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 June 30, 2018

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 0-6233

(Exact name of registrant as specified in its charter)

INDIANA	35-1068133
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

100 North Michigan Street
South Bend, IN	46601
(Address of principal executive offices)	(Zip Code)

(574) 235-2000

(Registrant’s telephone number, including area code)

Not Applicable

(Former name, former address and former fiscal year, if changed since last report)

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

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

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a 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.  (Check one):

Large accelerated filer x	Accelerated filer o
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 Section13(a) of the Exchange Act. o

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

Number of shares of common stock outstanding as of July 13, 2018 — 25,965,077 shares

TABLE OF CONTENTS

		Page
PART I. FINANCIAL INFORMATION
Item 1.	Financial Statements (Unaudited)
	Consolidated Statements of Financial Condition — June 30, 2018 and December 31, 2017	3
	Consolidated Statements of Income — three and six months ended June 30, 2018 and 2017	4
	Consolidated Statements of Comprehensive Income — three and six months ended June 30, 2018 and 2017	5
	Consolidated Statements of Shareholders’ Equity — six months ended June 30, 2018 and 2017	5
	Consolidated Statements of Cash Flows — six months ended June 30, 2018 and 2017	6
	Notes to the Consolidated Financial Statements	7
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	30
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	40
Item 4.	Controls and Procedures	40
PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	40
Item 1A.	Risk Factors	40
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	41
Item 3.	Defaults Upon Senior Securities	41
Item 4.	Mine Safety Disclosures	41
Item 5.	Other Information	41
Item 6.	Exhibits	41
SIGNATURES		42
EXHIBITS
	Exhibit 31.1
	Exhibit 31.2
	Exhibit 32.1
	Exhibit 32.2

2

1st SOURCE CORPORATION

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION

(Unaudited - Dollars in thousands)

	June 30, 2018			December 31, 2017
ASSETS
Cash and due from banks	$	71,102		$	73,635
Federal funds sold and interest bearing deposits with other banks	73,358			4,398
Investment securities available-for-sale	968,349			904,033
Other investments	28,159			25,953
Mortgages held for sale	8,235			13,123
Loans and leases, net of unearned discount:
Commercial and agricultural	1,047,705			929,997
Auto and light truck	580,045			496,816
Medium and heavy duty truck	276,273			296,935
Aircraft	863,496			844,657
Construction equipment	642,634			563,437
Commercial real estate	769,659			741,568
Residential real estate and home equity	524,112			526,122
Consumer	135,899			128,146
Total loans and leases	4,839,823			4,527,678
Reserve for loan and lease losses	(103,007		)	(94,883		)
Net loans and leases	4,736,816			4,432,795
Equipment owned under operating leases, net	143,024			139,581
Net premises and equipment	53,363			54,612
Goodwill and intangible assets	84,104			83,742
Accrued income and other assets	153,548			155,412
Total assets	$	6,320,058		$	5,887,284
LIABILITIES
Deposits:
Noninterest-bearing demand	$	1,106,495		$	1,064,271
Interest-bearing deposits:
Interest-bearing demand	1,651,533			1,554,898
Savings	843,558			863,588
Time	1,506,853			1,269,973
Total interest-bearing deposits	4,001,944			3,688,459
Total deposits	5,108,439			4,752,730
Short-term borrowings:
Federal funds purchased and securities sold under agreements to repurchase	106,861			205,834
Other short-term borrowings	170,233			8,761
Total short-term borrowings	277,094			214,595
Long-term debt and mandatorily redeemable securities	71,194			70,060
Subordinated notes	58,764			58,764
Accrued expenses and other liabilities	64,290			72,598
Total liabilities	5,579,781			5,168,747
SHAREHOLDERS’ EQUITY
Preferred stock; no par value
Authorized 10,000,000 shares; none issued or outstanding	—			—
Common stock; no par value
Authorized 40,000,000 shares; issued 28,205,674 at June 30, 2018 and December 31, 2017	436,538			436,538
Retained earnings	370,521			339,959
Cost of common stock in treasury (2,240,597 shares at June 30, 2018 and 2,268,910 shares at December 31, 2017)	(54,367		)	(54,628		)
Accumulated other comprehensive loss	(12,415		)	(3,332		)
Total shareholders’ equity	740,277			718,537
Total liabilities and shareholders’ equity	$	6,320,058		$	5,887,284

The accompanying notes are a part of the consolidated financial statements.

3

1st SOURCE CORPORATION

CONSOLIDATED STATEMENTS OF INCOME

(Unaudited - Dollars in thousands, except per share amounts)

	Three Months Ended   June 30,				Six Months Ended   June 30,
	2018		2017		2018			2017
Interest income:
Loans and leases	$	58,520	$	48,032	$	112,211		$	92,916
Investment securities, taxable	4,428		3,370		8,996			6,884
Investment securities, tax-exempt	520		677		1,091			1,360
Other	397		319		805			610
Total interest income	63,865		52,398		123,103			101,770
Interest expense:
Deposits	8,319		4,511		14,881			8,245
Short-term borrowings	826		272		1,602			499
Subordinated notes	908		1,055		1,791			2,110
Long-term debt and mandatorily redeemable securities	643		699		1,128			1,328
Total interest expense	10,696		6,537		19,402			12,182
Net interest income	53,169		45,861		103,701			89,588
Provision for loan and lease losses	4,817		2,738		8,603			3,738
Net interest income after provision for loan and lease losses	48,352		43,123		95,098			85,850
Noninterest income:
Trust and wealth advisory	5,800		5,627		10,988			10,628
Service charges on deposit accounts	2,336		2,464		4,564			4,703
Debit card	3,427		2,986		6,530			5,736
Mortgage banking	1,073		1,304		1,957			2,251
Insurance commissions	1,487		1,310		3,445			3,077
Equipment rental	8,104		7,586		15,859			14,418
Gains (losses) on investment securities available-for-sale	—		465		(345		)	1,750
Other	2,796		2,394		5,832			4,880
Total noninterest income	25,023		24,136		48,830			47,443
Noninterest expense:
Salaries and employee benefits	23,696		20,712		46,227			42,057
Net occupancy	2,115		2,368		4,981			4,962
Furniture and equipment	5,718		5,108		11,173			9,901
Depreciation – leased equipment	6,684		6,296		13,112			11,976
Professional fees	1,728		1,672		3,745			2,749
Supplies and communication	1,499		1,345		3,052			2,595
FDIC and other insurance	714		573		1,412			1,196
Business development and marketing	1,725		1,501		3,258			3,153
Loan and lease collection and repossession	565		329		1,516			965
Other	1,433		1,201		2,958			2,670
Total noninterest expense	45,877		41,105		91,434			82,224
Income before income taxes	27,498		26,154		52,494			51,069
Income tax expense	5,534		9,485		11,414			18,194
Net income	$	21,964	$	16,669	$	41,080		$	32,875
Per common share:
Basic net income per common share	$	0.84	$	0.64	$	1.57		$	1.26
Diluted net income per common share	$	0.84	$	0.64	$	1.57		$	1.26
Cash dividends	$	0.24	$	0.19	$	0.46		$	0.37
Basic weighted average common shares outstanding	25,958,128		25,927,032		25,954,278			25,915,280
Diluted weighted average common shares outstanding	25,958,128		25,927,032		25,954,278			25,915,280

The accompanying notes are a part of the consolidated financial statements.

4

1st SOURCE CORPORATION

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited - Dollars in thousands)

	Three Months Ended   June 30,						Six Months Ended   June 30,
	2018			2017			2018			2017
Net income	$	21,964		$	16,669		$	41,080		$	32,875
Other comprehensive (loss) income:
Unrealized (depreciation) appreciation of available-for-sale securities	(1,949		)	2,242			(11,363		)	3,500
Reclassification adjustment for realized (gains) losses included in net income	—			(465		)	345			(1,750		)
Income tax effect	469			(667		)	2,653			(657		)
Other comprehensive (loss) income, net of tax	(1,480		)	1,110			(8,365		)	1,093
Comprehensive income	$	20,484		$	17,779		$	32,715		$	33,968

The accompanying notes are a part of the consolidated financial statements.

1st SOURCE CORPORATION

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

(Unaudited - Dollars in thousands, except per share amounts)

	Preferred Stock		Common Stock		Retained Earnings			Cost of Common Stock in Treasury			Accumulated Other Comprehensive Income (Loss), Net			Total
Balance at January 1, 2017	$	—	$	436,538	$	290,824		$	(56,056	)	$	1,344		$	672,650
Cumulative-effect adjustment	—		—		(65		)	—			—			$	(65	)
Balance at January 1, 2017, adjusted	—		436,538		290,759			(56,056		)	1,344			672,585
Net income	—		—		32,875			—			—			32,875
Other comprehensive income	—		—		—			—			1,093			1,093
Issuance of 60,459 common shares under stock based compensation awards	—		—		870			1,435			—			2,305
Cost of 900 shares of common stock acquired for treasury	—		—		—			(41		)	—			(41		)
Common stock dividend ($0.37 per share)	—		—		(9,615		)	—			—			(9,615		)
Balance at June 30, 2017	$	—	$	436,538	$	314,889		$	(54,662	)	$	2,437		$	699,202
Balance at January 1, 2018	$	—	$	436,538	$	339,959		$	(54,628	)	$	(3,332	)	$	718,537
Cumulative-effect adjustment	—		—		718			—			(718		)	—
Balance at January 1, 2018, adjusted	—		436,538		340,677			(54,628		)	(4,050		)	718,537
Net income	—		—		41,080			—			—			41,080
Other comprehensive loss	—		—		—			—			(8,365		)	(8,365		)
Issuance of 44,102 common shares under stock based compensation awards	—		—		723			1,047			—			1,770
Cost of 15,789 shares of common stock acquired for treasury	—		—		—			(786		)	—			(786		)
Common stock dividend ($0.46 per share)	—		—		(11,959		)	—			—			(11,959		)
Balance at June 30, 2018	$	—	$	436,538	$	370,521		$	(54,367	)	$	(12,415	)	$	740,277

The accompanying notes are a part of the consolidated financial statements.

5

1st SOURCE CORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited - Dollars in thousands)

	Six Months Ended June 30,
	2018			2017
Operating activities:
Net income	$	41,080		$	32,875
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan and lease losses	8,603			3,738
Depreciation of premises and equipment	2,648			2,758
Depreciation of equipment owned and leased to others	13,112			11,976
Stock-based compensation	1,850			1,413
Amortization of investment securities premiums and accretion of discounts, net	1,967			2,402
Amortization of mortgage servicing rights	471			551
Deferred income taxes	(3,495		)	(1,222		)
Losses (gains) on investment securities available-for-sale	345			(1,750		)
Originations of loans held for sale, net of principal collected	(34,035		)	(44,472		)
Proceeds from the sales of loans held for sale	39,953			45,420
Net gain on sale of loans held for sale	(1,030		)	(1,303		)
Net (gain) loss on sale of other real estate and repossessions	(57		)	75
Change in interest receivable	(2,086		)	(224		)
Change in interest payable	2,462			357
Change in other assets	(3,951		)	(654		)
Change in other liabilities	1,581			4,019
Other	342			1,695
Net change in operating activities	69,760			57,654
Investing activities:
Proceeds from sales of investment securities available-for-sale	11,739			1,766
Proceeds from maturities and paydowns of investment securities available-for-sale	84,033			93,098
Purchases of investment securities available-for-sale	(173,416		)	(94,117		)
Proceeds from liquidation of partnership investment	1,868			75
Net change in other investments	(2,206		)	(1,780		)
Loans sold or participated to others	14,310			6,579
Net change in loans and leases	(327,802		)	(206,166		)
Net change in equipment owned under operating leases	(16,555		)	(37,692		)
Purchases of premises and equipment	(1,332		)	(1,017		)
Proceeds from sales of other real estate and repossessions	1,900			2,042
Net change in investing activities	(407,461		)	(237,212		)
Financing activities:
Net change in demand deposits and savings accounts	118,829			54,453
Net change in time deposits	236,880			93,823
Net change in short-term borrowings	62,499			14,640
Proceeds from issuance of long-term debt	—			19,999
Payments on long-term debt	(1,108		)	(25,790		)
Stock issued under stock purchase plans	145			153
Acquisition of treasury stock	(786		)	(41		)
Cash dividends paid on common stock	(12,331		)	(9,949		)
Net change in financing activities	404,128			147,288
Net change in cash and cash equivalents	66,427			(32,270		)
Cash and cash equivalents, beginning of year	78,033			108,304
Cash and cash equivalents, end of period	$	144,460		$	76,034
Supplemental Information:
Non-cash transactions:
Loans transferred to other real estate and repossessed assets	$	868		$	5,977
Common stock matching contribution to Employee Stock Ownership and Profit Sharing Plan	583			1,426

The accompanying notes are a part of the consolidated financial statements.

6

1ST SOURCE CORPORATION

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 1.       Accounting Policies

1st Source Corporation is a bank holding company headquartered in South Bend, Indiana that provides, through its subsidiaries (collectively referred to as “1st Source” or “the Company”), a broad array of financial products and services.

Basis of Presentation – The accompanying unaudited consolidated financial statements reflect all adjustments (all of which are normal and recurring in nature) which are, in the opinion of management, necessary for a fair presentation of the consolidated financial position, the results of operations, changes in comprehensive income, changes in shareholders’ equity, and cash flows for the periods presented. These unaudited consolidated financial statements have been prepared according to the rules and regulations of the Securities and Exchange Commission (SEC) and, therefore, certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (GAAP) have been omitted.

The Notes to the Consolidated Financial Statements appearing in 1st Source Corporation’s Annual Report on Form 10-K (2017 Annual Report), which include descriptions of significant accounting policies, should be read in conjunction with these interim financial statements. The Consolidated Statement of Financial Condition at December 31, 2017 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by GAAP for complete financial statements. Certain amounts in the prior period consolidated financial statements have been reclassified to conform to the current period presentation.

Use of Estimates in the Preparation of Financial Statements – Financial statements prepared in accordance with GAAP require the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expense during the reporting period. Actual results could differ from those estimates.

Loans and Leases – Loans are stated at the principal amount outstanding, net of unamortized deferred loan origination fees and costs and net of unearned income. Interest income is accrued as earned based on unpaid principal balances. Origination fees and direct loan and lease origination costs are deferred and the net amount amortized to interest income over the estimated life of the related loan or lease. Loan commitment fees are deferred and amortized into other income over the commitment period.

Direct financing leases are carried at the aggregate of lease payments plus estimated residual value of the leased property, net of unamortized deferred lease origination fees and costs and unearned income. Interest income on direct financing leases is recognized over the term of the lease to achieve a constant periodic rate of return on the outstanding investment.

The accrual of interest on loans and leases is discontinued when a loan or lease becomes contractually delinquent for 90 days, or when an individual analysis of a borrower’s credit worthiness indicates a credit should be placed on nonperforming status, except for residential mortgage loans and consumer loans that are well secured and in the process of collection. Residential mortgage loans are placed on nonaccrual at the time the loan is placed in foreclosure. When interest accruals are discontinued, interest credited to income in the current year is reversed and interest accrued in the prior year is charged to the reserve for loan and lease losses. However, in some cases, the Company may elect to continue the accrual of interest when the net realizable value of collateral is sufficient to cover the principal and accrued interest. When a loan or lease is classified as nonaccrual and the future collectibility of the recorded loan or lease balance is doubtful, collections on interest and principal are applied as a reduction to principal outstanding. Loans are returned to accrual status when all principal and interest amounts contractually due are brought current and future payments are reasonably assured, which is typically evidenced by a sustained repayment performance of at least six months.

A loan or lease is considered impaired, based on current information and events, if it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan or lease agreement. Interest on impaired loans and leases, which are not classified as nonaccrual, is recognized on the accrual basis. The Company evaluates loans and leases exceeding $100,000 for impairment and establishes a specific reserve as a component of the reserve for loan and lease losses when it is probable all amounts due will not be collected pursuant to the contractual terms of the loan or lease and the recorded investment in the loan or lease exceeds its fair value.

Loans and leases that have been modified and economic concessions have been granted to borrowers who have experienced financial difficulties are considered a troubled debt restructuring (TDR) and, by definition, are deemed an impaired loan. These concessions typically result from the Company’s loss mitigation activities and may include reductions in the interest rate, payment extensions, forgiveness of principal, forbearance or other actions. Certain TDRs are classified as nonperforming at the time of restructuring and typically are returned to performing status after considering the borrower’s sustained repayment performance for a reasonable period of at least six months.

7

When the Company modifies loans and leases in a TDR, it evaluates any possible impairment similar to other impaired loans based on the present value of expected future cash flows, discounted at the contractual interest rate of the original loan or lease agreement, or uses the current fair value of the collateral, less selling costs for collateral dependent loans. If the Company determines that the value of the modified loan is less than the recorded investment in the loan (net of previous charge-offs, deferred loan fees or costs and unamortized premium or discount), impairment is recognized through a reserve for loan and lease losses estimate or a charge-off to the reserve for loan and lease losses. In periods subsequent to modification, the Company evaluates all TDRs, including those that have payment defaults, for possible impairment and recognizes impairment through the reserve for loan and lease losses.

Revenue Recognition

The Company recognizes revenues as they are earned based on contractual terms, as transactions occur, or as services are provided and collectability is reasonably assured. The Company’s principal source of revenue is interest income from loans and leases and investment securities. The Company also earns noninterest income from various banking and financial services offered primarily through 1st Source Bank (Bank) and its subsidiaries.

Interest Income – The largest source of revenue for the Company is interest income which is primarily recognized on an accrual basis according to nondiscretionary formulas in written contracts, such as loan and lease agreements or investment securities contracts.

Noninterest Income – The Company earns noninterest income through a variety of financial and transaction services provided to corporate and consumer clients such as trust and wealth advisory, deposit account, debit card, mortgage banking, insurance, and equipment rental services. Revenue is recorded for noninterest income based on the contractual terms for the service or transaction performed. In certain circumstances, noninterest income is reported net of associated expenses.

Note 2 — Recent Accounting Pronouncements

Share Based Payment Accounting: In June 2018, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2018-07 “Compensation - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting.” These amendments expand the scope of Topic 718, Compensation - Stock Compensation (which currently only includes share-based payments to employees) to include share-based payments issued to nonemployees for goods or services. Consequently, the accounting for share-based payments to nonemployees and employees will be substantially aligned. The ASU supersedes Subtopic 505-50, Equity - Equity-Based Payments to Non-Employees. The guidance is effective for public companies for fiscal years, and interim fiscal periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, but no earlier than a company’s adoption date of Topic 606, Revenue from Contracts with Customers. The Company is assessing ASU 2018-07 and does not expect it to have a material impact on its accounting and disclosures.

Income Taxes: In March 2018, the FASB issued ASU 2018-05 “Income Taxes (Topic 740): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin (SAB) No. 118.” These amendments add SEC guidance to the FASB Accounting Standards Codification regarding the Tax Cuts and Jobs Act pursuant to the issuance of SAB 118. The amendments are effective upon addition to the FASB Codification. Disclosures related to the effect of the Tax Cuts and Jobs Act and the Company’s utilization of SAB 118 appear in Note 12 - Income Taxes.

Accumulated Other Comprehensive Income (Loss): In February 2018, the FASB issued ASU No. 2018-02 “Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” These amendments provide financial statement preparers with an option to reclassify stranded tax effects within AOCI to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act (or portion thereof) is recorded. The guidance is effective for all organizations for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in any interim period. The amendments should be applied either in the period adopted or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. The Company early adopted ASU 2018-02 on January 1, 2018 through a $0.72 million cumulative-effect adjustment from AOCI to increase retained earnings related to unrealized gains and losses on available-for-sale securities. No other income tax effects related to the application of the Tax Cuts and Jobs Act were reclassified from AOCI to retained earnings.

8

Premium Amortization: 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.” These amendments shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The guidance is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. If an entity early adopts in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The amendments should be applied on a modified retrospective basis, with a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Company estimates that it will recognize a cumulative-effect adjustment to retained earnings of $0.30 million upon the adoption of ASU 2017-08 on January 1, 2019. This estimate could change due to changes in the security portfolio prior to the adoption date.

Simplifying the Test for Goodwill Impairment: In January 2017, the FASB issued ASU No. 2017-04 “Intangibles - Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment.” These amendments eliminate Step 2 from the goodwill impairment test. The amendments also eliminate the requirements for any reporting unit with a zero or negative carrying amount to perform a qualitative assessment and, if it fails that qualitative test, to perform Step 2 of the goodwill impairment test. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. The guidance is effective for annual or any interim goodwill impairment tests in 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. ASU 2017-04 should be adopted on a prospective basis. The Company has assessed ASU 2017-04 and does not expect it to have a material impact on its accounting and disclosures.

Measurement of Credit Losses on Financial Instruments: In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments-Credit Losses (Topic 326) - Measurement of Credit Losses on Financial Instruments.” The provisions of ASU 2016-13 were issued to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments that are not accounted for at fair value through net income, including loans held for investment, held-to-maturity debt securities, trade and other receivables, net investment in leases and other commitments to extend credit held by a reporting entity at each reporting date. ASU 2016-13 requires that financial assets measured at amortized cost be presented at the net amount expected to be collected, through an allowance for credit losses that is deducted from the amortized cost basis. The amendments in ASU 2016-13 eliminate the probable incurred loss recognition in current GAAP and reflect an entity’s current estimate of all expected credit losses. The measurement of expected credit losses is based upon historical experience, current conditions, and reasonable and supportable forecasts that affect the collectibility of the financial assets.

For purchased financial assets with a more-than-insignificant amount of credit deterioration since origination (“PCD assets”) that are measured at amortized cost, the initial allowance for credit losses is added to the purchase price rather than being reported as a credit loss expense. Subsequent changes in the allowance for credit losses on PCD assets are recognized through the statement of income as a credit loss expense.

Credit losses relating to available-for-sale debt securities will be recorded through an allowance for credit losses rather than as a direct write-down to the security.

ASU 2016-13 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company has an implementation team working through the provisions of ASU 2016-13 including assessing the impact on its accounting and disclosures.

Leases: In February 2016, the FASB issued ASU No. 2016-02 “Leases (Topic 842).” ASU 2016-02 establishes a right of use model that requires a lessee to record a right of use asset and a lease liability for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. For lessors, the guidance modifies the classification criteria and the accounting for sales-type and direct financing leases. A lease will be treated as sale if it transfers all of the risks and rewards, as well as control of the underlying asset, to the lessee. If risks and rewards are conveyed without the transfer of control, the lease is treated as a financing. If the lessor doesn’t convey risks and rewards or control, an operating lease results. The amendments are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years for public business entities. Entities are required to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements, with certain practical expedients available. Early adoption is permitted. The Company has an implementation team working through the provisions of ASU 2016-02 including a review of all leases to assess the impact on its accounting, disclosures, processes, internal control over financial reporting, and the election of certain practical expedients. The Company has selected a third party software solution to assist with the accounting under the new standard. It is expected that the Company will recognize discounted right of use assets and lease liabilities (estimated between $10 and $20 million) upon adoption on January 1, 2019. The estimates will change due to changes in the lease portfolio prior to the adoption date.

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Recognition and Measurement of Financial Instruments: 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.” ASU 2016-01 is intended to improve the recognition and measurement of financial instruments by requiring equity investments to be measured at fair value with changes in fair value recognized in net income; requiring public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; requiring separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements; eliminating the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured and amortized at cost on the balance sheet; and requiring a reporting organization to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the organization has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. ASU 2016-01 is effective for annual periods and interim periods within those annual periods, beginning after December 15, 2017. The amendments should be applied by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The amendments related to equity securities without readily determinable fair values (including disclosure requirements) should be applied prospectively to equity investments that exist as of the date of adoption. In February 2018, the FASB issued ASU No. 2018-03 which includes technical corrections and improvements to clarify the guidance in ASU No. 2016-01. The Company adopted ASU 2016-01 on January 1, 2018 and it did not have a material effect on its accounting for equity investments, fair value disclosures and other disclosure requirements.

Revenue from Contracts with Customers: In May 2014, the FASB issued ASU No. 2014-09 “Revenue from Contracts with Customers (Topic 606).” The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. On July 9, 2015, the FASB approved amendments deferring the effective date by one year. ASU 2014-09 is now effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Early application is permitted but not before the original public entity effective date, i.e., annual periods beginning after December 15, 2016. In March 2016, the FASB issued final amendments (ASU No. 2016-08 and ASU No. 2016-10) to clarify the implementation guidance for principal versus agent considerations, identifying performance obligations and the accounting for licenses of intellectual property. The amendments can be applied retrospectively to each prior reporting period or retrospectively with the cumulative effect of initially applying this Update recognized at the date of initial application. In May 2016, the FASB issued final amendments (ASU No. 2016-12 and ASU 2016-11) to address narrow-scope improvements to the guidance on collectibility, non-cash consideration, completed contracts at transition and to provide a practical expedient for contract modifications at transition and an accounting policy election related to the presentation of sales taxes and other similar taxes collected from customers. Additionally, the amendments included a rescission of SEC guidance because of ASU 2014-09 related to revenue and expense recognition for freight services in process, accounting for shipping and handling fees and costs, and accounting for consideration given by a vendor to a customer. In December 2016, the FASB issued final guidance (ASU 2016-20) that allows entities not to make quantitative disclosures about performance obligations in certain cases and requires entities that use any of the new or previously existing optional exemptions to expand their qualitative disclosures. It also makes 12 additional technical corrections and improvements to the new revenue standard. These amendments are effective upon the adoption of ASU 2014-09. The Company’s revenue is comprised of net interest income, which is explicitly excluded from the scope of ASU 2014-09, and noninterest income. ASU 2014-09 required the Company to evaluate how it recognizes certain recurring revenue streams related to noninterest income. The Company adopted ASU 2014-09 on January 1, 2018 and did not identify any significant changes in the timing of revenue recognition when considering the amended accounting guidance. Additional disclosures related to revenue recognition appears in “Note 1. Accounting Policies.”

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Note 3.       Investment Securities Available-For-Sale

The following table shows investment securities available-for-sale.

(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
June 30, 2018
U.S. Treasury and Federal agencies securities	$	533,030	$	3	$	(8,899	)	$	524,134
U.S. States and political subdivisions securities	96,653		258		(1,009		)	95,902
Mortgage-backed securities — Federal agencies	308,437		831		(6,989		)	302,279
Corporate debt securities	45,882		—		(555		)	45,327
Foreign government and other securities	700		7		—			707
Total debt securities available-for-sale	$	984,702	$	1,099	$	(17,452	)	$	968,349
December 31, 2017
U.S. Treasury and Federal agencies securities	$	471,508	$	57	$	(3,446	)	$	468,119
U.S. States and political subdivisions securities	116,260		648		(908		)	116,000
Mortgage-backed securities — Federal agencies	289,327		1,456		(2,873		)	287,910
Corporate debt securities	31,573		5		(284		)	31,294
Foreign government and other securities	700		10		—			710
Total debt securities available-for-sale	$	909,368	$	2,176	$	(7,511	)	$	904,033

At June 30, 2018 and December 31, 2017, the residential mortgage-backed securities held by the Company consisted primarily of GNMA, FNMA and FHLMC pass-through certificates which are guaranteed by those respective agencies of the United States government (Government Sponsored Enterprise, GSEs).

The following table shows the contractual maturities of investments in debt securities available-for-sale at June 30, 2018. Expected maturities will differ from contractual maturities, because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

(Dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	59,675	$	59,618
Due after one year through five years	598,258		588,454
Due after five years through ten years	18,332		17,998
Due after ten years	—		—
Mortgage-backed securities	308,437		302,279
Total debt securities available-for-sale	$	984,702	$	968,349

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The following table summarizes gross unrealized losses and fair value by investment category and age.

	Less than 12 Months					12 months or Longer					Total
(Dollars in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
June 30, 2018
U.S. Treasury and Federal agencies securities	$	414,870	$	(5,481	)	$	88,331	$	(3,418	)	$	503,201	$	(8,899	)
U.S. States and political subdivisions securities	42,123		(421		)	17,498		(588		)	59,621		(1,009		)
Mortgage-backed securities - Federal agencies	176,014		(3,540		)	83,844		(3,449		)	259,858		(6,989		)
Corporate debt securities	35,436		(214		)	9,891		(341		)	45,327		(555		)
Foreign government and other securities	—		—			—		—			—		—
Total debt securities available-for-sale	$	668,443	$	(9,656	)	$	199,564	$	(7,796	)	$	868,007	$	(17,452	)
December 31, 2017
U.S. Treasury and Federal agencies securities	$	311,865	$	(1,161	)	$	89,617	$	(2,285	)	$	401,482	$	(3,446	)
U.S. States and political subdivisions securities	34,971		(287		)	24,909		(621		)	59,880		(908		)
Mortgage-backed securities - Federal agencies	137,169		(1,336		)	60,162		(1,537		)	197,331		(2,873		)
Corporate debt securities	13,747		(57		)	10,048		(227		)	23,795		(284		)
Foreign government and other securities	—		—			—		—			—		—
Total debt securities available-for-sale	$	497,752	$	(2,841	)	$	184,736	$	(4,670	)	$	682,488	$	(7,511	)

The initial indication of potential other-than-temporary-impairment (OTTI) for debt securities is a decline in fair value below amortized cost. Quarterly, the impaired securities are analyzed on a qualitative and quantitative basis in determining OTTI. Declines in the fair value of debt securities available-for-sale below their cost that are deemed to be other-than-temporary are reflected in earnings as realized losses to the extent the impairment is related to credit losses. The amount of impairment related to other factors is recognized in other comprehensive income. In estimating OTTI losses, the Company considers among other things, (i) the length of time and the extent to which fair value has been less than cost, (ii) the financial condition and near-term prospects of the issuer, and (iii) whether it is more likely than not that the Company will not have to sell any such securities before a recovery of cost.

At June 30, 2018, the Company does not have the intent to sell any of the debt securities available-for-sale in the table above and believes that it is more likely than not, that it will not have to sell any such securities before an anticipated recovery of cost. Primarily the unrealized losses on debt securities are due to increases in market rates over the yields available at the time the underlying securities were purchased. The fair value is expected to recover on all debt securities as they approach their maturity date or re-pricing date or if market yields for such investments decline. The Company does not believe any of the securities are impaired due to reasons of credit quality.

The following table shows the gross realized gains and losses from the securities available-for-sale portfolio, including marketable equity securities. Realized gains and losses of all securities are computed using the specific identification cost basis.

	Three Months Ended   June 30,					Six Months Ended   June 30,
(Dollars in thousands)	2018		2017			2018			2017
Gross realized gains	$	—	$	655		$	2		$	1,940
Gross realized losses	—		—			(347		)	—
OTTI losses	—		(190		)	—			(190		)
Net realized gains (losses)	$	—	$	465		$	(345	)	$	1,750

At June 30, 2018 and December 31, 2017, investment securities available-for-sale with carrying values of $245.40 million and $289.05 million, respectively, were pledged as collateral for security repurchase agreements and for other purposes.

Note 4.       Loan and Lease Financings

The Company evaluates loans and leases for credit quality at least annually but more frequently if certain circumstances occur (such as material new information which becomes available and indicates a potential change in credit risk). The Company uses two methods to assess credit risk: loan or lease credit quality grades and credit risk classifications. The purpose of the loan or lease credit quality grade is to document the degree of risk associated with individual credits as well as inform management of the degree of risk in the portfolio taken as a whole. Credit risk classifications are used to categorize loans by degree of risk and to designate individual or committee approval authorities for higher risk credits at the time of origination. Credit risk classifications include categories for: Acceptable, Marginal, Special Attention, Special Risk, Restricted by Policy, Regulated and Prohibited by Law.

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All loans and leases, except residential real estate and home equity loans and consumer loans, are assigned credit quality grades on a scale from 1 to 12 with grade 1 representing superior credit quality. The criteria used to assign grades to extensions of credit that exhibit potential problems or well-defined weaknesses are primarily based upon the degree of risk and the likelihood of orderly repayment, and their effect on the Company’s safety and soundness. Loans or leases graded 7 or weaker are considered “special attention” credits and, as such, relationships in excess of $100,000 are reviewed quarterly as part of management’s evaluation of the appropriateness of the reserve for loan and lease losses. Grade 7 credits are defined as “watch” and contain greater than average credit risk and are monitored to limit the exposure to increased risk; grade 8 credits are “special mention” and, following regulatory guidelines, are defined as having potential weaknesses that deserve management’s close attention. Credits that exhibit well-defined weaknesses and a distinct possibility of loss are considered “classified” and are graded 9 through 12 corresponding to the regulatory definitions of “substandard” (grades 9 and 10) and the more severe “doubtful” (grade 11) and “loss” (grade 12).

The following table shows the credit quality grades of the recorded investment in loans and leases, segregated by class.

