March 31, 2017 and December 31, 2016.

(in thousands)	Carrying Value	Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)	Significant Unobservable Inputs  (Level 3)
March 31, 2017
Other real estate owned	238	—	—	238
December 31, 2016
Other real estate owned	408	—	—	408

When a loan is identified as impaired, it is reported at the lower of cost or fair value, measured based on the loan's observable market price (Level 1) or the current net realizable value of the underlying collateral securing the loan, if the loan is collateral dependent (Level 3).  Net realizable value of the underlying collateral is the fair value of the collateral less estimated selling costs and any prior liens. Appraisals, recent comparable sales, offers and listing prices are factored in when valuing the collateral. We review and verify the qualifications and licenses of the certified general appraisers used for appraising commercial properties or certified residential appraisers for residential properties. Real estate appraisals may utilize a combination of approaches including replacement cost, sales comparison and the income approach. Comparable sales and income data are analyzed by the appraisers and adjusted to reflect differences between them and the subject property such as property characteristics, leasing status and physical condition. When appraisals are received, Management reviews the underlying assumptions and methodology utilized, as well as the overall resulting value in conjunction with independent data sources such as recent market data and industry-wide statistics. We generally use a 6% discount for selling costs which is applied to all properties, regardless of size. Appraised values may be adjusted to reflect changes in market conditions that have occurred subsequent to the appraisal date, or for revised estimates regarding the timing or cost of the property sale. These adjustments are based on qualitative judgments made by Management on a case-by-case basis and are generally unobservable valuation inputs as they are specific to the underlying collateral. There have been no significant changes in the valuation techniques during 2017. As of March 31, 2017 and December 31, 2016, there were no collateral-dependent loans whose principal balances had been written down to the values of the underlying collateral.

OREO represents collateral acquired through foreclosure and is initially recorded at fair value as established by a current appraisal, adjusted for disposition costs. Subsequently, OREO is measured at lower of cost or fair value. OREO values are reviewed on an ongoing basis and any subsequent decline in fair value is recorded as a foreclosed asset expense in the current period. The value of OREO is determined based on independent appraisals, similar to the process used for impaired loans, discussed above, and is classified as Level 3. All OREO resulted from an acquisition. There were no changes in the estimated fair values of OREO during the first three months of 2017 or 2016.

Disclosures about Fair Value of Financial Instruments

The table below is a summary of fair value estimates for financial instruments as of March 31, 2017 and December 31, 2016, excluding financial instruments recorded at fair value on a recurring basis (summarized in the first table in this note). The carrying amounts in the following table are recorded in the consolidated statements of condition under the indicated captions. Further, we have not disclosed the fair value of financial instruments specifically excluded from disclosure requirements such as bank-owned life insurance policies ("BOLI"). Additionally, we hold shares of FHLB stock and Visa Inc. Class B common stock at cost. These shares are restricted from resale and their values are discussed in Note 4, Investment Securities.

	March 31, 2017					December 31, 2016
(in thousands)	Carrying Amounts		Fair Value		Fair Value Hierarchy	Carrying Amounts		Fair Value		Fair Value Hierarchy
Financial assets
Cash and cash equivalents	$	73,162	$	73,162	Level 1	$	48,804	$	48,804	Level 1
Investment securities held-to-maturity	172,272		172,421		Level 2	44,438		45,097		Level 2
Loans, net	1,462,351		1,444,456		Level 3	1,471,174		1,473,360		Level 3
Interest receivable	5,721		5,721		Level 2	6,319		6,319		Level 2
Financial liabilities
Deposits	1,779,269		1,779,533		Level 2	1,772,700		1,773,102		Level 2
Subordinated debentures	5,628		5,162		Level 3	5,586		5,083		Level 3
Interest payable	131		131		Level 2	134		134		Level 2

Following is a description of methods and assumptions used to estimate the fair value of each class of financial instrument not recorded at fair value but required for disclosure purposes:

Cash and Cash Equivalents - The carrying amounts of cash and cash equivalents approximate their fair value because of the short-term nature of these instruments.

Held-to-maturity Securities - Held-to-maturity securities, which generally consist of obligations of state and political subdivisions and corporate bonds, are recorded at their amortized cost. Their fair value for disclosure purposes is determined using methodologies similar to those described above for available-for-sale securities using Level 2 inputs. If Level 2 inputs are not available, we may utilize pricing models that incorporate unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities (Level 3).  As of March 31, 2017 and December 31, 2016, we did not hold any held-to-maturity securities whose fair value was measured using significant unobservable inputs.

Loans - The fair value of loans with variable interest rates approximates their current carrying value, because their rates are regularly adjusted to current market rates. The fair value of fixed rate loans or variable loans at negotiated interest rate floors or ceilings with remaining maturities in excess of one year is estimated by discounting the future cash flows using current market rates at which similar loans would be made to borrowers with similar creditworthiness and similar remaining maturities. The allowance for loan losses (“ALLL”) is considered to be a reasonable estimate of the portion of loan discount attributable to credit risks.

Interest Receivable and Payable - The interest receivable and payable balances approximate their fair value due to the short-term nature of their settlement dates.

Deposits - The fair value of deposits without stated maturity, such as transaction accounts, savings accounts and money market accounts, is the amount payable on demand at the reporting date. The fair value of time deposits is estimated by discounting the future cash flows using current rates offered for deposits of similar remaining maturities.

Federal Home Loan Bank Borrowing - The fair value is estimated by discounting the future cash flows using current rates offered by the FHLB for similar credit advances corresponding to the remaining term of our fixed-rate credit advances.

Subordinated Debentures - The fair values of the subordinated debentures are estimated by discounting the future cash flows (interest payment at a rate of three-month LIBOR plus 3.05% and 1.40%) to their present values using current market rates at which similar bonds would be issued with similar credit ratings as ours and similar remaining maturities. Each interest payment is discounted at the spot rate of the corresponding term, determined based on the yields and terms of comparable trust preferred securities, plus a liquidity premium. In July 2010, the Dodd-Frank Act was signed into law and limits the ability of certain bank holding companies to treat trust preferred security debt issuances as Tier 1 capital. This law effectively closed the trust-preferred securities markets for new issuances and led to the absence of observable or comparable transactions in the market place. Due to the use of unobservable inputs of trust preferred securities, we consider the fair value to be a Level 3 measurement. See Note 6, Borrowings, for further information.

Commitments - The value of unrecognized financial instruments is estimated based on the fee income associated with the commitments which, in the absence of credit exposure, is considered to approximate their settlement value. The fair value of commitment fees was not material at March 31, 2017 and December 31, 2016, respectively.

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Investment Securities

3 Months Ended

Mar. 31, 2017

Investments, Debt and Equity Securities [Abstract]

Investment Securities

Investment Securities

Our investment securities portfolio consists of obligations of state and political subdivisions, corporate bonds, U.S. government agency securities, including residential and commercial mortgage-backed securities (“MBS”) and collateralized mortgage obligations (“CMOs”) issued or guaranteed by Federal National Mortgage Association ("FNMA"), Federal Home Loan Mortgage Corporation ("FHLMC"), or Government National Mortgage Association ("GNMA"), debentures issued by government-sponsored agencies such as FNMA, Federal Farm Credit Bureau, FHLB and FHLMC, as well as privately issued CMOs, as reflected in the table below:

	March 31, 2017									December 31, 2016
	Amortized		Fair		Gross Unrealized					Amortized		Fair		Gross Unrealized
(in thousands)	Cost		Value		Gains		(Losses)			Cost		Value		Gains		(Losses)
Held-to-maturity:
Obligations of state and   political subdivisions	$	27,741	$	28,407	$	669	$	(3	)	$	30,856	$	31,544	$	694	$	(6	)
Corporate bonds	3,514		3,511		—		(3		)	3,519		3,518		—		(1		)
MBS pass-through securities issued by FHLMC and FNMA	109,357		108,843		109		(623		)	10,063		10,035		126		(154		)
CMOs issued by FHLMC	31,660		31,660		50		(50		)	—		—		—		—
Total held-to-maturity	172,272		172,421		828		(679		)	44,438		45,097		820		(161		)
Available-for-sale:
Securities of U.S. government agencies:
MBS pass-through securities issued by FHLMC and FNMA	93,676		93,719		328		(285		)	193,998		190,566		145		(3,577		)
CMOs issued by FNMA	12,897		12,874		84		(107		)	13,790		13,772		91		(109		)
CMOs issued by FHLMC	10,237		10,260		25		(2		)	43,452		42,758		37		(731		)
CMOs issued by GNMA	6,181		6,268		87		—			6,844		6,945		102		(1		)
Debentures of government- sponsored agencies	35,488		35,386		2		(104		)	35,486		35,403		7		(90		)
Privately issued CMOs	305		305		—		—			419		419		1		(1		)
Obligations of state and political subdivisions	78,905		77,843		237		(1,299		)	79,306		77,701		135		(1,740		)
Corporate bonds	4,961		5,029		68		—			4,959		5,016		57		—
Total available-for-sale	242,650		241,684		831		(1,797		)	378,254		372,580		575		(6,249		)
Total investment securities	$	414,922	$	414,105	$	1,659	$	(2,476	)	$	422,692	$	417,677	$	1,395	$	(6,410	)

The amortized cost and fair value of investment debt securities by contractual maturity at March 31, 2017 are shown below. Expected maturities may differ from contractual maturities if the issuers of the securities have the right to call or prepay obligations with or without call or prepayment penalties.

	March 31, 2017								December 31, 2016
	Held-to-Maturity				Available-for-Sale				Held-to-Maturity				Available-for-Sale
(in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value
Within one year	$	10,401	$	10,424	$	21,417	$	21,386	$	13,473	$	13,506	$	20,136	$	20,109
After one but within five years	16,665		17,098		57,185		57,200		16,706		17,150		58,334		58,267
After five years through ten years	43,964		44,082		80,507		79,224		3,000		3,125		113,576		110,842
After ten years	101,242		100,817		83,541		83,874		11,259		11,316		186,208		183,362
Total	$	172,272	$	172,421	$	242,650	$	241,684	$	44,438	$	45,097	$	378,254	$	372,580

Sales of investment securities and gross gains and losses are shown in the following table. The sales of the held-to-maturity securities were due to evidence of significant deterioration of the issuers' creditworthiness since purchase.

	Three months ended
(in thousands)	March 31, 2017		March 31, 2016
Held-to-maturity:
Sales proceeds	$	—	$	54,985
Gross realized gains	—		110
Gross realized losses	—		—

Investment securities carried at $103.6 million and $109.1 million at March 31, 2017 and December 31, 2016, respectively, were pledged with the State of California: $102.8 million and $108.3 million to secure public deposits in compliance with the Local Agency Security Program at March 31, 2017 and December 31, 2016, respectively, and $819 thousand and $822 thousand to provide collateral for trust deposits at March 31, 2017 and December 31, 2016, respectively. In addition, investment securities carried at $2.1 million were pledged to collateralize a Wealth Management and Trust Services (“WMTS”) checking account at both March 31, 2017 and December 31, 2016.

As part of our ongoing review of our investment securities portfolio, we reassessed the classification of certain MBS pass-through and CMOs securities issued by FHLMC and FNMA. Effective February 24, 2017, we transferred $129 million of these securities, which we intend and have the ability to hold to maturity, from available-for-sale securities to held-to-maturity at fair value. The unrealized pre-tax loss of $3.0 million at the date of transfer remained in accumulated other comprehensive income and is amortized over the remaining lives of the securities.

Other-Than-Temporarily Impaired ("OTTI") Debt Securities

We have evaluated the credit of our investment securities and their issuers and/or insurers. Based on our evaluation, Management has determined that no investment security in our investment portfolio is other-than-temporarily impaired as of March 31, 2017. We do not have the intent and it is more likely than not that we will not have to sell the remaining securities temporarily impaired at March 31, 2017 before recovery of the amortized cost basis.

There were 106 and 134investment securities in unrealized loss positions at March 31, 2017 and December 31, 2016, respectively. Those securities are summarized and classified according to the duration of the loss period in the tables below:

March 31, 2017	< 12 continuous months					≥ 12 continuous months					Total securities  in a loss position
(in thousands)	Fair value		Unrealized loss			Fair value		Unrealized loss			Fair value		Unrealized loss
Held-to-maturity:
Obligations of state and political subdivisions	$	1,493	$	(1	)	$	545	$	(2	)	$	2,038	$	(3	)
Corporate bonds	3,512		(3		)	—		—			3,512		(3		)
MBS pass-through securities issued by FHLMC and FNMA	93,021		(623		)	—		—			93,021		(623		)
CMOs issued by FHLMC	11,604		(50		)	—		—			11,604		(50		)
Total held-to-maturity	109,630		(677		)	545		(2		)	110,175		(679		)
Available-for-sale:
MBS pass-through securities issued by FHLMC and FNMA	45,048		(285		)	—		—			45,048		(285		)
CMOs issued by FNMA	8,866		(107		)	—		—			8,866		(107		)
CMOs issued by FHLMC	6,553		(2		)	—		—			6,553		(2		)
Debentures of government- sponsored agencies	19,940		(50		)	9,945		(54		)	29,885		(104		)
Obligations of state add political subdivisions	41,822		(1,299		)	—		—			41,822		(1,299		)
Corporate bonds	1,000		—			—		—			1,000		—
Total available-for-sale	123,229		(1,743		)	9,945		(54		)	133,174		(1,797		)
Total temporarily impaired securities	$	232,859	$	(2,420	)	$	10,490	$	(56	)	$	243,349	$	(2,476	)

December 31, 2016	< 12 continuous months					≥ 12 continuous months					Total securities  in a loss position
(in thousands)	Fair value		Unrealized loss			Fair value		Unrealized loss			Fair value		Unrealized loss
Held-to-maturity:
Obligations of state and political subdivisions	$	2,250	$	(154	)	$	—	$	—		$	2,250	$	(154	)
Corporate bonds	3,362		(6		)	—		—			3,362		(6		)
MBS pass-through securities issued by FHLMC and FNMA	3,518		(1		)	—		—			3,518		(1		)
Total held-to-maturity	9,130		(161		)	—		—			9,130		(161		)
Available-for-sale:
MBS pass-through securities issued by FHLMC and FNMA	162,016		(3,577		)	—		—			162,016		(3,577		)
CMOs issued by FNMA	9,498		(109		)	—		—			9,498		(109		)
CMOs issued by FHLMC	31,545		(731		)	—		—			31,545		(731		)
CMOs issued by GNMA	1,583		(1		)	—		—			1,583		(1		)
Debentures of government- sponsored agencies	19,951		(38		)	9,946		(52		)	29,897		(90		)
Obligations of state and political subdivisions	59,567		(1,740		)	—		—			59,567		(1,740		)
Corporate bonds	154		(1		)	—		—			154		(1		)
Total available-for-sale	284,314		(6,197		)	9,946		(52		)	294,260		(6,249		)
Total temporarily impaired securities	$	293,444	$	(6,358	)	$	9,946	$	(52	)	$	303,390	$	(6,410	)

As of March 31, 2017, there was one debenture of government-sponsored agency security and one obligation of U.S. state and political subdivisions security that have been in a continuous loss position for twelve months or more. We have evaluated the securities and believe that the decline in fair value is primarily driven by factors other than credit. It is probable that we will be able to collect all amounts due according to the contractual terms and no other-than-temporary impairment exists on these securities. The debenture of government-sponsored agency security is supported by the U.S. Federal Government, which protects us from credit losses. Based upon our assessment of the credit fundamentals, we concluded that these securities were not other-than-temporarily impaired at March 31, 2017.

There were 104 investment securities in our portfolio that had been in temporary loss positions for less than twelve months as of March 31, 2017, and their temporary loss positions mainly arose from changes in interest rates since purchase. They consisted of one debenture of U.S. government-sponsored agencies, 65 obligations of U.S. state and political subdivisions, 28 MBS and eight CMOs issued by government-sponsored agencies, and two corporate bonds. Securities of government-sponsored agencies are supported by the U.S. Federal Government, which protects us from credit losses. Other temporarily impaired securities are deemed creditworthy after internal analysis of the issuers' latest financial information and credit enhancement. Additionally, all are rated as investment grade by at least one major rating agency. As a result of this impairment analysis, we concluded that these securities were not other-than-temporarily impaired at March 31, 2017.

Non-Marketable Securities

As a member of the FHLB, we are required to maintain a minimum investment in FHLB capital stock determined by the Board of Directors of the FHLB. The minimum investment requirements can increase in the event we increase our total asset size or borrowings with the FHLB. Shares cannot be purchased or sold except between the FHLB and its members at the $100 per share par value. We held $10.2 million of FHLB stock recorded at cost in other assets on the consolidated statements of condition at both March 31, 2017 and December 31, 2016. The carrying amounts of these investments are reasonable estimates of fair value because the securities are restricted to member banks and they do not have a readily determinable market value. Management does not believe that the FHLB stock is other-than-temporarily-impaired, due to FHLB's current financial condition. On April 27, 2017, FHLB announced a cash dividend for the first quarter of 2017 at an annualized dividend rate of 7.00% to be distributed in mid-May 2017. Cash dividends paid on FHLB capital stock are recorded as non-interest income.

As a member bank of Visa U.S.A., we hold 16,939 shares of Visa Inc. Class B common stock with a carrying value of zero, which is equal to our cost basis. These shares are restricted from resale until their conversion into Class A (voting) shares upon the termination of Visa Inc.'s Covered Litigation escrow account. As a result of the restriction, these shares are not considered available-for-sale and are not carried at fair value. When converting this Class B common stock to Class A common stock based on the conversion rate of 1.6483 and the closing stock price of Class A shares, the value of our shares of Class B common stock would have been $2.5 million and $2.2 million at March 31, 2017 and December 31, 2016, respectively. The conversion rate is subject to further reduction upon the final settlement of the covered litigation against Visa Inc. and its member banks. For further information, see Note 8, Commitments and Contingencies.

We invest in low income housing tax credit funds as a limited partner, which totaled $2.4 million and $2.5 million recorded in other assets as of March 31, 2017 and December 31, 2016, respectively. In the first three months of 2017, we recognized $87 thousand of low income housing tax credits and other tax benefits, net of $70 thousand of amortization expense of low income housing tax credit investment, as a component of income tax expense. As of March 31, 2017, our unfunded commitments for these low income housing tax credit funds totaled $1.1 million. We did not recognize any impairment losses on these low income housing tax credit investments during the first three months of 2017 or 2016.