	Credit Quality Grades
(Dollars in thousands)	1-6		7-12		Total
June 30, 2018
Commercial and agricultural	$	1,014,535	$	33,170	$	1,047,705
Auto and light truck	559,686		20,359		580,045
Medium and heavy duty truck	274,035		2,238		276,273
Aircraft	812,726		50,770		863,496
Construction equipment	624,034		18,600		642,634
Commercial real estate	755,613		14,046		769,659
Total	$	4,040,629	$	139,183	$	4,179,812
December 31, 2017
Commercial and agricultural	$	906,074	$	23,923	$	929,997
Auto and light truck	482,455		14,361		496,816
Medium and heavy duty truck	293,318		3,617		296,935
Aircraft	815,956		28,701		844,657
Construction equipment	552,684		10,753		563,437
Commercial real estate	726,134		15,434		741,568
Total	$	3,776,621	$	96,789	$	3,873,410

For residential real estate and home equity and consumer loans, credit quality is based on the aging status of the loan and by payment activity. The following table shows the recorded investment in residential real estate and home equity and consumer loans by performing or nonperforming status. Nonperforming loans are those loans which are on nonaccrual status or are 90 days or more past due.

(Dollars in thousands)	Performing		Nonperforming		Total
June 30, 2018
Residential real estate and home equity	$	522,166	$	1,946	$	524,112
Consumer	135,699		200		135,899
Total	$	657,865	$	2,146	$	660,011
December 31, 2017
Residential real estate and home equity	$	523,803	$	2,319	$	526,122
Consumer	127,982		164		128,146
Total	$	651,785	$	2,483	$	654,268

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The following table shows the recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status.

(Dollars in thousands)	Current		30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due and Accruing		Total Accruing  Loans		Nonaccrual		Total Financing Receivables
June 30, 2018
Commercial and agricultural	$	1,044,377	$	77	$	25	$	—	$	1,044,479	$	3,226	$	1,047,705
Auto and light truck	571,355		2,298		256		—		573,909		6,136		580,045
Medium and heavy duty truck	275,945		17		—		—		275,962		311		276,273
Aircraft	830,633		12,437		—		—		843,070		20,426		863,496
Construction equipment	632,274		4,290		5,034		—		641,598		1,036		642,634
Commercial real estate	767,852		178		65		—		768,095		1,564		769,659
Residential real estate and home equity	521,540		413		213		188		522,354		1,758		524,112
Consumer	134,869		543		287		75		135,774		125		135,899
Total	$	4,778,845	$	20,253	$	5,880	$	263	$	4,805,241	$	34,582	$	4,839,823
December 31, 2017
Commercial and agricultural	$	927,113	$	281	$	—	$	—	$	927,394	$	2,603	$	929,997
Auto and light truck	485,885		2,869		21		—		488,775		8,041		496,816
Medium and heavy duty truck	296,564		—		—		—		296,564		371		296,935
Aircraft	823,638		14,570		4,492		—		842,700		1,957		844,657
Construction equipment	561,665		333		448		—		562,446		991		563,437
Commercial real estate	738,006		23		121		—		738,150		3,418		741,568
Residential real estate and home equity	521,943		1,508		352		429		524,232		1,890		526,122
Consumer	127,107		776		99		30		128,012		134		128,146
Total	$	4,481,921	$	20,360	$	5,533	$	459	$	4,508,273	$	19,405	$	4,527,678

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The following table shows impaired loans and leases, segregated by class, and the corresponding reserve for impaired loan and lease losses.

(Dollars in thousands)	Recorded Investment		Unpaid Principal Balance		Related Reserve
June 30, 2018
With no related reserve recorded:
Commercial and agricultural	$	2,992	$	2,992	$	—
Auto and light truck	5,789		5,789		—
Medium and heavy duty truck	310		310		—
Aircraft	1,237		1,237		—
Construction equipment	—		—		—
Commercial real estate	582		582		—
Residential real estate and home equity	—		—		—
Consumer	—		—		—
Total with no related reserve recorded	10,910		10,910		—
With a reserve recorded:
Commercial and agricultural	—		—		—
Auto and light truck	226		226		9
Medium and heavy duty truck	—		—		—
Aircraft	19,164		19,164		2,758
Construction equipment	941		941		182
Commercial real estate	908		908		172
Residential real estate and home equity	348		350		130
Consumer	—		—		—
Total with a reserve recorded	21,587		21,589		3,251
Total impaired loans	$	32,497	$	32,499	$	3,251
December 31, 2017
With no related reserve recorded:
Commercial and agricultural	$	2,439	$	2,439	$	—
Auto and light truck	—		—		—
Medium and heavy duty truck	371		371		—
Aircraft	1,901		1,901		—
Construction equipment	584		584		—
Commercial real estate	2,375		2,375		—
Residential real estate and home equity	—		—		—
Consumer	—		—		—
Total with no related reserve recorded	7,670		7,670		—
With a reserve recorded:
Commercial and agricultural	—		—		—
Auto and light truck	7,780		7,780		243
Medium and heavy duty truck	—		—		—
Aircraft	—		—		—
Construction equipment	344		344		108
Commercial real estate	971		971		181
Residential real estate and home equity	352		354		134
Consumer	—		—		—
Total with a reserve recorded	9,447		9,449		666
Total impaired loans	$	17,117	$	17,119	$	666

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The following table shows average recorded investment and interest income recognized on impaired loans and leases, segregated by class.

	Three Months Ended June 30,								Six Months Ended June 30,
	2018				2017				2018				2017
(Dollars in thousands)	Average Recorded Investment		Interest Income		Average Recorded Investment		Interest Income		Average Recorded Investment		Interest Income		Average Recorded Investment		Interest Income
Commercial and agricultural	$	2,998	$	—	$	7,067	$	—	$	2,921	$	—	$	4,886	$	1
Auto and light truck	7,066		—		182		—		7,446		—		133		—
Medium and heavy duty truck	319		—		—		—		334		—		—		—
Aircraft	9,126		20		6,174		—		6,097		20		7,484		—
Construction equipment	942		—		1,143		—		1,136		—		1,152		—
Commercial real estate	2,259		—		2,720		—		2,978		—		3,312		—
Residential real estate and home equity	349		4		356		4		349		8		357		8
Consumer	—		—		—		—		—		—		—		—
Total	$	23,059	$	24	$	17,642	$	4	$	21,261	$	28	$	17,324	$	9

There were no loan and lease modifications classified as a troubled debt restructuring (TDR) during the three and six months ended June 30, 2018 and one nonperforming modification classified as a TDR during the three and six months ended June 30, 2017. The classification between nonperforming and performing is determined at the time of modification. Modification programs focus on extending maturity dates or modifying payment patterns with most TDRs experiencing a combination of concessions. Modifications do not result in the contractual forgiveness of principal or interest. There were no modifications during 2018 and one modification during 2017 that resulted in an interest rate reduction below market rate. Consequently, the financial impact of the modification was immaterial.

There were no TDRs which had payment defaults within the twelve months following modification during the three and six months ended June 30, 2018 and one nonperforming TDR which had a payment default within the twelve months following modification during the three and six months ended June 30, 2017. Default occurs when a loan or lease is 90 days or more past due under the modified terms or transferred to nonaccrual.

The following table shows the recorded investment of loans and leases classified as troubled debt restructurings as of June 30, 2018 and December 31, 2017.

(Dollars in thousands)	June 30, 2018		December 31, 2017
Performing TDRs	$	348	$	352
Nonperforming TDRs	122		537
Total TDRs	$	470	$	889

Note 5.       Reserve for Loan and Lease Losses

The reserve for loan and lease loss methodology has been consistently applied for several years, with enhancements instituted periodically. Reserve ratios are reviewed quarterly and revised periodically to reflect recent loss history and to incorporate current risks and trends which may not be recognized in historical data. As the historical charge-off analysis is updated, the Company reviews the look-back periods for each business loan portfolio. Furthermore, a thorough analysis of charge-offs, non-performing asset levels, special attention outstandings and delinquency is performed in order to review portfolio trends and other factors, including specific industry risks and economic conditions, which may have an impact on the reserves and reserve ratios applied to various portfolios. The Company adjusts the calculated historical based ratio as a result of the analysis of environmental factors, principally economic risk and concentration risk. Key economic factors affecting the portfolios are growth in gross domestic product, unemployment rates, housing market trends, commodity prices, inflation and global economic and political issues. Concentration risk is impacted primarily by geographic concentration in Northern Indiana and Southwestern Lower Michigan in the business banking and commercial real estate portfolios and by collateral concentration in the specialty finance portfolios and exposure to foreign markets by geographic risk.

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The reserve for loan and lease losses is maintained at a level believed to be appropriate by the Company to absorb probable losses inherent in the loan and lease portfolio. The determination of the reserve requires significant judgment reflecting the Company’s best estimate of probable loan and lease losses related to specifically identified impaired loans and leases as well as probable losses in the remainder of the various loan and lease portfolios. For purposes of determining the reserve, the Company has segmented loans and leases into classes based on the associated risk within these segments. The Company has determined that eight classes exist within the loan and lease portfolio. The methodology for assessing the appropriateness of the reserve consists of several key elements, which include: specific reserves for impaired loans, formula reserves for each business lending division portfolio including percentage allocations for special attention loans and leases not deemed impaired, and reserves for pooled homogeneous loans and leases. The Company’s evaluation is based upon a continuing review of these portfolios, estimates of customer performance, collateral values and dispositions, and assessments of economic and geopolitical events, all of which are subject to judgment and will change.

The following table shows the changes in the reserve for loan and lease losses, segregated by class, for the three months ended June 30, 2018 and 2017.

(Dollars in thousands)	Commercial and agricultural			Auto and light truck		Medium and heavy duty truck			Aircraft			Construction equipment			Commercial real estate			Residential real estate and home equity			Consumer		Total
June 30, 2018
Balance, beginning of period	$	17,609		$	10,810	$	4,493		$	34,836		$	10,917		$	14,770		$	3,565		$	1,331	$	98,331
Charge-offs	—			84		—			—			—			—			—			221		305
Recoveries	41			13		—			5			26			4			7			68		164
Net charge-offs (recoveries)	(41		)	71		—			(5		)	(26		)	(4		)	(7		)	153		141
Provision (recovery of provision)	981			1,337		(151		)	1,931			193			366			(8		)	168		4,817
Balance, end of period	$	18,631		$	12,076	$	4,342		$	36,772		$	11,136		$	15,140		$	3,564		$	1,346	$	103,007
June 30, 2017
Balance, beginning of period	$	15,989		$	9,772	$	4,676		$	32,008		$	8,932		$	13,868		$	3,592		$	1,281	$	90,118
Charge-offs	261			61		—			654			27			—			33			150		1,186
Recoveries	89			5		—			15			7			48			16			64		244
Net charge-offs (recoveries)	172			56		—			639			20			(48		)	17			86		942
Provision (recovery of provision)	382			1,727		164			453			337			(441		)	32			84		2,738
Balance, end of period	$	16,199		$	11,443	$	4,840		$	31,822		$	9,249		$	13,475		$	3,607		$	1,279	$	91,914

The following table shows the changes in the reserve for loan and lease losses, segregated by class, for the six months ended June 30, 2018 and 2017.

(Dollars in thousands)	Commercial and agricultural loans			Auto and light truck			Medium and heavy duty truck			Aircraft			Construction equipment			Commercial real estate			Residential real estate and home equity			Consumer loans		Total
June 30, 2018
Balance, beginning of period	$	16,228		$	10,103		$	4,844		$	34,619		$	9,343		$	14,792		$	3,666		$	1,288	$	94,883
Charge-offs	25			400			—			29			5			7			11			384		861
Recoveries	90			19			—			49			45			25			13			141		382
Net charge-offs (recoveries)	(65		)	381			—			(20		)	(40		)	(18		)	(2		)	243		479
Provision (recovery of provision)	2,338			2,354			(502		)	2,133			1,753			330			(104		)	301		8,603
Balance, end of period	$	18,631		$	12,076		$	4,342		$	36,772		$	11,136		$	15,140		$	3,564		$	1,346	$	103,007
June 30, 2017
Balance, beginning of period	$	14,668		$	8,064		$	4,740		$	34,352		$	8,207		$	13,677		$	3,550		$	1,285	$	88,543
Charge-offs	469			82			—			1,757			27			2			37			370		2,744
Recoveries	684			1,132			—			198			29			98			87			149		2,377
Net charge-offs (recoveries)	(215		)	(1,050		)	—			1,559			(2		)	(96		)	(50		)	221		367
Provision (recovery of provision)	1,316			2,329			100			(971		)	1,040			(298		)	7			215		3,738
Balance, end of period	$	16,199		$	11,443		$	4,840		$	31,822		$	9,249		$	13,475		$	3,607		$	1,279	$	91,914

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The following table shows the reserve for loan and lease losses and recorded investment in loans and leases, segregated by class, separated between individually and collectively evaluated for impairment as of June 30, 2018 and December 31, 2017.

(Dollars in thousands)	Commercial and agricultural loans		Auto and light truck		Medium and heavy duty truck		Aircraft		Construction equipment		Commercial real estate		Residential real estate and home equity		Consumer loans		Total
June 30, 2018
Reserve for loan and lease losses
Ending balance, individually evaluated for impairment	$	—	$	9	$	—	$	2,758	$	182	$	172	$	130	$	—	$	3,251
Ending balance, collectively evaluated for impairment	18,631		12,067		4,342		34,014		10,954		14,968		3,434		1,346		99,756
Total reserve for loan and lease losses	$	18,631	$	12,076	$	4,342	$	36,772	$	11,136	$	15,140	$	3,564	$	1,346	$	103,007
Recorded investment in loans
Ending balance, individually evaluated for impairment	$	2,992	$	6,015	$	310	$	20,401	$	941	$	1,490	$	348	$	—	$	32,497
Ending balance, collectively evaluated for impairment	1,044,713		574,030		275,963		843,095		641,693		768,169		523,764		135,899		4,807,326
Total recorded investment in loans	$	1,047,705	$	580,045	$	276,273	$	863,496	$	642,634	$	769,659	$	524,112	$	135,899	$	4,839,823
December 31, 2017
Reserve for loan and lease losses
Ending balance, individually evaluated for impairment	$	—	$	243	$	—	$	—	$	108	$	181	$	134	$	—	$	666
Ending balance, collectively evaluated for impairment	16,228		9,860		4,844		34,619		9,235		14,611		3,532		1,288		94,217
Total reserve for loan and lease losses	$	16,228	$	10,103	$	4,844	$	34,619	$	9,343	$	14,792	$	3,666	$	1,288	$	94,883
Recorded investment in loans
Ending balance, individually evaluated for impairment	$	2,439	$	7,780	$	371	$	1,901	$	928	$	3,346	$	352	$	—	$	17,117
Ending balance, collectively evaluated for impairment	927,558		489,036		296,564		842,756		562,509		738,222		525,770		128,146		4,510,561
Total recorded investment in loans	$	929,997	$	496,816	$	296,935	$	844,657	$	563,437	$	741,568	$	526,122	$	128,146	$	4,527,678

Note 6.       Mortgage Servicing Rights

The Company recognizes the rights to service residential mortgage loans for others as separate assets, whether the servicing rights are acquired through a separate purchase or through the sale of originated loans with servicing rights retained. The Company allocates a portion of the total proceeds of a mortgage loan to servicing rights based on the relative fair value. The unpaid principal balance of residential mortgage loans serviced for third parties was $744.40 million and $752.99 million at June 30, 2018 and December 31, 2017, respectively.

Mortgage servicing rights (MSRs) are evaluated for impairment at each reporting date. For purposes of impairment measurement, MSRs are stratified based on the predominant risk characteristics of the underlying servicing, principally by loan type. If temporary impairment exists within a tranche, a valuation allowance is established through a charge to income equal to the amount by which the carrying value exceeds the fair value. If it is later determined all or a portion of the temporary impairment no longer exists for a particular tranche, the valuation allowance is reduced through a recovery of income.

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The following table shows changes in the carrying value of MSRs and the associated valuation allowance.

	Three Months Ended   June 30,						Six Months Ended   June 30,
(Dollars in thousands)	2018			2017			2018			2017
Mortgage servicing rights:
Balance at beginning of period	$	4,356		$	4,281		$	4,349		$	4,297
Additions	202			246			445			493
Amortization	(235		)	(288		)	(471		)	(551		)
Sales	—			—			—			—
Carrying value before valuation allowance at end of period	4,323			4,239			4,323			4,239
Valuation allowance:
Balance at beginning of period	—			—			—			—
Impairment recoveries	—			—			—			—
Balance at end of period	$	—		$	—		$	—		$	—
Net carrying value of mortgage servicing rights at end of period	$	4,323		$	4,239		$	4,323		$	4,239
Fair value of mortgage servicing rights at end of period	$	7,536		$	7,134		$	7,536		$	7,134

At June 30, 2018 and 2017, the fair value of MSRs exceeded the carrying value reported in the Statements of Financial Condition by $3.21 million and $2.90 million, respectively. This difference represents increases in the fair value of certain MSRs that could not be recorded above cost basis.

Mortgage loan contractual servicing fees, including late fees and ancillary income, were $0.64 million and $0.69 million for the three months ended June 30, 2018 and 2017, respectively. Mortgage loan contractual servicing fees, including late fees and ancillary income, were $1.30 million and $1.37 million for the six months ended June 30, 2018 and 2017, respectively. Mortgage loan contractual servicing fees are included in Mortgage Banking on the Statements of Income.

Note 7.       Commitments and Financial Instruments with Off-Balance-Sheet Risk

Commitments — 1st Source Bank (Bank), a subsidiary of 1st Source Corporation, has made investments directly in various tax-advantaged and other operating partnerships formed by third parties. The Bank’s investments are primarily related to investments promoting affordable housing, community development and renewable energy sources. As a limited partner in these operating partnerships, we are allocated credits and deductions associated with the underlying properties. The Bank has determined that it is not the primary beneficiary of these investments because the general partners have the power to direct the activities that most significantly influence the economic performance of their respective partnerships. At June 30, 2018 and December 31, 2017, investment balances, including all legally binding commitments to fund future investments totaled $14.54 million and $23.76 million, respectively. In addition, the Bank had a liability for all legally binding unfunded commitments of $14.13 million and $15.71 million at June 30, 2018 and December 31, 2017, respectively.

Financial Instruments with Off-Balance-Sheet Risk — 1st Source and its subsidiaries are parties to financial instruments with off-balance-sheet risk in the normal course of business. These off-balance-sheet financial instruments include commitments to originate and sell loans and standby letters of credit. The instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the Statements of Financial Condition.

The following table shows financial instruments whose contract amounts represent credit risk.

(Dollars in thousands)	June 30, 2018		December 31, 2017
Amounts of commitments:
Loan commitments to extend credit	$	1,022,077	$	1,030,334
Standby letters of credit	$	30,911	$	29,961
Commercial and similar letters of credit	$	2,113	$	1,837

The exposure to credit loss in the event of nonperformance by the other party to the financial instruments for loan commitments and standby letters of credit is represented by the dollar amount of those instruments. The Company uses the same credit policies and collateral requirements in making commitments and conditional obligations as it does for on-balance-sheet instruments.

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The Bank grants mortgage loan commitments to borrowers, subject to normal loan underwriting standards. The interest rate risk associated with these loan commitments is managed by entering into contracts for future deliveries of loans. Loan commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements.

Standby letters of credit are conditional commitments that guarantee the performance of a client to a third party. The credit risk involved in and collateral obtained when issuing standby letters of credit is essentially the same as that involved in extending loan commitments to clients. Standby letters of credit generally have terms ranging from six months to one year.

Commercial letters of credit are issued specifically to facilitate commerce and typically result in the commitment being drawn on when the underlying transaction is consummated between the customer and the third party. Commercial letters of credit generally have terms ranging from three months to six months.

Note 8.       Derivative Financial Instruments

Commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans are considered derivative instruments. See Note 7 for further information.

The Company has certain interest rate derivative positions that are not designated as hedging instruments. Derivative assets and liabilities are recorded at fair value on the balance sheet and do not take into account the effects of master netting agreements. Master netting agreements allow the Company to settle all derivative contracts held with a single counterparty on a net basis, and to offset net derivative positions with related collateral, where applicable. These derivative positions relate to transactions in which the Company enters into an interest rate swap with a client while at the same time entering into an offsetting interest rate swap with another financial institution. In connection with each transaction, the Company agrees to pay interest to the client on a notional amount at a variable interest rate and receive interest from the client on the same notional amount at a fixed interest rate. At the same time, the Company agrees to pay another financial institution the same fixed interest rate on the same notional amount and receive the same variable interest rate on the same notional amount. The transaction allows the client to effectively convert a variable rate loan to a fixed rate. Because the terms of the swaps with the customers and the other financial institutions offset each other, with the only difference being counterparty credit risk, changes in the fair value of the underlying derivative contracts are not materially different and do not significantly impact the Company’s results of operations.

The following table shows the amounts of non-hedging derivative financial instruments.

			Asset derivatives			Liability derivatives
(Dollars in thousands)	Notional or contractual amount		Statement of Financial Condition classification	Fair value		Statement of Financial Condition classification	Fair value
June 30, 2018
Interest rate swap contracts	$	789,268	Other assets	$	7,349	Other liabilities	$	7,480
Loan commitments	6,931		Mortgages held for sale	123		N/A	—
Forward contracts - mortgage loan	13,873		N/A	—		Mortgages held for sale	47
Total	$	810,072		$	7,472		$	7,527
December 31, 2017
Interest rate swap contracts	$	756,550	Other assets	$	5,167	Other liabilities	$	5,262
Loan commitments	8,504		Mortgages held for sale	66		N/A	—
Forward contracts - mortgage loan	19,390		N/A	—		Mortgages held for sale	10
Total	$	784,444		$	5,233		$	5,272

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The following table shows the amounts included in the Statements of Income for non-hedging derivative financial instruments.

		Gain (loss)
		Three Months Ended   June 30,						Six Months Ended   June 30,
(Dollars in thousands)	Statement of Income classification	2018			2017			2018			2017
Interest rate swap contracts	Other expense	$	(35	)	$	—		$	(36	)	$	20
Interest rate swap contracts	Other income	246			92			579			211
Loan commitments	Mortgage banking	61			(18		)	57			37
Forward contracts - mortgage loan	Mortgage banking	(40		)	117			(37		)	(195		)
Total		$	232		$	191		$	563		$	73

The following table shows the offsetting of financial assets and derivative assets.

							Gross Amounts Not Offset in the Statement of Financial Condition
(Dollars in thousands)	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Statement of Financial Condition		Net Amounts of Assets Presented in the Statement of Financial Condition		Financial Instruments		Cash Collateral Received		Net Amount
June 30, 2018
Interest rate swaps	$	7,355	$	6	$	7,349	$	—	$	—	$	7,349
December 31, 2017
Interest rate swaps	$	5,194	$	27	$	5,167	$	—	$	—	$	5,167

The following table shows the offsetting of financial liabilities and derivative liabilities.

							Gross Amounts Not Offset in the Statement of Financial Condition
(Dollars in thousands)	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Statement of Financial Condition		Net Amounts of Liabilities Presented in the Statement of Financial Condition		Financial Instruments		Cash Collateral Pledged		Net Amount
June 30, 2018
Interest rate swaps	$	7,486	$	6	$	7,480	$	—	$	4,715	$	2,765
Repurchase agreements	106,861		—		106,861		106,861		—		—
Total	$	114,347	$	6	$	114,341	$	106,861	$	4,715	$	2,765
December 31, 2017
Interest rate swaps	$	5,289	$	27	$	5,262	$	—	$	2,705	$	2,557
Repurchase agreements	149,835		—		149,835		149,835		—		—
Total	$	155,124	$	27	$	155,097	$	149,835	$	2,705	$	2,557

If a default in performance of any obligation of a repurchase agreement occurs, each party will set-off property held in respect of transactions against obligations owing in respect of any other transactions. At June 30, 2018 and December 31, 2017, repurchase agreements had a remaining contractual maturity of $104.45 million and $148.22 million in overnight, $2.41 million and $1.32 million in up to 30 days, and $0.00 million and $0.30 million in greater than 90 days, respectively and were collateralized by U.S. Treasury and Federal agencies securities.

Note 9.Earnings Per Share

Earnings per common share is computed using the two-class method. Basic earnings per common share is computed by dividing net income available to common shareholders by the weighted-average number of common shares outstanding during the applicable period, excluding outstanding participating securities. Participating securities include non-vested restricted stock awards. Non-vested restricted stock awards are considered participating securities to the extent the holders of these securities receive non-forfeitable dividends at the same rate as holders of common stock. Diluted earnings per common share is computed using the weighted-average number of shares determined for the basic earnings per common share computation plus the dilutive effect of stock compensation using the treasury stock method.

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Stock options, where the exercise price was greater than the average market price of the common shares, were excluded from the computation of diluted earnings per common share because the result would have been antidilutive. There were no stock options outstanding as of June 30, 2018 and 2017.

The following table presents a reconciliation of the number of shares used in the calculation of basic and diluted earnings per common share.

	Three Months Ended   June 30,				Six Months Ended   June 30,
(Dollars in thousands - except per share amounts)	2018		2017		2018		2017
Distributed earnings allocated to common stock	$	6,225	$	4,923	$	11,929	$	9,586
Undistributed earnings allocated to common stock	15,591		11,618		28,869		23,040
Net earnings allocated to common stock	21,816		16,541		40,798		32,626
Net earnings allocated to participating securities	148		128		282		249
Net income allocated to common stock and participating securities	$	21,964	$	16,669	$	41,080	$	32,875
Weighted average shares outstanding for basic earnings per common share	25,958,128		25,927,032		25,954,278		25,915,280
Dilutive effect of stock compensation	—		—		—		—
Weighted average shares outstanding for diluted earnings per common share	25,958,128		25,927,032		25,954,278		25,915,280
Basic earnings per common share	$	0.84	$	0.64	$	1.57	$	1.26
Diluted earnings per common share	$	0.84	$	0.64	$	1.57	$	1.26

Note 10.Stock Based Compensation

As of June 30, 2018, the Company had four active stock-based employee compensation plans, which are more fully described in Note 16 of the Consolidated Financial Statements in 1st Source’s Annual Report on Form 10-K for the year ended December 31, 2017. These plans include three executive stock award plans, the Executive Incentive Plan, the Restricted Stock Award Plan, the Strategic Deployment Incentive Plan; and the Employee Stock Purchase Plan. The 2011 Stock Option Plan was approved by the shareholders on April 21, 2011 but the Company had not made any grants through June 30, 2018.

Stock-based compensation expense for all stock-based compensation awards granted is based on the grant-date fair value. For all awards except stock option awards, the grant date fair value is either the fair market value per share or book value per share (corresponding to the type of stock awarded) as of the grant date. For stock option awards, the grant date fair value is estimated using the Black-Scholes option pricing model. For all awards the Company recognizes these compensation costs on a straight-line basis over the requisite service period of the award, for which the Company uses the related vesting term.

Total fair value of options vested and expensed was zero for the six months ended June 30, 2018 and 2017. As of June 30, 2018 and 2017 there were no outstanding stock options. There were no stock options exercised during the six months ended June 30, 2018 and 2017. All shares issued in connection with stock option exercises are issued from available treasury stock.

As of June 30, 2018, there was $6.69 million of total unrecognized compensation cost related to non-vested share-based compensation arrangements. That cost is expected to be recognized over a weighted-average period of 3.25 years.

Note 11.Accumulated Other Comprehensive Income (Loss)

The following table presents reclassifications out of accumulated other comprehensive income (loss) related to unrealized gains and losses on available-for-sale securities.

	Three Months Ended   June 30,					Six Months Ended   June 30,						Affected Line Item in the Statements of Income
(Dollars in thousands)	2018		2017			2018			2017
Realized gains (losses) included in net income	$	—	$	465		$	(345	)	$	1,750		Gains (losses) on investment securities available-for-sale
	—		465			(345		)	1,750			Income before income taxes
Tax effect	—		(175		)	83			(657		)	Income tax expense
Net of tax	$	—	$	290		$	(262	)	$	1,093		Net income

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Note 12.Income Taxes

The total amount of unrecognized tax benefits that would affect the effective tax rate if recognized was zero at June 30, 2018 and $0.72 million at December 31, 2017. Interest and penalties are recognized through the income tax provision. For the six months ended June 30, 2018 and 2017, the Company recognized $(0.09) million and $0.04 million in interest or penalties, respectively. There was $0.00 million and $0.09 million in accrued interest and penalties at June 30, 2018 and December 31, 2017, respectively.

Tax years that remain open and subject to audit include the federal 2014-2017 years and the Indiana 2014-2017 years. Additionally, the Company reached a state tax settlement for the 2015-2017 years and as a result, recorded a reduction of unrecognized tax benefits in the amount of $1.05 million. The Company does not anticipate a significant change in the amount of uncertain tax positions within the next 12 months.

The Tax Cuts and Jobs Act was enacted on December 22, 2017. The Act reduces the U.S. federal corporate tax rate from 35% to 21%, effective January 1, 2018. At June 30, 2018 and December 31, 2017, the Company had not completed its accounting for the tax effects of enactment of the Act; however, in certain cases, as described below, the Company made a reasonable estimate of the effects on its existing deferred tax balances. The Company will continue to make and refine its calculations as additional analysis is completed. In addition, the Company's estimates may also be affected as it gains a more thorough understanding of the tax law.

Provisional amounts

Deferred tax assets and liabilities: The Company remeasured certain deferred tax assets and liabilities based on the rates at which it expects to reverse in the future, which is generally 21%. However, the Company is still analyzing certain aspects of the Act and refining its calculations, which could potentially affect the measurement of these balances or potentially give rise to new deferred tax amounts. The provisional amount recorded related to the remeasurement of its deferred tax balance was a benefit of $2.61 million, which was included as a component of Income Tax Expense in the December 31, 2017 Consolidated Statements of Income and decreased the effective rate by 2.6%.

Further, at June 30, 2018 and December 31, 2017, the Company was unable to fully revalue the deferred tax liabilities associated with its partnership investments in renewable energy and affordable housing and estimated the deferred tax liability associated with those projects to be $1.92 million. This estimation was necessary due to incomplete information for 2017 operations from those partnerships. Upon receipt of the partnership Form1065 K-1’s, the Company will complete the revaluation of those related deferred tax liabilities as provided by the U.S. Securities and Exchange Commission’s SAB No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act.

Note 13.Fair Value Measurements

The Company records certain assets and liabilities at fair value. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value measurements are also utilized to determine the initial value of certain assets and liabilities, to perform impairment assessments, and for disclosure purposes. The Company uses quoted market prices and observable inputs to the maximum extent possible when measuring fair value. In the absence of quoted market prices, various valuation techniques are utilized to measure fair value. When possible, observable market data for identical or similar financial instruments is used in the valuation. When market data is not available, fair value is determined using valuation models that incorporate management’s estimates of the assumptions a market participant would use in pricing the asset or liability.

Fair value measurements are classified within one of three levels based on the observability of the inputs used to determine fair value, as follows:

• Level 1 — The valuation is based on quoted prices in active markets for identical instruments.

• Level 2 — The valuation is based on observable inputs such as quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market.

• Level 3 — The valuation is based on unobservable inputs that are supported by minimal or no market activity and that are significant to the fair value of the instrument. Level 3 valuations are typically performed using pricing models, discounted cash flow methodologies, or similar techniques that incorporate management’s own estimates of assumptions that market participants would use in pricing the instrument, or valuations that require significant management judgment or estimation.

A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.

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The Company elected fair value accounting for mortgages held for sale. The Company believes the election for mortgages held for sale (which are economically hedged with free-standing derivatives) will reduce certain timing differences and better match changes in the value of these assets with changes in the value of derivatives used as economic hedges for these assets. At June 30, 2018 and December 31, 2017, all mortgages held for sale were carried at fair value.

The following table shows the differences between the fair value carrying amount of mortgages held for sale measured at fair value and the aggregate unpaid principal amount the Company is contractually entitled to receive at maturity.

(Dollars in thousands)	Fair value carrying amount		Aggregate unpaid principal		Excess of fair value carrying amount over (under) unpaid principal
June 30, 2018
Mortgages held for sale reported at fair value	$	8,235	$	8,051	$	184	(1)
December 31, 2017
Mortgages held for sale reported at fair value	$	13,123	$	12,967	$	156	(1)

(1) The excess of fair value carrying amount over (under) unpaid principal is included in mortgage banking income and includes changes in fair value at and subsequent to funding and gains and losses on the related loan commitment prior to funding.