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Loans and Allowance for Loan Losses

3 Months Ended

Mar. 31, 2017

Receivables [Abstract]

Loans and Allowance for Loan Losses

Loans and Allowance for Loan Losses

Credit Quality of Loans

The following table shows outstanding loans by class and payment aging as of March 31, 2017 and December 31, 2016.

Loan Aging Analysis by Loan Class
(in thousands)	Commercial and industrial		Commercial real estate, owner-occupied		Commercial real estate, investor		Construction		Home equity		Other residential 1		Installment and other consumer		Total
March 31, 2017
30-59 days past due	$	600	$	133	$	—	$	—	$	77	$	—	$	24	$	834
60-89 days past due	—		—		1,076		—		—		—		—		1,076
90 days or more past due	—		—		—		—		—		—		—		—
Total past due	600		133		1,076		—		77		—		24		1,910
Current	219,160		254,047		711,005		67,162		115,103		84,720		24,463		1,475,660
Total loans 3	$	219,760	$	254,180	$	712,081	$	67,162	$	115,180	$	84,720	$	24,487	$	1,477,570
Non-accrual loans 2	$	—	$	—	$	1,076	$	—	$	87	$	—	$	52	$	1,215
December 31, 2016
30-59 days past due	$	283	$	—	$	—	$	—	$	77	$	—	$	2	$	362
60-89 days past due	—		—		—		—		—		—		49		49
90 days or more past due	—		—		—		—		91		—		—		91
Total past due	283		—		—		—		168		—		51		502
Current	218,332		247,713		724,228		74,809		117,039		78,549		25,444		1,486,114
Total loans 3	$	218,615	$	247,713	$	724,228	$	74,809	$	117,207	$	78,549	$	25,495	$	1,486,616
Non-accrual loans 2	$	—	$	—	$	—	$	—	$	91	$	—	$	54	$	145

¹ Our residential loan portfolio does not include sub-prime loans, nor is it our practice to underwrite loans commonly referred to as "Alt-A mortgages", the characteristics of which are loans lacking full documentation, borrowers having low FICO scores or higher loan-to-value ratios.

² There were no purchased credit impaired ("PCI") loans that had stopped accreting interest at March 31, 2017 and December 31, 2016. Amounts exclude accreting PCI loans of $2.9 million at March 31, 2017 and December 31, 2016, as we have a reasonable expectation about future cash flows to be collected and we continue to recognize accretable yield on these loans in interest income. There were no accruing loans past due more than ninety days at March 31, 2017 or December 31, 2016.

³ Amounts include net deferred loan origination costs of $808 thousand and $883 thousand at March 31, 2017 and December 31, 2016, respectively. Amounts are also net of unaccreted purchase discounts on non-PCI loans of $1.6 million and $1.8 million at March 31, 2017 and December 31, 2016, respectively.

Our commercial loans are generally made to established small and mid-sized businesses to provide financing for their growth and working capital needs, equipment purchases and/or acquisitions.  Management examines historical, current, and projected cash flows to determine the ability of the borrower to repay obligations as agreed. Commercial loans are made based primarily on the identified cash flows of the borrower and secondarily on the underlying collateral and/or guarantor support. The cash flows of borrowers, however, may not occur as expected, and the collateral securing these loans may fluctuate in value. Most commercial and industrial loans are secured by the assets being financed, such as accounts receivable and/or inventory, and typically include a personal guarantee. We target stable businesses with guarantors that have proven to be resilient in periods of economic stress.  Typically, the guarantors provide an additional source of repayment for most of our credit extensions.

Commercial real estate loans are subject to underwriting standards and processes similar to commercial loans discussed above. We underwrite these loans to be repaid from cash flow and to be supported by real property collateral. Underwriting standards for commercial real estate loans include, but are not limited to, debt coverage and loan-to-value ratios. Furthermore, substantially all of our loans are guaranteed by the owners of the properties.  Commercial real estate loans may be adversely affected by conditions in the real estate markets or in the general economy. In the event of a vacancy, guarantors are expected to carry the loans until a replacement tenant can be found.  The owner's substantial equity investment provides a strong economic incentive to continue to support the commercial real estate projects. As such, we have generally experienced a relatively low level of loss and delinquencies in this portfolio.

Construction loans are generally made to developers and builders to finance construction, renovation and occasionally land acquisitions in anticipation of near-term development. These loans are underwritten after evaluation of the borrower's financial strength, reputation, prior track record, and independent appraisals. The construction industry can be affected by significant events, including: the inherent volatility of real estate markets and vulnerability to delays due to weather, change orders, inability to obtain construction permits, labor or material shortages, and price changes. Estimates of construction costs and value associated with the completed project may be inaccurate. Repayment of construction loans is largely dependent on the ultimate success of the project.

Consumer loans primarily consist of home equity lines of credit, other residential (tenancy-in-common, or “TIC”) loans, floating homes and mobile homes along with a small number of installment loans. We originate consumer loans utilizing credit score information, debt-to-income ratio and loan-to-value ratio analysis. Diversification among consumer loan types, coupled with relatively small loan amounts that are spread across many individual borrowers, mitigates risk. Our other residential loans includes TIC units located almost entirely in San Francisco county.

We use a risk rating system to evaluate asset quality, and to identify and monitor credit risk in individual loans, and in the loan portfolio. Definitions of loans that are risk graded “Special Mention” or worse are consistent with those used by the Federal Deposit Insurance Corporation ("FDIC").  Our internally assigned grades are as follows:

Pass and Watch: Loans to borrowers of acceptable or better credit quality. Borrowers in this category demonstrate fundamentally sound financial positions, repayment capacity, credit history and management expertise.  Loans in this category must have an identifiable and stable source of repayment and meet the Bank’s policy regarding debt service coverage ratios.  These borrowers are capable of sustaining normal economic, market or operational setbacks without significant financial consequences.  Negative external industry factors are generally not present.  The loan may be secured, unsecured or supported by non-real estate collateral for which the value is more difficult to determine and/or marketability is more uncertain. This category also includes “Watch” loans, where the primary source of repayment has been delayed. “Watch” is intended to be a transitional grade, with either an upgrade or downgrade within a reasonable period.

Special Mention: Potential weaknesses that deserve close attention. If left uncorrected, those potential weaknesses may result in deterioration of the payment prospects for the asset. Special Mention assets do not present sufficient risk to warrant adverse classification.

Substandard: Inadequately protected by either the current sound worth and paying capacity of the obligor or the collateral pledged, if any. A Substandard asset has a well-defined weakness or weaknesses that jeopardize(s) the liquidation of the debt. Substandard assets are characterized by the distinct possibility that we will sustain some loss if such weaknesses or deficiencies are not corrected. Well-defined weaknesses include adverse trends or developments of the borrower’s financial condition, managerial weaknesses and/or significant collateral deficiencies.

Doubtful: Critical weaknesses that make collection or liquidation in full improbable. There may be specific pending events that work to strengthen the asset; however, the amount or timing of the loss may not be determinable. Pending events generally occur within one year of the asset being classified as Doubtful. Examples include: merger, acquisition, or liquidation; capital injection; guarantee; perfecting liens on additional collateral; and refinancing. Such loans are placed on non-accrual status and usually are collateral-dependent.

We regularly review our credits for accuracy of risk grades whenever new information is received. Borrowers are required to submit financial information at regular intervals. Generally, commercial borrowers with lines of credit are required to submit financial information with reporting intervals ranging from monthly to annually depending on credit size, risk and complexity. Investor commercial real estate borrowers are generally required to submit rent rolls or property income statements annually. Construction loans are monitored monthly, and reviewed on an ongoing basis. Home equity and other consumer loans are reviewed based on delinquency. Loans graded “Watch” or worse, regardless of loan type, are reviewed no less than quarterly.

The following table represents an analysis of the carrying amount in loans, net of deferred fees and costs and purchase premiums or discounts, by internally assigned risk grades, including PCI loans, at March 31, 2017 and December 31, 2016.

Credit Risk Profile by Internally Assigned Risk Grade
(in thousands)	Commercial and industrial		Commercial real estate, owner-occupied		Commercial real estate, investor		Construction		Home equity		Other residential		Installment and other consumer		Purchased credit-impaired		Total
March 31, 2017
Pass	$	201,777	$	239,437	$	707,223	$	63,921	$	113,868	$	84,720	$	24,081	$	2,937	$	1,437,964
Special Mention	4,554		4,573		249		—		—		—		—		—		9,376
Substandard	13,388		9,077		2,909		3,241		1,209		—		406		—		30,230
Total loans	$	219,719	$	253,087	$	710,381	$	67,162	$	115,077	$	84,720	$	24,487	$	2,937	$	1,477,570
December 31, 2016
Pass	$	201,987	$	234,849	$	720,417	$	71,564	$	115,680	$	78,549	$	25,083	$	2,920	$	1,451,049
Special Mention	9,197		4,799		607		—		1,334		—		—		—		15,937
Substandard	7,391		6,993		1,498		3,245		91		—		412		—		19,630
Total loans	$	218,575	$	246,641	$	722,522	$	74,809	$	117,105	$	78,549	$	25,495	$	2,920	$	1,486,616

Troubled Debt Restructuring

Our loan portfolio includes certain loans that have been modified in a troubled debt restructuring (“TDR”), where economic concessions have been granted to borrowers experiencing financial difficulties. These concessions typically result from our loss mitigation activities and could include reductions in the interest rate, payment extensions, forgiveness of principal, forbearance or other actions. TDRs on non-accrual status at the time of restructure may be returned to accruing status after Management considers the borrower’s sustained repayment performance for a reasonable period, generally six months, and obtains reasonable assurance of repayment and performance.

A loan may no longer be reported as a TDR if all of the following conditions are met:

• The loan is subsequently refinanced or restructured at current market interest rates and the new terms are consistent with the treatment of creditworthy borrowers under regular underwriting standards;

• The borrower is no longer considered to be in financial difficulty;

• Performance on the loan is reasonably assured; and;

• Existing loan did not have any forgiveness of principal or interest.

The removal of TDR status must be approved by the same Management level that approved the upgrading of the loan classification. There were no loans removed from TDR designation during 2017 and 2016.

The following table summarizes the carrying amount of TDR loans by loan class as of March 31, 2017 and December 31, 2016. The summary includes both TDRs that are on non-accrual status and those that continue to accrue interest.

(in thousands)
Recorded investment in Troubled Debt Restructurings 1	March 31, 2017		December 31, 2016
Commercial and industrial	$	2,070	$	2,207
Commercial real estate, owner-occupied	7,001		6,993
Commercial real estate, investor	2,235		2,256
Construction	3,241		3,245
Home equity	623		625
Other residential	1,175		1,965
Installment and other consumer	895		877
Total	$	17,240	$	18,168

¹ There were no TDR loans on non-accrual status at March 31, 2017 and December 31, 2016.

The following table presents information for loans modified in a TDR during the presented periods, including the number of contracts modified, the recorded investment in the loans prior to modification, and the recorded investment in the loans after being restructured. The table excludes fully charged-off TDR loans and loans modified in a TDR and subsequently paid-off during the years presented.

(dollars in thousands)	Number of Contracts Modified	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment at Period End
Troubled Debt Restructurings during the three months ended March 31, 2017:
Installment and other consumer	1	$	50	$	50	$	50
Troubled Debt Restructurings during the three months ended March 31, 2016:
Commercial real estate, investor	1	$	1,549	$	1,546	$	1,541

The modifications during the three months endedMarch 31, 2017 and 2016 primarily involved interest rate concessions and other changes to loan terms. During the first three months of 2017 and 2016, there were no defaults on loans that had been modified in a TDR within the prior twelve-month period. We report defaulted TDRs based on a payment default definition of more than ninety days past due.

Impaired Loans

The following tables summarize information by class on impaired loans and their related allowances. Total impaired loans include non-accrual loans, accruing TDR loans and accreting PCI loans that have experienced post-acquisition declines in cash flows expected to be collected.

(in thousands)	Commercial and industrial		Commercial real estate, owner-occupied		Commercial real estate, investor		Construction		Home equity		Other residential		Installment and other consumer		Total
March 31, 2017
Recorded investment in impaired loans:
With no specific allowance recorded	$	314	$	—	$	1,076	$	2,690	$	88	$	1,175	$	99	$	5,442
With a specific allowance recorded	1,756		7,001		2,235		551		623		—		847		13,013
Total recorded investment in impaired loans	$	2,070	$	7,001	$	3,311	$	3,241	$	711	$	1,175	$	946	$	18,455
Unpaid principal balance of impaired loans	$	2,054	$	6,993	$	3,323	$	3,238	$	708	$	1,174	$	946	$	18,436
Specific allowance	28		157		374		6		10		—		98		673
Average recorded investment in impaired loans during the quarter ended March 31, 2017	2,138		6,997		2,783		3,243		713		1,571		939		18,384
Interest income recognized on impaired loans during the quarter ended March 31, 2017 1	23		66		23		34		8		19		10		183
Average recorded investment in impaired loans during the quarter ended March 31, 2016	4,283		6,993		3,129		3,238		868		2,004		1,239		21,754
Interest income recognized on impaired loans during the quarter ended March 31, 2016 1	57		66		16		38		4		23		13		217

¹ No interest income on impaired loans was recognized on a cash basis during the three months ended March 31, 2017 and March 31, 2016.

(in thousands)	Commercial and industrial		Commercial real estate, owner-occupied		Commercial real estate, investor		Construction		Home equity		Other residential		Installment and other consumer		Total
December 31, 2016
Recorded investment in impaired loans:
With no specific allowance recorded	$	315	$	—	$	—	$	2,692	$	91	$	1,008	$	103	$	4,209
With a specific allowance recorded	1,892		6,993		2,256		553		624		957		829		14,104
Total recorded investment in impaired loans	$	2,207	$	6,993	$	2,256	$	3,245	$	715	$	1,965	$	932	$	18,313
Unpaid principal balance of impaired loans	$	2,177	$	6,993	$	2,252	$	3,238	$	713	$	1,965	$	932	$	18,270
Specific allowance	$	285	$	163	$	375	$	8	$	7	$	55	$	98	$	991

Management monitors delinquent loans continuously and identifies problem loans, generally loans graded substandard or worse, loans on non-accrual status and loans modified in a TDR, to be evaluated individually for impairment testing. Generally, the recorded investment in impaired loans is net of any charge-offs from estimated losses related to specifically-identified impaired loans when they are deemed uncollectible. There were no charged-off portions of impaired loans outstanding at March 31, 2017 and December 31, 2016. In addition, the recorded investment in impaired loans is net of purchase discounts or premiums on acquired loans and deferred fees and costs. At March 31, 2017 and December 31, 2016, respectively, unused commitments to extend credit on impaired loans, including performing loans to borrowers whose terms have been modified in TDRs, totaled $1.3 million and $1.6 million.

The following tables disclose activity in the allowance for loan losses ("ALLL") and the recorded investment in loans by class, as well as the related ALLL disaggregated by impairment evaluation method.

Allowance for Loan Losses Rollforward for the Period
(in thousands)	Commercial and industrial			Commercial real estate, owner-occupied			Commercial real estate, investor			Construction			Home equity		Other residential			Installment and other consumer			Unallocated			Total
Three months ended March 31, 2017
Beginning balance	$	3,248		$	1,753		$	6,320		$	781		$	973	$	454		$	372		$	1,541		$	15,442
Provision (reversal)	1,386			239			(187		)	(235		)	17		(10		)	(11		)	(1,199		)	—
Charge-offs	(284		)	—			—			—			—		—			(3		)	—			(287		)
Recoveries	63			—			—			—			—		—			1			—			64
Ending balance	$	4,413		$	1,992		$	6,133		$	546		$	990	$	444		$	359		$	342		$	15,219
Three months ended March 31, 2016
Beginning balance	$	3,023		$	2,249		$	6,178		$	724		$	910	$	394		$	425		$	1,096		$	14,999
Provision (reversal)	(247		)	(630		)	388			98			133		36			9			213			—
Charge-offs	(9		)	—			—			—			—		—			—			—			(9		)
Recoveries	32			—			5			—			1		—			—			—			38
Ending balance	$	2,799		$	1,619		$	6,571		$	822		$	1,044	$	430		$	434		$	1,309		$	15,028

Allowance for Loan Losses and Recorded Investment in Loans
(dollars in thousands)	Commercial and industrial			Commercial real estate, owner-occupied			Commercial real estate, investor			Construction			Home equity			Other residential			Installment and other consumer			Unallocated		Total
March 31, 2017
Ending ALLL related to loans collectively evaluated for impairment	$	4,385		$	1,835		$	5,759		$	540		$	980		$	444		$	261		$	342	$	14,546
Ending ALLL related to loans individually evaluated for impairment	28			157			374			6			10			—			98			—		673
Ending ALLL related to purchased credit-impaired loans	—			—			—			—			—			—			—			—		—
Ending balance	$	4,413		$	1,992		$	6,133		$	546		$	990		$	444		$	359		$	342	$	15,219
Recorded Investment:
Collectively evaluated for impairment	$	217,649		$	246,086		$	707,070		$	63,921		$	114,366		$	83,545		$	23,541		$	—	$	1,456,178
Individually evaluated for impairment	2,070			7,001			3,311			3,241			711			1,175			946			—		18,455
Purchased credit-impaired	41			1,093			1,700			—			103			—			—			—		2,937
Total	$	219,760		$	254,180		$	712,081		$	67,162		$	115,180		$	84,720		$	24,487		$	—	$	1,477,570
Ratio of allowance for loan losses to total loans	2.01		%	0.78		%	0.86		%	0.81		%	0.86		%	0.52		%	1.47		%	NM		1.03		%
Allowance for loan losses to non-accrual loans	NM			NM			570		%	NM			1,138		%	NM			690		%	NM		1,253		%

NM - Not Meaningful

Allowance for Loan Losses and Recorded Investment in Loans
(dollars in thousands)	Commercial and industrial			Commercial real estate, owner-occupied			Commercial real estate, investor			Construction			Home equity			Other residential			Installment and other consumer			Unallocated		Total
December 31, 2016
Ending ALLL related to loans collectively evaluated for impairment	$	2,963		$	1,590		$	5,945		$	773		$	966		$	399		$	274		$	1,541	$	14,451
Ending ALLL related to loans individually evaluated for impairment	285			163			375			8			7			55			98			—		991
Ending ALLL related to purchased  credit-impaired loans	—			—			—			—			—			—			—			—		—
Ending balance	$	3,248		$	1,753		$	6,320		$	781		$	973		$	454		$	372		$	1,541	$	15,442
Recorded Investment:
Collectively evaluated for impairment	$	216,368		$	239,648		$	720,266		$	71,564		$	116,390		$	76,584		$	24,563		$	—	$	1,465,383
Individually evaluated for impairment	2,207			6,993			2,256			3,245			715			1,965			932			—		18,313
Purchased credit-impaired	40			1,072			1,706			—			102			—			—			—		2,920
Total	$	218,615		$	247,713		$	724,228		$	74,809		$	117,207		$	78,549		$	25,495		$	—	$	1,486,616
Ratio of allowance for loan losses to total loans	1.49		%	0.71		%	0.87		%	1.04		%	0.83		%	0.58		%	1.46		%	NM		1.04		%
Allowance for loan losses to non-accrual loans	NM			NM			NM			NM			1,071		%	NM			683		%	NM		10,650		%

NM - Not Meaningful

Purchased Credit-Impaired Loans

Acquired loans are considered credit-impaired if there is evidence of significant deterioration of credit quality since origination and it is probable, at the acquisition date, that we will be unable to collect all contractually required payments receivable. Management has determined certain loans purchased in our two bank acquisitions to be PCI loans based on credit indicators such as nonaccrual status, past due status, loan risk grade, loan-to-value ratio, etc. Revolving credit agreements (e.g., home equity lines of credit and revolving commercial loans) are not considered PCI loans as cash flows cannot be reasonably estimated.