Financial Instruments on Recurring Basis:

The following is a description of the valuation methodologies used for financial instruments measured at fair value on a recurring basis:

Investment securities available-for-sale are valued primarily by a third party pricing agent. Prices supplied by the independent pricing agent, as well as their pricing methodologies and assumptions, are reviewed by the Company for reasonableness and to ensure such prices are aligned with market levels. In general, the Company’s investment securities do not possess a complex structure that could introduce greater valuation risk. The portfolio mainly consists of traditional investments including U.S. Treasury and Federal agencies securities, Federal agency mortgage pass-through securities, and general obligation and revenue municipal bonds. Pricing for such instruments is fairly generic and is easily obtained. On a quarterly basis, prices supplied by the pricing agent are validated by comparison to prices obtained from other third party sources for a material portion of the portfolio.

The valuation policy and procedures for Level 3 fair value measurements of available-for-sale debt securities are decided through collaboration between management of the Corporate Accounting and Funds Management departments. The changes in fair value measurement for Level 3 securities are analyzed on a periodic basis under a collaborative framework with the aforementioned departments. The methodology and variables used for input are derived from the combination of observable and unobservable inputs. The unobservable inputs are determined through internal assumptions that may vary from period to period due to external factors, such as market movement and credit rating adjustments.

Both the market and income valuation approaches are implemented using the following types of inputs:

• U.S. treasuries are priced using the market approach and utilizing live data feeds from active market exchanges for identical securities.

• Government-sponsored agency debt securities and corporate bonds are primarily priced using available market information through processes such as benchmark curves, market valuations of like securities, sector groupings and matrix pricing.

• Other government-sponsored agency securities, mortgage-backed securities and some of the actively traded REMICs and CMOs, are primarily priced using available market information including benchmark yields, prepayment speeds, spreads and volatility of similar securities.

• Inactively traded government-sponsored agency securities are primarily priced using consensus pricing and dealer quotes.

• State and political subdivisions are largely grouped by characteristics, i.e., geographical data and source of revenue in trade dissemination systems. Since some securities are not traded daily and due to other grouping limitations, active market quotes are often obtained using benchmarking for like securities. Local direct placement municipal securities, with very little market activity, are priced using an appropriate market yield curve, which includes a credit spread assumption.

• Marketable equity (common) securities are primarily priced using the market approach and utilizing live data feeds from active market exchanges for identical securities.

24

Mortgages held for sale and the related loan commitments and forward contracts (hedges) are valued using a market value approach and utilizing an appropriate current market yield and a loan commitment closing rate based on historical analysis.

Interest rate swap positions, both assets and liabilities, are valued by a third party pricing agent using an income approach and utilizing models that use as their basis readily observable market parameters. This valuation process considers various factors including interest rate yield curves, time value and volatility factors. Validation of third party agent valuations is accomplished by comparing those values to the Company’s swap counterparty valuations. Management believes an adjustment is required to “mid-market” valuations for derivatives tied to its performing loan portfolio to recognize the imprecision and related exposure inherent in the process of estimating expected credit losses as well as velocity of deterioration evident with systemic risks embedded in these portfolios. Any change in the mid-market derivative valuation adjustment will be recognized immediately through the Consolidated Statements of Income.

The following table shows the balance of assets and liabilities measured at fair value on a recurring basis.

(Dollars in thousands)	Level 1		Level 2		Level 3		Total
June 30, 2018
Assets:
Investment securities available-for-sale:
U.S. Treasury and Federal agencies securities	$	33,671	$	490,463	$	—	$	524,134
U.S. States and political subdivisions securities	—		94,261		1,641		95,902
Mortgage-backed securities — Federal agencies	—		302,279		—		302,279
Corporate debt securities	—		45,327		—		45,327
Foreign government and other securities	—		—		707		707
Total debt securities available-for-sale	33,671		932,330		2,348		968,349
Mortgages held for sale	—		8,235		—		8,235
Accrued income and other assets (interest rate swap agreements)	—		7,349		—		7,349
Total	$	33,671	$	947,914	$	2,348	$	983,933
Liabilities:
Accrued expenses and other liabilities (interest rate swap agreements)	$	—	$	7,480	$	—	$	7,480
Total	$	—	$	7,480	$	—	$	7,480
December 31, 2017
Assets:
Investment securities available-for-sale:
U.S. Treasury and Federal agencies securities	$	27,971	$	440,148	$	—	$	468,119
U.S. States and political subdivisions securities	—		113,845		2,155		116,000
Mortgage-backed securities — Federal agencies	—		287,910		—		287,910
Corporate debt securities	—		31,294		—		31,294
Foreign government and other securities	—		—		710		710
Total debt securities available-for-sale	27,971		873,197		2,865		904,033
Mortgages held for sale	—		13,123		—		13,123
Accrued income and other assets (interest rate swap agreements)	—		5,167		—		5,167
Total	$	27,971	$	891,487	$	2,865	$	922,323
Liabilities:
Accrued expenses and other liabilities (interest rate swap agreements)	$	—	$	5,262	$	—	$	5,262
Total	$	—	$	5,262	$	—	$	5,262

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The following table shows changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the quarter ended June 30, 2018 and 2017.

(Dollars in thousands)	U.S. States and political subdivisions securities			Foreign government and other securities			Investment securities available-for-sale
Beginning balance April 1, 2018	$	2,155		$	708		$	2,863
Total gains or losses (realized/unrealized):
Included in earnings	—			—			—
Included in other comprehensive income	4			(1		)	3
Purchases	—			—			—
Issuances	—			—			—
Sales	—			—			—
Settlements	—			—			—
Maturities	(518		)	—			(518		)
Transfers into Level 3	—			—			—
Transfers out of Level 3	—			—			—
Ending balance June 30, 2018	$	1,641		$	707		$	2,348
Beginning balance April 1, 2017	$	2,018		$	804		$	2,822
Total gains or losses (realized/unrealized):
Included in earnings	—			—			—
Included in other comprehensive income	11			(2		)	9
Purchases	287			—			287
Issuances	—			—			—
Sales	—			—			—
Settlements	—			—			—
Maturities	(515		)	(500		)	(1,015		)
Transfers into Level 3	—			—			—
Transfers out of Level 3	—			—			—
Ending balance June 30, 2017	$	1,801		$	302		$	2,103

There were no gains or losses for the period included in earnings attributable to the change in unrealized gains or losses relating to assets and liabilities still held at June 30, 2018 or 2017. No transfers between levels occurred during the three months ended June 30, 2018 or 2017.

The following table shows the valuation methodology and unobservable inputs for Level 3 assets and liabilities measured at fair value on a recurring basis.

(Dollars in thousands)	Fair Value		Valuation Methodology	Unobservable Inputs	Range of Inputs
June 30, 2018
Debt securities available-for sale
Direct placement municipal securities	$	1,641	Discounted cash flows	Credit spread assumption	0.11% - 3.02%
Foreign government	$	707	Discounted cash flows	Market yield assumption	0.00% - 1.21%
December 31, 2017
Debt securities available-for sale
Direct placement municipal securities	$	2,155	Discounted cash flows	Credit spread assumption	2.21% - 2.93%
Foreign government	$	710	Discounted cash flows	Market yield assumption	0.35% - 1.23%

The sensitivity to changes in the unobservable inputs and their impact on the fair value measurement can be significant. The significant unobservable input for direct placement municipal securities are the credit spread assumptions used to determine the fair value measure. An increase (decrease) in the estimated spread assumption of the market will decrease (increase) the fair value measure of the securities. The significant unobservable input for foreign government securities are the market yield assumptions. The market yield assumption is negatively correlated to the fair value measure. An increase (decrease) in the determined market yield assumption will decrease (increase) the fair value measurement.

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Financial Instruments on Non-recurring Basis:

The Company may be required, from time to time, to measure certain other financial assets at fair value on a non-recurring basis in accordance with GAAP. These adjustments to fair value usually result from application of lower of cost or market accounting or impairment charges of individual assets.

The Credit Policy Committee (CPC), a management committee, is responsible for overseeing the valuation processes and procedures for Level 3 measurements of impaired loans, other real estate and repossessions. The CPC reviews these assets on a quarterly basis to determine the accuracy of the observable inputs, generally third party appraisals, auction values, values derived from trade publications and data submitted by the borrower, and the appropriateness of the unobservable inputs, generally discounts due to current market conditions and collection issues. The CPC establishes discounts based on asset type and valuation source; deviations from the standard are documented. The discounts are reviewed periodically, annually at a minimum, to determine they remain appropriate. Consideration is given to current trends in market values for the asset categories and gains and losses on sales of similar assets. The Loan and Funds Management Committee of the Board of Directors is responsible for overseeing the CPC.

Discounts vary depending on the nature of the assets and the source of value. Aircraft are generally valued using quarterly trade publications adjusted for engine time, condition, maintenance programs, discounted by 10%. Likewise, autos are valued using current auction values, discounted by 10%; medium and heavy duty trucks are valued using trade publications and auction values, discounted by 15%. Construction equipment is generally valued using trade publications and auction values, discounted by 20%. Real estate is valued based on appraisals or evaluations, discounted by 20% with higher discounts for property in poor condition or property with characteristics which may make it more difficult to market. Commercial loans subject to borrowing base certificates are generally discounted by 20% for receivables and 40% - 75% for inventory with higher discounts when monthly borrowing base certificates are not required or received.

Impaired loans and related write-downs are based on the fair value of the underlying collateral if repayment is expected solely from the collateral. Collateral values are reviewed quarterly and estimated using customized discounting criteria, appraisals and dealer and trade magazine quotes which are used in a market valuation approach. In accordance with fair value measurements, only impaired loans for which a reserve for loan loss has been established based on the fair value of collateral require classification in the fair value hierarchy. As a result, only a portion of the Company’s impaired loans are classified in the fair value hierarchy.

Partnership investments and the adjustments to fair value primarily result from application of lower of cost or fair value accounting. The partnership investments are priced using financial statements provided by the partnerships. Quantitative unobservable inputs are not reasonably available for reporting purposes.

The Company has established MSRs valuation policies and procedures based on industry standards and to ensure valuation methodologies are consistent and verifiable. MSRs and related adjustments to fair value result from application of lower of cost or fair value accounting. For purposes of impairment, MSRs are stratified based on the predominant risk characteristics of the underlying servicing, principally by loan type. The fair value of each tranche of the servicing portfolio is estimated by calculating the present value of estimated future net servicing cash flows, taking into consideration actual and expected mortgage loan prepayment rates, discount rates, servicing costs, and other economic factors. Prepayment rates and discount rates are derived through a third party pricing agent. Changes in the most significant inputs, including prepayment rates and discount rates, are compared to the changes in the fair value measurements and appropriate resolution is made. A fair value analysis is also obtained from an independent third party agent and compared to the internal valuation for reasonableness. MSRs do not trade in an active, open market with readily observable prices and though sales of MSRs do occur, precise terms and conditions typically are not readily available and the characteristics of the Company’s servicing portfolio may differ from those of any servicing portfolios that do trade.

Other real estate is based on the fair value of the underlying collateral less expected selling costs. Collateral values are estimated primarily using appraisals and reflect a market value approach. Fair values are reviewed quarterly and new appraisals are obtained annually. Repossessions are similarly valued.

For assets measured at fair value on a nonrecurring basis the following represents impairment charges (recoveries) recognized on these assets during the quarter ended June 30, 2018: impaired loans - $0.00 million; partnership investments - $0.00 million;mortgage servicing rights - $0.00 million; repossessions - $0.28 million; and other real estate - $0.00 million.

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The following table shows the carrying value of assets measured at fair value on a non-recurring basis.

(Dollars in thousands)	Level 1		Level 2		Level 3		Total
June 30, 2018
Impaired loans - collateral based	$	—	$	—	$	17,602	$	17,602
Accrued income and other assets (partnership investments)	—		—		1,000		1,000
Accrued income and other assets (mortgage servicing rights)	—		—		4,323		4,323
Accrued income and other assets (repossessions)	—		—		9,389		9,389
Accrued income and other assets (other real estate)	—		—		133		133
Total	$	—	$	—	$	32,447	$	32,447
December 31, 2017
Impaired loans - collateral based	$	—	$	—	$	7,994	$	7,994
Accrued income and other assets (partnership investments)	—		—		1,000		1,000
Accrued income and other assets (mortgage servicing rights)	—		—		4,349		4,349
Accrued income and other assets (repossessions)	—		—		10,114		10,114
Accrued income and other assets (other real estate)	—		—		1,312		1,312
Total	$	—	$	—	$	24,769	$	24,769

The following table below shows the valuation methodology and unobservable inputs for Level 3 assets and liabilities measured at fair value on a non-recurring basis.

(Dollars in thousands)	Carrying Value		Fair Value		Valuation Methodology	Unobservable Inputs	Range of Inputs
June 30, 2018
Impaired loans	$	17,602	$	17,602	Collateral based measurements including appraisals, trade publications, and auction values	Discount for lack of marketability and current conditions	10% -30%
Mortgage servicing rights	4,323		7,536		Discounted cash flows	Constant prepayment rate (CPR)	7.1% - 22.5%
						Discount rate	10.1% - 13.0%
Repossessions	9,389		9,875		Appraisals, trade publications and auction values	Discount for lack of marketability	4% - 10%
Other real estate	133		176		Appraisals	Discount for lack of marketability	8% - 61%
December 31, 2017
Impaired loans	$	7,994	$	7,994	Collateral based measurements including appraisals, trade publications, and auction values	Discount for lack of marketability and current conditions	3% - 20%
Mortgage servicing rights	4,349		7,187		Discounted cash flows	Constant prepayment rate (CPR)	8.6% - 20.7%
						Discount rate	9.6% - 12.5%
Repossessions	10,114		10,493		Appraisals, trade publications and auction values	Discount for lack of marketability	3% - 10%
Other real estate	1,312		1,441		Appraisals	Discount for lack of marketability	7% - 9%

GAAP requires disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring or non-recurring basis.

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The following table shows the fair values of the Company’s financial instruments.

(Dollars in thousands)	Carrying or Contract Value		Fair Value		Level 1		Level 2		Level 3
June 30, 2018
Assets:
Cash and due from banks	$	71,102	$	71,102	$	71,102	$	—	$	—
Federal funds sold and interest bearing deposits with other banks	73,358		73,358		73,358		—		—
Investment securities, available-for-sale	968,349		968,349		33,671		932,330		2,348
Other investments	28,159		28,159		28,159		—		—
Mortgages held for sale	8,235		8,235		—		8,235		—
Loans and leases, net of reserve for loan and lease losses	4,736,816		4,690,436		—		—		4,690,436
Mortgage servicing rights	4,323		7,536		—		—		7,536
Interest rate swaps	7,349		7,349		—		7,349		—
Liabilities:
Deposits	$	5,108,439	$	5,095,168	$	3,601,586	$	1,493,582	$	—
Short-term borrowings	277,094		277,094		106,268		170,826		—
Long-term debt and mandatorily redeemable securities	71,194		68,373		—		68,373		—
Subordinated notes	58,764		48,956		—		48,956		—
Interest rate swaps	7,480		7,480		—		7,480		—
Off-balance-sheet instruments *	—		294		—		294		—
December 31, 2017
Assets:
Cash and due from banks	$	73,635	$	73,635	$	73,635	$	—	$	—
Federal funds sold and interest bearing deposits with other banks	4,398		4,398		4,398		—		—
Investment securities, available-for-sale	904,033		904,033		27,971		873,197		2,865
Other investments	25,953		25,953		25,953		—		—
Mortgages held for sale	13,123		13,123		—		13,123		—
Loans and leases, net of reserve for loan and lease losses	4,432,795		4,428,848		—		—		4,428,848
Mortgage servicing rights	4,349		7,187		—		—		7,187
Interest rate swaps	5,167		5,167		—		5,167		—
Liabilities:
Deposits	$	4,752,730	$	4,745,111	$	3,482,757	$	1,262,354	$	—
Short-term borrowings	214,595		214,595		206,862		7,733		—
Long-term debt and mandatorily redeemable securities	70,060		67,857		—		67,857		—
Subordinated notes	58,764		57,103		—		57,103		—
Interest rate swaps	5,262		5,262		—		5,262		—
Off-balance-sheet instruments *	—		286		—		286		—

* Represents estimated cash outflows required to currently settle the obligations at current market rates.

The methodologies for estimating fair value of financial assets and financial liabilities that are measured at fair value on a recurring or non-recurring basis are discussed above. The estimated fair value approximates carrying value for cash and due from banks, federal funds sold and interest bearing deposits with other banks and other investments. The methodologies for other financial assets and financial liabilities are discussed below:

Loans and Leases — For June 30, 2018, fair values of loans and leases are estimated on an exit price basis incorporating discounts for credit, liquidity and marketability factors. This is not comparable with the fair values disclosed for December 31, 2017, which were based on an entrance price basis. For that date, fair values of variable rate loans and leases that reprice frequently and with no significant change in credit risk were based on carrying values. The fair values of other loans and leases as of that date were estimated using discounted cash flow analyses which used interest rates then being offered for loans and leases with similar terms to borrowers of similar credit quality.

Deposits — The fair values for all deposits other than time deposits are equal to the amounts payable on demand (the carrying value). Fair values of variable rate time deposits are equal to their carrying values. Fair values for fixed rate time deposits are estimated using discounted cash flow analyses using interest rates currently being offered for deposits with similar remaining maturities.

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Short-Term Borrowings — The carrying values of Federal funds purchased, securities sold under repurchase agreements, and other short-term borrowings, including the liability related to mortgage loans available for repurchase under GNMA optional repurchase programs, approximate their fair values.

Long-Term Debt and Mandatorily Redeemable Securities — The fair values of long-term debt are estimated using discounted cash flow analyses, based on the current estimated incremental borrowing rates for similar types of borrowing arrangements. The carrying values of mandatorily redeemable securities are based on the current estimated cost of redeeming these securities which approximate their fair values.

Subordinated Notes — Fair values are estimated based on calculated market prices of comparable securities.

Off-Balance-Sheet Instruments — Contract and fair values for certain off-balance-sheet financial instruments (guarantees) are estimated based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing.

Limitations — Fair value estimates are made at a specific point in time based on relevant market information and information about the financial instruments. Because no market exists for a significant portion of the financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other such factors.

These estimates do not reflect any premium or discount that could result from offering for sale at one time the Company’s entire holdings of a particular financial instrument. These estimates are subjective in nature and require considerable judgment to interpret market data. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company could realize in a current market exchange, nor are they intended to represent the fair value of the Company as a whole. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. The fair value estimates presented herein are based on pertinent information available to management as of the respective balance sheet date. Although the Company is not aware of any factors that would significantly affect the estimated fair value amounts, such amounts have not been comprehensively revalued since the presentation dates, and therefore, estimates of fair value after the balance sheet date may differ significantly from the amounts presented herein.

Other significant assets, such as premises and equipment, other assets, and liabilities not defined as financial instruments, are not included in the above disclosures. Also, the fair value estimates for deposits do not include the benefit that results from the low-cost funding provided by the deposit liabilities compared to the cost of borrowing funds in the market.

ITEM 2.

MANAGEMENT’S DISCUSSION AND ANALYSIS OF

FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following management’s discussion and analysis is presented to provide information concerning 1st Source Corporation and its subsidiaries’ (collectively referred to as “the Company”, “we”, and “our”) financial condition as of June 30, 2018, as compared to December 31, 2017, and the results of operations for the three and six months ended June 30, 2018 and 2017. This discussion and analysis should be read in conjunction with our consolidated financial statements and the financial and statistical data appearing elsewhere in this report and our 2017 Annual Report.

Except for historical information contained herein, the matters discussed in this document express “forward-looking statements.” Generally, the words “believe,” “contemplate,” “seek,” “plan,” “possible,” “assume,” “expect,” “intend,” “targeted,” “continue,” “remain,” “estimate,” “anticipate,” “project,” “will,” “should,” “indicate,” “would,” “may” and other similar expressions are intended to identify forward-looking statements but are not the exclusive means of identifying such statements. Those statements, including statements, projections, estimates or assumptions concerning future events or performance, and other statements that are other than statements of historical fact, are subject to material risks and uncertainties. We caution readers not to place undue reliance on any forward-looking statements, which speak only as of the date made. We may make other written or oral forward-looking statements from time to time. Readers are advised that various important factors could cause our actual results or circumstances for future periods to differ materially from those anticipated or projected in such forward-looking statements. Such factors include, but are not limited to, changes in law, regulations or GAAP; our competitive position within the markets we serve; increasing consolidation within the banking industry; unforeseen changes in interest rates; unforeseen changes in loan prepayment assumptions; unforeseen downturns in or major events affecting the local, regional or national economies or the industries in which we have credit concentrations; and other matters discussed in our filings with the SEC, including our Annual Report on Form 10-K  for 2017, which filings are available from the SEC. We undertake no obligation to publicly update or revise any forward-looking statements.

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FINANCIAL CONDITION

Our total assets at June 30, 2018 were $6.32 billion, an increase of $432.77 million or 7.35% from December 31, 2017. Total investment securities, available-for-sale were $968.35 million, an increase of $64.32 million or 7.11% from December 31, 2017.

Total loans and leases were $4.84 billion, an increase of $312.15 million, or 6.89% from December 31, 2017. Our foreign loan and lease outstandings, all denominated in U.S. dollars were $223.94 million and $233.37 million as of June 30, 2018 and December 31, 2017, respectively. Foreign loans and leases are in aircraft financing. Loan and lease outstandings to borrowers in Brazil and Mexico were $97.91 million and $115.98 million as of June 30, 2018, respectively, compared to $101.35 million and $121.02 million as of December 31, 2017, respectively. As of June 30, 2018 and December 31, 2017 there was not a significant concentration in any other country. Solar loan and lease outstandings were $83.67 million as of June 30, 2018, an increase of $7.19 million or 9.41% from the $76.48 million at December 31, 2017. Solar loan and lease outstandings are included in commercial and agricultural loans. Equipment owned under operating leases was $143.02 million, an increase of $3.44 million, or 2.47% compared to December 31, 2017.

Total deposits were $5.11 billion, an increase of $355.71 million or 7.48% from the end of 2017. Short-term borrowings were $277.09 million, an increase of $62.50 million, or 29.12% from December 31, 2017. Long-term debt and mandatorily redeemable securities were $71.19 million, an increase of $1.13 million or 1.62% from December 31, 2017.

The following table shows accrued income and other assets.

(Dollars in thousands)	June 30, 2018		December 31, 2017
Accrued income and other assets:
Bank owned life insurance cash surrender value	$	66,608	$	65,816
Accrued interest receivable	19,219		17,133
Mortgage servicing rights	4,323		4,349
Other real estate	133		1,312
Repossessions	9,389		10,114
All other assets	53,876		56,688
Total accrued income and other assets	$	153,548	$	155,412

CAPITAL

As of June 30, 2018, total shareholders’ equity was $740.28 million, up $21.74 million, or 3.03% from the $718.54 million at December 31, 2017. In addition to net income of $41.08 million, other significant changes in shareholders’ equity during the first six months of 2018 included $11.96 million of dividends paid. The accumulated other comprehensive loss component of shareholders’ equity totaled $12.42 million at June 30, 2018, compared to $3.33 million at December 31, 2017. Our equity-to-assets ratio was 11.71% as of June 30, 2018, compared to 12.20% at December 31, 2017. Book value per common share rose to $28.51 at June 30, 2018, from $27.70 at December 31, 2017.

We declared and paid cash dividends per common share of $0.24 during the second quarter of 2018. The trailing four quarters dividend payout ratio, representing cash dividends per common share divided by diluted earnings per common share, was 29.56%. The dividend payout is continually reviewed by management and the Board of Directors subject to the Company’s capital and dividend policy.

The banking regulators have established guidelines for leverage capital requirements, expressed in terms of Tier 1 or core capital as a percentage of average assets, to measure the soundness of a financial institution. In addition, banking regulators have established risk-based capital guidelines for U.S. banking organizations.

31

The actual capital amounts and ratios of 1st Source Corporation and 1st Source Bank as of June 30, 2018, are presented in the table below.

	Actual				Minimum Capital Adequacy				Minimum Capital Adequacy with Capital Buffer(1)				To Be Well Capitalized Under Prompt Corrective Action Provisions
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio		Amount		Ratio
Total Capital (to Risk-Weighted Assets):
1st Source Corporation	$	799,549	14.44	%	$	442,972	8.00	%	$	546,794	9.875	%	$	553,715	10.00	%
1st Source Bank	721,802		13.02		443,644		8.00		547,623		9.875		554,555		10.00
Tier 1 Capital (to Risk-Weighted Assets):
1st Source Corporation	729,883		13.18		332,229		6.00		436,051		7.875		442,972		8.00
1st Source Bank	652,032		11.76		332,733		6.00		436,712		7.875		443,644		8.00
Common Equity Tier 1 Capital (to Risk-Weighted Assets):
1st Source Corporation	672,883		12.15		249,172		4.50		352,994		6.375		359,915		6.50
1st Source Bank	652,032		11.76		249,550		4.50		353,529		6.375		360,461		6.50
Tier 1 Capital (to Average Assets):
1st Source Corporation	729,883		11.93		244,703		4.00		N/A		N/A		305,879		5.00
1st Source Bank	652,032		10.66		244,607		4.00		N/A		N/A		305,758		5.00

(1) The capital conservation buffer requirement will be phased in over three years beginning in 2016. The capital buffer requirement effectively raises the minimum required common equity Tier 1 capital ratio to 7.0%, the Tier 1 capital ratio to 8.5%, and the total capital ratio to 10.5% on a fully phased-in basis on January 1, 2019.

LIQUIDITY AND INTEREST RATE SENSITIVITY

Effective liquidity management ensures that the cash flow requirements of depositors and borrowers, as well as our operating cash needs are met. Funds are available from a number of sources, including the securities portfolio, the core deposit base, access to the national brokered certificates of deposit market, national listing service certificates of deposit, Federal Home Loan Bank (FHLB) borrowings, Federal Reserve Bank (FRB) borrowings, and the capability to package loans for sale.

We have borrowing sources available to supplement deposits and meet our funding needs. 1st Source Bank has established relationships with several banks to provide short term borrowings in the form of federal funds purchased. At June 30, 2018, we had no borrowings in the federal funds market. We could borrow $265.00 million in additional funds for a short time from these banks on a collective basis. As of June 30, 2018, we had $211.79 million outstanding in FHLB advances and could borrow an additional $110.10 million. We also had no outstandings with the FRB and could borrow $595.54 million as of June 30, 2018.

Our loan to asset ratio was 76.58% at June 30, 2018 compared to 76.91% at December 31, 2017 and 77.04% at June 30, 2017. Cash and cash equivalents totaled $144.46 million at June 30, 2018 compared to $78.03 million at December 31, 2017 and $76.03 million at June 30, 2017. At June 30, 2018, the Statement of Financial Condition was rate sensitive by $277.34 million more assets than liabilities scheduled to reprice within one year, or approximately 1.10%. Management believes that the present funding sources provide adequate liquidity to meet our cash flow needs.

Under Indiana law governing the collateralization of public fund deposits, the Indiana Board of Depositories determines which financial institutions are required to pledge collateral based on the strength of their financial ratings. We have been informed that no collateral is required for our public fund deposits. However, the Board of Depositories could alter this requirement in the future and adversely impact our liquidity. Our potential liquidity exposure if we must pledge collateral is approximately $825 million.

RESULTS OF OPERATIONS

Net income for the three and six month periods ended June 30, 2018 was $21.96 million and $41.08 million, compared to $16.67 million and $32.88 million for the same periods in 2017. Diluted net income per common share was $0.84 and $1.57 for the three and six month periods ended June 30, 2018, compared to $0.64 and $1.26 for the same periods in 2017. Return on average common shareholders’ equity was 11.33% for the six months ended June 30, 2018, compared to 9.60% in 2017. The return on total average assets was 1.37% for the six months ended June 30, 2018, compared to 1.20% in 2017.

Net income increased for the six months ended June 30, 2018 compared to the first six months of 2017. Net interest income and noninterest income increased and income tax expense decreased which was offset by an increase in provision for loan and lease losses and noninterest expense. Details of the changes in the various components of net income are discussed further below.

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NET INTEREST INCOME

The following tables provide an analysis of net interest income and illustrates the interest income earned and interest expense charged for each major component of interest earning assets and interest bearing liabilities. Yields/rates are computed on a tax-equivalent basis, using a 21% rate (35% for periods prior to 2018). Nonaccrual loans and leases are included in the average loan and lease balance outstanding.

DISTRIBUTION OF ASSETS, LIABILITIES AND SHAREHOLDERS’ EQUITY

INTEREST RATES AND INTEREST DIFFERENTIAL

									Three Months Ended
	June 30, 2018								March 31, 2018								June 30, 2017
(Dollars in thousands)	Average Balance			Interest Income/Expense			Yield/ Rate		Average Balance			Interest Income/Expense			Yield/ Rate		Average Balance			Interest Income/Expense			Yield/ Rate
ASSETS
Investment securities available-for-sale:
Taxable	$	851,348		$	4,428		2.09	%	$	807,447		$	4,568		2.29	%	$	707,373		$	3,370		1.91	%
Tax exempt(1)	96,987			634			2.62	%	109,532			695			2.57	%	129,542			983			3.04	%
Mortgages held for sale	6,985			92			5.28	%	7,719			80			4.20	%	11,325			115			4.07	%
Loans and leases, net of unearned discount(1)	4,770,361			58,517			4.92	%	4,588,782			53,699			4.75	%	4,308,276			48,069			4.48	%
Other investments	51,141			397			3.11	%	39,299			408			4.21	%	48,992			319			2.61	%
Total earning assets(1)	5,776,822			64,068			4.45	%	5,552,779			59,450			4.34	%	5,205,508			52,856			4.07	%
Cash and due from banks	65,895								61,395								61,801
Reserve for loan and lease losses	(99,277		)						(95,707		)						(91,044		)
Other assets	423,577								421,107								409,927
Total assets	$	6,167,017							$	5,939,574							$	5,586,192
LIABILITIES AND SHAREHOLDERS’ EQUITY
Interest-bearing deposits	$	3,950,546		$	8,319		0.84	%	$	3,702,882		$	6,562		0.72	%	$	3,503,444		$	4,511		0.52	%
Short-term borrowings	290,220			826			1.14	%	322,257			776			0.98	%	236,716			272			0.46	%
Subordinated notes	58,764			908			6.20	%	58,764			883			6.09	%	58,764			1,055			7.20	%
Long-term debt and mandatorily redeemable securities	71,162			643			3.62	%	70,311			485			2.79	%	83,991			699			3.34	%
Total interest-bearing liabilities	4,370,692			10,696			0.98	%	4,154,214			8,706			0.85	%	3,882,915			6,537			0.68	%
Noninterest-bearing deposits	1,010,927								1,005,557								951,531
Other liabilities	49,088								53,561								54,517
Shareholders’ equity	736,310								726,242								697,229
Total liabilities and shareholders’ equity	$	6,167,017							$	5,939,574							$	5,586,192
Less: Fully tax-equivalent adjustments				(203		)						(212		)						(458		)
Net interest income/margin (GAAP-derived)(1)				$	53,169		3.69	%				$	50,532		3.69	%				$	45,861		3.53	%
Fully tax-equivalent adjustments				203								212								458
Net interest income/margin - FTE(1)				$	53,372		3.71	%				$	50,744		3.71	%				$	46,319		3.57	%
(1) See “Reconciliation of Non-GAAP Financial Measures” at the end of this section for additional information on this performance measure/ratio.

Quarter Ended June 30, 2018 compared to the Quarter Ended June 30, 2017

The taxable-equivalent net interest income for the three months ended June 30, 2018 was $53.37 million, an increase of 15.23% over the same period in 2017. The net interest margin on a fully taxable-equivalent basis was 3.71% for the three months ended June 30, 2018, compared to 3.57% for the three months ended June 30, 2017.

During the three month period ended June 30, 2018, average earning assets increased $571.31 million or 10.98% over the comparable period in 2017. Average interest-bearing liabilities increased $487.78 million or 12.56%. The yield on average earning assets increased 38 basis points to 4.45% from 4.07% primarily due to higher rates on loans and leases and taxable investment securities available-for-sale. Total cost of average interest-bearing liabilities increased 30 basis points to 0.98% from 0.68% as a result of the rising interest rate environment. The result to the net interest margin, or the ratio of net interest income to average earning assets, was an increase of 14 basis points.

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The largest contributor to the improved yield on average earning assets for the three months ended June 30, 2018, compared to the three months ended June 30, 2017, was an increase in yields on net loans and leases of 44 basis points primarily due to market conditions as a result of recent Federal interest rate increases and the recognition of a prepayment penalty of $0.41 million from an early loan payoff which had a positive 3 basis point effect. Average net loans and leases increased $462.09 million or 10.73% with the largest increases occurring within the commercial and agricultural and construction equipment portfolios as a result of market demand. Total average investment securities increased $111.42 million or 13.31%. Average mortgages held for sale decreased $4.34 million or 38.32%. Average other investments, which include federal funds sold, time deposits with other banks, Federal Reserve Bank excess balances, Federal Reserve Bank and Federal Home Loan Bank (FHLB) stock and commercial paper increased $2.15 million or 4.39% from the second quarter of 2017.

Average interest-bearing deposits increased $447.10 million or 12.76% for the second quarter of 2018 over the same period in 2017 primarily due to organic customer growth and to support increased loan and lease demand. The effective rate paid on average interest-bearing deposits grew 32 basis points to 0.84% from 0.52%. The increase in the average cost of interest-bearing deposits was primarily the result of higher rates and a shift in the deposit mix from the second quarter of 2017.

Average short-term borrowings increased $53.50 million or 22.60% for the second quarter of 2018 compared to the same period in 2017. Interest paid on short-term borrowings increased 68 basis points due to recent Federal interest rate increases as well as higher average FHLB borrowings. Interest paid on subordinated notes decreased 100 basis points during the second quarter of 2018 from the same period a year ago due to a conversion to a variable rate associated with one traunche that took effect September 15, 2017. Average long-term debt and mandatorily redeemable securities decreased $12.83 million or 15.27%. Interest paid on long-term debt and mandatorily redeemable securities increased 28 basis points during the second quarter of 2018 from the same period in 2017 primarily due to higher rates on mandatorily redeemable securities.

	Six Months Ended
	June 30, 2018								June 30, 2017
(Dollars in thousands)	Average Balance			Interest Income/Expense			Yield/ Rate		Average Balance			Interest Income/Expense			Yield/ Rate
ASSETS
Investment securities available-for-sale:
Taxable	$	829,519		$	8,996		2.19	%	$	707,809		$	6,884		1.96	%
Tax exempt(1)	103,225			1,329			2.60	%	130,284			1,977			3.06	%
Mortgages held for sale	7,350			172			4.72	%	9,748			196			4.05	%
Loans and leases, net of unearned discount(1)	4,680,073			112,216			4.84	%	4,248,088			93,022			4.42	%
Other investments	45,252			805			3.59	%	44,890			610			2.74	%
Total earning assets(1)	5,665,419			123,518			4.40	%	5,140,819			102,689			4.03	%
Cash and due from banks	63,657								60,889
Reserve for loan and lease losses	(97,502		)						(90,635		)
Other assets	422,350								401,058
Total assets	$	6,053,924							$	5,512,131
LIABILITIES AND SHAREHOLDERS’ EQUITY
Interest-bearing deposits	$	3,827,398		$	14,881		0.78	%	$	3,424,992		$	8,245		0.49	%
Short-term borrowings	306,150			1,602			1.06	%	252,183			499			0.40	%
Subordinated notes	58,764			1,791			6.15	%	58,764			2,110			7.24	%
Long-term debt and mandatorily redeemable securities	70,739			1,128			3.22	%	79,767			1,328			3.36	%
Total interest-bearing liabilities	4,263,051			19,402			0.92	%	3,815,706			12,182			0.64	%
Noninterest-bearing deposits	1,008,257								952,408
Other liabilities	51,312								53,541
Shareholders’ equity	731,304								690,476
Total liabilities and shareholders’ equity	$	6,053,924							$	5,512,131
Less: Fully tax-equivalent adjustments				(415		)						(919		)
Net interest income/margin (GAAP-derived)(1)				$	103,701		3.69	%				$	89,588		3.51	%
Fully tax-equivalent adjustments				415								919
Net interest income/margin - FTE(1)				$	104,116		3.71	%				$	90,507		3.55	%
(1) See “Reconciliation of Non-GAAP Financial Measures” at the end of this section for additional information on this performance measure/ratio.

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Six Months EndedJune 30, 2018 compared to the Six Months EndedJune 30, 2017

The taxable-equivalent net interest income for the six months ended June 30, 2018 was $104.12 million, an increase of 15.04% over the comparable period in 2017. The net interest margin on a fully taxable-equivalent basis was 3.71% compared to a net interest margin of 3.55% for the same period in 2017.

During the six month period ended June 30, 2018, average earning assets increased $524.60 million or 10.20% over the comparable period in 2017. Average interest-bearing liabilities increased $447.35 million or 11.72%. The yield on average earning assets increased 37 basis points to 4.40% from 4.03% primarily due to higher rates on loans and leases and investment securities available- for-sale. The total cost of average interest-bearing liabilities increased 28 basis points to 0.92% from 0.64%. The result to the net interest margin, or the ratio of net interest income to average earning assets, was an increase of 16 basis points.

The largest contributor to the improved yield on average earning assets for the six months ended June 30, 2018, compared to the six months ended June 30, 2017, was an increase in yields on net loans and leases of 42 basis points primarily due to market conditions as a result of recent Federal interest rate increases as well as the recognition of an unaccreted purchased loan discount and a prepayment penalty on two separate early loan payoffs of $1.03 million which had a positive 5 basis point effect. Average net loans and leases increased $431.99 million or 10.17% primarily in the commercial and agricultural and construction equipment portfolios as a result of market demand. Total average investment securities increased $94.65 million or 11.29%. Average mortgages held for sale decreased $2.40 million or 24.60%. Average other investments, which include federal funds sold, time deposits with other banks, Federal Reserve Bank excess balances, Federal Reserve Bank and FHLB stock and commercial paper remained relatively flat.

Average interest-bearing deposits increased $402.41 million or 11.75% for the first six months of 2018 over the same period in 2017 largely due to organic customer growth and to support increased loan and lease demand. The effective rate paid on average interest-bearing deposits grew 29 basis points to 0.78% compared to 0.49%. The increase in the average cost of interest-bearing deposits was primarily the result of higher rates and a shift in the deposit mix.

Average short-term borrowings increased $53.97 million or 21.40% for the first six months of 2018 compared to the same period in 2017. Interest paid on short-term borrowings increased 66 basis points. The growth in short-term borrowings was primarily the result of higher borrowings with the FHLB. Interest paid on subordinated notes decreased 109 basis points due to a conversion to a variable rate associated with one traunche that took effect September 15, 2017. Average long-term debt and mandatorily redeemable securities decreased $9.03 million or 11.32%. Interest paid on long-term debt and mandatorily redeemable securities decreased 14 basis points due to lower rates on mandatorily redeemable securities.

Reconciliation of Non-GAAP Financial Measures

The accounting and reporting policies of 1st Source conform to generally accepted accounting principles (“GAAP”) in the United States and prevailing practices in the banking industry. However, certain non-GAAP performance measures are used by management to evaluate and measure the Company’s performance. These include taxable-equivalent net interest income (including its individual components) and net interest margin (including its individual components). Management believes that these measures provide users of the Company’s financial information a more meaningful view of the performance of the interest-earning assets and interest-bearing liabilities.

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Management reviews yields on certain asset categories and the net interest margin of the Company and its banking subsidiaries on a fully taxable-equivalent (“FTE”) basis. In this non-GAAP presentation, net interest income is adjusted to reflect tax-exempt interest income on an equivalent before-tax basis. This measure ensures comparability of net interest income arising from both taxable and tax-exempt sources.

		Three Months Ended									Six Months Ended
		June 30,			March 31,			June 30,			June 30,			June 30,
(Dollars in thousands)		2018			2018			2017			2018			2017
Calculation of Net Interest Margin
(A)	Interest income (GAAP)	$	63,865		$	59,238		$	52,398		$	123,103		$	101,770
	Fully tax-equivalent adjustments:
(B)	- Loans and leases	89			88			152			177			302
(C)	- Tax-exempt investment securities	114			124			306			238			617
(D)	Interest income - FTE (A+B+C)	64,068			59,450			52,856			123,518			102,689
(E)	Interest expense (GAAP)	10,696			8,706			6,537			19,402			12,182
(F)	Net interest income (GAAP) (A–E)	53,169			50,532			45,861			103,701			89,588
(G)	Net interest income - FTE (D–E)	53,372			50,744			46,319			104,116			90,507
(H)	Annualization factor	4.011			4.056			4.011			2.017			2.017
(I)	Total earning assets	$	5,776,822		$	5,552,779		$	5,205,508		$	5,665,419		$	5,140,819
	Net interest margin (GAAP-derived) (F*H)/I	3.69		%	3.69		%	3.53		%	3.69		%	3.51		%
	Net interest margin - FTE (G*H)/I	3.71		%	3.71		%	3.57		%	3.71		%	3.55		%

PROVISION AND RESERVE FOR LOAN AND LEASE LOSSES

The provision for loan and lease losses for the three and six month periods ended June 30, 2018 was $4.82 million and $8.60 million compared to a provision for loan and lease losses in the three and six month periods ended June 30, 2017 of $2.74 million and $3.74 million, respectively. Net charge-offs of $0.14 million were recorded for the second quarter 2018, compared to net charge-offs of $0.94 million for the same quarter a year ago. Year-to-date net charge-offs of $0.48 million have been recorded in 2018, compared to net charge-offs of $0.37 million through June 30, 2017.

The increase in the amount of the provision for the three and six month periods ended June 30, 2018 was principally driven by strong loan growth. Loan growth during the three and six month periods ended June 30, 2018 was $148.73 million and $312.15 million compared to $146.45 million and $193.24 million for the same periods last year. In addition, we realized consecutive increases in our special attention credits and nonaccrual loans for the first two quarters in 2018. A large dollar account in our aircraft portfolio was placed in nonaccrual status during the second quarter and an impairment reserve was established.

We continue to evaluate risks which may impact our loan portfolios. We believe geopolitical events have the potential to negatively impact the U.S. economy. Current concerns include the tariff disputes, particularly between China and the U.S., and the potential for an escalating trade war. Political uncertainty continues in Latin America, with ongoing corruption scandals. The recent election in Mexico and forthcoming election in Brazil raise the possibility that new leadership could reverse recent structural reform. Both Canada and Mexico’s economy may suffer as a result of renegotiating NAFTA if differences are not resolved. Concerns continue to be heightened globally due to actual and potential terrorist attacks.

Another area of concern continues to be our aircraft portfolio where we have a collateral concentration and $224 million in foreign exposure. The aircraft industry was among the sectors affected most by the sluggish economy. Values for some aircraft have not fully recovered. We remain concerned about the prolonged low prices for several models. We have some foreign exposure in Mexico and Brazil. Brazil is beginning to show some positive economic signs as it emerges from its worst recession in twenty-five years. However, the country continues to be plagued by corruption scandals. We continue to monitor individual customer performance and assess risks in the portfolio as a whole.

On June 30, 2018, 30 day and over loan and lease delinquencies as a percentage of loan and lease outstandings were 0.54% compared to 0.16% on June 30, 2017. The increase in delinquencies is largely attributable to the aircraft, construction equipment, and auto and light truck portfolios. The reserve for loan and lease losses as a percentage of loans and leases outstanding at the end of the period was 2.13% compared to 2.10% one year ago. A summary of loan and lease loss experience during the three and six months ended June 30, 2018 and 2017 is located in Note 5 of the Consolidated Financial Statements.

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A loan or lease is considered impaired, based on current information and events, if it is probable that we will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan or lease agreement. We evaluate loans and leases exceeding $100,000 for impairment and establish a specific reserve as a component of the reserve for loan and lease losses when it is probable all amounts due will not be collected pursuant to the contractual terms of the loan or lease and the recorded investment in the loan or lease exceeds its fair value. A summary of impaired loans as of June 30, 2018 and December 31, 2017 is reflected in Note 4 of the Consolidated Financial Statements.

NONPERFORMING ASSETS

The following table shows nonperforming assets.

(Dollars in thousands)	June 30, 2018		December 31, 2017		June 30, 2017
Loans and leases past due 90 days or more	$	263	$	459	$	178
Nonaccrual loans and leases	34,582		19,405		15,923
Other real estate	133		1,312		710
Repossessions	9,389		10,114		13,052
Equipment owned under operating leases	—		9		21
Total nonperforming assets	$	44,367	$	31,299	$	29,884

Nonperforming assets as a percentage of loans and leases were 0.89% at June 30, 2018, 0.67% at December 31, 2017, and 0.66% at June 30, 2017. Nonperforming assets totaled $44.37 million at June 30, 2018, an increase of 44.24% from the $31.30 million reported at December 31, 2017, and a 48.46% increase from the $29.88 million reported at June 30, 2017. The increase in nonperforming assets during the first six months of 2018 was mainly related to higher nonaccrual loans and leases offset by a reduction in other real estate and repossessions. The increase in nonperforming assets at June 30, 2018 from June 30, 2017 occurred primarily in nonaccrual loans and leases offset by a reduction in repossessions.

The increase in nonaccrual loans and leases at June 30, 2018 from December 31, 2017 occurred primarily in the aircraft portfolio offset by decreases in the auto and light truck and commercial real estate portfolios. The increase in nonaccrual loans and leases at June 30, 2018 from June 30, 2017 occurred primarily in the aircraft and auto and light truck portfolios offset by decreases in the commercial and agricultural, commercial real estate and residential real estate and home equity portfolios. A summary of nonaccrual loans and leases and past due aging for the period ended June 30, 2018 and December 31, 2017 is located in Note 4 of the Consolidated Financial Statements.

Other real estate is the result of foreclosing on real estate in the local market for which we have a current appraisal and are well secured. Other real estate decreased over the past year due to sales of existing properties outpacing current foreclosures.

Repossessions consisted mainly of aircraft financing. At the time of repossession, the recorded amount of the loan or lease is written down to the fair value of the equipment or vehicle by a charge to the reserve for loan and lease losses or other income, if a positive adjustment, unless the equipment is in the process of immediate sale. Any subsequent fair value write-downs or write-ups, to the extent of previous write-downs, are included in noninterest expense.

The following table shows a summary of other real estate and repossessions.

(Dollars in thousands)	June 30, 2018		December 31, 2017		June 30, 2017
Commercial and agricultural	$	—	$	—	$	—
Auto and light truck	568		165		49
Medium and heavy duty truck	—		—		—
Aircraft	8,635		9,335		13,000
Construction equipment	172		582		—
Commercial real estate	26		481		456
Residential real estate and home equity	67		831		254
Consumer	54		32		3
Total	$	9,522	$	11,426	$	13,762

For financial statement purposes, nonaccrual loans and leases are included in loan and lease outstandings, whereas repossessions and other real estate are included in other assets.

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NONINTEREST INCOME

The following table shows the details of noninterest income.

	Three Months Ended   June 30,								Six Months Ended   June 30,
(Dollars in thousands)	2018		2017		$ Change		% Change		2018			2017		$ Change		% Change
Noninterest income:
Trust and wealth advisory	$	5,800	$	5,627	173		3.07	%	$	10,988		$	10,628	360		3.39	%
Service charges on deposit accounts	2,336		2,464		(128	)	(5.19	)%	4,564			4,703		(139	)	(2.96	)%
Debit card	3,427		2,986		441		14.77	%	6,530			5,736		794		13.84	%
Mortgage banking	1,073		1,304		(231	)	(17.71	)%	1,957			2,251		(294	)	(13.06	)%
Insurance commissions	1,487		1,310		177		13.51	%	3,445			3,077		368		11.96	%
Equipment rental	8,104		7,586		518		6.83	%	15,859			14,418		1,441		9.99	%
Gains (losses) on investment securities available-for-sale	—		465		(465	)	(100.00	)%	(345		)	1,750		(2,095	)	NM
Other	2,796		2,394		402		16.79	%	5,832			4,880		952		19.51	%
Total noninterest income	$	25,023	$	24,136	887		3.68	%	$	48,830		$	47,443	1,387		2.92	%

NM = Not Meaningful

Trust and wealth advisory fees (which include investment management fees, estate administration fees, mutual fund fees, annuity fees, and fiduciary fees) increased during the three and six months ended June 30, 2018 compared with the same periods a year ago. Trust and wealth advisory fees are largely based on the number and size of client relationships and the market value of assets under management. The market value of trust assets under management at June 30, 2018 and December 31, 2017 was $4.65 billion and $4.63 billion, respectively.

Service charges on deposit accounts declined for the three and six months ended June 30, 2018 over the comparable periods in 2017. The decrease in service charges on deposit accounts primarily reflects a lower volume of nonsufficient fund transactions and a decrease in paper statement fees as clients continue to move to online access for account statements.

Debit card income improved in the three and six months ended June 30, 2018 over the same periods a year ago. The majority of the improvement in debit card income was the result of an increased volume of debit card transactions in 2018.

Mortgage banking income decreased in the three and six months ended June 30, 2018 as compared to the same periods a year ago. The decrease was primarily caused by lower volume of loans originated for the secondary market in 2018.

Insurance commissions were higher during the three and six months ended June 30, 2018 over the same periods a year ago. The increase in insurance commissions was primarily due to an increased book of business and higher contingent commissions received.

Equipment rental income grew for the three and six months ended June 30, 2018 over the comparable periods in 2017. The increase was the result of the average equipment rental portfolio growing 13% over the same periods a year ago due to improving market conditions for equipment finance mainly in specialty vehicles and medium and heavy duty trucks. The growth in equipment rental income was offset by a similar increase in depreciation on equipment owned under operating leases.

Losses on investment securities available-for-sale during the six months ended June 30, 2018 compared with gains on investment securities available-for-sale in the same period in 2017 resulted primarily from repositioning the portfolio during the first quarter of 2018 in response to recent tax reform.

Other income increased for the three and six months ended June 30, 2018 over the comparable periods in 2017. The increase was primarily a result of higher customer swap fees, net partnership investment gains, higher brokerage fees and commissions, and growth in loan servicing fees.

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NONINTEREST EXPENSE

The following table shows the details of noninterest expense.

	Three Months Ended   June 30,								Six Months Ended   June 30,
(Dollars in thousands)	2018		2017		$ Change		% Change		2018		2017		$ Change	% Change
Noninterest expense:
Salaries and employee benefits	$	23,696	$	20,712	2,984		14.41	%	$	46,227	$	42,057	4,170	9.92	%
Net occupancy	2,115		2,368		(253	)	(10.68	)%	4,981		4,962		19	0.38	%
Furniture and equipment	5,718		5,108		610		11.94	%	11,173		9,901		1,272	12.85	%
Depreciation – leased equipment	6,684		6,296		388		6.16	%	13,112		11,976		1,136	9.49	%
Professional fees	1,728		1,672		56		3.35	%	3,745		2,749		996	36.23	%
Supplies and communication	1,499		1,345		154		11.45	%	3,052		2,595		457	17.61	%
FDIC and other insurance	714		573		141		24.61	%	1,412		1,196		216	18.06	%
Business development and marketing	1,725		1,501		224		14.92	%	3,258		3,153		105	3.33	%
Loan and lease collection and repossession	565		329		236		71.73	%	1,516		965		551	57.10	%
Other	1,433		1,201		232		19.32	%	2,958		2,670		288	10.79	%
Total noninterest expense	$	45,877	$	41,105	4,772		11.61	%	$	91,434	$	82,224	9,210	11.20	%

Salaries and employee benefits increased during the three and six months ended June 30, 2018 compared to the same periods in 2017. The increase for 2018 was mainly the result of higher base salaries as a result of normal merit increases and more full time equivalent summer employees, a rise in incentive compensation, and higher group insurance claims.

Net occupancy expense decreased during the three months ended June 30, 2018 and was flat for the six months ended June 30, 2018 compared to the same periods a year ago. The decrease in the second quarter of 2018 was primarily attributable to lower rent expense compared to the second quarter of 2017.

Furniture and equipment expense, including depreciation, increased during the three and six months ended June 30, 2018 compared to the same periods in 2017. Furniture and equipment expense was higher in 2018 mainly due to software maintenance costs related to a customer relationship management project and computer processing charges.

During the second quarter and first six months of 2018, depreciation on leased equipment grew in conjunction with the growth in equipment rental income as compared to the same periods one year ago.

Professional fees increased during the second quarter and first six months of 2018 compared to the same periods a year ago. The increase was mainly due to increased utilization of consulting services related to a customer relationship management project, information technology projects as well as a regulatory compliance project.

Supplies and communication grew during the second quarter and first six months of 2018 compared to the same periods a year ago. The increase resulted primarily from higher data communication line charges as bandwidth is improved and a one-time reduction in postage costs in 2017 offset by reduced printing costs.

FDIC and other insurance rose slightly during the three and six months ended June 30, 2018 compared to the same periods in 2017. The increase in 2018 was mainly due to higher assessments for FDIC premiums in conjunction with overall asset growth and a rise in other insurance costs.

Business development and marketing expense increased during the second quarter and first six months of 2018 compared to the same periods a year ago. The expense increase during 2018 was mainly the result of higher marketing promotions offset by lower charitable contributions.

Loan and lease collection and repossession expense increased during the three and six months ended June 30, 2018 compared to the same periods in 2017. The higher expense was mainly due to increased valuation adjustments on repossessed assets offset by reduced losses on the sale of repossessed assets.

Other expenses were higher during the three and six months ended June 30, 2018 compared to the same periods in 2017. The increase was primarily related to one-time trust losses and reduced gains on the sale of leased equipment offset by a decrease in provision for unfunded loan commitments, intangible asset amortization as items fully amortize and impairment writedowns on branches in 2017 not present in 2018.

39

INCOME TAXES

The provision for income taxes for the three and six month periods ended June 30, 2018 was $5.53 million and $11.41 million, compared to $9.49 million and $18.19 million for the same periods in 2017. The effective tax rate was 20.13% and 36.27% for the second quarter ended June 30, 2018 and 2017, respectively and 21.74% and 35.63% for the first six months ended June 30, 2018 and 2017, respectively. The change in effective tax rate was due primarily to the decrease in the federal tax rate from 35% in 2017 to 21% in 2018. Additionally, a $0.80 million benefit from a state tax settlement during the second quarter of 2018 resulted in an effective tax rate decrease of 2.91% and 1.52% for the three and six months ended June 30, 2018, respectively. See Note 12 for further information regarding the Tax Cuts and Jobs Act.

ITEM 3.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

There have been no material changes in market risks faced by 1st Source since December 31, 2017. For information regarding our market risk, refer to 1st Source’s Annual Report on Form 10-K for the year ended December 31, 2017.

ITEM 4.

CONTROLS AND PROCEDURES

As of the end of the period covered by this report an evaluation was carried out, under the supervision and with the participation of our management, including the 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) under the Securities Exchange Act of 1934) pursuant to Exchange Act Rule 13a-14. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that, at June 30, 2018, our disclosure controls and procedures were effective in ensuring that information required to be disclosed by 1st Source in reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms and are designed to ensure that information required to be disclosed in those reports is accumulated and communicated to management as appropriate to allow timely decisions regarding required disclosure.

In addition, there were no changes in our internal control over financial reporting (as defined in Exchange Act Rule 13a-15(f)) during the second fiscal quarter of 2018 that have materially affected, or are reasonably likely to materially affect, our internal controls over financial reporting.

PART II.  OTHER INFORMATION

ITEM 1. Legal Proceedings.

1st Source and its subsidiaries are involved in various legal proceedings incidental to the conduct of our businesses. Management does not expect that the outcome of any such proceedings will have a material adverse effect on our consolidated financial position or results of operations.

ITEM 1A. Risk Factors.

There have been no material changes in risks faced by 1st Source since December 31, 2017. For information regarding our risk factors, refer to 1st Source’s Annual Report on Form 10-K for the year ended December 31, 2017.

40

ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds

ISSUER PURCHASES OF EQUITY SECURITIES

Period	Total Number of Shares Purchased	Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs*	Maximum Number (or Approximate Dollar Value) of Shares that may yet be Purchased Under the Plans or Programs
April 01 - 30, 2018	—	$	—	—	1,370,390
May 01 - 31, 2018	—	—		—	1,370,390
June 01 - 30, 2018	5	54.09		5	1,370,385

* 1st Source maintains a stock repurchase plan that was authorized by the Board of Directors on July 24, 2014. Under the terms of the plan, 1st Source may repurchase up to 2,000,000 shares of its common stock from time to time to mitigate the potential dilutive effects of stock-based incentive plans and other potential uses of common stock for corporate purposes. Since the inception of the plan, 1st Source has repurchased a total of 629,615 shares.

ITEM 3. Defaults Upon Senior Securities.

None

ITEM 4. Mine Safety Disclosures.

None

ITEM 5. Other Information.

None

ITEM 6. Exhibits

The following exhibits are filed with this report:

31.1	Certification of Chief Executive Officer required by Rule 13a-14(a).
31.2	Certification of Chief Financial Officer required by Rule 13a-14(a).
32.1	Certification pursuant to 18 U.S.C. Section 1350 of Chief Executive Officer.
32.2	Certification pursuant to 18 U.S.C. Section 1350 of Chief Financial Officer.
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB	XBRL Taxonomy Extension Labels Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document

41

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.

		1st Source Corporation
DATE	July 19, 2018	/s/ CHRISTOPHER J. MURPHY III
		Christopher J. Murphy III Chairman of the Board and CEO
DATE	July 19, 2018	/s/ ANDREA G. SHORT
		Andrea G. Short Treasurer and Chief Financial Officer Principal Accounting Officer

42

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Christopher J. Murphy III, Chief Executive Officer, certify that:

1. I have reviewed this quarterly report on Form 10-Q of 1st Source Corporation;

2. Based on my knowledge, this quarterly 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 subsidiaries, 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 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 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 control over financial reporting.

Date: July 19, 2018

/s/ CHRISTOPHER J. MURPHY III

Christopher J. Murphy III

Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Andrea G. Short, Chief Financial Officer, certify that:

1. I have reviewed this quarterly report on Form 10-Q of 1st Source Corporation;

2. Based on my knowledge, this quarterly 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 subsidiaries, 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 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 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 control over financial reporting.

Date: July 19, 2018

/s/ ANDREA G. SHORT

Andrea G. Short

Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of 1st Source Corporation (1st Source) on Form 10-Q for the quarterly period ended June 30, 2018, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Christopher J. Murphy III, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

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

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of 1st Source.

Date: July 19, 2018

/s/ CHRISTOPHER J. MURPHY III

Christopher J. Murphy III

Chief Executive Officer

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of 1st Source Corporation (1st Source) on Form 10-Q for the quarterly period ended June 30, 2018, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Andrea G. Short, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

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

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of 1st Source.

Date: July 19, 2018

/s/ ANDREA G. SHORT

Andrea G. Short

Chief Financial Officer

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Jul. 13, 2018
Document and Entity Information
Entity Registrant Name	1ST SOURCE CORP
Entity Central Index Key	0000034782
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		25,965,077
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2

XML

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 71,102	$ 73,635
Federal funds sold and interest bearing deposits with other banks	73,358	4,398
Investment securities available-for-sale	968,349	904,033
Other investments	28,159	25,953
Mortgages held for sale	8,235	13,123
Loans and leases - net of unearned discount
Loans and leases	4,839,823	4,527,678
Reserve for loan and lease losses	(103,007)	(94,883)
Net loans and leases	4,736,816	4,432,795
Equipment owned under operating leases, net	143,024	139,581
Net premises and equipment	53,363	54,612
Goodwill and intangible assets	84,104	83,742
Accrued income and other assets	153,548	155,412
Total assets	6,320,058	5,887,284
Deposits:
Noninterest-bearing demand	1,106,495	1,064,271
Interest-bearing deposits:
Interest-bearing demand	1,651,533	1,554,898
Savings	843,558	863,588
Time	1,506,853	1,269,973
Total interest-bearing deposits	4,001,944	3,688,459
Total deposits	5,108,439	4,752,730
Short-term borrowings:
Federal funds purchased and securities sold under agreements to repurchase	106,861	205,834
Other short-term borrowings	170,233	8,761
Total short-term borrowings	277,094	214,595
Long-term debt and mandatorily redeemable securities	71,194	70,060
Subordinated notes	58,764	58,764
Accrued expenses and other liabilities	64,290	72,598
Total liabilities	5,579,781	5,168,747
SHAREHOLDERS' EQUITY
Preferred stock; no par value Authorized 10,000,000 shares; none issued or outstanding	0	0
Common stock; no par value Authorized 40,000,000 shares; issued 28,205,674 at June 30, 2018 and December 31, 2017	436,538	436,538
Retained earnings	370,521	339,959
Cost of common stock in treasury (2,240,597 shares at June 30, 2018 and 2,268,910 shares at December 31, 2017)	(54,367)	(54,628)
Accumulated other comprehensive loss	(12,415)	(3,332)
Total shareholders' equity	740,277	718,537
Total liabilities and shareholders' equity	6,320,058	5,887,284
Commercial and agricultural
Loans and leases - net of unearned discount
Loans and leases	1,047,705	929,997
Reserve for loan and lease losses	(18,631)	(16,228)
Auto and light truck
Loans and leases - net of unearned discount
Loans and leases	580,045	496,816
Reserve for loan and lease losses	(12,076)	(10,103)
Medium and heavy duty truck
Loans and leases - net of unearned discount
Loans and leases	276,273	296,935
Reserve for loan and lease losses	(4,342)	(4,844)
Aircraft
Loans and leases - net of unearned discount
Loans and leases	863,496	844,657
Reserve for loan and lease losses	(36,772)	(34,619)
Construction equipment
Loans and leases - net of unearned discount
Loans and leases	642,634	563,437
Reserve for loan and lease losses	(11,136)	(9,343)
Commercial real estate
Loans and leases - net of unearned discount
Loans and leases	769,659	741,568
Reserve for loan and lease losses	(15,140)	(14,792)
Residential real estate and home equity
Loans and leases - net of unearned discount
Loans and leases	524,112	526,122
Reserve for loan and lease losses	(3,564)	(3,666)
Consumer
Loans and leases - net of unearned discount
Loans and leases	135,899	128,146
Reserve for loan and lease losses	$ (1,346)	$ (1,288)

XML

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Preferred stock; no par value (in dollars per share)	$ 0	$ 0
Preferred stock, Authorized shares	10,000,000	10,000,000
Preferred stock, issued shares	0	0
Preferred stock, outstanding shares	0	0
Common stock; no par value (in dollars per share)	$ 0	$ 0
Common stock, Authorized shares	40,000,000	40,000,000
Common stock, issued shares	28,205,674	28,205,674
Cost of common stock in treasury, shares	2,240,597	2,268,910

XML

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Interest income:
Loans and leases	$ 58,520	$ 48,032	$ 112,211	$ 92,916
Investment securities, taxable	4,428	3,370	8,996	6,884
Investment securities, tax-exempt	520	677	1,091	1,360
Other	397	319	805	610
Total interest income	63,865	52,398	123,103	101,770
Interest expense:
Deposits	8,319	4,511	14,881	8,245
Short-term borrowings	826	272	1,602	499
Subordinated notes	908	1,055	1,791	2,110
Long-term debt and mandatorily redeemable securities	643	699	1,128	1,328
Total interest expense	10,696	6,537	19,402	12,182
Net interest income	53,169	45,861	103,701	89,588
Provision for loan and lease losses	4,817	2,738	8,603	3,738
Net interest income after provision for loan and lease losses	48,352	43,123	95,098	85,850
Noninterest income:
Mortgage banking	1,073	1,304	1,957	2,251
Insurance commissions	1,487	1,310	3,445	3,077
Equipment rental	8,104	7,586	15,859	14,418
Gains (losses) on investment securities available-for-sale	0		(345)
Gains (losses) on investment securities available-for-sale (including equity securities)		465		1,750
Other	2,796	2,394	5,832	4,880
Total noninterest income	25,023	24,136	48,830	47,443
Noninterest expense:
Salaries and employee benefits	23,696	20,712	46,227	42,057
Net occupancy	2,115	2,368	4,981	4,962
Furniture and equipment	5,718	5,108	11,173	9,901
Depreciation - leased equipment	6,684	6,296	13,112	11,976
Professional fees	1,728	1,672	3,745	2,749
Supplies and communication	1,499	1,345	3,052	2,595
FDIC and other insurance	714	573	1,412	1,196
Business development and marketing	1,725	1,501	3,258	3,153
Loan and lease collection and repossession	565	329	1,516	965
Other	1,433	1,201	2,958	2,670
Total noninterest expense	45,877	41,105	91,434	82,224
Income before income taxes	27,498	26,154	52,494	51,069
Income tax expense	5,534	9,485	11,414	18,194
Net income	$ 21,964	$ 16,669	$ 41,080	$ 32,875
Per common share:
Basic net income per common share (in dollars per share)	$ 0.84	$ 0.64	$ 1.57	$ 1.26
Diluted net income per common share (in dollars per share)	0.84	0.64	1.57	1.26
Cash dividends (in dollars per share)	$ 0.24	$ 0.19	$ 0.46	$ 0.37
Basic weighted average common shares outstanding (in shares)	25,958,128	25,927,032	25,954,278	25,915,280
Diluted weighted average common shares outstanding (in shares)	25,958,128	25,927,032	25,954,278	25,915,280
Trust and wealth advisory
Noninterest income:
Trust and wealth advisory, service charges on deposit accounts, and debit card income	$ 5,800	$ 5,627	$ 10,988	$ 10,628
Service charges on deposit accounts
Noninterest income:
Trust and wealth advisory, service charges on deposit accounts, and debit card income	2,336	2,464	4,564	4,703
Debit card
Noninterest income:
Trust and wealth advisory, service charges on deposit accounts, and debit card income	$ 3,427	$ 2,986	$ 6,530	$ 5,736