The following table reflects the unpaid principal balance and related carrying value of PCI loans.

PCI Loans	March 31, 2017				December 31, 2016
(in thousands)	Unpaid Principal Balance		Carrying Value		Unpaid Principal Balance		Carrying Value
Commercial and industrial	$	42	$	41	$	45	$	40
Commercial real estate, owner occupied	1,332		1,093		1,344		1,072
Commercial real estate, investor	1,702		1,700		1,713		1,706
Home equity	247		103		248		102
Total purchased credit-impaired loans	$	3,323	$	2,937	$	3,350	$	2,920

The activities in the accretable yield, or income expected to be earned over the remaining lives of the PCI loans were as follows:

Accretable Yield	Three months ended
(in thousands)	March 31, 2017			March 31, 2016
Balance at beginning of period	$	1,476		$	2,618
Additions	—			—
Removals 1	—			(778		)
Accretion	(90		)	(98		)
Reclassifications from nonaccretable difference 2	—			—
Balance at end of period	$	1,386		$	1,742

¹ Represents the accretable difference that is relieved when a loan exits the PCI population due to pay-off, full charge-off, or transfer to repossessed assets, etc.

² Primarily relates to changes in expected credit performance and changes in expected timing of cash flows.

Pledged Loans

Our FHLB line of credit is secured under terms of a blanket collateral agreement by a pledge of certain qualifying loans with an unpaid principal balance of $882.6 million and $869.2 million at March 31, 2017 and December 31, 2016, respectively. In addition, we pledge a certain residential loan portfolio, which totaled $55.8 million and $54.6 million at March 31, 2017 and December 31, 2016, respectively, to secure our borrowing capacity with the Federal Reserve Bank ("FRB"). Also see Note 6, Borrowings.

Related Party Loans

The Bank has, and expects to have in the future, banking transactions in the ordinary course of its business with directors, officers, principal shareholders and their businesses or associates. These transactions, including loans, are granted on substantially the same terms, including interest rates and collateral on loans, as those prevailing at the same time for comparable transactions with persons not related to us. Likewise, these transactions do not involve more than the normal risk of collectability or present other unfavorable features. During the first quarter of 2017, a new director joined our Board of Directors resulting in the reclassification of existing loans to the director's business to related party status. Related party loans totaled $9.5 million at March 31, 2017 compared to $2.0 million at December 31, 2016. In addition, undisbursed commitments to related parties totaled $9.1 million and $1.1 million at March 31, 2017 and December 31, 2016, respectively.

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Borrowings

3 Months Ended

Mar. 31, 2017

Debt Disclosure [Abstract]

Borrowings

Borrowings

Federal Funds Purchased – The Bank had unsecured lines of credit totaling $92.0 million with correspondent banks for overnight borrowings at both March 31, 2017 and December 31, 2016.  In general, interest rates on these lines approximate the federal funds target rate. We had no overnight borrowings under these credit facilities at March 31, 2017 or December 31, 2016.

Federal Home Loan Bank Borrowings – As of March 31, 2017 and December 31, 2016, the Bank had lines of credit with the FHLB totaling $505.9 million and $513.7 million, respectively, based on eligible collateral of certain loans. We had no FHLB overnight borrowings at March 31, 2017or December 31, 2016.

Federal Reserve Line of Credit – The Bank has a line of credit with the Federal Reserve Bank of San Francisco ("FRBSF") secured by certain residential loans.  At March 31, 2017 and December 31, 2016, the Bank had borrowing capacity under this line totaling $43.9 million and $43.1 million, respectively, and had no outstanding borrowings with the FRBSF.

As part of an acquisition, Bancorp assumed two subordinated debentures due to NorCal Community Bancorp Trusts I and II (the "Trusts"), established for the sole purpose of issuing trust preferred securities on September 22, 2003 and December 29, 2005, respectively. The trust preferred securities were sold and issued in private transactions pursuant to an exemption from registration under the Securities Act of 1933, as amended. Bancorp has guaranteed, on a subordinated basis, distributions and other payments due on trust preferred securities totaling $8.0 million issued by the Trusts which have identical maturity, repricing and payment terms as the subordinated debentures. The subordinated debentures were recorded at fair values totaling $4.95 million at acquisition date with contractual values totaling $8.2 million. The difference between the contractual balance and the fair value at acquisition date is accreted into interest expense over the lives of the debentures. Accretion on the subordinated debentures totaled $42 thousand and $50 thousand in the first three months of 2016 and 2017, respectively. Bancorp has the option to defer payment of the interest on the subordinated debentures for a period of up to five years, as long as there is no default on the subordinated debentures. In the event of interest deferral, dividends to Bancorp common stockholders are prohibited.

The following is a summary of the contractual terms of the subordinated debentures due to the Trusts as of March 31, 2017:

(in thousands)
Subordinated debentures due to NorCal Community Bancorp Trust I on October 7, 2033 with interest payable quarterly, based on 3-month LIBOR plus 3.05%, repricing quarterly (4.07% as of March 31, 2017), redeemable, in whole or in part, on any interest payment date	$	4,124
Subordinated debentures due to NorCal Community Bancorp Trust II on March 15, 2036 with interest payable quarterly, based on 3-month LIBOR plus 1.40%, repricing quarterly (2.53% as of March 31, 2017), redeemable, in whole or in part, on any interest payment date	4,124
Total	$	8,248

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Stockholders' Equity

3 Months Ended

Mar. 31, 2017

Equity [Abstract]

Stockholders' Equity

Stockholders' Equity

Dividends

Presented below is a summary of cash dividends paid to common shareholders, recorded as a reduction of retained earnings.

	Three months ended
(in thousands, except per share data)	March 31, 2017		March 31, 2016
Cash dividends to common stockholders	$	1,655	$	1,518
Cash dividends per common share	$	0.27	$	0.25

The Board of Directors declared a cash dividend of $0.27 per share on April 21, 2017 payable on May 12, 2017 to shareholders of record at the close of business on May 5, 2017.

Share-Based Payments

The fair value of stock options as of the grant date is recorded as stock-based compensation expense in the consolidated statements of comprehensive income over the requisite service period with a corresponding increase in common stock. Stock-based compensation also includes compensation expense related to the issuance of unvested restricted stock awards and performance-based stock awards pursuant to the 2007 Equity Plan. The grant-date fair value of the restricted stock awards and performance-based stock awards, which is equal to the intrinsic value on that date, is being recorded as compensation expense over the requisite service period with a corresponding increase in common stock as the shares vest.

Performance-based stock awards are issued to a selected group of employees. Stock award vesting is contingent upon the achievement of pre-established long-term performance goals set by the Compensation Committee of the Board of Directors. Performance is measured over a three-year period and cliff vested. These performance-based stock awards were granted at a maximum opportunity level, and based on the achievement of the pre-established goals, the actual payouts can range from 0% to 200% of the target award. For performance-based stock awards, an estimate is made of the number of shares expected to vest based on the probability that the performance criteria will be achieved to determine the amount of compensation expense to be recognized. The estimate is re-evaluated quarterly and total compensation expense is adjusted for any change in the current period.

We adopted ASU No. 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting effective January 1, 2017 as discussed in Note 2, which requires us to record excess tax benefits (deficiencies) resulting from the exercise of non-qualified stock options, the disqualifying disposition of incentive stock options and vesting of restricted stock awards as income tax benefits (expense) in the consolidated statements of comprehensive income with a corresponding decrease (increase) to current taxes payable. Previous to the adoption of this ASU, excess tax benefits (deficiencies) were recognized as an increase to common stock in the consolidated statements of changes in stockholders' equity.

The holders of unvested restricted stock awards and performance-based stock awards are entitled to dividends on the same per-share ratio as holders of common stock. Dividends paid on the portion of share-based awards forfeited or not expected to vest are included in stock-based compensation expense. Upon the adoption of the above ASU, tax benefits on dividends paid on the portion of share-based awards expected to vest are recorded as a tax benefit in the consolidated statements of comprehensive income with a corresponding decrease to current taxes payable. Previous to the adoption of the ASU, tax benefits on dividends were recognized as an increase to common stock in the consolidated statements of changes in stockholders' equity.

Under the 2007 Equity Plan, stock options may be net settled by a reduction in the number of shares otherwise deliverable upon exercise in satisfaction of the exercise payment and applicable tax withholding requirements. During the first quarter of 2017, we withheld 4,715 shares totaling $342 thousand at a weighted average price of $68.80 for cashless stock option exercises. There were no stock options exercised under net settlement arrangements in 2016. Shares withheld under net settlement arrangements are available for future grants under the 2007 Equity Plan.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

Financial Instruments with Off-Balance Sheet Risk

We make commitments to extend credit in the normal course of business to meet the financing needs of our customers. These financial instruments include commitments to extend credit in the form of loans or through standby letters of credit. 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 or other termination clauses and may require payment of a fee. Because various commitments will expire without being fully drawn upon, the total commitment amount does not necessarily represent future cash requirements.

We are exposed to credit loss equal to the contractual amount of the commitment in the event of nonperformance by the borrower. We use the same credit underwriting criteria for all credit exposure. The amount of collateral obtained, if deemed necessary by us, is based on Management's credit evaluation of the borrower. Collateral types pledged may include accounts receivable, inventory, other personal property and real property.

The contractual amount of undrawn loan commitments and standby letters of credit not reflected on the consolidated statements of condition are as follows:

(in thousands)	March 31, 2017		December 31, 2016
Commercial lines of credit	$	214,491	$	216,774
Revolving home equity lines	155,234		148,143
Undisbursed construction loans	33,498		44,798
Personal and other lines of credit	10,741		10,635
Standby letters of credit	1,829		1,939
Total commitments and standby letters of credit	$	415,793	$	422,289

We record an allowance for losses on these off-balance sheet commitments based on an estimate of probabilities of these commitments being drawn upon according to our historical utilization experience on different types of commitments and expected loss. We set aside an allowance for losses on off-balance sheet commitments in the amount of $1.1 million and $899 thousand as of March 31, 2017 and December 31, 2016, respectively, which is recorded in interest payable and other liabilities on the consolidated statements of condition.

Operating Leases

We rent certain premises under long-term, non-cancelable operating leases expiring at various dates through the year 2032. Most of the leases contain certain renewal options and escalation clauses. At March 31, 2017, the approximate minimum future commitments payable under non-cancelable contracts for leased premises are as follows:

(in thousands)	2017		2018		2019		2020		2021		Thereafter		Total
Operating leases1	$	2,928	$	3,932	$	3,739	$	3,420	$	2,138	$	4,234	$	20,391

¹ Minimum payments have not been reduced by minimum sublease rentals of $126 thousand due in the future under non-cancelable subleases.

Rent expense included in occupancy expense totaled $1.0 million for the three months ended March 31, 2017 and 2016.

Litigation Matters

We may be party to legal actions which arise from time to time during the normal course of business.  We believe, after consultation with legal counsel, that litigation contingent liability, if any, would not have a material adverse effect on our consolidated financial position, results of operations, or cash flows.

We are responsible for our proportionate share of certain litigation indemnifications provided to Visa U.S.A. ("Visa") by its member banks in connection with lawsuits related to anti-trust charges and interchange fees ("Covered Litigation"). Visa maintains an escrow account from which settlements of, or judgments in, the Covered Litigation are paid. While the accrual related to the Covered Litigation could be higher or lower than the litigation escrow account balance, Visa did not record an additional accrual for the Covered Litigation during the quarter ended March 31, 2017. At March 31, 2017, according to the latest SEC Form 10-Q filed by Visa, Inc. on April 21 2017, the balance of the escrow account was $978.0 million. In 2012, Visa reached a $4.0 billion interchange multidistrict litigation class settlement agreement. However, in February 2017, a number of class plaintiffs sought to either file an amended complaint for damages or file a new class complaint against Visa claiming for putative injunction relief. Visa has reached settlement agreements with individual merchants representing 34% of the sales volume of merchants who opted out of the 2012 Settlement Agreement. Litigation is ongoing and until the appeal process is complete, Visa is uncertain whether it will resolve the claims as contemplated by the settlement agreement and additional lawsuits may arise. The conversion rate of Visa Class B common stock held by us to Class A common stock (as discussed in Note 4 above) may decrease if Visa makes more Covered Litigation settlement payments in the future, and the full effect on member banks is still uncertain. However, we are not aware of significant future cash settlement payments required by us on the Covered Litigation.

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Derivative Financial Instruments and Hedging Activities

3 Months Ended

Mar. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments and Hedging Activities

Derivative Financial Instruments and Hedging Activities

We have entered into interest rate swap agreements, primarily as an asset/liability management strategy, in order to mitigate the changes in the fair value of specified long-term fixed-rate loans (or firm commitments to enter into long-term fixed-rate loans) caused by changes in interest rates. These hedges allow us to offer long-term fixed-rate loans to customers without assuming the interest rate risk of a long-term asset. Converting our fixed-rate interest payments to floating-rate interest payments, generally benchmarked to the one-month U.S. dollar LIBOR index, protects us against changes in the fair value of our loans associated with fluctuating interest rates.

Our credit exposure, if any, on interest rate swap asset positions is limited to the fair value (net of any collateral pledged to us) and interest payments of all swaps by each counterparty. Conversely, when an interest rate swap is in a liability position exceeding a certain threshold, we may be required to post collateral to the counterparty in an amount determined by the agreements. Collateral levels are monitored and adjusted on a regular basis for changes in interest rate swap values.

As of March 31, 2017, we had five interest rate swap agreements, which are scheduled to mature in June 2031, October 2031, July 2032, August 2037 and October 2037. All of our derivatives are accounted for as fair value hedges. The notional amounts of the interest rate contracts are equal to the notional amounts of the hedged loans. Our interest rate swap payments are settled monthly with counterparties. Accrued interest on the swaps totaled $12 thousand and $13 thousand as of March 31, 2017 and December 31, 2016, respectively.

Information on our derivatives follows:

	Asset derivatives				Liability derivatives
(in thousands)	March 31, 2017		December 31, 2016		March 31, 2017		December 31, 2016
Fair value hedges:
Interest rate contracts notional amount	$	4,168	$	4,217	$	15,324	$	15,495
Interest rate contracts fair value1	$	70	$	55	$	837	$	933

	Three months ended
(in thousands)	March 31, 2017			March 31, 2016
Increase (decrease) in value of designated interest rate swaps due to LIBOR interest rate movements recognized in interest income	$	111		$	(876	)
Payment on interest rate swaps recorded in interest income	(98		)	(174		)
(Decrease) increase in value of hedged loans recognized in interest income	(113		)	1,050
Decrease in value of yield maintenance agreement recognized against interest income	(4		)	(12		)
Net loss on derivatives recognized against interest income 2	$	(104	)	$	(12	)

¹ See Note 3, Fair Value of Assets and Liabilities, for valuation methodology.

² Includes hedge ineffectiveness loss of $6 thousand and gain of $162 thousand for the quarters ended March 31, 2017 and March 31, 2016, respectively. Changes in value of swaps were included in the assessment of hedge effectiveness. Hedge ineffectiveness is the measure of the extent to which the change in the fair value of the hedging instruments does not exactly offset the change in the fair value of the hedged items from period to period.

Our derivative transactions with counterparties are under International Swaps and Derivative Association (“ISDA”) master agreements that include “right of set-off” provisions. “Right of set-off” provisions are legally enforceable rights to offset recognized amounts and there may be an intention to settle such amounts on a net basis. We do not offset such financial instruments for financial reporting purposes.

Information on financial instruments that are eligible for offset in the consolidated statements of condition follows:

Offsetting of Financial Assets and Derivative Assets
			Gross Amounts		Net Amounts of		Gross Amounts Not Offset in
	Gross Amounts		Offset in the		Assets Presented		the Statements of Condition
	of Recognized		Statements of		in the Statements		Financial			Cash Collateral
(in thousands)	Assets1		Condition		of Condition1		Instruments			Received		Net Amount
March 31, 2017
Derivatives by Counterparty:
Counterparty A	$	70	$	—	$	70	$	(70	)	$	—	$	—
December 31, 2016
Derivatives by Counterparty:
Counterparty A	$	55	$	—	$	55	$	(55	)	$	—	$	—

¹Amounts exclude accrued interest totaling $1 thousand at both March 31, 2017 and December 31, 2016, respectively.