XML

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 21,964	$ 16,669	$ 41,080	$ 32,875
Other comprehensive income (loss):
Unrealized (depreciation) appreciation of available-for-sale securities	(1,949)	2,242	(11,363)	3,500
Reclassification adjustment for realized (gains) losses included in net income	0	(465)	345	(1,750)
Income tax effect	469	(667)	2,653	(657)
Other comprehensive (loss) income, net of tax	(1,480)	1,110	(8,365)	1,093
Comprehensive income	$ 20,484	$ 17,779	$ 32,715	$ 33,968

XML

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings	Cost of Common Stock in Treasury	Accumulated Other Comprehensive Income (Loss), Net
Balance at Dec. 31, 2016	$ 672,650	$ 436,538	$ 290,824	$ (56,056)	$ 1,344
Cumulative-effect adjustment at Dec. 31, 2016	(65)		(65)
Balance, adjusted at Dec. 31, 2016	672,585	436,538	290,759	(56,056)	1,344
Increase (Decrease) in Shareholders' Equity
Net income	32,875		32,875
Other comprehensive loss	1,093				1,093
Issuance of 44,102 and 60,459 common shares under stock based compensation awards for the six months ended on June 30, 2018 and 2017, respectively	2,305		870	1,435
Cost of 15,789 and 900 shares of common stock acquired for treasury for the six months ended on June 30, 2018 and 2017, respectively	(41)			(41)
Common stock dividend ($0.46 and $0.37 per share for the six months ended on June 30, 2018 and 2017, respectively)	(9,615)		(9,615)
Balance at Jun. 30, 2017	699,202	436,538	314,889	(54,662)	2,437
Balance at Dec. 31, 2017	718,537	436,538	339,959	(54,628)	(3,332)
Cumulative-effect adjustment at Dec. 31, 2017	0		718		(718)
Balance, adjusted at Dec. 31, 2017	718,537	436,538	340,677	(54,628)	(4,050)
Increase (Decrease) in Shareholders' Equity
Net income	41,080		41,080
Other comprehensive loss	(8,365)				(8,365)
Issuance of 44,102 and 60,459 common shares under stock based compensation awards for the six months ended on June 30, 2018 and 2017, respectively	1,770		723	1,047
Cost of 15,789 and 900 shares of common stock acquired for treasury for the six months ended on June 30, 2018 and 2017, respectively	(786)			(786)
Common stock dividend ($0.46 and $0.37 per share for the six months ended on June 30, 2018 and 2017, respectively)	(11,959)		(11,959)
Balance at Jun. 30, 2018	$ 740,277	$ 436,538	$ 370,521	$ (54,367)	$ (12,415)

XML

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Statement of Stockholders' Equity [Abstract]
Issuance of common shares under stock based compensation awards	44,102	60,459
Common stock acquired for treasury	15,789	900
Common stock dividend (in dollars per share)	$ 0.46	$ 0.37

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating activities:
Net income	$ 41,080	$ 32,875
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan and lease losses	8,603	3,738
Depreciation of premises and equipment	2,648	2,758
Depreciation of equipment owned and leased to others	13,112	11,976
Stock-based compensation	1,850	1,413
Amortization of investment securities premiums and accretion of discounts, net	1,967	2,402
Amortization of mortgage servicing rights	471	551
Deferred income taxes	(3,495)	(1,222)
Losses (gains) on investment securities available-for-sale	345
(Gains) losses on investment securities available-for-sale (including equity securities)		(1,750)
Originations of loans held for sale, net of principal collected	(34,035)	(44,472)
Proceeds from the sales of loans held for sale	39,953	45,420
Net gain on sale of loans held for sale	(1,030)	(1,303)
Net (gain) loss on sale of other real estate and repossessions	(57)	75
Change in interest receivable	(2,086)	(224)
Change in interest payable	2,462	357
Change in other assets	(3,951)	(654)
Change in other liabilities	1,581	4,019
Other	342	1,695
Net change in operating activities	69,760	57,654
Investing activities:
Proceeds from sales of investment securities available-for-sale	11,739
Proceeds from sales of investment securities available-for-sale (including equity securities)		1,766
Proceeds from maturities and paydowns of investment securities available-for-sale	84,033	93,098
Purchases of investment securities available-for-sale	(173,416)
Purchases of investment securities available-for-sale (including equity securities)		(94,117)
Proceeds from liquidation of partnership investment	1,868	75
Net change in other investments	(2,206)	(1,780)
Loans sold or participated to others	14,310	6,579
Net change in loans and leases	(327,802)	(206,166)
Net change in equipment owned under operating leases	(16,555)	(37,692)
Purchases of premises and equipment	(1,332)	(1,017)
Proceeds from sales of other real estate and repossessions	1,900	2,042
Net change in investing activities	(407,461)	(237,212)
Financing activities:
Net change in demand deposits and savings accounts	118,829	54,453
Net change in time deposits	236,880	93,823
Net change in short-term borrowings	62,499	14,640
Proceeds from issuance of long-term debt	0	19,999
Payments on long-term debt	(1,108)	(25,790)
Stock issued under stock purchase plans	145	153
Acquisition of treasury stock	(786)	(41)
Cash dividends paid on common stock	(12,331)	(9,949)
Net change in financing activities	404,128	147,288
Net change in cash and cash equivalents	66,427	(32,270)
Cash and cash equivalents, beginning of year	78,033	108,304
Cash and cash equivalents, end of period	144,460	76,034
Non-cash transactions:
Loans transferred to other real estate and repossessed assets	868	5,977
Common stock matching contribution to Employee Stock Ownership and Profit Sharing Plan	$ 583	$ 1,426

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Accounting Policies

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Accounting Policies

Accounting Policies

1st Source Corporation is a bank holding company headquartered in South Bend, Indiana that provides, through its subsidiaries (collectively referred to as “1st Source” or “the Company”), a broad array of financial products and services.

Basis of Presentation – The accompanying unaudited consolidated financial statements reflect all adjustments (all of which are normal and recurring in nature) which are, in the opinion of management, necessary for a fair presentation of the consolidated financial position, the results of operations, changes in comprehensive income, changes in shareholders’ equity, and cash flows for the periods presented. These unaudited consolidated financial statements have been prepared according to the rules and regulations of the Securities and Exchange Commission (SEC) and, therefore, certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (GAAP) have been omitted.

The Notes to the Consolidated Financial Statements appearing in 1st Source Corporation’s Annual Report on Form 10-K (2017 Annual Report), which include descriptions of significant accounting policies, should be read in conjunction with these interim financial statements. The Consolidated Statement of Financial Condition at December 31, 2017 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by GAAP for complete financial statements. Certain amounts in the prior period consolidated financial statements have been reclassified to conform to the current period presentation.

Use of Estimates in the Preparation of Financial Statements – Financial statements prepared in accordance with GAAP require the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expense during the reporting period. Actual results could differ from those estimates.

Loans and Leases – Loans are stated at the principal amount outstanding, net of unamortized deferred loan origination fees and costs and net of unearned income. Interest income is accrued as earned based on unpaid principal balances. Origination fees and direct loan and lease origination costs are deferred and the net amount amortized to interest income over the estimated life of the related loan or lease. Loan commitment fees are deferred and amortized into other income over the commitment period.

Direct financing leases are carried at the aggregate of lease payments plus estimated residual value of the leased property, net of unamortized deferred lease origination fees and costs and unearned income. Interest income on direct financing leases is recognized over the term of the lease to achieve a constant periodic rate of return on the outstanding investment.

The accrual of interest on loans and leases is discontinued when a loan or lease becomes contractually delinquent for 90 days, or when an individual analysis of a borrower’s credit worthiness indicates a credit should be placed on nonperforming status, except for residential mortgage loans and consumer loans that are well secured and in the process of collection. Residential mortgage loans are placed on nonaccrual at the time the loan is placed in foreclosure. When interest accruals are discontinued, interest credited to income in the current year is reversed and interest accrued in the prior year is charged to the reserve for loan and lease losses. However, in some cases, the Company may elect to continue the accrual of interest when the net realizable value of collateral is sufficient to cover the principal and accrued interest. When a loan or lease is classified as nonaccrual and the future collectibility of the recorded loan or lease balance is doubtful, collections on interest and principal are applied as a reduction to principal outstanding. Loans are returned to accrual status when all principal and interest amounts contractually due are brought current and future payments are reasonably assured, which is typically evidenced by a sustained repayment performance of at least six months.

A loan or lease is considered impaired, based on current information and events, if it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan or lease agreement. Interest on impaired loans and leases, which are not classified as nonaccrual, is recognized on the accrual basis. The Company evaluates loans and leases exceeding $100,000 for impairment and establishes a specific reserve as a component of the reserve for loan and lease losses when it is probable all amounts due will not be collected pursuant to the contractual terms of the loan or lease and the recorded investment in the loan or lease exceeds its fair value.

Loans and leases that have been modified and economic concessions have been granted to borrowers who have experienced financial difficulties are considered a troubled debt restructuring (TDR) and, by definition, are deemed an impaired loan. These concessions typically result from the Company’s loss mitigation activities and may include reductions in the interest rate, payment extensions, forgiveness of principal, forbearance or other actions. Certain TDRs are classified as nonperforming at the time of restructuring and typically are returned to performing status after considering the borrower’s sustained repayment performance for a reasonable period of at least six months.

When the Company modifies loans and leases in a TDR, it evaluates any possible impairment similar to other impaired loans based on the present value of expected future cash flows, discounted at the contractual interest rate of the original loan or lease agreement, or uses the current fair value of the collateral, less selling costs for collateral dependent loans. If the Company determines that the value of the modified loan is less than the recorded investment in the loan (net of previous charge-offs, deferred loan fees or costs and unamortized premium or discount), impairment is recognized through a reserve for loan and lease losses estimate or a charge-off to the reserve for loan and lease losses. In periods subsequent to modification, the Company evaluates all TDRs, including those that have payment defaults, for possible impairment and recognizes impairment through the reserve for loan and lease losses.

Revenue Recognition

The Company recognizes revenues as they are earned based on contractual terms, as transactions occur, or as services are provided and collectability is reasonably assured. The Company’s principal source of revenue is interest income from loans and leases and investment securities. The Company also earns noninterest income from various banking and financial services offered primarily through 1st Source Bank (Bank) and its subsidiaries.

Interest Income – The largest source of revenue for the Company is interest income which is primarily recognized on an accrual basis according to nondiscretionary formulas in written contracts, such as loan and lease agreements or investment securities contracts.

Noninterest Income – The Company earns noninterest income through a variety of financial and transaction services provided to corporate and consumer clients such as trust and wealth advisory, deposit account, debit card, mortgage banking, insurance, and equipment rental services. Revenue is recorded for noninterest income based on the contractual terms for the service or transaction performed. In certain circumstances, noninterest income is reported net of associated expenses.

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Recent Accounting Pronouncements

6 Months Ended

Jun. 30, 2018

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Share Based Payment Accounting: In June 2018, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2018-07 “Compensation - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting.” These amendments expand the scope of Topic 718, Compensation - Stock Compensation (which currently only includes share-based payments to employees) to include share-based payments issued to nonemployees for goods or services. Consequently, the accounting for share-based payments to nonemployees and employees will be substantially aligned. The ASU supersedes Subtopic 505-50, Equity - Equity-Based Payments to Non-Employees. The guidance is effective for public companies for fiscal years, and interim fiscal periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, but no earlier than a company’s adoption date of Topic 606, Revenue from Contracts with Customers. The Company is assessing ASU 2018-07 and does not expect it to have a material impact on its accounting and disclosures.

Income Taxes: In March 2018, the FASB issued ASU 2018-05 “Income Taxes (Topic 740): Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin (SAB) No. 118.” These amendments add SEC guidance to the FASB Accounting Standards Codification regarding the Tax Cuts and Jobs Act pursuant to the issuance of SAB 118. The amendments are effective upon addition to the FASB Codification. Disclosures related to the effect of the Tax Cuts and Jobs Act and the Company’s utilization of SAB 118 appear in Note 12 - Income Taxes.

Accumulated Other Comprehensive Income (Loss): In February 2018, the FASB issued ASU No. 2018-02 “Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” These amendments provide financial statement preparers with an option to reclassify stranded tax effects within AOCI to retained earnings in each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act (or portion thereof) is recorded. The guidance is effective for all organizations for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in any interim period. The amendments should be applied either in the period adopted or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. The Company early adopted ASU 2018-02 on January 1, 2018 through a $0.72 million cumulative-effect adjustment from AOCI to increase retained earnings related to unrealized gains and losses on available-for-sale securities. No other income tax effects related to the application of the Tax Cuts and Jobs Act were reclassified from AOCI to retained earnings.

Premium Amortization: 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.” These amendments shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The guidance is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. If an entity early adopts in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The amendments should be applied on a modified retrospective basis, with a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Company estimates that it will recognize a cumulative-effect adjustment to retained earnings of $0.30 million upon the adoption of ASU 2017-08 on January 1, 2019. This estimate could change due to changes in the security portfolio prior to the adoption date.

Simplifying the Test for Goodwill Impairment: In January 2017, the FASB issued ASU No. 2017-04 “Intangibles - Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment.” These amendments eliminate Step 2 from the goodwill impairment test. The amendments also eliminate the requirements for any reporting unit with a zero or negative carrying amount to perform a qualitative assessment and, if it fails that qualitative test, to perform Step 2 of the goodwill impairment test. An entity still has the option to perform the qualitative assessment for a reporting unit to determine if the quantitative impairment test is necessary. The guidance is effective for annual or any interim goodwill impairment tests in 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. ASU 2017-04 should be adopted on a prospective basis. The Company has assessed ASU 2017-04 and does not expect it to have a material impact on its accounting and disclosures.

Measurement of Credit Losses on Financial Instruments: In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments-Credit Losses (Topic 326) - Measurement of Credit Losses on Financial Instruments.” The provisions of ASU 2016-13 were issued to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments that are not accounted for at fair value through net income, including loans held for investment, held-to-maturity debt securities, trade and other receivables, net investment in leases and other commitments to extend credit held by a reporting entity at each reporting date. ASU 2016-13 requires that financial assets measured at amortized cost be presented at the net amount expected to be collected, through an allowance for credit losses that is deducted from the amortized cost basis. The amendments in ASU 2016-13 eliminate the probable incurred loss recognition in current GAAP and reflect an entity’s current estimate of all expected credit losses. The measurement of expected credit losses is based upon historical experience, current conditions, and reasonable and supportable forecasts that affect the collectibility of the financial assets.

For purchased financial assets with a more-than-insignificant amount of credit deterioration since origination (“PCD assets”) that are measured at amortized cost, the initial allowance for credit losses is added to the purchase price rather than being reported as a credit loss expense. Subsequent changes in the allowance for credit losses on PCD assets are recognized through the statement of income as a credit loss expense.

Credit losses relating to available-for-sale debt securities will be recorded through an allowance for credit losses rather than as a direct write-down to the security.

ASU 2016-13 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company has an implementation team working through the provisions of ASU 2016-13 including assessing the impact on its accounting and disclosures.

Leases: In February 2016, the FASB issued ASU No. 2016-02 “Leases (Topic 842).” ASU 2016-02 establishes a right of use model that requires a lessee to record a right of use asset and a lease liability for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. For lessors, the guidance modifies the classification criteria and the accounting for sales-type and direct financing leases. A lease will be treated as sale if it transfers all of the risks and rewards, as well as control of the underlying asset, to the lessee. If risks and rewards are conveyed without the transfer of control, the lease is treated as a financing. If the lessor doesn’t convey risks and rewards or control, an operating lease results. The amendments are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years for public business entities. Entities are required to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements, with certain practical expedients available. Early adoption is permitted. The Company has an implementation team working through the provisions of ASU 2016-02 including a review of all leases to assess the impact on its accounting, disclosures, processes, internal control over financial reporting, and the election of certain practical expedients. The Company has selected a third party software solution to assist with the accounting under the new standard. It is expected that the Company will recognize discounted right of use assets and lease liabilities (estimated between $10 and $20 million) upon adoption on January 1, 2019. The estimates will change due to changes in the lease portfolio prior to the adoption date.

Recognition and Measurement of Financial Instruments: 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.” ASU 2016-01 is intended to improve the recognition and measurement of financial instruments by requiring equity investments to be measured at fair value with changes in fair value recognized in net income; requiring public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; requiring separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements; eliminating the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured and amortized at cost on the balance sheet; and requiring a reporting organization to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the organization has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. ASU 2016-01 is effective for annual periods and interim periods within those annual periods, beginning after December 15, 2017. The amendments should be applied by means of a cumulative-effect adjustment to the balance sheet as of the beginning of the fiscal year of adoption. The amendments related to equity securities without readily determinable fair values (including disclosure requirements) should be applied prospectively to equity investments that exist as of the date of adoption. In February 2018, the FASB issued ASU No. 2018-03 which includes technical corrections and improvements to clarify the guidance in ASU No. 2016-01. The Company adopted ASU 2016-01 on January 1, 2018 and it did not have a material effect on its accounting for equity investments, fair value disclosures and other disclosure requirements.

Revenue from Contracts with Customers: In May 2014, the FASB issued ASU No. 2014-09 “Revenue from Contracts with Customers (Topic 606).” The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. On July 9, 2015, the FASB approved amendments deferring the effective date by one year. ASU 2014-09 is now effective for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. Early application is permitted but not before the original public entity effective date, i.e., annual periods beginning after December 15, 2016. In March 2016, the FASB issued final amendments (ASU No. 2016-08 and ASU No. 2016-10) to clarify the implementation guidance for principal versus agent considerations, identifying performance obligations and the accounting for licenses of intellectual property. The amendments can be applied retrospectively to each prior reporting period or retrospectively with the cumulative effect of initially applying this Update recognized at the date of initial application. In May 2016, the FASB issued final amendments (ASU No. 2016-12 and ASU 2016-11) to address narrow-scope improvements to the guidance on collectibility, non-cash consideration, completed contracts at transition and to provide a practical expedient for contract modifications at transition and an accounting policy election related to the presentation of sales taxes and other similar taxes collected from customers. Additionally, the amendments included a rescission of SEC guidance because of ASU 2014-09 related to revenue and expense recognition for freight services in process, accounting for shipping and handling fees and costs, and accounting for consideration given by a vendor to a customer. In December 2016, the FASB issued final guidance (ASU 2016-20) that allows entities not to make quantitative disclosures about performance obligations in certain cases and requires entities that use any of the new or previously existing optional exemptions to expand their qualitative disclosures. It also makes 12 additional technical corrections and improvements to the new revenue standard. These amendments are effective upon the adoption of ASU 2014-09. The Company’s revenue is comprised of net interest income, which is explicitly excluded from the scope of ASU 2014-09, and noninterest income. ASU 2014-09 required the Company to evaluate how it recognizes certain recurring revenue streams related to noninterest income. The Company adopted ASU 2014-09 on January 1, 2018 and did not identify any significant changes in the timing of revenue recognition when considering the amended accounting guidance. Additional disclosures related to revenue recognition appears in “Note 1. Accounting Policies.”

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Investment Securities

6 Months Ended

Jun. 30, 2018

Investments, Debt and Equity Securities [Abstract]

Investment Securities

Investment Securities Available-For-Sale

The following table shows investment securities available-for-sale.

(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
June 30, 2018
U.S. Treasury and Federal agencies securities	$	533,030	$	3	$	(8,899	)	$	524,134
U.S. States and political subdivisions securities	96,653		258		(1,009		)	95,902
Mortgage-backed securities — Federal agencies	308,437		831		(6,989		)	302,279
Corporate debt securities	45,882		—		(555		)	45,327
Foreign government and other securities	700		7		—			707
Total debt securities available-for-sale	$	984,702	$	1,099	$	(17,452	)	$	968,349
December 31, 2017
U.S. Treasury and Federal agencies securities	$	471,508	$	57	$	(3,446	)	$	468,119
U.S. States and political subdivisions securities	116,260		648		(908		)	116,000
Mortgage-backed securities — Federal agencies	289,327		1,456		(2,873		)	287,910
Corporate debt securities	31,573		5		(284		)	31,294
Foreign government and other securities	700		10		—			710
Total debt securities available-for-sale	$	909,368	$	2,176	$	(7,511	)	$	904,033

At June 30, 2018 and December 31, 2017, the residential mortgage-backed securities held by the Company consisted primarily of GNMA, FNMA and FHLMC pass-through certificates which are guaranteed by those respective agencies of the United States government (Government Sponsored Enterprise, GSEs).

The following table shows the contractual maturities of investments in debt securities available-for-sale at June 30, 2018. Expected maturities will differ from contractual maturities, because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

(Dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	59,675	$	59,618
Due after one year through five years	598,258		588,454
Due after five years through ten years	18,332		17,998
Due after ten years	—		—
Mortgage-backed securities	308,437		302,279
Total debt securities available-for-sale	$	984,702	$	968,349

The following table summarizes gross unrealized losses and fair value by investment category and age.

	Less than 12 Months					12 months or Longer					Total
(Dollars in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
June 30, 2018
U.S. Treasury and Federal agencies securities	$	414,870	$	(5,481	)	$	88,331	$	(3,418	)	$	503,201	$	(8,899	)
U.S. States and political subdivisions securities	42,123		(421		)	17,498		(588		)	59,621		(1,009		)
Mortgage-backed securities - Federal agencies	176,014		(3,540		)	83,844		(3,449		)	259,858		(6,989		)
Corporate debt securities	35,436		(214		)	9,891		(341		)	45,327		(555		)
Foreign government and other securities	—		—			—		—			—		—
Total debt securities available-for-sale	$	668,443	$	(9,656	)	$	199,564	$	(7,796	)	$	868,007	$	(17,452	)
December 31, 2017
U.S. Treasury and Federal agencies securities	$	311,865	$	(1,161	)	$	89,617	$	(2,285	)	$	401,482	$	(3,446	)
U.S. States and political subdivisions securities	34,971		(287		)	24,909		(621		)	59,880		(908		)
Mortgage-backed securities - Federal agencies	137,169		(1,336		)	60,162		(1,537		)	197,331		(2,873		)
Corporate debt securities	13,747		(57		)	10,048		(227		)	23,795		(284		)
Foreign government and other securities	—		—			—		—			—		—
Total debt securities available-for-sale	$	497,752	$	(2,841	)	$	184,736	$	(4,670	)	$	682,488	$	(7,511	)

The initial indication of potential other-than-temporary-impairment (OTTI) for debt securities is a decline in fair value below amortized cost. Quarterly, the impaired securities are analyzed on a qualitative and quantitative basis in determining OTTI. Declines in the fair value of debt securities available-for-sale below their cost that are deemed to be other-than-temporary are reflected in earnings as realized losses to the extent the impairment is related to credit losses. The amount of impairment related to other factors is recognized in other comprehensive income. In estimating OTTI losses, the Company considers among other things, (i) the length of time and the extent to which fair value has been less than cost, (ii) the financial condition and near-term prospects of the issuer, and (iii) whether it is more likely than not that the Company will not have to sell any such securities before a recovery of cost.

At June 30, 2018, the Company does not have the intent to sell any of the debt securities available-for-sale in the table above and believes that it is more likely than not, that it will not have to sell any such securities before an anticipated recovery of cost. Primarily the unrealized losses on debt securities are due to increases in market rates over the yields available at the time the underlying securities were purchased. The fair value is expected to recover on all debt securities as they approach their maturity date or re-pricing date or if market yields for such investments decline. The Company does not believe any of the securities are impaired due to reasons of credit quality.

The following table shows the gross realized gains and losses from the securities available-for-sale portfolio, including marketable equity securities. Realized gains and losses of all securities are computed using the specific identification cost basis.

	Three Months Ended   June 30,					Six Months Ended   June 30,
(Dollars in thousands)	2018		2017			2018			2017
Gross realized gains	$	—	$	655		$	2		$	1,940
Gross realized losses	—		—			(347		)	—
OTTI losses	—		(190		)	—			(190		)
Net realized gains (losses)	$	—	$	465		$	(345	)	$	1,750

At June 30, 2018 and December 31, 2017, investment securities available-for-sale with carrying values of $245.40 million and $289.05 million, respectively, were pledged as collateral for security repurchase agreements and for other purposes.

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Loan and Lease Financings

6 Months Ended

Jun. 30, 2018

Receivables [Abstract]

Loan and Lease Financings

Loan and Lease Financings

The Company evaluates loans and leases for credit quality at least annually but more frequently if certain circumstances occur (such as material new information which becomes available and indicates a potential change in credit risk). The Company uses two methods to assess credit risk: loan or lease credit quality grades and credit risk classifications. The purpose of the loan or lease credit quality grade is to document the degree of risk associated with individual credits as well as inform management of the degree of risk in the portfolio taken as a whole. Credit risk classifications are used to categorize loans by degree of risk and to designate individual or committee approval authorities for higher risk credits at the time of origination. Credit risk classifications include categories for: Acceptable, Marginal, Special Attention, Special Risk, Restricted by Policy, Regulated and Prohibited by Law.

All loans and leases, except residential real estate and home equity loans and consumer loans, are assigned credit quality grades on a scale from 1 to 12 with grade 1 representing superior credit quality. The criteria used to assign grades to extensions of credit that exhibit potential problems or well-defined weaknesses are primarily based upon the degree of risk and the likelihood of orderly repayment, and their effect on the Company’s safety and soundness. Loans or leases graded 7 or weaker are considered “special attention” credits and, as such, relationships in excess of $100,000 are reviewed quarterly as part of management’s evaluation of the appropriateness of the reserve for loan and lease losses. Grade 7 credits are defined as “watch” and contain greater than average credit risk and are monitored to limit the exposure to increased risk; grade 8 credits are “special mention” and, following regulatory guidelines, are defined as having potential weaknesses that deserve management’s close attention. Credits that exhibit well-defined weaknesses and a distinct possibility of loss are considered “classified” and are graded 9 through 12 corresponding to the regulatory definitions of “substandard” (grades 9 and 10) and the more severe “doubtful” (grade 11) and “loss” (grade 12).

The following table shows the credit quality grades of the recorded investment in loans and leases, segregated by class.

	Credit Quality Grades
(Dollars in thousands)	1-6		7-12		Total
June 30, 2018
Commercial and agricultural	$	1,014,535	$	33,170	$	1,047,705
Auto and light truck	559,686		20,359		580,045
Medium and heavy duty truck	274,035		2,238		276,273
Aircraft	812,726		50,770		863,496
Construction equipment	624,034		18,600		642,634
Commercial real estate	755,613		14,046		769,659
Total	$	4,040,629	$	139,183	$	4,179,812
December 31, 2017
Commercial and agricultural	$	906,074	$	23,923	$	929,997
Auto and light truck	482,455		14,361		496,816
Medium and heavy duty truck	293,318		3,617		296,935
Aircraft	815,956		28,701		844,657
Construction equipment	552,684		10,753		563,437
Commercial real estate	726,134		15,434		741,568
Total	$	3,776,621	$	96,789	$	3,873,410

For residential real estate and home equity and consumer loans, credit quality is based on the aging status of the loan and by payment activity. The following table shows the recorded investment in residential real estate and home equity and consumer loans by performing or nonperforming status. Nonperforming loans are those loans which are on nonaccrual status or are 90 days or more past due.

(Dollars in thousands)	Performing		Nonperforming		Total
June 30, 2018
Residential real estate and home equity	$	522,166	$	1,946	$	524,112
Consumer	135,699		200		135,899
Total	$	657,865	$	2,146	$	660,011
December 31, 2017
Residential real estate and home equity	$	523,803	$	2,319	$	526,122
Consumer	127,982		164		128,146
Total	$	651,785	$	2,483	$	654,268

The following table shows the recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status.

(Dollars in thousands)	Current		30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due and Accruing		Total Accruing  Loans		Nonaccrual		Total Financing Receivables
June 30, 2018
Commercial and agricultural	$	1,044,377	$	77	$	25	$	—	$	1,044,479	$	3,226	$	1,047,705
Auto and light truck	571,355		2,298		256		—		573,909		6,136		580,045
Medium and heavy duty truck	275,945		17		—		—		275,962		311		276,273
Aircraft	830,633		12,437		—		—		843,070		20,426		863,496
Construction equipment	632,274		4,290		5,034		—		641,598		1,036		642,634
Commercial real estate	767,852		178		65		—		768,095		1,564		769,659
Residential real estate and home equity	521,540		413		213		188		522,354		1,758		524,112
Consumer	134,869		543		287		75		135,774		125		135,899
Total	$	4,778,845	$	20,253	$	5,880	$	263	$	4,805,241	$	34,582	$	4,839,823
December 31, 2017
Commercial and agricultural	$	927,113	$	281	$	—	$	—	$	927,394	$	2,603	$	929,997
Auto and light truck	485,885		2,869		21		—		488,775		8,041		496,816
Medium and heavy duty truck	296,564		—		—		—		296,564		371		296,935
Aircraft	823,638		14,570		4,492		—		842,700		1,957		844,657
Construction equipment	561,665		333		448		—		562,446		991		563,437
Commercial real estate	738,006		23		121		—		738,150		3,418		741,568
Residential real estate and home equity	521,943		1,508		352		429		524,232		1,890		526,122
Consumer	127,107		776		99		30		128,012		134		128,146
Total	$	4,481,921	$	20,360	$	5,533	$	459	$	4,508,273	$	19,405	$	4,527,678

The following table shows impaired loans and leases, segregated by class, and the corresponding reserve for impaired loan and lease losses.

(Dollars in thousands)	Recorded Investment		Unpaid Principal Balance		Related Reserve
June 30, 2018
With no related reserve recorded:
Commercial and agricultural	$	2,992	$	2,992	$	—
Auto and light truck	5,789		5,789		—
Medium and heavy duty truck	310		310		—
Aircraft	1,237		1,237		—
Construction equipment	—		—		—
Commercial real estate	582		582		—
Residential real estate and home equity	—		—		—
Consumer	—		—		—
Total with no related reserve recorded	10,910		10,910		—
With a reserve recorded:
Commercial and agricultural	—		—		—
Auto and light truck	226		226		9
Medium and heavy duty truck	—		—		—
Aircraft	19,164		19,164		2,758
Construction equipment	941		941		182
Commercial real estate	908		908		172
Residential real estate and home equity	348		350		130
Consumer	—		—		—
Total with a reserve recorded	21,587		21,589		3,251
Total impaired loans	$	32,497	$	32,499	$	3,251
December 31, 2017
With no related reserve recorded:
Commercial and agricultural	$	2,439	$	2,439	$	—
Auto and light truck	—		—		—
Medium and heavy duty truck	371		371		—
Aircraft	1,901		1,901		—
Construction equipment	584		584		—
Commercial real estate	2,375		2,375		—
Residential real estate and home equity	—		—		—
Consumer	—		—		—
Total with no related reserve recorded	7,670		7,670		—
With a reserve recorded:
Commercial and agricultural	—		—		—
Auto and light truck	7,780		7,780		243
Medium and heavy duty truck	—		—		—
Aircraft	—		—		—
Construction equipment	344		344		108
Commercial real estate	971		971		181
Residential real estate and home equity	352		354		134
Consumer	—		—		—
Total with a reserve recorded	9,447		9,449		666
Total impaired loans	$	17,117	$	17,119	$	666

The following table shows average recorded investment and interest income recognized on impaired loans and leases, segregated by class.

	Three Months Ended June 30,								Six Months Ended June 30,
	2018				2017				2018				2017
(Dollars in thousands)	Average Recorded Investment		Interest Income		Average Recorded Investment		Interest Income		Average Recorded Investment		Interest Income		Average Recorded Investment		Interest Income
Commercial and agricultural	$	2,998	$	—	$	7,067	$	—	$	2,921	$	—	$	4,886	$	1
Auto and light truck	7,066		—		182		—		7,446		—		133		—
Medium and heavy duty truck	319		—		—		—		334		—		—		—
Aircraft	9,126		20		6,174		—		6,097		20		7,484		—
Construction equipment	942		—		1,143		—		1,136		—		1,152		—
Commercial real estate	2,259		—		2,720		—		2,978		—		3,312		—
Residential real estate and home equity	349		4		356		4		349		8		357		8
Consumer	—		—		—		—		—		—		—		—
Total	$	23,059	$	24	$	17,642	$	4	$	21,261	$	28	$	17,324	$	9

There were no loan and lease modifications classified as a troubled debt restructuring (TDR) during the three and six months ended June 30, 2018 and one nonperforming modification classified as a TDR during the three and six months ended June 30, 2017. The classification between nonperforming and performing is determined at the time of modification. Modification programs focus on extending maturity dates or modifying payment patterns with most TDRs experiencing a combination of concessions. Modifications do not result in the contractual forgiveness of principal or interest. There were no modifications during 2018 and one modification during 2017 that resulted in an interest rate reduction below market rate. Consequently, the financial impact of the modification was immaterial.

There were no TDRs which had payment defaults within the twelve months following modification during the three and six months ended June 30, 2018 and one nonperforming TDR which had a payment default within the twelve months following modification during the three and six months ended June 30, 2017. Default occurs when a loan or lease is 90 days or more past due under the modified terms or transferred to nonaccrual.

The following table shows the recorded investment of loans and leases classified as troubled debt restructurings as of June 30, 2018 and December 31, 2017.

(Dollars in thousands)	June 30, 2018		December 31, 2017
Performing TDRs	$	348	$	352
Nonperforming TDRs	122		537
Total TDRs	$	470	$	889

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Reserve for Loan and Lease Losses

6 Months Ended

Jun. 30, 2018

Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]

Reserve for Loan and Lease Losses

Reserve for Loan and Lease Losses

The reserve for loan and lease loss methodology has been consistently applied for several years, with enhancements instituted periodically. Reserve ratios are reviewed quarterly and revised periodically to reflect recent loss history and to incorporate current risks and trends which may not be recognized in historical data. As the historical charge-off analysis is updated, the Company reviews the look-back periods for each business loan portfolio. Furthermore, a thorough analysis of charge-offs, non-performing asset levels, special attention outstandings and delinquency is performed in order to review portfolio trends and other factors, including specific industry risks and economic conditions, which may have an impact on the reserves and reserve ratios applied to various portfolios. The Company adjusts the calculated historical based ratio as a result of the analysis of environmental factors, principally economic risk and concentration risk. Key economic factors affecting the portfolios are growth in gross domestic product, unemployment rates, housing market trends, commodity prices, inflation and global economic and political issues. Concentration risk is impacted primarily by geographic concentration in Northern Indiana and Southwestern Lower Michigan in the business banking and commercial real estate portfolios and by collateral concentration in the specialty finance portfolios and exposure to foreign markets by geographic risk.

The reserve for loan and lease losses is maintained at a level believed to be appropriate by the Company to absorb probable losses inherent in the loan and lease portfolio. The determination of the reserve requires significant judgment reflecting the Company’s best estimate of probable loan and lease losses related to specifically identified impaired loans and leases as well as probable losses in the remainder of the various loan and lease portfolios. For purposes of determining the reserve, the Company has segmented loans and leases into classes based on the associated risk within these segments. The Company has determined that eight classes exist within the loan and lease portfolio. The methodology for assessing the appropriateness of the reserve consists of several key elements, which include: specific reserves for impaired loans, formula reserves for each business lending division portfolio including percentage allocations for special attention loans and leases not deemed impaired, and reserves for pooled homogeneous loans and leases. The Company’s evaluation is based upon a continuing review of these portfolios, estimates of customer performance, collateral values and dispositions, and assessments of economic and geopolitical events, all of which are subject to judgment and will change.

The following table shows the changes in the reserve for loan and lease losses, segregated by class, for the three months ended June 30, 2018 and 2017.

(Dollars in thousands)	Commercial and agricultural			Auto and light truck		Medium and heavy duty truck			Aircraft			Construction equipment			Commercial real estate			Residential real estate and home equity			Consumer		Total
June 30, 2018
Balance, beginning of period	$	17,609		$	10,810	$	4,493		$	34,836		$	10,917		$	14,770		$	3,565		$	1,331	$	98,331
Charge-offs	—			84		—			—			—			—			—			221		305
Recoveries	41			13		—			5			26			4			7			68		164
Net charge-offs (recoveries)	(41		)	71		—			(5		)	(26		)	(4		)	(7		)	153		141
Provision (recovery of provision)	981			1,337		(151		)	1,931			193			366			(8		)	168		4,817
Balance, end of period	$	18,631		$	12,076	$	4,342		$	36,772		$	11,136		$	15,140		$	3,564		$	1,346	$	103,007
June 30, 2017
Balance, beginning of period	$	15,989		$	9,772	$	4,676		$	32,008		$	8,932		$	13,868		$	3,592		$	1,281	$	90,118
Charge-offs	261			61		—			654			27			—			33			150		1,186
Recoveries	89			5		—			15			7			48			16			64		244
Net charge-offs (recoveries)	172			56		—			639			20			(48		)	17			86		942
Provision (recovery of provision)	382			1,727		164			453			337			(441		)	32			84		2,738
Balance, end of period	$	16,199		$	11,443	$	4,840		$	31,822		$	9,249		$	13,475		$	3,607		$	1,279	$	91,914

The following table shows the changes in the reserve for loan and lease losses, segregated by class, for the six months ended June 30, 2018 and 2017.

(Dollars in thousands)	Commercial and agricultural loans			Auto and light truck			Medium and heavy duty truck			Aircraft			Construction equipment			Commercial real estate			Residential real estate and home equity			Consumer loans		Total
June 30, 2018
Balance, beginning of period	$	16,228		$	10,103		$	4,844		$	34,619		$	9,343		$	14,792		$	3,666		$	1,288	$	94,883
Charge-offs	25			400			—			29			5			7			11			384		861
Recoveries	90			19			—			49			45			25			13			141		382
Net charge-offs (recoveries)	(65		)	381			—			(20		)	(40		)	(18		)	(2		)	243		479
Provision (recovery of provision)	2,338			2,354			(502		)	2,133			1,753			330			(104		)	301		8,603
Balance, end of period	$	18,631		$	12,076		$	4,342		$	36,772		$	11,136		$	15,140		$	3,564		$	1,346	$	103,007
June 30, 2017
Balance, beginning of period	$	14,668		$	8,064		$	4,740		$	34,352		$	8,207		$	13,677		$	3,550		$	1,285	$	88,543
Charge-offs	469			82			—			1,757			27			2			37			370		2,744
Recoveries	684			1,132			—			198			29			98			87			149		2,377
Net charge-offs (recoveries)	(215		)	(1,050		)	—			1,559			(2		)	(96		)	(50		)	221		367
Provision (recovery of provision)	1,316			2,329			100			(971		)	1,040			(298		)	7			215		3,738
Balance, end of period	$	16,199		$	11,443		$	4,840		$	31,822		$	9,249		$	13,475		$	3,607		$	1,279	$	91,914

The following table shows the reserve for loan and lease losses and recorded investment in loans and leases, segregated by class, separated between individually and collectively evaluated for impairment as of June 30, 2018 and December 31, 2017.

(Dollars in thousands)	Commercial and agricultural loans		Auto and light truck		Medium and heavy duty truck		Aircraft		Construction equipment		Commercial real estate		Residential real estate and home equity		Consumer loans		Total
June 30, 2018
Reserve for loan and lease losses
Ending balance, individually evaluated for impairment	$	—	$	9	$	—	$	2,758	$	182	$	172	$	130	$	—	$	3,251
Ending balance, collectively evaluated for impairment	18,631		12,067		4,342		34,014		10,954		14,968		3,434		1,346		99,756
Total reserve for loan and lease losses	$	18,631	$	12,076	$	4,342	$	36,772	$	11,136	$	15,140	$	3,564	$	1,346	$	103,007
Recorded investment in loans
Ending balance, individually evaluated for impairment	$	2,992	$	6,015	$	310	$	20,401	$	941	$	1,490	$	348	$	—	$	32,497
Ending balance, collectively evaluated for impairment	1,044,713		574,030		275,963		843,095		641,693		768,169		523,764		135,899		4,807,326
Total recorded investment in loans	$	1,047,705	$	580,045	$	276,273	$	863,496	$	642,634	$	769,659	$	524,112	$	135,899	$	4,839,823
December 31, 2017
Reserve for loan and lease losses
Ending balance, individually evaluated for impairment	$	—	$	243	$	—	$	—	$	108	$	181	$	134	$	—	$	666
Ending balance, collectively evaluated for impairment	16,228		9,860		4,844		34,619		9,235		14,611		3,532		1,288		94,217
Total reserve for loan and lease losses	$	16,228	$	10,103	$	4,844	$	34,619	$	9,343	$	14,792	$	3,666	$	1,288	$	94,883
Recorded investment in loans
Ending balance, individually evaluated for impairment	$	2,439	$	7,780	$	371	$	1,901	$	928	$	3,346	$	352	$	—	$	17,117
Ending balance, collectively evaluated for impairment	927,558		489,036		296,564		842,756		562,509		738,222		525,770		128,146		4,510,561
Total recorded investment in loans	$	929,997	$	496,816	$	296,935	$	844,657	$	563,437	$	741,568	$	526,122	$	128,146	$	4,527,678

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Mortgage Servicing Rights

6 Months Ended

Jun. 30, 2018

Transfers and Servicing of Financial Assets [Abstract]

Mortgage Servicing Rights

Mortgage Servicing Rights

The Company recognizes the rights to service residential mortgage loans for others as separate assets, whether the servicing rights are acquired through a separate purchase or through the sale of originated loans with servicing rights retained. The Company allocates a portion of the total proceeds of a mortgage loan to servicing rights based on the relative fair value. The unpaid principal balance of residential mortgage loans serviced for third parties was $744.40 million and $752.99 million at June 30, 2018 and December 31, 2017, respectively.

Mortgage servicing rights (MSRs) are evaluated for impairment at each reporting date. For purposes of impairment measurement, MSRs are stratified based on the predominant risk characteristics of the underlying servicing, principally by loan type. If temporary impairment exists within a tranche, a valuation allowance is established through a charge to income equal to the amount by which the carrying value exceeds the fair value. If it is later determined all or a portion of the temporary impairment no longer exists for a particular tranche, the valuation allowance is reduced through a recovery of income.

The following table shows changes in the carrying value of MSRs and the associated valuation allowance.

	Three Months Ended   June 30,						Six Months Ended   June 30,
(Dollars in thousands)	2018			2017			2018			2017
Mortgage servicing rights:
Balance at beginning of period	$	4,356		$	4,281		$	4,349		$	4,297
Additions	202			246			445			493
Amortization	(235		)	(288		)	(471		)	(551		)
Sales	—			—			—			—
Carrying value before valuation allowance at end of period	4,323			4,239			4,323			4,239
Valuation allowance:
Balance at beginning of period	—			—			—			—
Impairment recoveries	—			—			—			—
Balance at end of period	$	—		$	—		$	—		$	—
Net carrying value of mortgage servicing rights at end of period	$	4,323		$	4,239		$	4,323		$	4,239
Fair value of mortgage servicing rights at end of period	$	7,536		$	7,134		$	7,536		$	7,134

At June 30, 2018 and 2017, the fair value of MSRs exceeded the carrying value reported in the Statements of Financial Condition by $3.21 million and $2.90 million, respectively. This difference represents increases in the fair value of certain MSRs that could not be recorded above cost basis.

Mortgage loan contractual servicing fees, including late fees and ancillary income, were $0.64 million and $0.69 million for the three months ended June 30, 2018 and 2017, respectively. Mortgage loan contractual servicing fees, including late fees and ancillary income, were $1.30 million and $1.37 million for the six months ended June 30, 2018 and 2017, respectively. Mortgage loan contractual servicing fees are included in Mortgage Banking on the Statements of Income.

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Commitments and Financial Instruments with Off-Balance-Sheet Risk

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Financial Instruments with Off-Balance-Sheet Risk

Commitments and Financial Instruments with Off-Balance-Sheet Risk

Commitments — 1st Source Bank (Bank), a subsidiary of 1st Source Corporation, has made investments directly in various tax-advantaged and other operating partnerships formed by third parties. The Bank’s investments are primarily related to investments promoting affordable housing, community development and renewable energy sources. As a limited partner in these operating partnerships, we are allocated credits and deductions associated with the underlying properties. The Bank has determined that it is not the primary beneficiary of these investments because the general partners have the power to direct the activities that most significantly influence the economic performance of their respective partnerships. At June 30, 2018 and December 31, 2017, investment balances, including all legally binding commitments to fund future investments totaled $14.54 million and $23.76 million, respectively. In addition, the Bank had a liability for all legally binding unfunded commitments of $14.13 million and $15.71 million at June 30, 2018 and December 31, 2017, respectively.

Financial Instruments with Off-Balance-Sheet Risk — 1st Source and its subsidiaries are parties to financial instruments with off-balance-sheet risk in the normal course of business. These off-balance-sheet financial instruments include commitments to originate and sell loans and standby letters of credit. The instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the Statements of Financial Condition.

The following table shows financial instruments whose contract amounts represent credit risk.

(Dollars in thousands)	June 30, 2018		December 31, 2017
Amounts of commitments:
Loan commitments to extend credit	$	1,022,077	$	1,030,334
Standby letters of credit	$	30,911	$	29,961
Commercial and similar letters of credit	$	2,113	$	1,837

The exposure to credit loss in the event of nonperformance by the other party to the financial instruments for loan commitments and standby letters of credit is represented by the dollar amount of those instruments. The Company uses the same credit policies and collateral requirements in making commitments and conditional obligations as it does for on-balance-sheet instruments.

The Bank grants mortgage loan commitments to borrowers, subject to normal loan underwriting standards. The interest rate risk associated with these loan commitments is managed by entering into contracts for future deliveries of loans. Loan commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements.

Standby letters of credit are conditional commitments that guarantee the performance of a client to a third party. The credit risk involved in and collateral obtained when issuing standby letters of credit is essentially the same as that involved in extending loan commitments to clients. Standby letters of credit generally have terms ranging from six months to one year.

Commercial letters of credit are issued specifically to facilitate commerce and typically result in the commitment being drawn on when the underlying transaction is consummated between the customer and the third party. Commercial letters of credit generally have terms ranging from three months to six months.

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Derivative Financial Instruments

6 Months Ended

Jun. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

Derivative Financial Instruments

Commitments to originate residential mortgage loans held for sale and forward commitments to sell residential mortgage loans are considered derivative instruments. See Note 7 for further information.

The Company has certain interest rate derivative positions that are not designated as hedging instruments. Derivative assets and liabilities are recorded at fair value on the balance sheet and do not take into account the effects of master netting agreements. Master netting agreements allow the Company to settle all derivative contracts held with a single counterparty on a net basis, and to offset net derivative positions with related collateral, where applicable. These derivative positions relate to transactions in which the Company enters into an interest rate swap with a client while at the same time entering into an offsetting interest rate swap with another financial institution. In connection with each transaction, the Company agrees to pay interest to the client on a notional amount at a variable interest rate and receive interest from the client on the same notional amount at a fixed interest rate. At the same time, the Company agrees to pay another financial institution the same fixed interest rate on the same notional amount and receive the same variable interest rate on the same notional amount. The transaction allows the client to effectively convert a variable rate loan to a fixed rate. Because the terms of the swaps with the customers and the other financial institutions offset each other, with the only difference being counterparty credit risk, changes in the fair value of the underlying derivative contracts are not materially different and do not significantly impact the Company’s results of operations.

The following table shows the amounts of non-hedging derivative financial instruments.

			Asset derivatives			Liability derivatives
(Dollars in thousands)	Notional or contractual amount		Statement of Financial Condition classification	Fair value		Statement of Financial Condition classification	Fair value
June 30, 2018
Interest rate swap contracts	$	789,268	Other assets	$	7,349	Other liabilities	$	7,480
Loan commitments	6,931		Mortgages held for sale	123		N/A	—
Forward contracts - mortgage loan	13,873		N/A	—		Mortgages held for sale	47
Total	$	810,072		$	7,472		$	7,527
December 31, 2017
Interest rate swap contracts	$	756,550	Other assets	$	5,167	Other liabilities	$	5,262
Loan commitments	8,504		Mortgages held for sale	66		N/A	—
Forward contracts - mortgage loan	19,390		N/A	—		Mortgages held for sale	10
Total	$	784,444		$	5,233		$	5,272

The following table shows the amounts included in the Statements of Income for non-hedging derivative financial instruments.

		Gain (loss)
		Three Months Ended   June 30,						Six Months Ended   June 30,
(Dollars in thousands)	Statement of Income classification	2018			2017			2018			2017
Interest rate swap contracts	Other expense	$	(35	)	$	—		$	(36	)	$	20
Interest rate swap contracts	Other income	246			92			579			211
Loan commitments	Mortgage banking	61			(18		)	57			37
Forward contracts - mortgage loan	Mortgage banking	(40		)	117			(37		)	(195		)
Total		$	232		$	191		$	563		$	73

The following table shows the offsetting of financial assets and derivative assets.

							Gross Amounts Not Offset in the Statement of Financial Condition
(Dollars in thousands)	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Statement of Financial Condition		Net Amounts of Assets Presented in the Statement of Financial Condition		Financial Instruments		Cash Collateral Received		Net Amount
June 30, 2018
Interest rate swaps	$	7,355	$	6	$	7,349	$	—	$	—	$	7,349
December 31, 2017
Interest rate swaps	$	5,194	$	27	$	5,167	$	—	$	—	$	5,167

The following table shows the offsetting of financial liabilities and derivative liabilities.

							Gross Amounts Not Offset in the Statement of Financial Condition
(Dollars in thousands)	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Statement of Financial Condition		Net Amounts of Liabilities Presented in the Statement of Financial Condition		Financial Instruments		Cash Collateral Pledged		Net Amount
June 30, 2018
Interest rate swaps	$	7,486	$	6	$	7,480	$	—	$	4,715	$	2,765
Repurchase agreements	106,861		—		106,861		106,861		—		—
Total	$	114,347	$	6	$	114,341	$	106,861	$	4,715	$	2,765
December 31, 2017
Interest rate swaps	$	5,289	$	27	$	5,262	$	—	$	2,705	$	2,557
Repurchase agreements	149,835		—		149,835		149,835		—		—
Total	$	155,124	$	27	$	155,097	$	149,835	$	2,705	$	2,557

If a default in performance of any obligation of a repurchase agreement occurs, each party will set-off property held in respect of transactions against obligations owing in respect of any other transactions. At June 30, 2018 and December 31, 2017, repurchase agreements had a remaining contractual maturity of $104.45 million and $148.22 million in overnight, $2.41 million and $1.32 million in up to 30 days, and $0.00 million and $0.30 million in greater than 90 days, respectively and were collateralized by U.S. Treasury and Federal agencies securities.

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Earnings Per Share

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Earnings Per Share

Earnings Per Share

Earnings per common share is computed using the two-class method. Basic earnings per common share is computed by dividing net income available to common shareholders by the weighted-average number of common shares outstanding during the applicable period, excluding outstanding participating securities. Participating securities include non-vested restricted stock awards. Non-vested restricted stock awards are considered participating securities to the extent the holders of these securities receive non-forfeitable dividends at the same rate as holders of common stock. Diluted earnings per common share is computed using the weighted-average number of shares determined for the basic earnings per common share computation plus the dilutive effect of stock compensation using the treasury stock method.

Stock options, where the exercise price was greater than the average market price of the common shares, were excluded from the computation of diluted earnings per common share because the result would have been antidilutive. There were no stock options outstanding as of June 30, 2018 and 2017.

The following table presents a reconciliation of the number of shares used in the calculation of basic and diluted earnings per common share.

	Three Months Ended   June 30,				Six Months Ended   June 30,
(Dollars in thousands - except per share amounts)	2018		2017		2018		2017
Distributed earnings allocated to common stock	$	6,225	$	4,923	$	11,929	$	9,586
Undistributed earnings allocated to common stock	15,591		11,618		28,869		23,040
Net earnings allocated to common stock	21,816		16,541		40,798		32,626
Net earnings allocated to participating securities	148		128		282		249
Net income allocated to common stock and participating securities	$	21,964	$	16,669	$	41,080	$	32,875
Weighted average shares outstanding for basic earnings per common share	25,958,128		25,927,032		25,954,278		25,915,280
Dilutive effect of stock compensation	—		—		—		—
Weighted average shares outstanding for diluted earnings per common share	25,958,128		25,927,032		25,954,278		25,915,280
Basic earnings per common share	$	0.84	$	0.64	$	1.57	$	1.26
Diluted earnings per common share	$	0.84	$	0.64	$	1.57	$	1.26

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Stock Based Compensation

6 Months Ended

Jun. 30, 2018

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

Stock Based Compensation

Stock Based Compensation

As of June 30, 2018, the Company had four active stock-based employee compensation plans, which are more fully described in Note 16 of the Consolidated Financial Statements in 1st Source’s Annual Report on Form 10-K for the year ended December 31, 2017. These plans include three executive stock award plans, the Executive Incentive Plan, the Restricted Stock Award Plan, the Strategic Deployment Incentive Plan; and the Employee Stock Purchase Plan. The 2011 Stock Option Plan was approved by the shareholders on April 21, 2011 but the Company had not made any grants through June 30, 2018.

Stock-based compensation expense for all stock-based compensation awards granted is based on the grant-date fair value. For all awards except stock option awards, the grant date fair value is either the fair market value per share or book value per share (corresponding to the type of stock awarded) as of the grant date. For stock option awards, the grant date fair value is estimated using the Black-Scholes option pricing model. For all awards the Company recognizes these compensation costs on a straight-line basis over the requisite service period of the award, for which the Company uses the related vesting term.

Total fair value of options vested and expensed was zero for the six months ended June 30, 2018 and 2017. As of June 30, 2018 and 2017 there were no outstanding stock options. There were no stock options exercised during the six months ended June 30, 2018 and 2017. All shares issued in connection with stock option exercises are issued from available treasury stock.

As of June 30, 2018, there was $6.69 million of total unrecognized compensation cost related to non-vested share-based compensation arrangements. That cost is expected to be recognized over a weighted-average period of 3.25 years.

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Accumulated Other Comprehensive Income

6 Months Ended

Jun. 30, 2018

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Accumulated Other Comprehensive Income

Accumulated Other Comprehensive Income (Loss)

The following table presents reclassifications out of accumulated other comprehensive income (loss) related to unrealized gains and losses on available-for-sale securities.

	Three Months Ended   June 30,					Six Months Ended   June 30,						Affected Line Item in the Statements of Income
(Dollars in thousands)	2018		2017			2018			2017
Realized gains (losses) included in net income	$	—	$	465		$	(345	)	$	1,750		Gains (losses) on investment securities available-for-sale
	—		465			(345		)	1,750			Income before income taxes
Tax effect	—		(175		)	83			(657		)	Income tax expense
Net of tax	$	—	$	290		$	(262	)	$	1,093		Net income

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Income Taxes

6 Months Ended

Jun. 30, 2018

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The total amount of unrecognized tax benefits that would affect the effective tax rate if recognized was zero at June 30, 2018 and $0.72 million at December 31, 2017. Interest and penalties are recognized through the income tax provision. For the six months ended June 30, 2018 and 2017, the Company recognized $(0.09) million and $0.04 million in interest or penalties, respectively. There was $0.00 million and $0.09 million in accrued interest and penalties at June 30, 2018 and December 31, 2017, respectively.

Tax years that remain open and subject to audit include the federal 2014-2017 years and the Indiana 2014-2017 years. Additionally, the Company reached a state tax settlement for the 2015-2017 years and as a result, recorded a reduction of unrecognized tax benefits in the amount of $1.05 million. The Company does not anticipate a significant change in the amount of uncertain tax positions within the next 12 months.

The Tax Cuts and Jobs Act was enacted on December 22, 2017. The Act reduces the U.S. federal corporate tax rate from 35% to 21%, effective January 1, 2018. At June 30, 2018 and December 31, 2017, the Company had not completed its accounting for the tax effects of enactment of the Act; however, in certain cases, as described below, the Company made a reasonable estimate of the effects on its existing deferred tax balances. The Company will continue to make and refine its calculations as additional analysis is completed. In addition, the Company's estimates may also be affected as it gains a more thorough understanding of the tax law.

Provisional amounts

Deferred tax assets and liabilities: The Company remeasured certain deferred tax assets and liabilities based on the rates at which it expects to reverse in the future, which is generally 21%. However, the Company is still analyzing certain aspects of the Act and refining its calculations, which could potentially affect the measurement of these balances or potentially give rise to new deferred tax amounts. The provisional amount recorded related to the remeasurement of its deferred tax balance was a benefit of $2.61 million, which was included as a component of Income Tax Expense in the December 31, 2017 Consolidated Statements of Income and decreased the effective rate by 2.6%.

Further, at June 30, 2018 and December 31, 2017, the Company was unable to fully revalue the deferred tax liabilities associated with its partnership investments in renewable energy and affordable housing and estimated the deferred tax liability associated with those projects to be $1.92 million. This estimation was necessary due to incomplete information for 2017 operations from those partnerships. Upon receipt of the partnership Form1065 K-1’s, the Company will complete the revaluation of those related deferred tax liabilities as provided by the U.S. Securities and Exchange Commission’s SAB No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act.

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Fair Value Measurements

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

The Company records certain assets and liabilities at fair value. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value measurements are also utilized to determine the initial value of certain assets and liabilities, to perform impairment assessments, and for disclosure purposes. The Company uses quoted market prices and observable inputs to the maximum extent possible when measuring fair value. In the absence of quoted market prices, various valuation techniques are utilized to measure fair value. When possible, observable market data for identical or similar financial instruments is used in the valuation. When market data is not available, fair value is determined using valuation models that incorporate management’s estimates of the assumptions a market participant would use in pricing the asset or liability.

Fair value measurements are classified within one of three levels based on the observability of the inputs used to determine fair value, as follows:

• Level 1 — The valuation is based on quoted prices in active markets for identical instruments.

• Level 2 — The valuation is based on observable inputs such as quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market.

• Level 3 — The valuation is based on unobservable inputs that are supported by minimal or no market activity and that are significant to the fair value of the instrument. Level 3 valuations are typically performed using pricing models, discounted cash flow methodologies, or similar techniques that incorporate management’s own estimates of assumptions that market participants would use in pricing the instrument, or valuations that require significant management judgment or estimation.

A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.

The Company elected fair value accounting for mortgages held for sale. The Company believes the election for mortgages held for sale (which are economically hedged with free-standing derivatives) will reduce certain timing differences and better match changes in the value of these assets with changes in the value of derivatives used as economic hedges for these assets. At June 30, 2018 and December 31, 2017, all mortgages held for sale were carried at fair value.

The following table shows the differences between the fair value carrying amount of mortgages held for sale measured at fair value and the aggregate unpaid principal amount the Company is contractually entitled to receive at maturity.

(Dollars in thousands)	Fair value carrying amount		Aggregate unpaid principal		Excess of fair value carrying amount over (under) unpaid principal
June 30, 2018
Mortgages held for sale reported at fair value	$	8,235	$	8,051	$	184	(1)
December 31, 2017
Mortgages held for sale reported at fair value	$	13,123	$	12,967	$	156	(1)

(1) The excess of fair value carrying amount over (under) unpaid principal is included in mortgage banking income and includes changes in fair value at and subsequent to funding and gains and losses on the related loan commitment prior to funding.

Financial Instruments on Recurring Basis:

The following is a description of the valuation methodologies used for financial instruments measured at fair value on a recurring basis:

Investment securities available-for-sale are valued primarily by a third party pricing agent. Prices supplied by the independent pricing agent, as well as their pricing methodologies and assumptions, are reviewed by the Company for reasonableness and to ensure such prices are aligned with market levels. In general, the Company’s investment securities do not possess a complex structure that could introduce greater valuation risk. The portfolio mainly consists of traditional investments including U.S. Treasury and Federal agencies securities, Federal agency mortgage pass-through securities, and general obligation and revenue municipal bonds. Pricing for such instruments is fairly generic and is easily obtained. On a quarterly basis, prices supplied by the pricing agent are validated by comparison to prices obtained from other third party sources for a material portion of the portfolio.

The valuation policy and procedures for Level 3 fair value measurements of available-for-sale debt securities are decided through collaboration between management of the Corporate Accounting and Funds Management departments. The changes in fair value measurement for Level 3 securities are analyzed on a periodic basis under a collaborative framework with the aforementioned departments. The methodology and variables used for input are derived from the combination of observable and unobservable inputs. The unobservable inputs are determined through internal assumptions that may vary from period to period due to external factors, such as market movement and credit rating adjustments.

Both the market and income valuation approaches are implemented using the following types of inputs:

• U.S. treasuries are priced using the market approach and utilizing live data feeds from active market exchanges for identical securities.

• Government-sponsored agency debt securities and corporate bonds are primarily priced using available market information through processes such as benchmark curves, market valuations of like securities, sector groupings and matrix pricing.

• Other government-sponsored agency securities, mortgage-backed securities and some of the actively traded REMICs and CMOs, are primarily priced using available market information including benchmark yields, prepayment speeds, spreads and volatility of similar securities.

• Inactively traded government-sponsored agency securities are primarily priced using consensus pricing and dealer quotes.

• State and political subdivisions are largely grouped by characteristics, i.e., geographical data and source of revenue in trade dissemination systems. Since some securities are not traded daily and due to other grouping limitations, active market quotes are often obtained using benchmarking for like securities. Local direct placement municipal securities, with very little market activity, are priced using an appropriate market yield curve, which includes a credit spread assumption.

• Marketable equity (common) securities are primarily priced using the market approach and utilizing live data feeds from active market exchanges for identical securities.

Mortgages held for sale and the related loan commitments and forward contracts (hedges) are valued using a market value approach and utilizing an appropriate current market yield and a loan commitment closing rate based on historical analysis.

Interest rate swap positions, both assets and liabilities, are valued by a third party pricing agent using an income approach and utilizing models that use as their basis readily observable market parameters. This valuation process considers various factors including interest rate yield curves, time value and volatility factors. Validation of third party agent valuations is accomplished by comparing those values to the Company’s swap counterparty valuations. Management believes an adjustment is required to “mid-market” valuations for derivatives tied to its performing loan portfolio to recognize the imprecision and related exposure inherent in the process of estimating expected credit losses as well as velocity of deterioration evident with systemic risks embedded in these portfolios. Any change in the mid-market derivative valuation adjustment will be recognized immediately through the Consolidated Statements of Income.

The following table shows the balance of assets and liabilities measured at fair value on a recurring basis.

(Dollars in thousands)	Level 1		Level 2		Level 3		Total
June 30, 2018
Assets:
Investment securities available-for-sale:
U.S. Treasury and Federal agencies securities	$	33,671	$	490,463	$	—	$	524,134
U.S. States and political subdivisions securities	—		94,261		1,641		95,902
Mortgage-backed securities — Federal agencies	—		302,279		—		302,279
Corporate debt securities	—		45,327		—		45,327
Foreign government and other securities	—		—		707		707
Total debt securities available-for-sale	33,671		932,330		2,348		968,349
Mortgages held for sale	—		8,235		—		8,235
Accrued income and other assets (interest rate swap agreements)	—		7,349		—		7,349
Total	$	33,671	$	947,914	$	2,348	$	983,933
Liabilities:
Accrued expenses and other liabilities (interest rate swap agreements)	$	—	$	7,480	$	—	$	7,480
Total	$	—	$	7,480	$	—	$	7,480
December 31, 2017
Assets:
Investment securities available-for-sale:
U.S. Treasury and Federal agencies securities	$	27,971	$	440,148	$	—	$	468,119
U.S. States and political subdivisions securities	—		113,845		2,155		116,000
Mortgage-backed securities — Federal agencies	—		287,910		—		287,910
Corporate debt securities	—		31,294		—		31,294
Foreign government and other securities	—		—		710		710
Total debt securities available-for-sale	27,971		873,197		2,865		904,033
Mortgages held for sale	—		13,123		—		13,123
Accrued income and other assets (interest rate swap agreements)	—		5,167		—		5,167
Total	$	27,971	$	891,487	$	2,865	$	922,323
Liabilities:
Accrued expenses and other liabilities (interest rate swap agreements)	$	—	$	5,262	$	—	$	5,262
Total	$	—	$	5,262	$	—	$	5,262

The following table shows changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the quarter ended June 30, 2018 and 2017.

(Dollars in thousands)	U.S. States and political subdivisions securities			Foreign government and other securities			Investment securities available-for-sale
Beginning balance April 1, 2018	$	2,155		$	708		$	2,863
Total gains or losses (realized/unrealized):
Included in earnings	—			—			—
Included in other comprehensive income	4			(1		)	3
Purchases	—			—			—
Issuances	—			—			—
Sales	—			—			—
Settlements	—			—			—
Maturities	(518		)	—			(518		)
Transfers into Level 3	—			—			—
Transfers out of Level 3	—			—			—
Ending balance June 30, 2018	$	1,641		$	707		$	2,348
Beginning balance April 1, 2017	$	2,018		$	804		$	2,822
Total gains or losses (realized/unrealized):
Included in earnings	—			—			—
Included in other comprehensive income	11			(2		)	9
Purchases	287			—			287
Issuances	—			—			—
Sales	—			—			—
Settlements	—			—			—
Maturities	(515		)	(500		)	(1,015		)
Transfers into Level 3	—			—			—
Transfers out of Level 3	—			—			—
Ending balance June 30, 2017	$	1,801		$	302		$	2,103

There were no gains or losses for the period included in earnings attributable to the change in unrealized gains or losses relating to assets and liabilities still held at June 30, 2018 or 2017. No transfers between levels occurred during the three months ended June 30, 2018 or 2017.