Offsetting of Financial Liabilities and Derivative Liabilities
			Gross Amounts		Net Amounts of		Gross Amounts Not Offset in
	Gross Amounts		Offset in the		Liabilities Presented		the Statements of Condition
	of Recognized		Statements of		in the Statements		Financial			Cash Collateral
(in thousands)	Liabilities2		Condition		of Condition2		Instruments			Pledged			Net Amount
March 31, 2017
Derivatives by Counterparty:
Counterparty A	$	837	$	—	$	837	$	(70	)	$	(767	)	$	—
December 31, 2016
Derivatives by Counterparty:
Counterparty A	$	933	$	—	$	933	$	(55	)	$	(878	)	$	—

² Amounts exclude accrued interest totaling $11 thousand and $12 thousand at March 31, 2017 and December 31, 2016, respectively.

For more information on how we account for our interest rate swaps, refer to Note 1 to the Consolidated Financial Statements included in our 2016 Form 10-K filed with the SEC on March 14, 2017.

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Basis of Presentation (Policies)

3 Months Ended

Mar. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Basis of Presentation

The consolidated financial statements include the accounts of Bank of Marin Bancorp (“Bancorp”), a bank holding company, and its wholly-owned bank subsidiary, Bank of Marin (the “Bank”), a California state-chartered commercial bank. References to “we,” “our,” “us” mean the holding company and the Bank that are consolidated for financial reporting purposes. The accompanying unaudited consolidated interim financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC"). Certain information and note disclosures normally included in annual financial statements prepared in accordance with generally accepted accounting principles ("GAAP") have been condensed or omitted pursuant to those rules and regulations. Although we believe that the disclosures are adequate and the information presented is not misleading, we suggest that these interim financial statements be read in conjunction with the annual financial statements and the notes thereto included in our 2016 Annual Report on Form 10-K.  In the opinion of Management, the unaudited consolidated financial statements reflect all adjustments which are necessary for a fair presentation of the consolidated financial position, the results of operations, changes in comprehensive income, changes in stockholders’ equity, and cash flows for the periods presented. All material intercompany transactions have been eliminated. The results of these interim periods may not be indicative of the results for the full year or for any other period. We have evaluated subsequent events through the date of filing with the SEC and have determined that there are no subsequent events that require additional recognition or disclosure.

The NorCal Community Bancorp Trusts I and II, respectively (the "Trusts") were formed for the sole purpose of issuing trust preferred securities. Bancorp is not considered the primary beneficiary of the Trusts (variable interest entities), therefore the Trusts are not consolidated in our consolidated financial statements, but rather the subordinated debentures are shown as a liability on our consolidated statements of condition (See Note 6, Borrowings). Bancorp's investment in the securities of the Trusts is accounted for under the equity method and is included in interest receivable and other assets on the consolidated statements of condition.

Earnings Per Share

Basic earnings per share (“EPS”) are calculated by dividing net income by the weighted average number of common shares outstanding during each period, excluding unvested restricted stock awards. Diluted EPS are calculated using the weighted average number of potentially dilutive common shares. The number of potentially dilutive common shares included in the quarterly diluted EPS is computed using the average market prices during the three months included in the reporting period under the treasury stock method. The number of potentially dilutive common shares included in year-to-date diluted EPS is a year-to-date weighted average of potentially dilutive common shares included in each quarterly diluted EPS computation. We have two forms of outstanding common stock: common stock and unvested restricted stock awards. Holders of unvested restricted stock awards receive non-forfeitable dividends at the same rate as common shareholders and they both share equally in undistributed earnings. Under the two-class method, the difference in EPS is not significant for these participating securities.

Recently Issued Accounting Standards

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). This ASU is a converged standard involving FASB and International Financial Reporting Standards that provides a single comprehensive revenue recognition model for all contracts with customers across transactions and industries. The core principal of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount and at a time that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Subsequent updates related to Revenue from Contracts with Customers (Topic 606) are as follows:

• August 2015 ASU No. 2015-14 - Deferral of the Effective Date, institutes a one-year deferral of the effective date of this amendment to annual reporting periods beginning after December 15, 2017. Early application is permitted only as of annual periods beginning after December 15, 2016, including interim reporting periods within that reporting period.

• March 2016 ASU No. 2016-08 - Principal versus Agent Considerations (Reporting Revenue Gross versus Net), clarifies the implementation guidance on principal versus agent considerations and on the use of indicators that assist an entity in determining whether it controls a specified good or service before it is transferred to the customer.

• April 2016 ASU No. 2016-10 - Identifying Performance Obligations and Licensing, provides guidance in determining performance obligations in a contract with a customer and clarifies whether a promise to grant a license provides a right to access or the right to use intellectual property.

• May 2016 ASU No. 2016-12 - Narrow Scope Improvements and Practical Expedients, gives further guidance on assessing collectability, presentation of sales taxes, noncash consideration, and completed contracts and contract modifications at transition.

• December 2016 ASU No. 2016-20 - Technical Corrections and Improvements to Topic 606, further clarifies specific aspects of previously issued guidance or corrects unintended application of the guidance.

Our revenue is mainly comprised of interest income on financial instruments, which is explicitly excluded from the scope of ASU 2014-09. While the recognition of certain revenue arrangements of components of our non-interest income may be affected by the ASU, we do not expect it to have a material impact on our financial condition and results of operations.

In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. The amendments in this ASU make improvements to accounting standards related to financial instruments, including the following:

• Requires equity investments, except for 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.

• Simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. When impairment exists, an entity is required to measure the investment at fair value.

• Eliminates the requirement to disclose the method(s) and significant assumptions used to estimate the fair value that is currently required to be disclosed for financial instruments measured at amortized cost on the balance sheet.

• Requires public companies to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes.

• Requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (i.e., securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements.

• Clarifies 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.

ASU 2016-01 is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. This ASU may affect our financial statement presentation and related footnotes, but we do not expect it to have a material impact on our financial condition or results of operations.

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). The amendments in this ASU intend to increase transparency and comparability among organizations by recognizing an asset, which represents the right to use the asset for the lease term, and a lease liability, which is a lessee's obligation to make lease payments measured on a discounted basis. This ASU generally applies to leasing arrangements exceeding a twelve month term. ASU 2016-02 is effective for annual periods, including interim periods within those annual periods beginning after December 15, 2018 and requires a modified retrospective method of adoption. Early application of the amendments is permitted. We intend to adopt this ASU during the first quarter of 2019, as required, and are currently evaluating accounting solutions. As of March 31, 2017, our undiscounted operating lease obligations that were off-balance sheet totaled $20.4 million (See Note 8, Commitments and Contingencies). Upon adoption of this ASU, the present values of leases currently classified as operating leases will be recognized as lease assets and liabilities on our balance sheet. Additional disclosures of key information about our leasing arrangements will also be required. We do not expect the ASU will have a material impact on our capital ratios or return on average assets when adopted and we are currently evaluating the effect the ASU will have on other components of our financial condition and results of operations.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. Under the new guidance, entities will be required to measure expected credit losses by utilizing forward-looking information to assess an entity's allowance for credit losses. The measurement of expected credit losses will be based on historical experience, current conditions and reasonable and supportable forecasts that affect the collectability of a credit over its remaining life. In addition, the ASU amends the accounting for potential credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Management refined our allowance for loan loss model in 2016 and enhanced our loan-level data collection and methodology for analyzing credit losses in preparation for the new accounting standards. We will continue our evaluation of the provisions of this ASU and will be monitoring developments, additional guidance and the potential outcome the amendments will have on our financial condition and results of operations upon adoption in the first quarter of 2020.

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU provides guidance on how to present and classify eight specific cash flow topics in the statement of cash flows. The ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The amendments should be applied using a retrospective transition method to each period presented, if practical. This ASU may affect our financial statement presentation, but we do not expect it to have a material impact on our financial condition or results of operations.

In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business. The amendments are intended to help companies evaluate whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses and provide a more robust framework to use in determining when a set of assets and activities is a business. The amendments are effective for annual periods after December 31, 2017, including interim periods within those periods. The amendments will be adopted prospectively. We will consider these amendments in our evaluation of the accounting for any future business acquisitions or asset disposals.

In January 2017, the FASB issued ASU No. 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. This amendment simplifies how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test, which would measure a goodwill impairment loss by comparing the implied fair value of goodwill with the carrying amount of that goodwill. Instead, an entity will perform only Step 1 of its quantitative goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount, and then recognizing an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value. The loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. The new guidance does not amend the optional qualitative assessment of goodwill impairment, which Bancorp currently uses. The ASU is effective for fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. We anticipate that this ASU will simplify our evaluation of the impairment of goodwill and do not expect it to have a material impact on our financial condition and results of operations.

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Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Earnings Per Share Reconciliation

The following table shows: 1) weighted average basic shares, 2) potentially dilutive weighted average common shares related to stock options and unvested restricted stock awards, and 3) weighted average diluted shares. Basic earnings per share (“EPS”) are calculated by dividing net income by the weighted average number of common shares outstanding during each period, excluding unvested restricted stock awards. Diluted EPS are calculated using the weighted average number of potentially dilutive common shares. The number of potentially dilutive common shares included in the quarterly diluted EPS is computed using the average market prices during the three months included in the reporting period under the treasury stock method. The number of potentially dilutive common shares included in year-to-date diluted EPS is a year-to-date weighted average of potentially dilutive common shares included in each quarterly diluted EPS computation. We have two forms of outstanding common stock: common stock and unvested restricted stock awards. Holders of unvested restricted stock awards receive non-forfeitable dividends at the same rate as common shareholders and they both share equally in undistributed earnings. Under the two-class method, the difference in EPS is not significant for these participating securities.

	Three months ended
(in thousands, except per share data)	March 31, 2017		March 31, 2016
Weighted average basic shares outstanding	6,092		6,048
Potentially dilutive common shares related to:
Stock options	62		35
Unvested restricted stock awards	18		7
Weighted average diluted shares outstanding	6,172		6,090
Net income	$	4,548	$	5,646
Basic EPS	$	0.75	$	0.93
Diluted EPS	$	0.74	$	0.93
Weighted average anti-dilutive shares not included in the calculation of diluted EPS	13		48

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Fair Value of Assets and Liabilities (Tables)

3 Months Ended

Mar. 31, 2017

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table summarizes our assets and liabilities that were required to be recorded at fair value on a recurring basis.

(in thousands)   Description of Financial Instruments	Carrying Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
March 31, 2017
Securities available-for-sale:
Mortgage-backed securities and collateralized mortgage obligations issued by U.S. government agencies	$	123,121	$	—	$	122,531	$	590
Debentures of government sponsored agencies	35,386		—		35,386		—
Privately-issued collateralized mortgage obligations	305		—		305		—
Obligations of state and political subdivisions	77,843		—		77,843		—
Corporate bonds	5,029		—		5,029		—
Derivative financial assets (interest rate contracts)	70		—		70		—
Derivative financial liabilities (interest rate contracts)	837		—		837		—
December 31, 2016
Securities available-for-sale:
Mortgage-backed securities and collateralized mortgage obligations issued by U.S. government agencies	$	254,041	$	—	$	253,434	$	607
Debentures of government sponsored agencies	35,403		—		35,403		—
Privately-issued collateralized mortgage obligations	419		—		419		—
Obligations of state and political subdivisions	77,701		—		77,701		—
Corporate bonds	5,016		—		5,016		—
Derivative financial assets (interest rate contracts)	55		—		55		—
Derivative financial liabilities (interest rate contracts)	933		—		933		—

Fair Value Measurements, Nonrecurring

The following table presents the carrying value of assets measured at fair value on a non-recurring basis and that were held in the consolidated statements of condition at each respective period end, by level within the fair value hierarchy as of March 31, 2017 and December 31, 2016.

(in thousands)	Carrying Value	Quoted Prices in Active Markets for Identical Assets (Level 1)	Significant Other Observable Inputs (Level 2)	Significant Unobservable Inputs  (Level 3)
March 31, 2017
Other real estate owned	238	—	—	238
December 31, 2016
Other real estate owned	408	—	—	408

Fair Value, by Balance Sheet Grouping

The table below is a summary of fair value estimates for financial instruments as of March 31, 2017 and December 31, 2016, excluding financial instruments recorded at fair value on a recurring basis (summarized in the first table in this note). The carrying amounts in the following table are recorded in the consolidated statements of condition under the indicated captions. Further, we have not disclosed the fair value of financial instruments specifically excluded from disclosure requirements such as bank-owned life insurance policies ("BOLI"). Additionally, we hold shares of FHLB stock and Visa Inc. Class B common stock at cost. These shares are restricted from resale and their values are discussed in Note 4, Investment Securities.

	March 31, 2017					December 31, 2016
(in thousands)	Carrying Amounts		Fair Value		Fair Value Hierarchy	Carrying Amounts		Fair Value		Fair Value Hierarchy
Financial assets
Cash and cash equivalents	$	73,162	$	73,162	Level 1	$	48,804	$	48,804	Level 1
Investment securities held-to-maturity	172,272		172,421		Level 2	44,438		45,097		Level 2
Loans, net	1,462,351		1,444,456		Level 3	1,471,174		1,473,360		Level 3
Interest receivable	5,721		5,721		Level 2	6,319		6,319		Level 2
Financial liabilities
Deposits	1,779,269		1,779,533		Level 2	1,772,700		1,773,102		Level 2
Subordinated debentures	5,628		5,162		Level 3	5,586		5,083		Level 3
Interest payable	131		131		Level 2	134		134		Level 2

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Investment Securities (Tables)

3 Months Ended

Mar. 31, 2017

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Securities and Held-to-maturity Securities Reconciliation

Our investment securities portfolio consists of obligations of state and political subdivisions, corporate bonds, U.S. government agency securities, including residential and commercial mortgage-backed securities (“MBS”) and collateralized mortgage obligations (“CMOs”) issued or guaranteed by Federal National Mortgage Association ("FNMA"), Federal Home Loan Mortgage Corporation ("FHLMC"), or Government National Mortgage Association ("GNMA"), debentures issued by government-sponsored agencies such as FNMA, Federal Farm Credit Bureau, FHLB and FHLMC, as well as privately issued CMOs, as reflected in the table below:

	March 31, 2017									December 31, 2016
	Amortized		Fair		Gross Unrealized					Amortized		Fair		Gross Unrealized
(in thousands)	Cost		Value		Gains		(Losses)			Cost		Value		Gains		(Losses)
Held-to-maturity:
Obligations of state and   political subdivisions	$	27,741	$	28,407	$	669	$	(3	)	$	30,856	$	31,544	$	694	$	(6	)
Corporate bonds	3,514		3,511		—		(3		)	3,519		3,518		—		(1		)
MBS pass-through securities issued by FHLMC and FNMA	109,357		108,843		109		(623		)	10,063		10,035		126		(154		)
CMOs issued by FHLMC	31,660		31,660		50		(50		)	—		—		—		—
Total held-to-maturity	172,272		172,421		828		(679		)	44,438		45,097		820		(161		)
Available-for-sale:
Securities of U.S. government agencies:
MBS pass-through securities issued by FHLMC and FNMA	93,676		93,719		328		(285		)	193,998		190,566		145		(3,577		)
CMOs issued by FNMA	12,897		12,874		84		(107		)	13,790		13,772		91		(109		)
CMOs issued by FHLMC	10,237		10,260		25		(2		)	43,452		42,758		37		(731		)
CMOs issued by GNMA	6,181		6,268		87		—			6,844		6,945		102		(1		)
Debentures of government- sponsored agencies	35,488		35,386		2		(104		)	35,486		35,403		7		(90		)
Privately issued CMOs	305		305		—		—			419		419		1		(1		)
Obligations of state and political subdivisions	78,905		77,843		237		(1,299		)	79,306		77,701		135		(1,740		)
Corporate bonds	4,961		5,029		68		—			4,959		5,016		57		—
Total available-for-sale	242,650		241,684		831		(1,797		)	378,254		372,580		575		(6,249		)
Total investment securities	$	414,922	$	414,105	$	1,659	$	(2,476	)	$	422,692	$	417,677	$	1,395	$	(6,410	)

Investments Classified by Contractual Maturity Date

The amortized cost and fair value of investment debt securities by contractual maturity at March 31, 2017 are shown below. Expected maturities may differ from contractual maturities if the issuers of the securities have the right to call or prepay obligations with or without call or prepayment penalties.

	March 31, 2017								December 31, 2016
	Held-to-Maturity				Available-for-Sale				Held-to-Maturity				Available-for-Sale
(in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value
Within one year	$	10,401	$	10,424	$	21,417	$	21,386	$	13,473	$	13,506	$	20,136	$	20,109
After one but within five years	16,665		17,098		57,185		57,200		16,706		17,150		58,334		58,267
After five years through ten years	43,964		44,082		80,507		79,224		3,000		3,125		113,576		110,842
After ten years	101,242		100,817		83,541		83,874		11,259		11,316		186,208		183,362
Total	$	172,272	$	172,421	$	242,650	$	241,684	$	44,438	$	45,097	$	378,254	$	372,580

Schedule of Realized Gain (Loss)

Sales of investment securities and gross gains and losses are shown in the following table. The sales of the held-to-maturity securities were due to evidence of significant deterioration of the issuers' creditworthiness since purchase.