The following table shows the valuation methodology and unobservable inputs for Level 3 assets and liabilities measured at fair value on a recurring basis.

(Dollars in thousands)	Fair Value		Valuation Methodology	Unobservable Inputs	Range of Inputs
June 30, 2018
Debt securities available-for sale
Direct placement municipal securities	$	1,641	Discounted cash flows	Credit spread assumption	0.11% - 3.02%
Foreign government	$	707	Discounted cash flows	Market yield assumption	0.00% - 1.21%
December 31, 2017
Debt securities available-for sale
Direct placement municipal securities	$	2,155	Discounted cash flows	Credit spread assumption	2.21% - 2.93%
Foreign government	$	710	Discounted cash flows	Market yield assumption	0.35% - 1.23%

The sensitivity to changes in the unobservable inputs and their impact on the fair value measurement can be significant. The significant unobservable input for direct placement municipal securities are the credit spread assumptions used to determine the fair value measure. An increase (decrease) in the estimated spread assumption of the market will decrease (increase) the fair value measure of the securities. The significant unobservable input for foreign government securities are the market yield assumptions. The market yield assumption is negatively correlated to the fair value measure. An increase (decrease) in the determined market yield assumption will decrease (increase) the fair value measurement.

Financial Instruments on Non-recurring Basis:

The Company may be required, from time to time, to measure certain other financial assets at fair value on a non-recurring basis in accordance with GAAP. These adjustments to fair value usually result from application of lower of cost or market accounting or impairment charges of individual assets.

The Credit Policy Committee (CPC), a management committee, is responsible for overseeing the valuation processes and procedures for Level 3 measurements of impaired loans, other real estate and repossessions. The CPC reviews these assets on a quarterly basis to determine the accuracy of the observable inputs, generally third party appraisals, auction values, values derived from trade publications and data submitted by the borrower, and the appropriateness of the unobservable inputs, generally discounts due to current market conditions and collection issues. The CPC establishes discounts based on asset type and valuation source; deviations from the standard are documented. The discounts are reviewed periodically, annually at a minimum, to determine they remain appropriate. Consideration is given to current trends in market values for the asset categories and gains and losses on sales of similar assets. The Loan and Funds Management Committee of the Board of Directors is responsible for overseeing the CPC.

Discounts vary depending on the nature of the assets and the source of value. Aircraft are generally valued using quarterly trade publications adjusted for engine time, condition, maintenance programs, discounted by 10%. Likewise, autos are valued using current auction values, discounted by 10%; medium and heavy duty trucks are valued using trade publications and auction values, discounted by 15%. Construction equipment is generally valued using trade publications and auction values, discounted by 20%. Real estate is valued based on appraisals or evaluations, discounted by 20% with higher discounts for property in poor condition or property with characteristics which may make it more difficult to market. Commercial loans subject to borrowing base certificates are generally discounted by 20% for receivables and 40% - 75% for inventory with higher discounts when monthly borrowing base certificates are not required or received.

Impaired loans and related write-downs are based on the fair value of the underlying collateral if repayment is expected solely from the collateral. Collateral values are reviewed quarterly and estimated using customized discounting criteria, appraisals and dealer and trade magazine quotes which are used in a market valuation approach. In accordance with fair value measurements, only impaired loans for which a reserve for loan loss has been established based on the fair value of collateral require classification in the fair value hierarchy. As a result, only a portion of the Company’s impaired loans are classified in the fair value hierarchy.

Partnership investments and the adjustments to fair value primarily result from application of lower of cost or fair value accounting. The partnership investments are priced using financial statements provided by the partnerships. Quantitative unobservable inputs are not reasonably available for reporting purposes.

The Company has established MSRs valuation policies and procedures based on industry standards and to ensure valuation methodologies are consistent and verifiable. MSRs and related adjustments to fair value result from application of lower of cost or fair value accounting. For purposes of impairment, MSRs are stratified based on the predominant risk characteristics of the underlying servicing, principally by loan type. The fair value of each tranche of the servicing portfolio is estimated by calculating the present value of estimated future net servicing cash flows, taking into consideration actual and expected mortgage loan prepayment rates, discount rates, servicing costs, and other economic factors. Prepayment rates and discount rates are derived through a third party pricing agent. Changes in the most significant inputs, including prepayment rates and discount rates, are compared to the changes in the fair value measurements and appropriate resolution is made. A fair value analysis is also obtained from an independent third party agent and compared to the internal valuation for reasonableness. MSRs do not trade in an active, open market with readily observable prices and though sales of MSRs do occur, precise terms and conditions typically are not readily available and the characteristics of the Company’s servicing portfolio may differ from those of any servicing portfolios that do trade.

Other real estate is based on the fair value of the underlying collateral less expected selling costs. Collateral values are estimated primarily using appraisals and reflect a market value approach. Fair values are reviewed quarterly and new appraisals are obtained annually. Repossessions are similarly valued.

For assets measured at fair value on a nonrecurring basis the following represents impairment charges (recoveries) recognized on these assets during the quarter ended June 30, 2018: impaired loans - $0.00 million; partnership investments - $0.00 million;mortgage servicing rights - $0.00 million; repossessions - $0.28 million; and other real estate - $0.00 million.

The following table shows the carrying value of assets measured at fair value on a non-recurring basis.

(Dollars in thousands)	Level 1		Level 2		Level 3		Total
June 30, 2018
Impaired loans - collateral based	$	—	$	—	$	17,602	$	17,602
Accrued income and other assets (partnership investments)	—		—		1,000		1,000
Accrued income and other assets (mortgage servicing rights)	—		—		4,323		4,323
Accrued income and other assets (repossessions)	—		—		9,389		9,389
Accrued income and other assets (other real estate)	—		—		133		133
Total	$	—	$	—	$	32,447	$	32,447
December 31, 2017
Impaired loans - collateral based	$	—	$	—	$	7,994	$	7,994
Accrued income and other assets (partnership investments)	—		—		1,000		1,000
Accrued income and other assets (mortgage servicing rights)	—		—		4,349		4,349
Accrued income and other assets (repossessions)	—		—		10,114		10,114
Accrued income and other assets (other real estate)	—		—		1,312		1,312
Total	$	—	$	—	$	24,769	$	24,769

The following table below shows the valuation methodology and unobservable inputs for Level 3 assets and liabilities measured at fair value on a non-recurring basis.

(Dollars in thousands)	Carrying Value		Fair Value		Valuation Methodology	Unobservable Inputs	Range of Inputs
June 30, 2018
Impaired loans	$	17,602	$	17,602	Collateral based measurements including appraisals, trade publications, and auction values	Discount for lack of marketability and current conditions	10% -30%
Mortgage servicing rights	4,323		7,536		Discounted cash flows	Constant prepayment rate (CPR)	7.1% - 22.5%
						Discount rate	10.1% - 13.0%
Repossessions	9,389		9,875		Appraisals, trade publications and auction values	Discount for lack of marketability	4% - 10%
Other real estate	133		176		Appraisals	Discount for lack of marketability	8% - 61%
December 31, 2017
Impaired loans	$	7,994	$	7,994	Collateral based measurements including appraisals, trade publications, and auction values	Discount for lack of marketability and current conditions	3% - 20%
Mortgage servicing rights	4,349		7,187		Discounted cash flows	Constant prepayment rate (CPR)	8.6% - 20.7%
						Discount rate	9.6% - 12.5%
Repossessions	10,114		10,493		Appraisals, trade publications and auction values	Discount for lack of marketability	3% - 10%
Other real estate	1,312		1,441		Appraisals	Discount for lack of marketability	7% - 9%

GAAP requires disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring or non-recurring basis.

The following table shows the fair values of the Company’s financial instruments.

(Dollars in thousands)	Carrying or Contract Value		Fair Value		Level 1		Level 2		Level 3
June 30, 2018
Assets:
Cash and due from banks	$	71,102	$	71,102	$	71,102	$	—	$	—
Federal funds sold and interest bearing deposits with other banks	73,358		73,358		73,358		—		—
Investment securities, available-for-sale	968,349		968,349		33,671		932,330		2,348
Other investments	28,159		28,159		28,159		—		—
Mortgages held for sale	8,235		8,235		—		8,235		—
Loans and leases, net of reserve for loan and lease losses	4,736,816		4,690,436		—		—		4,690,436
Mortgage servicing rights	4,323		7,536		—		—		7,536
Interest rate swaps	7,349		7,349		—		7,349		—
Liabilities:
Deposits	$	5,108,439	$	5,095,168	$	3,601,586	$	1,493,582	$	—
Short-term borrowings	277,094		277,094		106,268		170,826		—
Long-term debt and mandatorily redeemable securities	71,194		68,373		—		68,373		—
Subordinated notes	58,764		48,956		—		48,956		—
Interest rate swaps	7,480		7,480		—		7,480		—
Off-balance-sheet instruments *	—		294		—		294		—
December 31, 2017
Assets:
Cash and due from banks	$	73,635	$	73,635	$	73,635	$	—	$	—
Federal funds sold and interest bearing deposits with other banks	4,398		4,398		4,398		—		—
Investment securities, available-for-sale	904,033		904,033		27,971		873,197		2,865
Other investments	25,953		25,953		25,953		—		—
Mortgages held for sale	13,123		13,123		—		13,123		—
Loans and leases, net of reserve for loan and lease losses	4,432,795		4,428,848		—		—		4,428,848
Mortgage servicing rights	4,349		7,187		—		—		7,187
Interest rate swaps	5,167		5,167		—		5,167		—
Liabilities:
Deposits	$	4,752,730	$	4,745,111	$	3,482,757	$	1,262,354	$	—
Short-term borrowings	214,595		214,595		206,862		7,733		—
Long-term debt and mandatorily redeemable securities	70,060		67,857		—		67,857		—
Subordinated notes	58,764		57,103		—		57,103		—
Interest rate swaps	5,262		5,262		—		5,262		—
Off-balance-sheet instruments *	—		286		—		286		—

* Represents estimated cash outflows required to currently settle the obligations at current market rates.

The methodologies for estimating fair value of financial assets and financial liabilities that are measured at fair value on a recurring or non-recurring basis are discussed above. The estimated fair value approximates carrying value for cash and due from banks, federal funds sold and interest bearing deposits with other banks and other investments. The methodologies for other financial assets and financial liabilities are discussed below:

Loans and Leases — For June 30, 2018, fair values of loans and leases are estimated on an exit price basis incorporating discounts for credit, liquidity and marketability factors. This is not comparable with the fair values disclosed for December 31, 2017, which were based on an entrance price basis. For that date, fair values of variable rate loans and leases that reprice frequently and with no significant change in credit risk were based on carrying values. The fair values of other loans and leases as of that date were estimated using discounted cash flow analyses which used interest rates then being offered for loans and leases with similar terms to borrowers of similar credit quality.

Deposits — The fair values for all deposits other than time deposits are equal to the amounts payable on demand (the carrying value). Fair values of variable rate time deposits are equal to their carrying values. Fair values for fixed rate time deposits are estimated using discounted cash flow analyses using interest rates currently being offered for deposits with similar remaining maturities.

Short-Term Borrowings — The carrying values of Federal funds purchased, securities sold under repurchase agreements, and other short-term borrowings, including the liability related to mortgage loans available for repurchase under GNMA optional repurchase programs, approximate their fair values.

Long-Term Debt and Mandatorily Redeemable Securities — The fair values of long-term debt are estimated using discounted cash flow analyses, based on the current estimated incremental borrowing rates for similar types of borrowing arrangements. The carrying values of mandatorily redeemable securities are based on the current estimated cost of redeeming these securities which approximate their fair values.

Subordinated Notes — Fair values are estimated based on calculated market prices of comparable securities.

Off-Balance-Sheet Instruments — Contract and fair values for certain off-balance-sheet financial instruments (guarantees) are estimated based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing.

Limitations — Fair value estimates are made at a specific point in time based on relevant market information and information about the financial instruments. Because no market exists for a significant portion of the financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other such factors.

These estimates do not reflect any premium or discount that could result from offering for sale at one time the Company’s entire holdings of a particular financial instrument. These estimates are subjective in nature and require considerable judgment to interpret market data. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company could realize in a current market exchange, nor are they intended to represent the fair value of the Company as a whole. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. The fair value estimates presented herein are based on pertinent information available to management as of the respective balance sheet date. Although the Company is not aware of any factors that would significantly affect the estimated fair value amounts, such amounts have not been comprehensively revalued since the presentation dates, and therefore, estimates of fair value after the balance sheet date may differ significantly from the amounts presented herein.

Other significant assets, such as premises and equipment, other assets, and liabilities not defined as financial instruments, are not included in the above disclosures. Also, the fair value estimates for deposits do not include the benefit that results from the low-cost funding provided by the deposit liabilities compared to the cost of borrowing funds in the market.

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Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation – The accompanying unaudited consolidated financial statements reflect all adjustments (all of which are normal and recurring in nature) which are, in the opinion of management, necessary for a fair presentation of the consolidated financial position, the results of operations, changes in comprehensive income, changes in shareholders’ equity, and cash flows for the periods presented. These unaudited consolidated financial statements have been prepared according to the rules and regulations of the Securities and Exchange Commission (SEC) and, therefore, certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (GAAP) have been omitted.

The Notes to the Consolidated Financial Statements appearing in 1st Source Corporation’s Annual Report on Form 10-K (2017 Annual Report), which include descriptions of significant accounting policies, should be read in conjunction with these interim financial statements. The Consolidated Statement of Financial Condition at December 31, 2017 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by GAAP for complete financial statements. Certain amounts in the prior period consolidated financial statements have been reclassified to conform to the current period presentation.

Use of Estimates in the Preparation of Financial Statements

Use of Estimates in the Preparation of Financial Statements – Financial statements prepared in accordance with GAAP require the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expense during the reporting period. Actual results could differ from those estimates.

Loans and Leases

Loans and Leases – Loans are stated at the principal amount outstanding, net of unamortized deferred loan origination fees and costs and net of unearned income. Interest income is accrued as earned based on unpaid principal balances. Origination fees and direct loan and lease origination costs are deferred and the net amount amortized to interest income over the estimated life of the related loan or lease. Loan commitment fees are deferred and amortized into other income over the commitment period.

Direct financing leases are carried at the aggregate of lease payments plus estimated residual value of the leased property, net of unamortized deferred lease origination fees and costs and unearned income. Interest income on direct financing leases is recognized over the term of the lease to achieve a constant periodic rate of return on the outstanding investment.

The accrual of interest on loans and leases is discontinued when a loan or lease becomes contractually delinquent for 90 days, or when an individual analysis of a borrower’s credit worthiness indicates a credit should be placed on nonperforming status, except for residential mortgage loans and consumer loans that are well secured and in the process of collection. Residential mortgage loans are placed on nonaccrual at the time the loan is placed in foreclosure. When interest accruals are discontinued, interest credited to income in the current year is reversed and interest accrued in the prior year is charged to the reserve for loan and lease losses. However, in some cases, the Company may elect to continue the accrual of interest when the net realizable value of collateral is sufficient to cover the principal and accrued interest. When a loan or lease is classified as nonaccrual and the future collectibility of the recorded loan or lease balance is doubtful, collections on interest and principal are applied as a reduction to principal outstanding. Loans are returned to accrual status when all principal and interest amounts contractually due are brought current and future payments are reasonably assured, which is typically evidenced by a sustained repayment performance of at least six months.

A loan or lease is considered impaired, based on current information and events, if it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan or lease agreement. Interest on impaired loans and leases, which are not classified as nonaccrual, is recognized on the accrual basis. The Company evaluates loans and leases exceeding $100,000 for impairment and establishes a specific reserve as a component of the reserve for loan and lease losses when it is probable all amounts due will not be collected pursuant to the contractual terms of the loan or lease and the recorded investment in the loan or lease exceeds its fair value.

Loans and leases that have been modified and economic concessions have been granted to borrowers who have experienced financial difficulties are considered a troubled debt restructuring (TDR) and, by definition, are deemed an impaired loan. These concessions typically result from the Company’s loss mitigation activities and may include reductions in the interest rate, payment extensions, forgiveness of principal, forbearance or other actions. Certain TDRs are classified as nonperforming at the time of restructuring and typically are returned to performing status after considering the borrower’s sustained repayment performance for a reasonable period of at least six months.

When the Company modifies loans and leases in a TDR, it evaluates any possible impairment similar to other impaired loans based on the present value of expected future cash flows, discounted at the contractual interest rate of the original loan or lease agreement, or uses the current fair value of the collateral, less selling costs for collateral dependent loans. If the Company determines that the value of the modified loan is less than the recorded investment in the loan (net of previous charge-offs, deferred loan fees or costs and unamortized premium or discount), impairment is recognized through a reserve for loan and lease losses estimate or a charge-off to the reserve for loan and lease losses. In periods subsequent to modification, the Company evaluates all TDRs, including those that have payment defaults, for possible impairment and recognizes impairment through the reserve for loan and lease losses.

Revenue Recognition

Revenue Recognition

The Company recognizes revenues as they are earned based on contractual terms, as transactions occur, or as services are provided and collectability is reasonably assured. The Company’s principal source of revenue is interest income from loans and leases and investment securities. The Company also earns noninterest income from various banking and financial services offered primarily through 1st Source Bank (Bank) and its subsidiaries.

Interest Income – The largest source of revenue for the Company is interest income which is primarily recognized on an accrual basis according to nondiscretionary formulas in written contracts, such as loan and lease agreements or investment securities contracts.

Noninterest Income – The Company earns noninterest income through a variety of financial and transaction services provided to corporate and consumer clients such as trust and wealth advisory, deposit account, debit card, mortgage banking, insurance, and equipment rental services. Revenue is recorded for noninterest income based on the contractual terms for the service or transaction performed. In certain circumstances, noninterest income is reported net of associated expenses.

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Investment Securities (Tables)

6 Months Ended

Jun. 30, 2018

Investments, Debt and Equity Securities [Abstract]

Schedule of investment securities available-for-sale

The following table shows investment securities available-for-sale.

(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
June 30, 2018
U.S. Treasury and Federal agencies securities	$	533,030	$	3	$	(8,899	)	$	524,134
U.S. States and political subdivisions securities	96,653		258		(1,009		)	95,902
Mortgage-backed securities — Federal agencies	308,437		831		(6,989		)	302,279
Corporate debt securities	45,882		—		(555		)	45,327
Foreign government and other securities	700		7		—			707
Total debt securities available-for-sale	$	984,702	$	1,099	$	(17,452	)	$	968,349
December 31, 2017
U.S. Treasury and Federal agencies securities	$	471,508	$	57	$	(3,446	)	$	468,119
U.S. States and political subdivisions securities	116,260		648		(908		)	116,000
Mortgage-backed securities — Federal agencies	289,327		1,456		(2,873		)	287,910
Corporate debt securities	31,573		5		(284		)	31,294
Foreign government and other securities	700		10		—			710
Total debt securities available-for-sale	$	909,368	$	2,176	$	(7,511	)	$	904,033

Schedule of contractual maturities of investments in debt securities available-for-sale

The following table shows the contractual maturities of investments in debt securities available-for-sale at June 30, 2018. Expected maturities will differ from contractual maturities, because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

(Dollars in thousands)	Amortized Cost		Fair Value
Due in one year or less	$	59,675	$	59,618
Due after one year through five years	598,258		588,454
Due after five years through ten years	18,332		17,998
Due after ten years	—		—
Mortgage-backed securities	308,437		302,279
Total debt securities available-for-sale	$	984,702	$	968,349

Schedule of gross unrealized losses and fair value by investment category and age

The following table summarizes gross unrealized losses and fair value by investment category and age.

	Less than 12 Months					12 months or Longer					Total
(Dollars in thousands)	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
June 30, 2018
U.S. Treasury and Federal agencies securities	$	414,870	$	(5,481	)	$	88,331	$	(3,418	)	$	503,201	$	(8,899	)
U.S. States and political subdivisions securities	42,123		(421		)	17,498		(588		)	59,621		(1,009		)
Mortgage-backed securities - Federal agencies	176,014		(3,540		)	83,844		(3,449		)	259,858		(6,989		)
Corporate debt securities	35,436		(214		)	9,891		(341		)	45,327		(555		)
Foreign government and other securities	—		—			—		—			—		—
Total debt securities available-for-sale	$	668,443	$	(9,656	)	$	199,564	$	(7,796	)	$	868,007	$	(17,452	)
December 31, 2017
U.S. Treasury and Federal agencies securities	$	311,865	$	(1,161	)	$	89,617	$	(2,285	)	$	401,482	$	(3,446	)
U.S. States and political subdivisions securities	34,971		(287		)	24,909		(621		)	59,880		(908		)
Mortgage-backed securities - Federal agencies	137,169		(1,336		)	60,162		(1,537		)	197,331		(2,873		)
Corporate debt securities	13,747		(57		)	10,048		(227		)	23,795		(284		)
Foreign government and other securities	—		—			—		—			—		—
Total debt securities available-for-sale	$	497,752	$	(2,841	)	$	184,736	$	(4,670	)	$	682,488	$	(7,511	)

Schedule of gross realized gains and losses from securities available-for-sale portfolio

The following table shows the gross realized gains and losses from the securities available-for-sale portfolio, including marketable equity securities. Realized gains and losses of all securities are computed using the specific identification cost basis.

	Three Months Ended   June 30,					Six Months Ended   June 30,
(Dollars in thousands)	2018		2017			2018			2017
Gross realized gains	$	—	$	655		$	2		$	1,940
Gross realized losses	—		—			(347		)	—
OTTI losses	—		(190		)	—			(190		)
Net realized gains (losses)	$	—	$	465		$	(345	)	$	1,750

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Loan and Lease Financings (Tables)

6 Months Ended

Jun. 30, 2018

Receivables [Abstract]

Schedule of credit quality grades of the recorded investment in loans and leases, segregated by class

The following table shows the credit quality grades of the recorded investment in loans and leases, segregated by class.

	Credit Quality Grades
(Dollars in thousands)	1-6		7-12		Total
June 30, 2018
Commercial and agricultural	$	1,014,535	$	33,170	$	1,047,705
Auto and light truck	559,686		20,359		580,045
Medium and heavy duty truck	274,035		2,238		276,273
Aircraft	812,726		50,770		863,496
Construction equipment	624,034		18,600		642,634
Commercial real estate	755,613		14,046		769,659
Total	$	4,040,629	$	139,183	$	4,179,812
December 31, 2017
Commercial and agricultural	$	906,074	$	23,923	$	929,997
Auto and light truck	482,455		14,361		496,816
Medium and heavy duty truck	293,318		3,617		296,935
Aircraft	815,956		28,701		844,657
Construction equipment	552,684		10,753		563,437
Commercial real estate	726,134		15,434		741,568
Total	$	3,776,621	$	96,789	$	3,873,410

Schedule of recorded investment in residential real estate and home equity and consumer loans by performing or nonperforming status

The following table shows the recorded investment in residential real estate and home equity and consumer loans by performing or nonperforming status. Nonperforming loans are those loans which are on nonaccrual status or are 90 days or more past due.

(Dollars in thousands)	Performing		Nonperforming		Total
June 30, 2018
Residential real estate and home equity	$	522,166	$	1,946	$	524,112
Consumer	135,699		200		135,899
Total	$	657,865	$	2,146	$	660,011
December 31, 2017
Residential real estate and home equity	$	523,803	$	2,319	$	526,122
Consumer	127,982		164		128,146
Total	$	651,785	$	2,483	$	654,268

Schedule of recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status

The following table shows the recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status.

(Dollars in thousands)	Current		30-59 Days Past Due		60-89 Days Past Due		90 Days or More Past Due and Accruing		Total Accruing  Loans		Nonaccrual		Total Financing Receivables
June 30, 2018
Commercial and agricultural	$	1,044,377	$	77	$	25	$	—	$	1,044,479	$	3,226	$	1,047,705
Auto and light truck	571,355		2,298		256		—		573,909		6,136		580,045
Medium and heavy duty truck	275,945		17		—		—		275,962		311		276,273
Aircraft	830,633		12,437		—		—		843,070		20,426		863,496
Construction equipment	632,274		4,290		5,034		—		641,598		1,036		642,634
Commercial real estate	767,852		178		65		—		768,095		1,564		769,659
Residential real estate and home equity	521,540		413		213		188		522,354		1,758		524,112
Consumer	134,869		543		287		75		135,774		125		135,899
Total	$	4,778,845	$	20,253	$	5,880	$	263	$	4,805,241	$	34,582	$	4,839,823
December 31, 2017
Commercial and agricultural	$	927,113	$	281	$	—	$	—	$	927,394	$	2,603	$	929,997
Auto and light truck	485,885		2,869		21		—		488,775		8,041		496,816
Medium and heavy duty truck	296,564		—		—		—		296,564		371		296,935
Aircraft	823,638		14,570		4,492		—		842,700		1,957		844,657
Construction equipment	561,665		333		448		—		562,446		991		563,437
Commercial real estate	738,006		23		121		—		738,150		3,418		741,568
Residential real estate and home equity	521,943		1,508		352		429		524,232		1,890		526,122
Consumer	127,107		776		99		30		128,012		134		128,146
Total	$	4,481,921	$	20,360	$	5,533	$	459	$	4,508,273	$	19,405	$	4,527,678

Schedule of impaired loans and leases, segregated by class, and the corresponding reserve for impaired loan and lease losses

The following table shows impaired loans and leases, segregated by class, and the corresponding reserve for impaired loan and lease losses.

(Dollars in thousands)	Recorded Investment		Unpaid Principal Balance		Related Reserve
June 30, 2018
With no related reserve recorded:
Commercial and agricultural	$	2,992	$	2,992	$	—
Auto and light truck	5,789		5,789		—
Medium and heavy duty truck	310		310		—
Aircraft	1,237		1,237		—
Construction equipment	—		—		—
Commercial real estate	582		582		—
Residential real estate and home equity	—		—		—
Consumer	—		—		—
Total with no related reserve recorded	10,910		10,910		—
With a reserve recorded:
Commercial and agricultural	—		—		—
Auto and light truck	226		226		9
Medium and heavy duty truck	—		—		—
Aircraft	19,164		19,164		2,758
Construction equipment	941		941		182
Commercial real estate	908		908		172
Residential real estate and home equity	348		350		130
Consumer	—		—		—
Total with a reserve recorded	21,587		21,589		3,251
Total impaired loans	$	32,497	$	32,499	$	3,251
December 31, 2017
With no related reserve recorded:
Commercial and agricultural	$	2,439	$	2,439	$	—
Auto and light truck	—		—		—
Medium and heavy duty truck	371		371		—
Aircraft	1,901		1,901		—
Construction equipment	584		584		—
Commercial real estate	2,375		2,375		—
Residential real estate and home equity	—		—		—
Consumer	—		—		—
Total with no related reserve recorded	7,670		7,670		—
With a reserve recorded:
Commercial and agricultural	—		—		—
Auto and light truck	7,780		7,780		243
Medium and heavy duty truck	—		—		—
Aircraft	—		—		—
Construction equipment	344		344		108
Commercial real estate	971		971		181
Residential real estate and home equity	352		354		134
Consumer	—		—		—
Total with a reserve recorded	9,447		9,449		666
Total impaired loans	$	17,117	$	17,119	$	666

Schedule of average recorded investment and interest income recognized on impaired loans and leases, segregated by class

The following table shows average recorded investment and interest income recognized on impaired loans and leases, segregated by class.

	Three Months Ended June 30,								Six Months Ended June 30,
	2018				2017				2018				2017
(Dollars in thousands)	Average Recorded Investment		Interest Income		Average Recorded Investment		Interest Income		Average Recorded Investment		Interest Income		Average Recorded Investment		Interest Income
Commercial and agricultural	$	2,998	$	—	$	7,067	$	—	$	2,921	$	—	$	4,886	$	1
Auto and light truck	7,066		—		182		—		7,446		—		133		—
Medium and heavy duty truck	319		—		—		—		334		—		—		—
Aircraft	9,126		20		6,174		—		6,097		20		7,484		—
Construction equipment	942		—		1,143		—		1,136		—		1,152		—
Commercial real estate	2,259		—		2,720		—		2,978		—		3,312		—
Residential real estate and home equity	349		4		356		4		349		8		357		8
Consumer	—		—		—		—		—		—		—		—
Total	$	23,059	$	24	$	17,642	$	4	$	21,261	$	28	$	17,324	$	9

Schedule of recorded investment in loans and leases classified as troubled debt restructuring

The following table shows the recorded investment of loans and leases classified as troubled debt restructurings as of June 30, 2018 and December 31, 2017.

(Dollars in thousands)	June 30, 2018		December 31, 2017
Performing TDRs	$	348	$	352
Nonperforming TDRs	122		537
Total TDRs	$	470	$	889

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Reserve for Loan and Lease Losses (Tables)

6 Months Ended

Jun. 30, 2018

Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]

Schedule of changes in reserve for loan and lease losses, segregated by class

The following table shows the changes in the reserve for loan and lease losses, segregated by class, for the three months ended June 30, 2018 and 2017.

(Dollars in thousands)	Commercial and agricultural			Auto and light truck		Medium and heavy duty truck			Aircraft			Construction equipment			Commercial real estate			Residential real estate and home equity			Consumer		Total
June 30, 2018
Balance, beginning of period	$	17,609		$	10,810	$	4,493		$	34,836		$	10,917		$	14,770		$	3,565		$	1,331	$	98,331
Charge-offs	—			84		—			—			—			—			—			221		305
Recoveries	41			13		—			5			26			4			7			68		164
Net charge-offs (recoveries)	(41		)	71		—			(5		)	(26		)	(4		)	(7		)	153		141
Provision (recovery of provision)	981			1,337		(151		)	1,931			193			366			(8		)	168		4,817
Balance, end of period	$	18,631		$	12,076	$	4,342		$	36,772		$	11,136		$	15,140		$	3,564		$	1,346	$	103,007
June 30, 2017
Balance, beginning of period	$	15,989		$	9,772	$	4,676		$	32,008		$	8,932		$	13,868		$	3,592		$	1,281	$	90,118
Charge-offs	261			61		—			654			27			—			33			150		1,186
Recoveries	89			5		—			15			7			48			16			64		244
Net charge-offs (recoveries)	172			56		—			639			20			(48		)	17			86		942
Provision (recovery of provision)	382			1,727		164			453			337			(441		)	32			84		2,738
Balance, end of period	$	16,199		$	11,443	$	4,840		$	31,822		$	9,249		$	13,475		$	3,607		$	1,279	$	91,914

The following table shows the changes in the reserve for loan and lease losses, segregated by class, for the six months ended June 30, 2018 and 2017.

(Dollars in thousands)	Commercial and agricultural loans			Auto and light truck			Medium and heavy duty truck			Aircraft			Construction equipment			Commercial real estate			Residential real estate and home equity			Consumer loans		Total
June 30, 2018
Balance, beginning of period	$	16,228		$	10,103		$	4,844		$	34,619		$	9,343		$	14,792		$	3,666		$	1,288	$	94,883
Charge-offs	25			400			—			29			5			7			11			384		861
Recoveries	90			19			—			49			45			25			13			141		382
Net charge-offs (recoveries)	(65		)	381			—			(20		)	(40		)	(18		)	(2		)	243		479
Provision (recovery of provision)	2,338			2,354			(502		)	2,133			1,753			330			(104		)	301		8,603
Balance, end of period	$	18,631		$	12,076		$	4,342		$	36,772		$	11,136		$	15,140		$	3,564		$	1,346	$	103,007
June 30, 2017
Balance, beginning of period	$	14,668		$	8,064		$	4,740		$	34,352		$	8,207		$	13,677		$	3,550		$	1,285	$	88,543
Charge-offs	469			82			—			1,757			27			2			37			370		2,744
Recoveries	684			1,132			—			198			29			98			87			149		2,377
Net charge-offs (recoveries)	(215		)	(1,050		)	—			1,559			(2		)	(96		)	(50		)	221		367
Provision (recovery of provision)	1,316			2,329			100			(971		)	1,040			(298		)	7			215		3,738
Balance, end of period	$	16,199		$	11,443		$	4,840		$	31,822		$	9,249		$	13,475		$	3,607		$	1,279	$	91,914

The following table shows the reserve for loan and lease losses and recorded investment in loans and leases, segregated by class, separated between individually and collectively evaluated for impairment as of June 30, 2018 and December 31, 2017.