	Three months ended
(in thousands)	March 31, 2017		March 31, 2016
Held-to-maturity:
Sales proceeds	$	—	$	54,985
Gross realized gains	—		110
Gross realized losses	—		—

Schedule of Unrealized Loss on Investments

Those securities are summarized and classified according to the duration of the loss period in the tables below:

March 31, 2017	< 12 continuous months					≥ 12 continuous months					Total securities  in a loss position
(in thousands)	Fair value		Unrealized loss			Fair value		Unrealized loss			Fair value		Unrealized loss
Held-to-maturity:
Obligations of state and political subdivisions	$	1,493	$	(1	)	$	545	$	(2	)	$	2,038	$	(3	)
Corporate bonds	3,512		(3		)	—		—			3,512		(3		)
MBS pass-through securities issued by FHLMC and FNMA	93,021		(623		)	—		—			93,021		(623		)
CMOs issued by FHLMC	11,604		(50		)	—		—			11,604		(50		)
Total held-to-maturity	109,630		(677		)	545		(2		)	110,175		(679		)
Available-for-sale:
MBS pass-through securities issued by FHLMC and FNMA	45,048		(285		)	—		—			45,048		(285		)
CMOs issued by FNMA	8,866		(107		)	—		—			8,866		(107		)
CMOs issued by FHLMC	6,553		(2		)	—		—			6,553		(2		)
Debentures of government- sponsored agencies	19,940		(50		)	9,945		(54		)	29,885		(104		)
Obligations of state add political subdivisions	41,822		(1,299		)	—		—			41,822		(1,299		)
Corporate bonds	1,000		—			—		—			1,000		—
Total available-for-sale	123,229		(1,743		)	9,945		(54		)	133,174		(1,797		)
Total temporarily impaired securities	$	232,859	$	(2,420	)	$	10,490	$	(56	)	$	243,349	$	(2,476	)

December 31, 2016	< 12 continuous months					≥ 12 continuous months					Total securities  in a loss position
(in thousands)	Fair value		Unrealized loss			Fair value		Unrealized loss			Fair value		Unrealized loss
Held-to-maturity:
Obligations of state and political subdivisions	$	2,250	$	(154	)	$	—	$	—		$	2,250	$	(154	)
Corporate bonds	3,362		(6		)	—		—			3,362		(6		)
MBS pass-through securities issued by FHLMC and FNMA	3,518		(1		)	—		—			3,518		(1		)
Total held-to-maturity	9,130		(161		)	—		—			9,130		(161		)
Available-for-sale:
MBS pass-through securities issued by FHLMC and FNMA	162,016		(3,577		)	—		—			162,016		(3,577		)
CMOs issued by FNMA	9,498		(109		)	—		—			9,498		(109		)
CMOs issued by FHLMC	31,545		(731		)	—		—			31,545		(731		)
CMOs issued by GNMA	1,583		(1		)	—		—			1,583		(1		)
Debentures of government- sponsored agencies	19,951		(38		)	9,946		(52		)	29,897		(90		)
Obligations of state and political subdivisions	59,567		(1,740		)	—		—			59,567		(1,740		)
Corporate bonds	154		(1		)	—		—			154		(1		)
Total available-for-sale	284,314		(6,197		)	9,946		(52		)	294,260		(6,249		)
Total temporarily impaired securities	$	293,444	$	(6,358	)	$	9,946	$	(52	)	$	303,390	$	(6,410	)

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Loans and Allowance for Loan Losses (Tables)

3 Months Ended

Mar. 31, 2017

Receivables [Abstract]

Past Due Financing Receivables

The following table shows outstanding loans by class and payment aging as of March 31, 2017 and December 31, 2016.

Loan Aging Analysis by Loan Class
(in thousands)	Commercial and industrial		Commercial real estate, owner-occupied		Commercial real estate, investor		Construction		Home equity		Other residential 1		Installment and other consumer		Total
March 31, 2017
30-59 days past due	$	600	$	133	$	—	$	—	$	77	$	—	$	24	$	834
60-89 days past due	—		—		1,076		—		—		—		—		1,076
90 days or more past due	—		—		—		—		—		—		—		—
Total past due	600		133		1,076		—		77		—		24		1,910
Current	219,160		254,047		711,005		67,162		115,103		84,720		24,463		1,475,660
Total loans 3	$	219,760	$	254,180	$	712,081	$	67,162	$	115,180	$	84,720	$	24,487	$	1,477,570
Non-accrual loans 2	$	—	$	—	$	1,076	$	—	$	87	$	—	$	52	$	1,215
December 31, 2016
30-59 days past due	$	283	$	—	$	—	$	—	$	77	$	—	$	2	$	362
60-89 days past due	—		—		—		—		—		—		49		49
90 days or more past due	—		—		—		—		91		—		—		91
Total past due	283		—		—		—		168		—		51		502
Current	218,332		247,713		724,228		74,809		117,039		78,549		25,444		1,486,114
Total loans 3	$	218,615	$	247,713	$	724,228	$	74,809	$	117,207	$	78,549	$	25,495	$	1,486,616
Non-accrual loans 2	$	—	$	—	$	—	$	—	$	91	$	—	$	54	$	145

¹ Our residential loan portfolio does not include sub-prime loans, nor is it our practice to underwrite loans commonly referred to as "Alt-A mortgages", the characteristics of which are loans lacking full documentation, borrowers having low FICO scores or higher loan-to-value ratios.

² There were no purchased credit impaired ("PCI") loans that had stopped accreting interest at March 31, 2017 and December 31, 2016. Amounts exclude accreting PCI loans of $2.9 million at March 31, 2017 and December 31, 2016, as we have a reasonable expectation about future cash flows to be collected and we continue to recognize accretable yield on these loans in interest income. There were no accruing loans past due more than ninety days at March 31, 2017 or December 31, 2016.

³ Amounts include net deferred loan origination costs of $808 thousand and $883 thousand at March 31, 2017 and December 31, 2016, respectively. Amounts are also net of unaccreted purchase discounts on non-PCI loans of $1.6 million and $1.8 million at March 31, 2017 and December 31, 2016, respectively.

Financing Receivable Credit Quality Indicators

The following table represents an analysis of the carrying amount in loans, net of deferred fees and costs and purchase premiums or discounts, by internally assigned risk grades, including PCI loans, at March 31, 2017 and December 31, 2016.

Credit Risk Profile by Internally Assigned Risk Grade
(in thousands)	Commercial and industrial		Commercial real estate, owner-occupied		Commercial real estate, investor		Construction		Home equity		Other residential		Installment and other consumer		Purchased credit-impaired		Total
March 31, 2017
Pass	$	201,777	$	239,437	$	707,223	$	63,921	$	113,868	$	84,720	$	24,081	$	2,937	$	1,437,964
Special Mention	4,554		4,573		249		—		—		—		—		—		9,376
Substandard	13,388		9,077		2,909		3,241		1,209		—		406		—		30,230
Total loans	$	219,719	$	253,087	$	710,381	$	67,162	$	115,077	$	84,720	$	24,487	$	2,937	$	1,477,570
December 31, 2016
Pass	$	201,987	$	234,849	$	720,417	$	71,564	$	115,680	$	78,549	$	25,083	$	2,920	$	1,451,049
Special Mention	9,197		4,799		607		—		1,334		—		—		—		15,937
Substandard	7,391		6,993		1,498		3,245		91		—		412		—		19,630
Total loans	$	218,575	$	246,641	$	722,522	$	74,809	$	117,105	$	78,549	$	25,495	$	2,920	$	1,486,616

Troubled Debt Restructurings on Financing Receivables

The following table summarizes the carrying amount of TDR loans by loan class as of March 31, 2017 and December 31, 2016. The summary includes both TDRs that are on non-accrual status and those that continue to accrue interest.

(in thousands)
Recorded investment in Troubled Debt Restructurings 1	March 31, 2017		December 31, 2016
Commercial and industrial	$	2,070	$	2,207
Commercial real estate, owner-occupied	7,001		6,993
Commercial real estate, investor	2,235		2,256
Construction	3,241		3,245
Home equity	623		625
Other residential	1,175		1,965
Installment and other consumer	895		877
Total	$	17,240	$	18,168

¹ There were no TDR loans on non-accrual status at March 31, 2017 and December 31, 2016.

The following table presents information for loans modified in a TDR during the presented periods, including the number of contracts modified, the recorded investment in the loans prior to modification, and the recorded investment in the loans after being restructured. The table excludes fully charged-off TDR loans and loans modified in a TDR and subsequently paid-off during the years presented.

(dollars in thousands)	Number of Contracts Modified	Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment at Period End
Troubled Debt Restructurings during the three months ended March 31, 2017:
Installment and other consumer	1	$	50	$	50	$	50
Troubled Debt Restructurings during the three months ended March 31, 2016:
Commercial real estate, investor	1	$	1,549	$	1,546	$	1,541

Impaired Financing Receivables

The following tables summarize information by class on impaired loans and their related allowances. Total impaired loans include non-accrual loans, accruing TDR loans and accreting PCI loans that have experienced post-acquisition declines in cash flows expected to be collected.

(in thousands)	Commercial and industrial		Commercial real estate, owner-occupied		Commercial real estate, investor		Construction		Home equity		Other residential		Installment and other consumer		Total
March 31, 2017
Recorded investment in impaired loans:
With no specific allowance recorded	$	314	$	—	$	1,076	$	2,690	$	88	$	1,175	$	99	$	5,442
With a specific allowance recorded	1,756		7,001		2,235		551		623		—		847		13,013
Total recorded investment in impaired loans	$	2,070	$	7,001	$	3,311	$	3,241	$	711	$	1,175	$	946	$	18,455
Unpaid principal balance of impaired loans	$	2,054	$	6,993	$	3,323	$	3,238	$	708	$	1,174	$	946	$	18,436
Specific allowance	28		157		374		6		10		—		98		673
Average recorded investment in impaired loans during the quarter ended March 31, 2017	2,138		6,997		2,783		3,243		713		1,571		939		18,384
Interest income recognized on impaired loans during the quarter ended March 31, 2017 1	23		66		23		34		8		19		10		183
Average recorded investment in impaired loans during the quarter ended March 31, 2016	4,283		6,993		3,129		3,238		868		2,004		1,239		21,754
Interest income recognized on impaired loans during the quarter ended March 31, 2016 1	57		66		16		38		4		23		13		217

¹ No interest income on impaired loans was recognized on a cash basis during the three months ended March 31, 2017 and March 31, 2016.

(in thousands)	Commercial and industrial		Commercial real estate, owner-occupied		Commercial real estate, investor		Construction		Home equity		Other residential		Installment and other consumer		Total
December 31, 2016
Recorded investment in impaired loans:
With no specific allowance recorded	$	315	$	—	$	—	$	2,692	$	91	$	1,008	$	103	$	4,209
With a specific allowance recorded	1,892		6,993		2,256		553		624		957		829		14,104
Total recorded investment in impaired loans	$	2,207	$	6,993	$	2,256	$	3,245	$	715	$	1,965	$	932	$	18,313
Unpaid principal balance of impaired loans	$	2,177	$	6,993	$	2,252	$	3,238	$	713	$	1,965	$	932	$	18,270
Specific allowance	$	285	$	163	$	375	$	8	$	7	$	55	$	98	$	991

Allowance for Credit Losses on Financing Receivables

The following tables disclose activity in the allowance for loan losses ("ALLL") and the recorded investment in loans by class, as well as the related ALLL disaggregated by impairment evaluation method.

Allowance for Loan Losses Rollforward for the Period
(in thousands)	Commercial and industrial			Commercial real estate, owner-occupied			Commercial real estate, investor			Construction			Home equity		Other residential			Installment and other consumer			Unallocated			Total
Three months ended March 31, 2017
Beginning balance	$	3,248		$	1,753		$	6,320		$	781		$	973	$	454		$	372		$	1,541		$	15,442
Provision (reversal)	1,386			239			(187		)	(235		)	17		(10		)	(11		)	(1,199		)	—
Charge-offs	(284		)	—			—			—			—		—			(3		)	—			(287		)
Recoveries	63			—			—			—			—		—			1			—			64
Ending balance	$	4,413		$	1,992		$	6,133		$	546		$	990	$	444		$	359		$	342		$	15,219
Three months ended March 31, 2016
Beginning balance	$	3,023		$	2,249		$	6,178		$	724		$	910	$	394		$	425		$	1,096		$	14,999
Provision (reversal)	(247		)	(630		)	388			98			133		36			9			213			—
Charge-offs	(9		)	—			—			—			—		—			—			—			(9		)
Recoveries	32			—			5			—			1		—			—			—			38
Ending balance	$	2,799		$	1,619		$	6,571		$	822		$	1,044	$	430		$	434		$	1,309		$	15,028

Allowance for Loan Losses and Recorded Investment in Loans
(dollars in thousands)	Commercial and industrial			Commercial real estate, owner-occupied			Commercial real estate, investor			Construction			Home equity			Other residential			Installment and other consumer			Unallocated		Total
March 31, 2017
Ending ALLL related to loans collectively evaluated for impairment	$	4,385		$	1,835		$	5,759		$	540		$	980		$	444		$	261		$	342	$	14,546
Ending ALLL related to loans individually evaluated for impairment	28			157			374			6			10			—			98			—		673
Ending ALLL related to purchased credit-impaired loans	—			—			—			—			—			—			—			—		—
Ending balance	$	4,413		$	1,992		$	6,133		$	546		$	990		$	444		$	359		$	342	$	15,219
Recorded Investment:
Collectively evaluated for impairment	$	217,649		$	246,086		$	707,070		$	63,921		$	114,366		$	83,545		$	23,541		$	—	$	1,456,178
Individually evaluated for impairment	2,070			7,001			3,311			3,241			711			1,175			946			—		18,455
Purchased credit-impaired	41			1,093			1,700			—			103			—			—			—		2,937
Total	$	219,760		$	254,180		$	712,081		$	67,162		$	115,180		$	84,720		$	24,487		$	—	$	1,477,570
Ratio of allowance for loan losses to total loans	2.01		%	0.78		%	0.86		%	0.81		%	0.86		%	0.52		%	1.47		%	NM		1.03		%
Allowance for loan losses to non-accrual loans	NM			NM			570		%	NM			1,138		%	NM			690		%	NM		1,253		%

NM - Not Meaningful

Allowance for Loan Losses and Recorded Investment in Loans
(dollars in thousands)	Commercial and industrial			Commercial real estate, owner-occupied			Commercial real estate, investor			Construction			Home equity			Other residential			Installment and other consumer			Unallocated		Total
December 31, 2016
Ending ALLL related to loans collectively evaluated for impairment	$	2,963		$	1,590		$	5,945		$	773		$	966		$	399		$	274		$	1,541	$	14,451
Ending ALLL related to loans individually evaluated for impairment	285			163			375			8			7			55			98			—		991
Ending ALLL related to purchased  credit-impaired loans	—			—			—			—			—			—			—			—		—
Ending balance	$	3,248		$	1,753		$	6,320		$	781		$	973		$	454		$	372		$	1,541	$	15,442
Recorded Investment:
Collectively evaluated for impairment	$	216,368		$	239,648		$	720,266		$	71,564		$	116,390		$	76,584		$	24,563		$	—	$	1,465,383
Individually evaluated for impairment	2,207			6,993			2,256			3,245			715			1,965			932			—		18,313
Purchased credit-impaired	40			1,072			1,706			—			102			—			—			—		2,920
Total	$	218,615		$	247,713		$	724,228		$	74,809		$	117,207		$	78,549		$	25,495		$	—	$	1,486,616
Ratio of allowance for loan losses to total loans	1.49		%	0.71		%	0.87		%	1.04		%	0.83		%	0.58		%	1.46		%	NM		1.04		%
Allowance for loan losses to non-accrual loans	NM			NM			NM			NM			1,071		%	NM			683		%	NM		10,650		%

NM - Not Meaningful

Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period

The following table reflects the unpaid principal balance and related carrying value of PCI loans.

PCI Loans	March 31, 2017				December 31, 2016
(in thousands)	Unpaid Principal Balance		Carrying Value		Unpaid Principal Balance		Carrying Value
Commercial and industrial	$	42	$	41	$	45	$	40
Commercial real estate, owner occupied	1,332		1,093		1,344		1,072
Commercial real estate, investor	1,702		1,700		1,713		1,706
Home equity	247		103		248		102
Total purchased credit-impaired loans	$	3,323	$	2,937	$	3,350	$	2,920

Accretable Yield Activity

The activities in the accretable yield, or income expected to be earned over the remaining lives of the PCI loans were as follows:

Accretable Yield	Three months ended
(in thousands)	March 31, 2017			March 31, 2016
Balance at beginning of period	$	1,476		$	2,618
Additions	—			—
Removals 1	—			(778		)
Accretion	(90		)	(98		)
Reclassifications from nonaccretable difference 2	—			—
Balance at end of period	$	1,386		$	1,742

¹ Represents the accretable difference that is relieved when a loan exits the PCI population due to pay-off, full charge-off, or transfer to repossessed assets, etc.

² Primarily relates to changes in expected credit performance and changes in expected timing of cash flows.

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Borrowings (Tables)

3 Months Ended

Mar. 31, 2017

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

The following is a summary of the contractual terms of the subordinated debentures due to the Trusts as of March 31, 2017:

(in thousands)
Subordinated debentures due to NorCal Community Bancorp Trust I on October 7, 2033 with interest payable quarterly, based on 3-month LIBOR plus 3.05%, repricing quarterly (4.07% as of March 31, 2017), redeemable, in whole or in part, on any interest payment date	$	4,124
Subordinated debentures due to NorCal Community Bancorp Trust II on March 15, 2036 with interest payable quarterly, based on 3-month LIBOR plus 1.40%, repricing quarterly (2.53% as of March 31, 2017), redeemable, in whole or in part, on any interest payment date	4,124
Total	$	8,248

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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2017

Equity [Abstract]

Dividends Declared

Presented below is a summary of cash dividends paid to common shareholders, recorded as a reduction of retained earnings.

	Three months ended
(in thousands, except per share data)	March 31, 2017		March 31, 2016
Cash dividends to common stockholders	$	1,655	$	1,518
Cash dividends per common share	$	0.27	$	0.25

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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of Undrawn Loan Commitments and Standby Letters of Credit

The contractual amount of undrawn loan commitments and standby letters of credit not reflected on the consolidated statements of condition are as follows:

(in thousands)	March 31, 2017		December 31, 2016
Commercial lines of credit	$	214,491	$	216,774
Revolving home equity lines	155,234		148,143
Undisbursed construction loans	33,498		44,798
Personal and other lines of credit	10,741		10,635
Standby letters of credit	1,829		1,939
Total commitments and standby letters of credit	$	415,793	$	422,289

Schedule of Future Minimum Rental Payments for Operating Leases

At March 31, 2017, the approximate minimum future commitments payable under non-cancelable contracts for leased premises are as follows:

(in thousands)	2017		2018		2019		2020		2021		Thereafter		Total
Operating leases1	$	2,928	$	3,932	$	3,739	$	3,420	$	2,138	$	4,234	$	20,391

¹ Minimum payments have not been reduced by minimum sublease rentals of $126 thousand due in the future under non-cancelable subleases.

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Derivative Financial Instruments and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

Information on our derivatives follows:

	Asset derivatives				Liability derivatives
(in thousands)	March 31, 2017		December 31, 2016		March 31, 2017		December 31, 2016
Fair value hedges:
Interest rate contracts notional amount	$	4,168	$	4,217	$	15,324	$	15,495
Interest rate contracts fair value1	$	70	$	55	$	837	$	933

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance

	Three months ended
(in thousands)	March 31, 2017			March 31, 2016
Increase (decrease) in value of designated interest rate swaps due to LIBOR interest rate movements recognized in interest income	$	111		$	(876	)
Payment on interest rate swaps recorded in interest income	(98		)	(174		)
(Decrease) increase in value of hedged loans recognized in interest income	(113		)	1,050
Decrease in value of yield maintenance agreement recognized against interest income	(4		)	(12		)
Net loss on derivatives recognized against interest income 2	$	(104	)	$	(12	)

¹ See Note 3, Fair Value of Assets and Liabilities, for valuation methodology.

² Includes hedge ineffectiveness loss of $6 thousand and gain of $162 thousand for the quarters ended March 31, 2017 and March 31, 2016, respectively. Changes in value of swaps were included in the assessment of hedge effectiveness. Hedge ineffectiveness is the measure of the extent to which the change in the fair value of the hedging instruments does not exactly offset the change in the fair value of the hedged items from period to period.

Offsetting Assets

Information on financial instruments that are eligible for offset in the consolidated statements of condition follows:

Offsetting of Financial Assets and Derivative Assets
			Gross Amounts		Net Amounts of		Gross Amounts Not Offset in
	Gross Amounts		Offset in the		Assets Presented		the Statements of Condition
	of Recognized		Statements of		in the Statements		Financial			Cash Collateral
(in thousands)	Assets1		Condition		of Condition1		Instruments			Received		Net Amount
March 31, 2017
Derivatives by Counterparty:
Counterparty A	$	70	$	—	$	70	$	(70	)	$	—	$	—
December 31, 2016
Derivatives by Counterparty:
Counterparty A	$	55	$	—	$	55	$	(55	)	$	—	$	—

¹Amounts exclude accrued interest totaling $1 thousand at both March 31, 2017 and December 31, 2016, respectively.

Offsetting of Financial Liabilities and Derivative Liabilities
			Gross Amounts		Net Amounts of		Gross Amounts Not Offset in
	Gross Amounts		Offset in the		Liabilities Presented		the Statements of Condition
	of Recognized		Statements of		in the Statements		Financial			Cash Collateral
(in thousands)	Liabilities2		Condition		of Condition2		Instruments			Pledged			Net Amount
March 31, 2017
Derivatives by Counterparty:
Counterparty A	$	837	$	—	$	837	$	(70	)	$	(767	)	$	—
December 31, 2016
Derivatives by Counterparty:
Counterparty A	$	933	$	—	$	933	$	(55	)	$	(878	)	$	—

Offsetting Liabilities

Offsetting of Financial Liabilities and Derivative Liabilities
			Gross Amounts		Net Amounts of		Gross Amounts Not Offset in
	Gross Amounts		Offset in the		Liabilities Presented		the Statements of Condition
	of Recognized		Statements of		in the Statements		Financial			Cash Collateral
(in thousands)	Liabilities2		Condition		of Condition2		Instruments			Pledged			Net Amount
March 31, 2017
Derivatives by Counterparty:
Counterparty A	$	837	$	—	$	837	$	(70	)	$	(767	)	$	—
December 31, 2016
Derivatives by Counterparty:
Counterparty A	$	933	$	—	$	933	$	(55	)	$	(878	)	$	—

² Amounts exclude accrued interest totaling $11 thousand and $12 thousand at March 31, 2017 and December 31, 2016, respectively.

For more information on how we account for our interest rate swaps, refer to Note 1 to the Consolidated Financial Statements included in our 2016 Form 10-K filed with the SEC on March 14, 2017.

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Basis of Presentation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Weighted average basic shares outstanding (shares)	6,092	6,048
Add: Potentially dilutive common shares related to stock options (shares)	62	35
Potential common shares related to unvested restricted stock (shares)	18	7
Weighted average diluted shares outstanding (shares)	6,172	6,090
Net income	$ 4,548	$ 5,646	$ 23,134
Basic EPS (usd per share)	$ 0.75	$ 0.93
Diluted EPS (usd per share)	$ 0.74	$ 0.93
Weighted average anti-dilutive shares not included in the calculation of diluted EPS (in shares)	13	48

XML

Recently Issued Accounting Standards (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Excess tax benefits recognized recorded as a reduction to income tax expense	$ 133
Undiscounted operating lease obligations, off-balance sheet	$ 20,391

XML

Fair Value of Assets and Liabilities - Recorded on a Recurring Basis (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) security	Dec. 31, 2016 USD ($) security
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	$ 241,684	$ 372,580
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of securities | security	0	0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of securities | security	1
Debentures of government sponsored agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	$ 35,386	$ 35,403
Privately-issued collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	305	419
Obligations of state and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	77,843	77,701
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	5,029	5,016
U.S. government agency obligation collateralized by loans guaranteed by SBA program
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Increase in unrealized gain (loss) due to transfers to Level 3	2
Assets and liabilities at fair value measured on a recurring basis | Carrying Value | Interest rate contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial assets (interest rate contracts)	70	55
Derivative financial liabilities (interest rate contracts)	837	933
Assets and liabilities at fair value measured on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial assets (interest rate contracts)	0	0
Derivative financial liabilities (interest rate contracts)	0	0
Assets and liabilities at fair value measured on a recurring basis | Significant Other Observable Inputs (Level 2) | Interest rate contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial assets (interest rate contracts)	70	55
Derivative financial liabilities (interest rate contracts)	837	933
Assets and liabilities at fair value measured on a recurring basis | Significant Unobservable Inputs (Level 3) | Interest rate contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial assets (interest rate contracts)	0	0
Derivative financial liabilities (interest rate contracts)	0	0
Assets and liabilities at fair value measured on a recurring basis | Mortgage-backed securities and collateralized mortgage obligations issued by U.S. government agencies | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	123,121	254,041
Assets and liabilities at fair value measured on a recurring basis | Mortgage-backed securities and collateralized mortgage obligations issued by U.S. government agencies | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	0	0
Assets and liabilities at fair value measured on a recurring basis | Mortgage-backed securities and collateralized mortgage obligations issued by U.S. government agencies | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	122,531	253,434
Assets and liabilities at fair value measured on a recurring basis | Mortgage-backed securities and collateralized mortgage obligations issued by U.S. government agencies | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	590	607
Assets and liabilities at fair value measured on a recurring basis | Debentures of government sponsored agencies | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	35,386	35,403
Assets and liabilities at fair value measured on a recurring basis | Debentures of government sponsored agencies | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	0	0
Assets and liabilities at fair value measured on a recurring basis | Debentures of government sponsored agencies | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	35,386	35,403
Assets and liabilities at fair value measured on a recurring basis | Debentures of government sponsored agencies | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	0	0
Assets and liabilities at fair value measured on a recurring basis | Privately-issued collateralized mortgage obligations | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	305	419
Assets and liabilities at fair value measured on a recurring basis | Privately-issued collateralized mortgage obligations | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	0	0
Assets and liabilities at fair value measured on a recurring basis | Privately-issued collateralized mortgage obligations | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	305	419
Assets and liabilities at fair value measured on a recurring basis | Privately-issued collateralized mortgage obligations | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	0	0
Assets and liabilities at fair value measured on a recurring basis | Obligations of state and political subdivisions | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	77,843	77,701
Assets and liabilities at fair value measured on a recurring basis | Obligations of state and political subdivisions | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	0	0
Assets and liabilities at fair value measured on a recurring basis | Obligations of state and political subdivisions | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	77,843	77,701
Assets and liabilities at fair value measured on a recurring basis | Obligations of state and political subdivisions | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	0	0
Assets and liabilities at fair value measured on a recurring basis | Corporate bonds | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	5,029	5,016
Assets and liabilities at fair value measured on a recurring basis | Corporate bonds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	0	0
Assets and liabilities at fair value measured on a recurring basis | Corporate bonds | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	5,029	5,016
Assets and liabilities at fair value measured on a recurring basis | Corporate bonds | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, Fair Value	$ 0	$ 0

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Fair Value of Assets and Liabilities - Recorded on Nonrecurring Basis (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate for selling costs applied to all properties	6.00%
Changed in estimated value of OREO		$ 0
Financial instruments at fair value measured on a nonrecurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 0		$ 0
Financial instruments at fair value measured on a nonrecurring basis | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	0		0
Financial instruments at fair value measured on a nonrecurring basis | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	238,000		408,000
Financial instruments at fair value measured on a nonrecurring basis | Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 238,000		$ 408,000

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Fair Value of Assets and Liabilities - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Investment securities held to maturity	$ 172,421	$ 45,097
Subordinated debenture
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Subordinated debentures	$ 4,950
NorCal Community Bancorp Trust I | Subordinated debenture
Subordinated Debt [Abstract]
Basis spread on subordinated debentures	3.05%
NorCal Community Bancorp Trust II | Subordinated debenture
Subordinated Debt [Abstract]
Basis spread on subordinated debentures	1.40%
Carrying Value | Fair Value Hierarchy, Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash and cash equivalents	$ 73,162	48,804
Carrying Value | Fair Value Hierarchy, Level 2
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Investment securities held to maturity	172,272	44,438
Interest receivable	5,721	6,319
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Deposits	1,779,269	1,772,700
Interest payable	131	134
Carrying Value | Fair Value Hierarchy, Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Loans, net	1,462,351	1,471,174
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Subordinated debentures	5,628	5,586
Fair Value | Fair Value Hierarchy, Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash and cash equivalents	73,162	48,804
Fair Value | Fair Value Hierarchy, Level 2
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Investment securities held to maturity	172,421	45,097
Interest receivable	5,721	6,319
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Deposits	1,779,533	1,773,102
Interest payable	131	134
Fair Value | Fair Value Hierarchy, Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Loans, net	1,444,456	1,473,360
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract]
Subordinated debentures	$ 5,162	$ 5,083

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Investment Securities - Amortized Cost and Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Held to maturity, Amortized Cost	$ 172,272	$ 44,438
Held to maturity, Fair Value	172,421	45,097
Held-to-maturity, Gross Unrealized Gains	828	820
Held-to-maturity, Gross Unrealized Losses	(679)	(161)
Available-for-sale, Amortized Cost	242,650	378,254
Available-for-sale, Fair Value	241,684	372,580
Available-for-sale, Gross Unrealized Gains	831	575
Available-for-sale, Gross Unrealized Losses	(1,797)	(6,249)
Total investment securities, Amortized Cost	414,922	422,692
Total investment securities, Fair Value	414,105	417,677
Total investment securities, Gross Unrealized Gains	1,659	1,395
Total investment securities, Gross Unrealized Losses	(2,476)	(6,410)
MBS pass-through securities issued by FHLMC and FNMA
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available-for-sale, Amortized Cost	93,676	193,998
Available-for-sale, Fair Value	93,719	190,566
Available-for-sale, Gross Unrealized Gains	328	145
Available-for-sale, Gross Unrealized Losses	(285)	(3,577)
CMOs issued by FNMA
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available-for-sale, Amortized Cost	12,897	13,790
Available-for-sale, Fair Value	12,874	13,772
Available-for-sale, Gross Unrealized Gains	84	91
Available-for-sale, Gross Unrealized Losses	(107)	(109)
CMOs issued by FHLMC
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available-for-sale, Amortized Cost	10,237	43,452
Available-for-sale, Fair Value	10,260	42,758
Available-for-sale, Gross Unrealized Gains	25	37
Available-for-sale, Gross Unrealized Losses	(2)	(731)
CMOs issued by GNMA
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available-for-sale, Amortized Cost	6,181	6,844
Available-for-sale, Fair Value	6,268	6,945
Available-for-sale, Gross Unrealized Gains	87	102
Available-for-sale, Gross Unrealized Losses	0	(1)
Debentures of government sponsored agencies
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available-for-sale, Amortized Cost	35,488	35,486
Available-for-sale, Fair Value	35,386	35,403
Available-for-sale, Gross Unrealized Gains	2	7
Available-for-sale, Gross Unrealized Losses	(104)	(90)
Privately issued CMOs
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available-for-sale, Amortized Cost	305	419
Available-for-sale, Fair Value	305	419
Available-for-sale, Gross Unrealized Gains	0	1
Available-for-sale, Gross Unrealized Losses	0	(1)
Obligations of state and political subdivisions
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available-for-sale, Amortized Cost	78,905	79,306
Available-for-sale, Fair Value	77,843	77,701
Available-for-sale, Gross Unrealized Gains	237	135
Available-for-sale, Gross Unrealized Losses	(1,299)	(1,740)
Corporate bonds
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available-for-sale, Amortized Cost	4,961	4,959
Available-for-sale, Fair Value	5,029	5,016
Available-for-sale, Gross Unrealized Gains	68	57
Available-for-sale, Gross Unrealized Losses	0	0
Obligations of state and political subdivisions
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Held to maturity, Amortized Cost	27,741	30,856
Held to maturity, Fair Value	28,407	31,544
Held-to-maturity, Gross Unrealized Gains	669	694
Held-to-maturity, Gross Unrealized Losses	(3)	(6)
Corporate bonds
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Held to maturity, Amortized Cost	3,514	3,519
Held to maturity, Fair Value	3,511	3,518
Held-to-maturity, Gross Unrealized Gains	0	0
Held-to-maturity, Gross Unrealized Losses	(3)	(1)
MBS pass-through securities issued by FHLMC and FNMA
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Held to maturity, Amortized Cost	109,357	10,063
Held to maturity, Fair Value	108,843	10,035
Held-to-maturity, Gross Unrealized Gains	109	126
Held-to-maturity, Gross Unrealized Losses	(623)	(154)
CMOs issued by FHLMC
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Held to maturity, Amortized Cost	31,660	0
Held to maturity, Fair Value	31,660	0
Held-to-maturity, Gross Unrealized Gains	50	0
Held-to-maturity, Gross Unrealized Losses	$ (50)	$ 0

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Investment Securities - Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Held to Maturity, Amortized Cost, Within one year	$ 10,401	$ 13,473
Held to Maturity, Amortized Cost, After one but within five years	16,665	16,706
Held to Maturity, Amortized Cost, After five years through ten years	43,964	3,000
Held to Maturity, Amortized Cost, After ten years	101,242	11,259
Held to Maturity, Amortized Cost, Total	172,272	44,438
Available for Sale Securities, Amortized Cost, Within one year	21,417	20,136
Available for Sale, Amortized Cost, After one but within five years	57,185	58,334
Available for Sale, Amortized Cost, After five years through ten years	80,507	113,576
Available for Sale, Amortized Cost, After ten years	83,541	186,208
Available for Sale, Amortized Cost, Total	242,650	378,254
Held to Maturity, Fair Value, Within one year	10,424	13,506
Held to Maturity, Fair Value, After one but within five years	17,098	17,150
Held to Maturity, Fair Value, After five years through ten years	44,082	3,125
Held to Maturity, Fair Value, After ten years	100,817	11,316
Held to maturity, Fair Value	172,421	45,097
Available for Sale, Fair Value, Within one year	21,386	20,109
Available for Sale, Fair Value, After one but within five years	57,200	58,267
Available for Sale, Fair Value, After five years through ten years	79,224	110,842
Available for Sale, Fair Value, After ten years	83,874	183,362
Available for Sale, Fair Value, Total	$ 241,684	$ 372,580

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Investment Securities - Securities Sold, Pledged as Collateral and Transfers (Details) - USD ($) $ in Thousands		3 Months Ended
	Feb. 24, 2017	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Held-to-maturity Securities, Sales, Excluding Other than Temporary Impairments [Abstract]
Sales proceeds		$ 0	$ 54,985
Gross realized gains		0	110
Gross realized losses		0	0
Available-for-sale:
Securities transferred from available-for-sale to held-to-maturity	$ 129,000	128,965	$ 0
Unrealized pre-tax loss from transfer of available-for-sale securities to held-to-maturity	$ 3,000
State of California
Available-for-sale:
Available-for-sale securities pledged as collateral		103,600		$ 109,100
Public Deposits
Available-for-sale:
Available-for-sale securities pledged as collateral		102,800		108,300
Trust Deposits
Available-for-sale:
Available-for-sale securities pledged as collateral		819		$ 822
Internal checking account
Available-for-sale:
Available-for-sale securities pledged as collateral		$ 2,100

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Investment Securities - Investment Securities in Unrealized Loss Positions (Details) $ in Thousands	Mar. 31, 2017 USD ($) security	Dec. 31, 2016 USD ($) security
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Number of investment securities other-than-temporarily impaired | security	0
Number of investment securities in unrealized loss position | security	106	134
Held-to-maturity, less than 12 continuous months, Fair value	$ 109,630	$ 9,130
Held-to-maturity, less than 12 continuous months, Unrealized loss	(677)	(161)
Held-to-maturity, greater than 12 continuous months, Fair value	545	0
Held-to-maturity, greater than 12 continuous months, Unrealized loss	(2)	0
Held-to-maturity, Total Securities in a loss position, Fair value	110,175	9,130
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(679)	(161)
Held-to-maturity, Gross Unrealized Losses	(679)	(161)
Available-for-sale, less than 12 continuous months, Fair value	123,229	284,314
Available-for-sale, less than 12 continuous months, Unrealized loss	(1,743)	(6,197)
Available-for-sale, greater than 12 continuous months, Fair value	9,945	9,946
Available-for-sale, greater than 12 continuous months, Unrealized loss	(54)	(52)
Available-for-sale, Total Securities in a loss position, Fair Value	133,174	294,260
Available-for-sale, Total Securities in a loss position, Unrealized loss	(1,797)	(6,249)
Marketable securities, less than 12 continuous months, Fair value	232,859	293,444
Marketable securities, less than 12 continuous months, Unrealized loss	(2,420)	(6,358)
Marketable securities, greater than 12 continuous months, Fair value	10,490	9,946
Marketable securities, greater than 12 continuous months, Unrealized loss	(56)	(52)
Marketable securities, Total Securities in a loss position, Fair value	243,349	303,390
Marketable securities, Total Securities in a loss position, Unrealized loss	$ (2,476)	(6,410)
Number of investment securities in unrealized loss position less than 12 months | security	104
MBS pass-through securities issued by FHLMC and FNMA
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available-for-sale, less than 12 continuous months, Fair value	$ 45,048	162,016
Available-for-sale, less than 12 continuous months, Unrealized loss	(285)	(3,577)
Available-for-sale, greater than 12 continuous months, Fair value	0	0
Available-for-sale, greater than 12 continuous months, Unrealized loss	0	0
Available-for-sale, Total Securities in a loss position, Fair Value	45,048	162,016
Available-for-sale, Total Securities in a loss position, Unrealized loss	$ (285)	(3,577)
Number of investment securities in unrealized loss position less than 12 months | security	28
CMOs issued by FNMA
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available-for-sale, less than 12 continuous months, Fair value	$ 8,866	9,498
Available-for-sale, less than 12 continuous months, Unrealized loss	(107)	(109)
Available-for-sale, greater than 12 continuous months, Fair value	0	0
Available-for-sale, greater than 12 continuous months, Unrealized loss	0	0
Available-for-sale, Total Securities in a loss position, Fair Value	8,866	9,498
Available-for-sale, Total Securities in a loss position, Unrealized loss	(107)	(109)
CMOs issued by FHLMC
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available-for-sale, less than 12 continuous months, Fair value	6,553	31,545
Available-for-sale, less than 12 continuous months, Unrealized loss	(2)	(731)
Available-for-sale, greater than 12 continuous months, Fair value	0	0
Available-for-sale, greater than 12 continuous months, Unrealized loss	0	0
Available-for-sale, Total Securities in a loss position, Fair Value	6,553	31,545
Available-for-sale, Total Securities in a loss position, Unrealized loss	$ (2)	(731)
CMOs issued by GNMA
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available-for-sale, less than 12 continuous months, Fair value		1,583
Available-for-sale, less than 12 continuous months, Unrealized loss		(1)
Available-for-sale, greater than 12 continuous months, Fair value		0
Available-for-sale, greater than 12 continuous months, Unrealized loss		0
Available-for-sale, Total Securities in a loss position, Fair Value		1,583
Available-for-sale, Total Securities in a loss position, Unrealized loss		(1)
Debentures of government- sponsored agencies
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Marketable Securities In Unrealized Loss Positions, Qualitative Disclosure, Number Of Positions, Longer Than 12 Months | security	1
Available-for-sale, less than 12 continuous months, Fair value	$ 19,940	19,951
Available-for-sale, less than 12 continuous months, Unrealized loss	(50)	(38)
Available-for-sale, greater than 12 continuous months, Fair value	9,945	9,946
Available-for-sale, greater than 12 continuous months, Unrealized loss	(54)	(52)
Available-for-sale, Total Securities in a loss position, Fair Value	29,885	29,897
Available-for-sale, Total Securities in a loss position, Unrealized loss	$ (104)	(90)
Number of investment securities in unrealized loss position less than 12 months | security	1
Privately issued CMOs
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Number of investment securities in unrealized loss position less than 12 months | security	8
Obligations of state and political subdivisions
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Marketable Securities In Unrealized Loss Positions, Qualitative Disclosure, Number Of Positions, Longer Than 12 Months | security	1
Available-for-sale, less than 12 continuous months, Fair value	$ 41,822	59,567
Available-for-sale, less than 12 continuous months, Unrealized loss	(1,299)	(1,740)
Available-for-sale, greater than 12 continuous months, Fair value	0	0
Available-for-sale, greater than 12 continuous months, Unrealized loss	0	0
Available-for-sale, Total Securities in a loss position, Fair Value	41,822	59,567
Available-for-sale, Total Securities in a loss position, Unrealized loss	$ (1,299)	(1,740)
Number of investment securities in unrealized loss position less than 12 months | security	65
Corporate bonds
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available-for-sale, less than 12 continuous months, Fair value	$ 1,000	154
Available-for-sale, less than 12 continuous months, Unrealized loss	0	(1)
Available-for-sale, greater than 12 continuous months, Fair value	0	0
Available-for-sale, greater than 12 continuous months, Unrealized loss	0	0
Available-for-sale, Total Securities in a loss position, Fair Value	1,000	154
Available-for-sale, Total Securities in a loss position, Unrealized loss	$ 0	(1)
Number of investment securities in unrealized loss position less than 12 months | security	2
Obligations of state and political subdivisions
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Held-to-maturity, less than 12 continuous months, Fair value	$ 1,493	2,250
Held-to-maturity, less than 12 continuous months, Unrealized loss	(1)	(154)
Held-to-maturity, greater than 12 continuous months, Fair value	545	0
Held-to-maturity, greater than 12 continuous months, Unrealized loss	(2)	0
Held-to-maturity, Total Securities in a loss position, Fair value	2,038	2,250
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(3)	(6)
Held-to-maturity, Gross Unrealized Losses	(3)	(154)
Corporate bonds
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Held-to-maturity, less than 12 continuous months, Fair value	3,512	3,362
Held-to-maturity, less than 12 continuous months, Unrealized loss	(3)	(6)
Held-to-maturity, greater than 12 continuous months, Fair value	0	0
Held-to-maturity, greater than 12 continuous months, Unrealized loss	0	0
Held-to-maturity, Total Securities in a loss position, Fair value	3,512	3,362
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(3)	(1)
Held-to-maturity, Gross Unrealized Losses	(3)	(6)
MBS pass-through securities issued by FHLMC and FNMA
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Held-to-maturity, less than 12 continuous months, Fair value	93,021	3,518
Held-to-maturity, less than 12 continuous months, Unrealized loss	(623)	(1)
Held-to-maturity, greater than 12 continuous months, Fair value	0	0
Held-to-maturity, greater than 12 continuous months, Unrealized loss	0	0
Held-to-maturity, Total Securities in a loss position, Fair value	93,021	3,518
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(623)	(154)
Held-to-maturity, Gross Unrealized Losses		(1)
CMOs issued by FHLMC
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Held-to-maturity, less than 12 continuous months, Fair value	11,604
Held-to-maturity, less than 12 continuous months, Unrealized loss	(50)
Held-to-maturity, greater than 12 continuous months, Fair value	0
Held-to-maturity, greater than 12 continuous months, Unrealized loss	0
Held-to-maturity, Total Securities in a loss position, Fair value	11,604
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	$ (50)	$ 0

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Investment Securities - Non-Marketable Securities (Details)	3 Months Ended
	Mar. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 USD ($)	Jul. 28, 2016
Schedule of Cost-method Investments [Line Items]
Federal Home Loan Bank stock, par value (usd per share) | $ / shares	$ 100
Federal Home Loan Bank, dividend rate percentage			7.00%
Investments in low income housing tax credit funds	$ 2,400,000	$ 2,500,000
Low income housing tax credits and other tax benefits	87,000
Low income housing amortization expense	70,000
Unfunded commitments for low income housing tax credit funds	$ 1,100,000
Visa Inc. Class B common stock
Schedule of Cost-method Investments [Line Items]
Number of shares of securities carried at cost | shares	16,939
Carrying value of securities carried at cost	$ 0
Fair value of Class B common stock	$ 2,500,000	$ 2,200,000
Visa Inc. | Visa Inc. Class B common stock
Schedule of Cost-method Investments [Line Items]
Conversion rate on common stock	1.6483
Other assets
Schedule of Cost-method Investments [Line Items]
Federal Home Loan Bank stock	$ 10,200,000

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Loans and Allowance for Loan Losses - Loans Outstanding and Aging Analysis (Details) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	$ 1,910,000	$ 502,000
Current	1,475,660,000	1,486,114,000
Total loans	1,477,570,000	1,486,616,000
Purchased Credit-impaired (PCI) loans accreting interest	2,900,000
Loans past due more than 90 days still accruing	0	0
Deferred loan fees	808,000	883,000
Non-accrual	1,215,000	145,000
Unaccreted purchase discounts on non-PCI loans	1,600,000	1,800,000
30-59 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	834,000	362,000
60-89 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	1,076,000	49,000
90 days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	91,000
Commercial loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	600,000	283,000
Current	219,160,000	218,332,000
Total loans	219,760,000	218,615,000
Non-accrual	0	0
Commercial loans | Commercial and industrial | 30-59 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	600,000	283,000
Commercial loans | Commercial and industrial | 60-89 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	0
Commercial loans | Commercial and industrial | 90 days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	0
Commercial real estate loans | Commercial real estate, owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	133,000	0
Current	254,047,000	247,713,000
Total loans	254,180,000	247,713,000
Non-accrual	0	0
Commercial real estate loans | Commercial real estate, owner-occupied | 30-59 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	133,000	0
Commercial real estate loans | Commercial real estate, owner-occupied | 60-89 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	0
Commercial real estate loans | Commercial real estate, owner-occupied | 90 days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	0
Commercial real estate loans | Commercial real estate, investor
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	1,076,000	0
Current	711,005,000	724,228,000
Total loans	712,081,000	724,228,000
Non-accrual	1,076,000	0
Commercial real estate loans | Commercial real estate, investor | 30-59 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	0
Commercial real estate loans | Commercial real estate, investor | 60-89 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	1,076,000	0
Commercial real estate loans | Commercial real estate, investor | 90 days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	0
Commercial real estate loans | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	0
Current	67,162,000	74,809,000
Total loans	67,162,000	74,809,000
Non-accrual	0	0
Commercial real estate loans | Construction | 30-59 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	0
Commercial real estate loans | Construction | 60-89 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	0
Commercial real estate loans | Construction | 90 days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	0
Residential loans | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	77,000	168,000
Current	115,103,000	117,039,000
Total loans	115,180,000	117,207,000
Non-accrual	87,000	91,000
Residential loans | Home equity | 30-59 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	77,000	77,000
Residential loans | Home equity | 60-89 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	0
Residential loans | Home equity | 90 days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	91,000
Residential loans | Other residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	0
Current	84,720,000	78,549,000
Total loans	84,720,000	78,549,000
Non-accrual	0	0
Residential loans | Other residential | 30-59 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	0
Residential loans | Other residential | 60-89 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	0
Residential loans | Other residential | 90 days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	0
Consumer loans | Installment and other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	24,000	51,000
Current	24,463,000	25,444,000
Total loans	24,487,000	25,495,000
Non-accrual	52,000	54,000
Consumer loans | Installment and other consumer | 30-59 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	24,000	2,000
Consumer loans | Installment and other consumer | 60-89 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	0	49,000
Consumer loans | Installment and other consumer | 90 days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due	$ 0	$ 0

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Loans and Allowance for Loan Losses - Credit Quality of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 1,477,570	$ 1,486,616
Purchase credit-impaired
Financing Receivable, Recorded Investment [Line Items]
Purchase credit-impaired	2,937	2,920
Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,437,964	1,451,049
Pass | Purchase credit-impaired
Financing Receivable, Recorded Investment [Line Items]
Purchase credit-impaired	2,937	2,920
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	9,376	15,937
Special Mention | Purchase credit-impaired
Financing Receivable, Recorded Investment [Line Items]
Purchase credit-impaired	0	0
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	30,230	19,630
Substandard | Purchase credit-impaired
Financing Receivable, Recorded Investment [Line Items]
Purchase credit-impaired	0	0
Commercial loans | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	219,719	218,575
Total loans	219,760	218,615
Commercial loans | Commercial and industrial | Purchase credit-impaired
Financing Receivable, Recorded Investment [Line Items]
Purchase credit-impaired	41	40
Commercial loans | Commercial and industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	201,777	201,987
Commercial loans | Commercial and industrial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	4,554	9,197
Commercial loans | Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	13,388	7,391
Commercial real estate loans | Commercial real estate, owner-occupied
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	253,087	246,641
Total loans	254,180	247,713
Commercial real estate loans | Commercial real estate, owner-occupied | Purchase credit-impaired
Financing Receivable, Recorded Investment [Line Items]
Purchase credit-impaired	1,093	1,072
Commercial real estate loans | Commercial real estate, owner-occupied | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	239,437	234,849
Commercial real estate loans | Commercial real estate, owner-occupied | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	4,573	4,799
Commercial real estate loans | Commercial real estate, owner-occupied | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	9,077	6,993
Commercial real estate loans | Commercial real estate, investor
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	710,381	722,522
Total loans	712,081	724,228
Commercial real estate loans | Commercial real estate, investor | Purchase credit-impaired
Financing Receivable, Recorded Investment [Line Items]
Purchase credit-impaired	1,700	1,706
Commercial real estate loans | Commercial real estate, investor | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	707,223	720,417
Commercial real estate loans | Commercial real estate, investor | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	249	607
Commercial real estate loans | Commercial real estate, investor | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	2,909	1,498
Commercial real estate loans | Construction
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	67,162	74,809
Total loans	67,162	74,809
Commercial real estate loans | Construction | Purchase credit-impaired
Financing Receivable, Recorded Investment [Line Items]
Purchase credit-impaired	0	0
Commercial real estate loans | Construction | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	63,921	71,564
Commercial real estate loans | Construction | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	0	0
Commercial real estate loans | Construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	3,241	3,245
Residential loans | Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	115,077	117,105
Total loans	115,180	117,207
Residential loans | Home equity | Purchase credit-impaired
Financing Receivable, Recorded Investment [Line Items]
Purchase credit-impaired	103	102
Residential loans | Home equity | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	113,868	115,680
Residential loans | Home equity | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	0	1,334
Residential loans | Home equity | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans excluding purchased credit-impaired loans	1,209	91
Residential loans | Other residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	84,720	78,549
Residential loans | Other residential | Purchase credit-impaired
Financing Receivable, Recorded Investment [Line Items]
Purchase credit-impaired	0	0
Residential loans | Other residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	84,720	78,549
Residential loans | Other residential | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Residential loans | Other residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer loans | Installment and other consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	24,487	25,495
Consumer loans | Installment and other consumer | Purchase credit-impaired
Financing Receivable, Recorded Investment [Line Items]
Purchase credit-impaired	0	0
Consumer loans | Installment and other consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	24,081	25,083
Consumer loans | Installment and other consumer | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer loans | Installment and other consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 406	$ 412

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Loans and Allowance for Loan Losses - Troubled Debt Restructuring by Class (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2017 USD ($) loans	Dec. 31, 2016 USD ($) loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans removed from TDR designation | loans	0	0
Recorded investment in Troubled Debt Restructurings	$ 17,240,000	$ 18,168,000
Accruing TDR loans	0	0
TDR loans acquired		0
Commercial loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in Troubled Debt Restructurings	2,070,000	2,207,000
Commercial real estate loans | Commercial real estate, owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in Troubled Debt Restructurings	7,001,000	6,993,000
Commercial real estate loans | Commercial real estate, investor
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in Troubled Debt Restructurings	2,235,000	2,256,000
Commercial real estate loans | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in Troubled Debt Restructurings	3,241,000	3,245,000
Residential loans | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in Troubled Debt Restructurings	623,000	625,000
Residential loans | Other residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in Troubled Debt Restructurings	1,175,000	1,965,000
Consumer loans | Installment and other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Recorded investment in Troubled Debt Restructurings	$ 895,000	$ 877,000

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Loans and Allowance for Loan Losses - Troubled Debt Restructuring Modifications (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) loans contract	Mar. 31, 2016 USD ($) loans contract
Receivables [Abstract]
Number of Contracts Modified | contract	1	1
Pre-Modification Outstanding Recorded Investment	$ 50	$ 1,549
Post-Modification Outstanding Recorded Investment	50	1,546
Post-Modification Outstanding Recorded Investment at Period End	$ 50	$ 1,541
Number of modified TDR loans that defaulted | loans	0	0

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Loans and Allowance for Loan Losses - Impaired Loans and Related Allowance (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Recorded investment in impaired loans:
With no specific allowance recorded	$ 5,442,000		$ 4,209,000
With a specific allowance recorded	13,013,000		14,104,000
Total recorded investment in impaired loans	18,455,000		18,313,000
Unpaid principal balance of impaired loans:
Total unpaid principal balance of impaired loans	18,436,000		18,270,000
Specific valuation	673,000		991,000
Average recorded investment in impaired loans during the period	18,384,000	$ 21,754,000
Interest income recognized on impaired loans during the period ended	183,000	217,000
Interest income recognized on impaired loans during the period ended, cash basis		0
Outstanding commitments to extend credit on impaired loans	1,300,000		1,600,000
Commercial loans | Commercial and industrial
Recorded investment in impaired loans:
With no specific allowance recorded	314,000		315,000
With a specific allowance recorded	1,756,000		1,892,000
Total recorded investment in impaired loans	2,070,000		2,207,000
Unpaid principal balance of impaired loans:
Total unpaid principal balance of impaired loans	2,054,000		2,177,000
Specific valuation	28,000		285,000
Average recorded investment in impaired loans during the period	2,138,000	4,283,000
Interest income recognized on impaired loans during the period ended	23,000	57,000
Commercial real estate loans | Commercial real estate, owner-occupied
Recorded investment in impaired loans:
With no specific allowance recorded	0		0
With a specific allowance recorded	7,001,000		6,993,000
Total recorded investment in impaired loans	7,001,000		6,993,000
Unpaid principal balance of impaired loans:
Total unpaid principal balance of impaired loans	6,993,000		6,993,000
Specific valuation	157,000		163,000
Average recorded investment in impaired loans during the period	6,997,000	6,993,000
Interest income recognized on impaired loans during the period ended	66,000	66,000
Commercial real estate loans | Commercial real estate, investor
Recorded investment in impaired loans:
With no specific allowance recorded	1,076,000		0
With a specific allowance recorded	2,235,000		2,256,000
Total recorded investment in impaired loans	3,311,000		2,256,000
Unpaid principal balance of impaired loans:
Total unpaid principal balance of impaired loans	3,323,000		2,252,000
Specific valuation	374,000		375,000
Average recorded investment in impaired loans during the period	2,783,000	3,129,000
Interest income recognized on impaired loans during the period ended	23,000	16,000
Commercial real estate loans | Construction
Recorded investment in impaired loans:
With no specific allowance recorded	2,690,000		2,692,000
With a specific allowance recorded	551,000		553,000
Total recorded investment in impaired loans	3,241,000		3,245,000
Unpaid principal balance of impaired loans:
Total unpaid principal balance of impaired loans	3,238,000		3,238,000
Specific valuation	6,000		8,000
Average recorded investment in impaired loans during the period	3,243,000	3,238,000
Interest income recognized on impaired loans during the period ended	34,000	38,000
Residential loans | Home equity
Recorded investment in impaired loans:
With no specific allowance recorded	88,000		91,000
With a specific allowance recorded	623,000		624,000
Total recorded investment in impaired loans	711,000		715,000
Unpaid principal balance of impaired loans:
Total unpaid principal balance of impaired loans	708,000		713,000
Specific valuation	10,000		7,000
Average recorded investment in impaired loans during the period	713,000	868,000
Interest income recognized on impaired loans during the period ended	8,000	4,000
Residential loans | Other residential
Recorded investment in impaired loans:
With no specific allowance recorded	1,175,000		1,008,000
With a specific allowance recorded	0		957,000
Total recorded investment in impaired loans	1,175,000		1,965,000
Unpaid principal balance of impaired loans:
Total unpaid principal balance of impaired loans	1,174,000		1,965,000
Specific valuation	0		55,000
Average recorded investment in impaired loans during the period	1,571,000	2,004,000
Interest income recognized on impaired loans during the period ended	19,000	23,000
Consumer loans | Installment and other consumer
Recorded investment in impaired loans:
With no specific allowance recorded	99,000		103,000
With a specific allowance recorded	847,000		829,000
Total recorded investment in impaired loans	946,000		932,000
Unpaid principal balance of impaired loans:
Total unpaid principal balance of impaired loans	946,000		932,000
Specific valuation	98,000		$ 98,000
Average recorded investment in impaired loans during the period	939,000	1,239,000
Interest income recognized on impaired loans during the period ended	$ 10,000	$ 13,000

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Loans and Allowance for Loan Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 15,442	$ 14,999
Provision for loan losses	0	0
Charge-offs	(287)	(9)
Recoveries	64	38
Ending balance	15,219	15,028
Ending ALLL related to loans collectively evaluated for impairment	14,546		$ 14,451
Ending ALLL related to loans individually evaluated for impairment	673		991
Ending ALLL related to purchased credit-impaired loans	15,219		15,442
Collectively evaluated for impairment	1,456,178		1,465,383
Individually evaluated for impairment	18,455		18,313
Total loans	$ 1,477,570		$ 1,486,616
Ratio of allowance for loan losses to total loans	1.03%		1.04%
Allowance for loan losses to non-accrual loans	1253.00%		10650.00%
Purchase credit-impaired
Allowance for Loan and Lease Losses [Roll Forward]
Ending ALLL related to purchased credit-impaired loans	$ 0		$ 0
Purchase credit-impaired	2,937		2,920
Commercial loans | Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,248	3,023
Provision for loan losses	1,386	(247)
Charge-offs	(284)	(9)
Recoveries	63	32
Ending balance	4,413	2,799
Ending ALLL related to loans collectively evaluated for impairment	4,385		2,963
Ending ALLL related to loans individually evaluated for impairment	28		285
Ending ALLL related to purchased credit-impaired loans	4,413		3,248
Collectively evaluated for impairment	217,649		216,368
Individually evaluated for impairment	2,070		2,207
Total loans	$ 219,760		$ 218,615
Ratio of allowance for loan losses to total loans	2.01%		1.49%
Commercial loans | Commercial and industrial | Purchase credit-impaired
Allowance for Loan and Lease Losses [Roll Forward]
Ending ALLL related to purchased credit-impaired loans	$ 0		$ 0
Purchase credit-impaired	41		40
Commercial real estate loans | Commercial real estate, owner-occupied
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,753	2,249
Provision for loan losses	239	(630)
Charge-offs	0	0
Recoveries	0	0
Ending balance	1,992	1,619
Ending ALLL related to loans collectively evaluated for impairment	1,835		1,590
Ending ALLL related to loans individually evaluated for impairment	157		163
Ending ALLL related to purchased credit-impaired loans	1,992		1,753
Collectively evaluated for impairment	246,086		239,648
Individually evaluated for impairment	7,001		6,993
Total loans	$ 254,180		$ 247,713
Ratio of allowance for loan losses to total loans	0.78%		0.71%
Commercial real estate loans | Commercial real estate, owner-occupied | Purchase credit-impaired
Allowance for Loan and Lease Losses [Roll Forward]
Ending ALLL related to purchased credit-impaired loans	$ 0		$ 0
Purchase credit-impaired	1,093		1,072
Commercial real estate loans | Commercial real estate, investor
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,320	6,178
Provision for loan losses	(187)	388
Charge-offs	0	0
Recoveries	0	5
Ending balance	6,133	6,571
Ending ALLL related to loans collectively evaluated for impairment	5,759		5,945
Ending ALLL related to loans individually evaluated for impairment	374		375
Ending ALLL related to purchased credit-impaired loans	6,133		6,320
Collectively evaluated for impairment	707,070		720,266
Individually evaluated for impairment	3,311		2,256
Total loans	$ 712,081		$ 724,228
Ratio of allowance for loan losses to total loans	0.86%		0.87%
Allowance for loan losses to non-accrual loans	570.00%
Commercial real estate loans | Commercial real estate, investor | Purchase credit-impaired
Allowance for Loan and Lease Losses [Roll Forward]
Ending ALLL related to purchased credit-impaired loans	$ 0		$ 0
Purchase credit-impaired	1,700		1,706
Commercial real estate loans | Construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	781	724
Provision for loan losses	(235)	98
Charge-offs	0	0
Recoveries	0	0
Ending balance	546	822
Ending ALLL related to loans collectively evaluated for impairment	540		773
Ending ALLL related to loans individually evaluated for impairment	6		8
Ending ALLL related to purchased credit-impaired loans	546		781
Collectively evaluated for impairment	63,921		71,564
Individually evaluated for impairment	3,241		3,245
Total loans	$ 67,162		$ 74,809
Ratio of allowance for loan losses to total loans	0.81%		1.04%
Commercial real estate loans | Construction | Purchase credit-impaired
Allowance for Loan and Lease Losses [Roll Forward]
Ending ALLL related to purchased credit-impaired loans	$ 0		$ 0
Purchase credit-impaired	0		0
Residential loans | Home equity
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	973	910
Provision for loan losses	17	133
Charge-offs	0	0
Recoveries	0	1
Ending balance	990	1,044
Ending ALLL related to loans collectively evaluated for impairment	980		966
Ending ALLL related to loans individually evaluated for impairment	10		7
Ending ALLL related to purchased credit-impaired loans	990		973
Collectively evaluated for impairment	114,366		116,390
Individually evaluated for impairment	711		715
Total loans	$ 115,180		$ 117,207
Ratio of allowance for loan losses to total loans	0.86%		0.83%
Allowance for loan losses to non-accrual loans	1138.00%		1071.00%
Residential loans | Home equity | Purchase credit-impaired
Allowance for Loan and Lease Losses [Roll Forward]
Ending ALLL related to purchased credit-impaired loans	$ 0		$ 0
Purchase credit-impaired	103		102
Residential loans | Other residential
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	454	394
Provision for loan losses	(10)	36
Charge-offs	0	0
Recoveries	0	0
Ending balance	444	430
Ending ALLL related to loans collectively evaluated for impairment	444		399
Ending ALLL related to loans individually evaluated for impairment	0		55
Ending ALLL related to purchased credit-impaired loans	444		454
Collectively evaluated for impairment	83,545		76,584
Individually evaluated for impairment	1,175		1,965
Total loans	$ 84,720		$ 78,549
Ratio of allowance for loan losses to total loans	0.52%		0.58%
Residential loans | Other residential | Purchase credit-impaired
Allowance for Loan and Lease Losses [Roll Forward]
Ending ALLL related to purchased credit-impaired loans	$ 0		$ 0
Purchase credit-impaired	0		0
Consumer loans | Installment and other consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	372	425
Provision for loan losses	(11)	9
Charge-offs	(3)	0
Recoveries	1	0
Ending balance	359	434
Ending ALLL related to loans collectively evaluated for impairment	261		274
Ending ALLL related to loans individually evaluated for impairment	98		98
Ending ALLL related to purchased credit-impaired loans	359		372
Collectively evaluated for impairment	23,541		24,563
Individually evaluated for impairment	946		932
Total loans	$ 24,487		$ 25,495
Ratio of allowance for loan losses to total loans	1.47%		1.46%
Allowance for loan losses to non-accrual loans	690.00%		683.00%
Consumer loans | Installment and other consumer | Purchase credit-impaired
Allowance for Loan and Lease Losses [Roll Forward]
Ending ALLL related to purchased credit-impaired loans	$ 0		$ 0
Purchase credit-impaired	0		0
Unallocated
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,541	1,096
Provision for loan losses	(1,199)	213
Charge-offs	0	0
Recoveries	0	0
Ending balance	342	$ 1,309
Ending ALLL related to loans collectively evaluated for impairment	342		1,541
Ending ALLL related to loans individually evaluated for impairment	0		0
Ending ALLL related to purchased credit-impaired loans	342		1,541
Collectively evaluated for impairment	0		0
Individually evaluated for impairment	0		0
Total loans	0		0
Unallocated | Purchase credit-impaired
Allowance for Loan and Lease Losses [Roll Forward]
Ending ALLL related to purchased credit-impaired loans	0		0
Purchase credit-impaired	$ 0		$ 0

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Loans and Allowance for Loan Losses - Purchased Credit-Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
PCI Loans, Carrying Value [Abstract]
Unpaid principal balance	$ 3,323		$ 3,350
Carrying value	2,937		2,920
Accretable Yield [Roll Forward]
Balance at beginning of period	1,476	$ 2,618
Additions	0	0
Removals	0	(778)
Accretion	(90)	(98)
Reclassifications from nonaccretable difference	0	0
Balance at end of period	1,386	$ 1,742
Commercial loans | Commercial and industrial
PCI Loans, Carrying Value [Abstract]
Unpaid principal balance	42		45
Carrying value	41		40
Commercial real estate loans | Commercial real estate, owner-occupied
PCI Loans, Carrying Value [Abstract]
Unpaid principal balance	1,332		1,344
Carrying value	1,093		1,072
Commercial real estate loans | Commercial real estate, investor
PCI Loans, Carrying Value [Abstract]
Unpaid principal balance	1,702		1,713
Carrying value	1,700		1,706
Residential loans | Home equity
PCI Loans, Carrying Value [Abstract]
Unpaid principal balance	247		248
Carrying value	$ 103		$ 102

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Loans and Allowance for Loan Losses - Pledged Loans (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Financial Instruments Owned and Pledged as Collateral [Line Items]
Residential loans pledged for FRB borrowings	$ 882.6	$ 869.2
Other residential
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged residential loan portfolio to secure borrowing with FRB	$ 55.8	$ 54.6

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Loans and Allowance for Loan Losses - Related Party Loans (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Related party loans	$ 9.5	$ 2.0
Directors, Officers, Principal Shareholders and Associates
Related Party Transaction [Line Items]
Undisbursed commitment to related parties	$ 9.1	$ 1.1

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Borrowings - Lines of Credit (Details) - Line of credit - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Federal Funds Purchased
Line of Credit Facility [Line Items]
Amount of borrowings outstanding	$ 0	$ 0
Federal Home Loan Bank Borrowings
Line of Credit Facility [Line Items]
Lines of credit	505,900,000	513,700,000
Federal Home Loan Bank Overnight Borrowings
Line of Credit Facility [Line Items]
Amount of borrowings outstanding	0
Federal Reserve Line of Credit
Line of Credit Facility [Line Items]
Lines of credit	43,900,000	43,100,000
Amount of borrowings outstanding	0	0
Unsecured Debt | Federal Funds Purchased
Line of Credit Facility [Line Items]
Lines of credit	$ 92,000,000	$ 92,000,000

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Borrowings - Subordinated Debt (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) debenture	Mar. 31, 2016 USD ($)
Debt Instrument [Line Items]
Accretion of discount on subordinated debentures	$ 42	$ 50
Amount guaranteed, on subordinated basis, distributions and other payments on trust preferred securities	$ 8,000
Subordinated debenture
Debt Instrument [Line Items]
Number of subordinated debentures acquired | debenture	2
Subordinated debentures	$ 4,950
Contractual value of subordinated debt	8,248
Accretion of discount on subordinated debentures	$ 42	$ 50
Debenture distribution deferral period (up to number of years)	5 years
Subordinated debenture | NorCal Community Bancorp Trust I
Debt Instrument [Line Items]
Contractual value of subordinated debt	$ 4,124
Effective interest rate	4.07%
Basis spread on subordinated debentures	3.05%
Subordinated debenture | NorCal Community Bancorp Trust II
Debt Instrument [Line Items]
Contractual value of subordinated debt	$ 4,124
Effective interest rate	2.53%
Basis spread on subordinated debentures	1.40%

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Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		12 Months Ended
	Oct. 21, 2016	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Class of Stock [Line Items]
Cash dividends to common stockholders		$ 1,655	$ 1,518	$ 6,223
Cash dividends paid per common share (usd per share)		$ 0.27	$ 0.25
Dividends declared per common share (usd per share)	$ 0.27
Shares withheld for tax withholding and exercise of options		4,715
Amount of shares withheld for tax withholding and exercise of options		$ 342
Shares withheld for tax withholding and exercise of options, weighted average price		$ 68.80
Performance-based stock awards
Class of Stock [Line Items]
Vesting period of performance-based stock awards		3 years
Performance-based stock awards | Minimum
Class of Stock [Line Items]
Vesting percentage of performance-based awards		0.00%
Performance-based stock awards | Maximum
Class of Stock [Line Items]
Vesting percentage of performance-based awards		200.00%

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Commitments and Contingencies (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2012	Dec. 31, 2016
Operating Leases
2017	$ 2,928
2018	3,932
2019	3,739
2020	3,420
2021	2,138
Thereafter	4,234
Total	20,391
Minimum payments due on minimum sublease rentals under non-cancelable subleases	126
Rent expense	1,000	$ 1,000
Visa Inc.
Litigation Matters
Balance of escrow account for legal settlements	$ 978,000
Visa Inc. | Pending due to reversal
Litigation Matters
Class settlement agreement amount, reversed by appellate court			$ 4,000,000
Settlements reached by percentage of sales volume of merchants who opted out in Visa litigation, percent	34.00%
Loan commitments and standby letters of credit, unused
Loss Contingencies [Line Items]
Loan commitments and standby letters of credit, off-balance sheet	$ 415,793			$ 422,289
Loan commitments and standby letters of credit, unused | Interest payable and other liabilities
Loss Contingencies [Line Items]
Allowance for off balance sheet commitments	1,100			899
Commercial lines of credit
Loss Contingencies [Line Items]
Loan commitments and standby letters of credit, off-balance sheet	214,491			216,774
Revolving home equity lines
Loss Contingencies [Line Items]
Loan commitments and standby letters of credit, off-balance sheet	155,234			148,143
Undisbursed construction loans
Loss Contingencies [Line Items]
Loan commitments and standby letters of credit, off-balance sheet	33,498			44,798
Personal and other lines of credit
Loss Contingencies [Line Items]
Loan commitments and standby letters of credit, off-balance sheet	10,741			10,635
Standby letters of credit
Loss Contingencies [Line Items]
Loan commitments and standby letters of credit, off-balance sheet	$ 1,829			$ 1,939

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Derivative Financial Instruments and Hedging Activities - Narrative (Details) - Fair value hedge $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) derivative	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
Derivatives, Fair Value [Line Items]
Net hedge ineffectiveness gain (loss), derivatives	$ (6)	$ 162
Interest income
Derivatives, Fair Value [Line Items]
Increase (decrease) in value of designated interest rate swaps due to LIBOR interest rate movements recognized in interest income	111	(876)
Payment on interest rate swaps recorded in interest income	(98)	(174)
(Decrease) increase in value of hedged loans recognized in interest income	(113)	1,050
Decrease in value of yield maintenance agreement recognized against interest income	(4)	(12)
Net loss on derivatives recognized against interest income	(104)	$ (12)
Designated as hedging instrument
Derivatives, Fair Value [Line Items]
Accrued interest on swaps	$ 12		$ 13
Interest rate swap | Designated as hedging instrument
Derivatives, Fair Value [Line Items]
Number of derivative instruments | derivative	5
Interest rate swap | Designated as hedging instrument | Other assets
Derivatives, Fair Value [Line Items]
Interest rate contracts notional amount, Asset derivatives	$ 4,168		4,217
Interest rate swap | Designated as hedging instrument | Other liabilities
Derivatives, Fair Value [Line Items]
Interest rate contracts notional amount, Liability derivatives	15,324		15,495
Interest rate contract | Designated as hedging instrument | Other assets
Derivatives, Fair Value [Line Items]
Interest rate contracts fair value, Asset derivatives	70		55
Interest rate contract | Designated as hedging instrument | Other liabilities
Derivatives, Fair Value [Line Items]
Interest rate contracts fair value, Liability derivatives	$ 837		$ 933

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Derivative Financial Instruments and Hedging Activities - Offsetting of Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Offsetting Assets [Line Items]
Gross Amounts of Recognized Assets	$ 70
Gross Amounts Offset in the Statements of Condition	0
Net Amounts of Assets Presented in the Statements of Condition	70
Gross Amounts Not Offset in the Statements of Condition, Financial Instruments	(70)
Gross Amounts Not Offset in the Statements of Condition, Cash Collateral Received	0
Net Amount	0
Interest rate swap | Other assets
Offsetting Assets [Line Items]
Accrued interest on derivative asset interest rate swaps	$ 1	$ 1
Counterparty A
Offsetting Assets [Line Items]
Gross Amounts of Recognized Assets		55
Gross Amounts Offset in the Statements of Condition		0
Net Amounts of Assets Presented in the Statements of Condition		55
Gross Amounts Not Offset in the Statements of Condition, Financial Instruments		(55)
Gross Amounts Not Offset in the Statements of Condition, Cash Collateral Received		0
Net Amount		$ 0

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Derivative Financial Instruments and Hedging Activities - Offsetting of Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Interest rate swap | Other liabilities
Offsetting Liabilities [Line Items]
Accrued interest on derivative liability interest swaps	$ 11	$ 12
Counterparty A
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	837	933
Gross Amounts Offset in the Statements of Condition	0	0
Net Amounts of Liabilities Presented in the Statements of Condition	837	933
Gross Amounts Not Offset in the Statements of Condition, Financial Instruments	(70)	(55)
Gross Amounts Not Offset in the Statements of Condition, Cash Collateral Pledged	(767)	(878)
Net Amount	$ 0	$ 0