(Dollars in thousands)	Commercial and agricultural loans		Auto and light truck		Medium and heavy duty truck		Aircraft		Construction equipment		Commercial real estate		Residential real estate and home equity		Consumer loans		Total
June 30, 2018
Reserve for loan and lease losses
Ending balance, individually evaluated for impairment	$	—	$	9	$	—	$	2,758	$	182	$	172	$	130	$	—	$	3,251
Ending balance, collectively evaluated for impairment	18,631		12,067		4,342		34,014		10,954		14,968		3,434		1,346		99,756
Total reserve for loan and lease losses	$	18,631	$	12,076	$	4,342	$	36,772	$	11,136	$	15,140	$	3,564	$	1,346	$	103,007
Recorded investment in loans
Ending balance, individually evaluated for impairment	$	2,992	$	6,015	$	310	$	20,401	$	941	$	1,490	$	348	$	—	$	32,497
Ending balance, collectively evaluated for impairment	1,044,713		574,030		275,963		843,095		641,693		768,169		523,764		135,899		4,807,326
Total recorded investment in loans	$	1,047,705	$	580,045	$	276,273	$	863,496	$	642,634	$	769,659	$	524,112	$	135,899	$	4,839,823
December 31, 2017
Reserve for loan and lease losses
Ending balance, individually evaluated for impairment	$	—	$	243	$	—	$	—	$	108	$	181	$	134	$	—	$	666
Ending balance, collectively evaluated for impairment	16,228		9,860		4,844		34,619		9,235		14,611		3,532		1,288		94,217
Total reserve for loan and lease losses	$	16,228	$	10,103	$	4,844	$	34,619	$	9,343	$	14,792	$	3,666	$	1,288	$	94,883
Recorded investment in loans
Ending balance, individually evaluated for impairment	$	2,439	$	7,780	$	371	$	1,901	$	928	$	3,346	$	352	$	—	$	17,117
Ending balance, collectively evaluated for impairment	927,558		489,036		296,564		842,756		562,509		738,222		525,770		128,146		4,510,561
Total recorded investment in loans	$	929,997	$	496,816	$	296,935	$	844,657	$	563,437	$	741,568	$	526,122	$	128,146	$	4,527,678

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Mortgage Servicing Rights (Tables)

6 Months Ended

Jun. 30, 2018

Transfers and Servicing of Financial Assets [Abstract]

Schedule of changes in carrying value of mortgage servicing rights and associated valuation allowance

The following table shows changes in the carrying value of MSRs and the associated valuation allowance.

	Three Months Ended   June 30,						Six Months Ended   June 30,
(Dollars in thousands)	2018			2017			2018			2017
Mortgage servicing rights:
Balance at beginning of period	$	4,356		$	4,281		$	4,349		$	4,297
Additions	202			246			445			493
Amortization	(235		)	(288		)	(471		)	(551		)
Sales	—			—			—			—
Carrying value before valuation allowance at end of period	4,323			4,239			4,323			4,239
Valuation allowance:
Balance at beginning of period	—			—			—			—
Impairment recoveries	—			—			—			—
Balance at end of period	$	—		$	—		$	—		$	—
Net carrying value of mortgage servicing rights at end of period	$	4,323		$	4,239		$	4,323		$	4,239
Fair value of mortgage servicing rights at end of period	$	7,536		$	7,134		$	7,536		$	7,134

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Commitments and Financial Instruments with Off-Balance-Sheet Risk (Tables)

6 Months Ended

Jun. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of financial instruments whose contract amounts represent credit risk

The following table shows financial instruments whose contract amounts represent credit risk.

(Dollars in thousands)	June 30, 2018		December 31, 2017
Amounts of commitments:
Loan commitments to extend credit	$	1,022,077	$	1,030,334
Standby letters of credit	$	30,911	$	29,961
Commercial and similar letters of credit	$	2,113	$	1,837

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Derivative Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of amounts of non-hedging derivative financial instruments

The following table shows the amounts of non-hedging derivative financial instruments.

			Asset derivatives			Liability derivatives
(Dollars in thousands)	Notional or contractual amount		Statement of Financial Condition classification	Fair value		Statement of Financial Condition classification	Fair value
June 30, 2018
Interest rate swap contracts	$	789,268	Other assets	$	7,349	Other liabilities	$	7,480
Loan commitments	6,931		Mortgages held for sale	123		N/A	—
Forward contracts - mortgage loan	13,873		N/A	—		Mortgages held for sale	47
Total	$	810,072		$	7,472		$	7,527
December 31, 2017
Interest rate swap contracts	$	756,550	Other assets	$	5,167	Other liabilities	$	5,262
Loan commitments	8,504		Mortgages held for sale	66		N/A	—
Forward contracts - mortgage loan	19,390		N/A	—		Mortgages held for sale	10
Total	$	784,444		$	5,233		$	5,272

Schedule of amounts included in the consolidated statements of income for non-hedging derivative financial instruments

The following table shows the amounts included in the Statements of Income for non-hedging derivative financial instruments.

		Gain (loss)
		Three Months Ended   June 30,						Six Months Ended   June 30,
(Dollars in thousands)	Statement of Income classification	2018			2017			2018			2017
Interest rate swap contracts	Other expense	$	(35	)	$	—		$	(36	)	$	20
Interest rate swap contracts	Other income	246			92			579			211
Loan commitments	Mortgage banking	61			(18		)	57			37
Forward contracts - mortgage loan	Mortgage banking	(40		)	117			(37		)	(195		)
Total		$	232		$	191		$	563		$	73

Schedule of offsetting of financial assets and derivative assets

The following table shows the offsetting of financial assets and derivative assets.

							Gross Amounts Not Offset in the Statement of Financial Condition
(Dollars in thousands)	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Statement of Financial Condition		Net Amounts of Assets Presented in the Statement of Financial Condition		Financial Instruments		Cash Collateral Received		Net Amount
June 30, 2018
Interest rate swaps	$	7,355	$	6	$	7,349	$	—	$	—	$	7,349
December 31, 2017
Interest rate swaps	$	5,194	$	27	$	5,167	$	—	$	—	$	5,167

Schedule of offsetting of financial liabilities and derivative liabilities

The following table shows the offsetting of financial liabilities and derivative liabilities.

							Gross Amounts Not Offset in the Statement of Financial Condition
(Dollars in thousands)	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Statement of Financial Condition		Net Amounts of Liabilities Presented in the Statement of Financial Condition		Financial Instruments		Cash Collateral Pledged		Net Amount
June 30, 2018
Interest rate swaps	$	7,486	$	6	$	7,480	$	—	$	4,715	$	2,765
Repurchase agreements	106,861		—		106,861		106,861		—		—
Total	$	114,347	$	6	$	114,341	$	106,861	$	4,715	$	2,765
December 31, 2017
Interest rate swaps	$	5,289	$	27	$	5,262	$	—	$	2,705	$	2,557
Repurchase agreements	149,835		—		149,835		149,835		—		—
Total	$	155,124	$	27	$	155,097	$	149,835	$	2,705	$	2,557

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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Schedule of reconciliation of the number of shares used in the calculation of basic and diluted earnings per common share

The following table presents a reconciliation of the number of shares used in the calculation of basic and diluted earnings per common share.

	Three Months Ended   June 30,				Six Months Ended   June 30,
(Dollars in thousands - except per share amounts)	2018		2017		2018		2017
Distributed earnings allocated to common stock	$	6,225	$	4,923	$	11,929	$	9,586
Undistributed earnings allocated to common stock	15,591		11,618		28,869		23,040
Net earnings allocated to common stock	21,816		16,541		40,798		32,626
Net earnings allocated to participating securities	148		128		282		249
Net income allocated to common stock and participating securities	$	21,964	$	16,669	$	41,080	$	32,875
Weighted average shares outstanding for basic earnings per common share	25,958,128		25,927,032		25,954,278		25,915,280
Dilutive effect of stock compensation	—		—		—		—
Weighted average shares outstanding for diluted earnings per common share	25,958,128		25,927,032		25,954,278		25,915,280
Basic earnings per common share	$	0.84	$	0.64	$	1.57	$	1.26
Diluted earnings per common share	$	0.84	$	0.64	$	1.57	$	1.26

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Accumulated Other Comprehensive Income (Tables)

6 Months Ended

Jun. 30, 2018

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of reclassifications out of accumulated other comprehensive income

The following table presents reclassifications out of accumulated other comprehensive income (loss) related to unrealized gains and losses on available-for-sale securities.

	Three Months Ended   June 30,					Six Months Ended   June 30,						Affected Line Item in the Statements of Income
(Dollars in thousands)	2018		2017			2018			2017
Realized gains (losses) included in net income	$	—	$	465		$	(345	)	$	1,750		Gains (losses) on investment securities available-for-sale
	—		465			(345		)	1,750			Income before income taxes
Tax effect	—		(175		)	83			(657		)	Income tax expense
Net of tax	$	—	$	290		$	(262	)	$	1,093		Net income

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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2018

Fair value measurements

Schedule of differences between the fair value carrying amount of mortgages held for sale measured at fair value and the aggregate unpaid principal amount

The following table shows the differences between the fair value carrying amount of mortgages held for sale measured at fair value and the aggregate unpaid principal amount the Company is contractually entitled to receive at maturity.

(Dollars in thousands)	Fair value carrying amount		Aggregate unpaid principal		Excess of fair value carrying amount over (under) unpaid principal
June 30, 2018
Mortgages held for sale reported at fair value	$	8,235	$	8,051	$	184	(1)
December 31, 2017
Mortgages held for sale reported at fair value	$	13,123	$	12,967	$	156	(1)

(1) The excess of fair value carrying amount over (under) unpaid principal is included in mortgage banking income and includes changes in fair value at and subsequent to funding and gains and losses on the related loan commitment prior to funding.

Schedule of assets and liabilities measured at fair value on a recurring basis

The following table shows the balance of assets and liabilities measured at fair value on a recurring basis.

(Dollars in thousands)	Level 1		Level 2		Level 3		Total
June 30, 2018
Assets:
Investment securities available-for-sale:
U.S. Treasury and Federal agencies securities	$	33,671	$	490,463	$	—	$	524,134
U.S. States and political subdivisions securities	—		94,261		1,641		95,902
Mortgage-backed securities — Federal agencies	—		302,279		—		302,279
Corporate debt securities	—		45,327		—		45,327
Foreign government and other securities	—		—		707		707
Total debt securities available-for-sale	33,671		932,330		2,348		968,349
Mortgages held for sale	—		8,235		—		8,235
Accrued income and other assets (interest rate swap agreements)	—		7,349		—		7,349
Total	$	33,671	$	947,914	$	2,348	$	983,933
Liabilities:
Accrued expenses and other liabilities (interest rate swap agreements)	$	—	$	7,480	$	—	$	7,480
Total	$	—	$	7,480	$	—	$	7,480
December 31, 2017
Assets:
Investment securities available-for-sale:
U.S. Treasury and Federal agencies securities	$	27,971	$	440,148	$	—	$	468,119
U.S. States and political subdivisions securities	—		113,845		2,155		116,000
Mortgage-backed securities — Federal agencies	—		287,910		—		287,910
Corporate debt securities	—		31,294		—		31,294
Foreign government and other securities	—		—		710		710
Total debt securities available-for-sale	27,971		873,197		2,865		904,033
Mortgages held for sale	—		13,123		—		13,123
Accrued income and other assets (interest rate swap agreements)	—		5,167		—		5,167
Total	$	27,971	$	891,487	$	2,865	$	922,323
Liabilities:
Accrued expenses and other liabilities (interest rate swap agreements)	$	—	$	5,262	$	—	$	5,262
Total	$	—	$	5,262	$	—	$	5,262

Schedule of changes in investment securities available-for-sale Level 3 assets measured at fair value on a recurring basis

The following table shows changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the quarter ended June 30, 2018 and 2017.

(Dollars in thousands)	U.S. States and political subdivisions securities			Foreign government and other securities			Investment securities available-for-sale
Beginning balance April 1, 2018	$	2,155		$	708		$	2,863
Total gains or losses (realized/unrealized):
Included in earnings	—			—			—
Included in other comprehensive income	4			(1		)	3
Purchases	—			—			—
Issuances	—			—			—
Sales	—			—			—
Settlements	—			—			—
Maturities	(518		)	—			(518		)
Transfers into Level 3	—			—			—
Transfers out of Level 3	—			—			—
Ending balance June 30, 2018	$	1,641		$	707		$	2,348
Beginning balance April 1, 2017	$	2,018		$	804		$	2,822
Total gains or losses (realized/unrealized):
Included in earnings	—			—			—
Included in other comprehensive income	11			(2		)	9
Purchases	287			—			287
Issuances	—			—			—
Sales	—			—			—
Settlements	—			—			—
Maturities	(515		)	(500		)	(1,015		)
Transfers into Level 3	—			—			—
Transfers out of Level 3	—			—			—
Ending balance June 30, 2017	$	1,801		$	302		$	2,103

Schedule of carrying value of assets measured at fair value on a non-recurring basis

The following table shows the carrying value of assets measured at fair value on a non-recurring basis.

(Dollars in thousands)	Level 1		Level 2		Level 3		Total
June 30, 2018
Impaired loans - collateral based	$	—	$	—	$	17,602	$	17,602
Accrued income and other assets (partnership investments)	—		—		1,000		1,000
Accrued income and other assets (mortgage servicing rights)	—		—		4,323		4,323
Accrued income and other assets (repossessions)	—		—		9,389		9,389
Accrued income and other assets (other real estate)	—		—		133		133
Total	$	—	$	—	$	32,447	$	32,447
December 31, 2017
Impaired loans - collateral based	$	—	$	—	$	7,994	$	7,994
Accrued income and other assets (partnership investments)	—		—		1,000		1,000
Accrued income and other assets (mortgage servicing rights)	—		—		4,349		4,349
Accrued income and other assets (repossessions)	—		—		10,114		10,114
Accrued income and other assets (other real estate)	—		—		1,312		1,312
Total	$	—	$	—	$	24,769	$	24,769

Schedule of fair values of financial instruments

The following table shows the fair values of the Company’s financial instruments.

(Dollars in thousands)	Carrying or Contract Value		Fair Value		Level 1		Level 2		Level 3
June 30, 2018
Assets:
Cash and due from banks	$	71,102	$	71,102	$	71,102	$	—	$	—
Federal funds sold and interest bearing deposits with other banks	73,358		73,358		73,358		—		—
Investment securities, available-for-sale	968,349		968,349		33,671		932,330		2,348
Other investments	28,159		28,159		28,159		—		—
Mortgages held for sale	8,235		8,235		—		8,235		—
Loans and leases, net of reserve for loan and lease losses	4,736,816		4,690,436		—		—		4,690,436
Mortgage servicing rights	4,323		7,536		—		—		7,536
Interest rate swaps	7,349		7,349		—		7,349		—
Liabilities:
Deposits	$	5,108,439	$	5,095,168	$	3,601,586	$	1,493,582	$	—
Short-term borrowings	277,094		277,094		106,268		170,826		—
Long-term debt and mandatorily redeemable securities	71,194		68,373		—		68,373		—
Subordinated notes	58,764		48,956		—		48,956		—
Interest rate swaps	7,480		7,480		—		7,480		—
Off-balance-sheet instruments *	—		294		—		294		—
December 31, 2017
Assets:
Cash and due from banks	$	73,635	$	73,635	$	73,635	$	—	$	—
Federal funds sold and interest bearing deposits with other banks	4,398		4,398		4,398		—		—
Investment securities, available-for-sale	904,033		904,033		27,971		873,197		2,865
Other investments	25,953		25,953		25,953		—		—
Mortgages held for sale	13,123		13,123		—		13,123		—
Loans and leases, net of reserve for loan and lease losses	4,432,795		4,428,848		—		—		4,428,848
Mortgage servicing rights	4,349		7,187		—		—		7,187
Interest rate swaps	5,167		5,167		—		5,167		—
Liabilities:
Deposits	$	4,752,730	$	4,745,111	$	3,482,757	$	1,262,354	$	—
Short-term borrowings	214,595		214,595		206,862		7,733		—
Long-term debt and mandatorily redeemable securities	70,060		67,857		—		67,857		—
Subordinated notes	58,764		57,103		—		57,103		—
Interest rate swaps	5,262		5,262		—		5,262		—
Off-balance-sheet instruments *	—		286		—		286		—

* Represents estimated cash outflows required to currently settle the obligations at current market rates.

Recurring

Fair value measurements

Schedule of valuation methodology and unobservable inputs for Level 3 assets and liabilities measured at fair value on a recurring and non-recurring basis

The following table shows the valuation methodology and unobservable inputs for Level 3 assets and liabilities measured at fair value on a recurring basis.

(Dollars in thousands)	Fair Value		Valuation Methodology	Unobservable Inputs	Range of Inputs
June 30, 2018
Debt securities available-for sale
Direct placement municipal securities	$	1,641	Discounted cash flows	Credit spread assumption	0.11% - 3.02%
Foreign government	$	707	Discounted cash flows	Market yield assumption	0.00% - 1.21%
December 31, 2017
Debt securities available-for sale
Direct placement municipal securities	$	2,155	Discounted cash flows	Credit spread assumption	2.21% - 2.93%
Foreign government	$	710	Discounted cash flows	Market yield assumption	0.35% - 1.23%

Non-recurring

Fair value measurements

Schedule of valuation methodology and unobservable inputs for Level 3 assets and liabilities measured at fair value on a recurring and non-recurring basis

The following table below shows the valuation methodology and unobservable inputs for Level 3 assets and liabilities measured at fair value on a non-recurring basis.

(Dollars in thousands)	Carrying Value		Fair Value		Valuation Methodology	Unobservable Inputs	Range of Inputs
June 30, 2018
Impaired loans	$	17,602	$	17,602	Collateral based measurements including appraisals, trade publications, and auction values	Discount for lack of marketability and current conditions	10% -30%
Mortgage servicing rights	4,323		7,536		Discounted cash flows	Constant prepayment rate (CPR)	7.1% - 22.5%
						Discount rate	10.1% - 13.0%
Repossessions	9,389		9,875		Appraisals, trade publications and auction values	Discount for lack of marketability	4% - 10%
Other real estate	133		176		Appraisals	Discount for lack of marketability	8% - 61%
December 31, 2017
Impaired loans	$	7,994	$	7,994	Collateral based measurements including appraisals, trade publications, and auction values	Discount for lack of marketability and current conditions	3% - 20%
Mortgage servicing rights	4,349		7,187		Discounted cash flows	Constant prepayment rate (CPR)	8.6% - 20.7%
						Discount rate	9.6% - 12.5%
Repossessions	10,114		10,493		Appraisals, trade publications and auction values	Discount for lack of marketability	3% - 10%
Other real estate	1,312		1,441		Appraisals	Discount for lack of marketability	7% - 9%

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Accounting Policies Accounting Policies (Details) - Minimum	6 Months Ended
	Jun. 30, 2018 USD ($)
Summary of Significant Accounting Policies [Line Items]
Period of sustained performance required to change from non-performing to performing status	6 months
Amount necessary for impairment evaluation	$ 100,000

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Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Item Effected [Line Items]
Retained earnings	$ (370,521)	$ (339,959)
Assets	6,320,058	5,887,284
Liabilities and shareholders' equity	6,320,058	$ 5,887,284
Accounting Standards Update 2017-08
Item Effected [Line Items]
Retained earnings	300
Minimum | Accounting Standards Update 2016-02
Item Effected [Line Items]
Assets	10,000
Liabilities and shareholders' equity	10,000
Maximum | Accounting Standards Update 2016-02
Item Effected [Line Items]
Assets	20,000
Liabilities and shareholders' equity	20,000
Accounting Standards Update 2018-02
Item Effected [Line Items]
Reclassification of tax effects related to the Tax Cuts and Jobs Act	$ 720

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Investment Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Contractual maturities of investments in debt securities available-for-sale, Amortized Cost
Due in one year or less	$ 59,675
Due after one year through five years	598,258
Due after five years through ten years	18,332
Due after ten years	0
Mortgage-backed securities	308,437
Total debt securities available-for-sale	984,702	$ 909,368
Contractual maturities of investments in debt securities available-for-sale, Fair Value
Due in one year or less	59,618
Due after one year through five years	588,454
Due after five years through ten years	17,998
Due after ten years	0
Mortgage-backed securities	302,279
Total debt securities available-for-sale	968,349	904,033
U.S. Treasury and Federal agencies securities
Contractual maturities of investments in debt securities available-for-sale, Amortized Cost
Total debt securities available-for-sale	533,030	471,508
Contractual maturities of investments in debt securities available-for-sale, Fair Value
Total debt securities available-for-sale	524,134	468,119
U.S. States and political subdivisions securities
Contractual maturities of investments in debt securities available-for-sale, Amortized Cost
Total debt securities available-for-sale	96,653	116,260
Contractual maturities of investments in debt securities available-for-sale, Fair Value
Total debt securities available-for-sale	95,902	116,000
Mortgage-backed securities - Federal agencies
Contractual maturities of investments in debt securities available-for-sale, Amortized Cost
Total debt securities available-for-sale	308,437	289,327
Contractual maturities of investments in debt securities available-for-sale, Fair Value
Total debt securities available-for-sale	302,279	287,910
Corporate debt securities
Contractual maturities of investments in debt securities available-for-sale, Amortized Cost
Total debt securities available-for-sale	45,882	31,573
Contractual maturities of investments in debt securities available-for-sale, Fair Value
Total debt securities available-for-sale	45,327	31,294
Foreign government and other securities
Contractual maturities of investments in debt securities available-for-sale, Amortized Cost
Total debt securities available-for-sale	700	700
Contractual maturities of investments in debt securities available-for-sale, Fair Value
Total debt securities available-for-sale	$ 707	$ 710

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Investment Securities (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Schedule Of Available For Sale Debt Securities [Line Items]
Total debt securities available-for-sale	$ 984,702		$ 984,702		$ 909,368
Gross Unrealized Gains	1,099		1,099		2,176
Gross Unrealized Losses	(17,452)		(17,452)		(7,511)
Investment securities available-for-sale	968,349		968,349		904,033
Fair Value
Less than 12 Months	668,443		668,443		497,752
12 months or Longer	199,564		199,564		184,736
Total fair value	868,007		868,007		682,488
Unrealized Losses
Less than 12 Months	(9,656)		(9,656)		(2,841)
12 months or Longer	(7,796)		(7,796)		(4,670)
Total unrealized losses	(17,452)		(17,452)		(7,511)
Gross realized gains and losses
Gross realized gains	0		2
Gross realized gains (including equity securities)		$ 655		$ 1,940
Gross realized losses	0		(347)
Gross realized losses (including equity securities)		0		0
OTTI losses	0		0
OTTI losses (including equity securities)		(190)		(190)
Net realized gains (losses)	0		(345)
Net realized gains (losses) (including equity securities)		$ 465		$ 1,750
Investment securities pledged as collateral	245,400		245,400		289,050
U.S. Treasury and Federal agencies securities
Schedule Of Available For Sale Debt Securities [Line Items]
Total debt securities available-for-sale	533,030		533,030		471,508
Gross Unrealized Gains	3		3		57
Gross Unrealized Losses	(8,899)		(8,899)		(3,446)
Investment securities available-for-sale	524,134		524,134		468,119
Fair Value
Less than 12 Months	414,870		414,870		311,865
12 months or Longer	88,331		88,331		89,617
Total fair value	503,201		503,201		401,482
Unrealized Losses
Less than 12 Months	(5,481)		(5,481)		(1,161)
12 months or Longer	(3,418)		(3,418)		(2,285)
Total unrealized losses	(8,899)		(8,899)		(3,446)
U.S. States and political subdivisions securities
Schedule Of Available For Sale Debt Securities [Line Items]
Total debt securities available-for-sale	96,653		96,653		116,260
Gross Unrealized Gains	258		258		648
Gross Unrealized Losses	(1,009)		(1,009)		(908)
Investment securities available-for-sale	95,902		95,902		116,000
Fair Value
Less than 12 Months	42,123		42,123		34,971
12 months or Longer	17,498		17,498		24,909
Total fair value	59,621		59,621		59,880
Unrealized Losses
Less than 12 Months	(421)		(421)		(287)
12 months or Longer	(588)		(588)		(621)
Total unrealized losses	(1,009)		(1,009)		(908)
Mortgage-backed securities - Federal agencies
Schedule Of Available For Sale Debt Securities [Line Items]
Total debt securities available-for-sale	308,437		308,437		289,327
Gross Unrealized Gains	831		831		1,456
Gross Unrealized Losses	(6,989)		(6,989)		(2,873)
Investment securities available-for-sale	302,279		302,279		287,910
Fair Value
Less than 12 Months	176,014		176,014		137,169
12 months or Longer	83,844		83,844		60,162
Total fair value	259,858		259,858		197,331
Unrealized Losses
Less than 12 Months	(3,540)		(3,540)		(1,336)
12 months or Longer	(3,449)		(3,449)		(1,537)
Total unrealized losses	(6,989)		(6,989)		(2,873)
Corporate debt securities
Schedule Of Available For Sale Debt Securities [Line Items]
Total debt securities available-for-sale	45,882		45,882		31,573
Gross Unrealized Gains	0		0		5
Gross Unrealized Losses	(555)		(555)		(284)
Investment securities available-for-sale	45,327		45,327		31,294
Fair Value
Less than 12 Months	35,436		35,436		13,747
12 months or Longer	9,891		9,891		10,048
Total fair value	45,327		45,327		23,795
Unrealized Losses
Less than 12 Months	(214)		(214)		(57)
12 months or Longer	(341)		(341)		(227)
Total unrealized losses	(555)		(555)		(284)
Foreign government and other securities
Schedule Of Available For Sale Debt Securities [Line Items]
Total debt securities available-for-sale	700		700		700
Gross Unrealized Gains	7		7		10
Gross Unrealized Losses	0		0		0
Investment securities available-for-sale	707		707		710
Fair Value
Less than 12 Months	0		0		0
12 months or Longer	0		0		0
Total fair value	0		0		0
Unrealized Losses
Less than 12 Months	0		0		0
12 months or Longer	0		0		0
Total unrealized losses	$ 0		$ 0		$ 0

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Loan and Lease Financings (Details)	6 Months Ended
	Jun. 30, 2018 USD ($) item	Dec. 31, 2017 USD ($)
Receivables [Abstract]
Number of methods to assess credit risk | item	2
Loan and Lease Financings
Recorded investment in loans and leases	$ 4,839,823,000	$ 4,527,678,000
Loan and lease financings excluding residential real estate and consumer loans
Loan and Lease Financings
Recorded investment in loans and leases	4,179,812,000	3,873,410,000
Commercial and agricultural
Loan and Lease Financings
Recorded investment in loans and leases	1,047,705,000	929,997,000
Auto and light truck
Loan and Lease Financings
Recorded investment in loans and leases	580,045,000	496,816,000
Medium and heavy duty truck
Loan and Lease Financings
Recorded investment in loans and leases	276,273,000	296,935,000
Aircraft
Loan and Lease Financings
Recorded investment in loans and leases	863,496,000	844,657,000
Construction equipment
Loan and Lease Financings
Recorded investment in loans and leases	642,634,000	563,437,000
Commercial real estate
Loan and Lease Financings
Recorded investment in loans and leases	769,659,000	741,568,000
Credit Quality Grades 1-6 | Loan and lease financings excluding residential real estate and consumer loans
Loan and Lease Financings
Recorded investment in loans and leases	4,040,629,000	3,776,621,000
Credit Quality Grades 1-6 | Commercial and agricultural
Loan and Lease Financings
Recorded investment in loans and leases	1,014,535,000	906,074,000
Credit Quality Grades 1-6 | Auto and light truck
Loan and Lease Financings
Recorded investment in loans and leases	559,686,000	482,455,000
Credit Quality Grades 1-6 | Medium and heavy duty truck
Loan and Lease Financings
Recorded investment in loans and leases	274,035,000	293,318,000
Credit Quality Grades 1-6 | Aircraft
Loan and Lease Financings
Recorded investment in loans and leases	812,726,000	815,956,000
Credit Quality Grades 1-6 | Construction equipment
Loan and Lease Financings
Recorded investment in loans and leases	624,034,000	552,684,000
Credit Quality Grades 1-6 | Commercial real estate
Loan and Lease Financings
Recorded investment in loans and leases	755,613,000	726,134,000
Credit Quality Grades 7-12
Loan and Lease Financings
Relationships reviewed quarterly as part of management's evaluation of the appropriateness of the reserve for loan and lease losses	100,000
Credit Quality Grades 7-12 | Loan and lease financings excluding residential real estate and consumer loans
Loan and Lease Financings
Recorded investment in loans and leases	139,183,000	96,789,000
Credit Quality Grades 7-12 | Commercial and agricultural
Loan and Lease Financings
Recorded investment in loans and leases	33,170,000	23,923,000
Credit Quality Grades 7-12 | Auto and light truck
Loan and Lease Financings
Recorded investment in loans and leases	20,359,000	14,361,000
Credit Quality Grades 7-12 | Medium and heavy duty truck
Loan and Lease Financings
Recorded investment in loans and leases	2,238,000	3,617,000
Credit Quality Grades 7-12 | Aircraft
Loan and Lease Financings
Recorded investment in loans and leases	50,770,000	28,701,000
Credit Quality Grades 7-12 | Construction equipment
Loan and Lease Financings
Recorded investment in loans and leases	18,600,000	10,753,000
Credit Quality Grades 7-12 | Commercial real estate
Loan and Lease Financings
Recorded investment in loans and leases	$ 14,046,000	$ 15,434,000

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Loan and Lease Financings (Details 2) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Loan and Lease Financings
Recorded investment in loans and leases	$ 4,839,823	$ 4,527,678
Residential real estate and home equity and consumer loans
Loan and Lease Financings
Recorded investment in loans and leases	660,011	654,268
Residential real estate and home equity
Loan and Lease Financings
Recorded investment in loans and leases	524,112	526,122
Consumer
Loan and Lease Financings
Recorded investment in loans and leases	135,899	128,146
Performing | Residential real estate and home equity and consumer loans
Loan and Lease Financings
Recorded investment in loans and leases	657,865	651,785
Performing | Residential real estate and home equity
Loan and Lease Financings
Recorded investment in loans and leases	522,166	523,803
Performing | Consumer
Loan and Lease Financings
Recorded investment in loans and leases	$ 135,699	127,982
Nonperforming
Loan and Lease Financings
Classification of nonperforming loans, threshold period past due	90 days
Nonperforming | Residential real estate and home equity and consumer loans
Loan and Lease Financings
Recorded investment in loans and leases	$ 2,146	2,483
Nonperforming | Residential real estate and home equity
Loan and Lease Financings
Recorded investment in loans and leases	1,946	2,319
Nonperforming | Consumer
Loan and Lease Financings
Recorded investment in loans and leases	$ 200	$ 164

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Loan and Lease Financings (Details 3) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	$ 4,778,845	$ 4,481,921
90 Days or More Past Due and Accruing	263	459
Total Accruing Loans	4,805,241	4,508,273
Nonaccrual	34,582	19,405
Total loans and leases	4,839,823	4,527,678
30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	20,253	20,360
60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	5,880	5,533
Commercial and agricultural
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	1,044,377	927,113
Total Accruing Loans	1,044,479	927,394
Nonaccrual	3,226	2,603
Total loans and leases	1,047,705	929,997
Commercial and agricultural | 30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	77	281
Commercial and agricultural | 60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	25	0
Auto and light truck
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	571,355	485,885
Total Accruing Loans	573,909	488,775
Nonaccrual	6,136	8,041
Total loans and leases	580,045	496,816
Auto and light truck | 30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	2,298	2,869
Auto and light truck | 60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	256	21
Medium and heavy duty truck
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	275,945	296,564
Total Accruing Loans	275,962	296,564
Nonaccrual	311	371
Total loans and leases	276,273	296,935
Medium and heavy duty truck | 30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	17	0
Medium and heavy duty truck | 60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	0	0
Aircraft
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	830,633	823,638
Total Accruing Loans	843,070	842,700
Nonaccrual	20,426	1,957
Total loans and leases	863,496	844,657
Aircraft | 30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	12,437	14,570
Aircraft | 60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	0	4,492
Construction equipment
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	632,274	561,665
Total Accruing Loans	641,598	562,446
Nonaccrual	1,036	991
Total loans and leases	642,634	563,437
Construction equipment | 30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	4,290	333
Construction equipment | 60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	5,034	448
Commercial real estate
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	767,852	738,006
Total Accruing Loans	768,095	738,150
Nonaccrual	1,564	3,418
Total loans and leases	769,659	741,568
Commercial real estate | 30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	178	23
Commercial real estate | 60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	65	121
Residential real estate and home equity
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	521,540	521,943
90 Days or More Past Due and Accruing	188	429
Total Accruing Loans	522,354	524,232
Nonaccrual	1,758	1,890
Total loans and leases	524,112	526,122
Residential real estate and home equity | 30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	413	1,508
Residential real estate and home equity | 60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	213	352
Consumer
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Current	134,869	127,107
90 Days or More Past Due and Accruing	75	30
Total Accruing Loans	135,774	128,012
Nonaccrual	125	134
Total loans and leases	135,899	128,146
Consumer | 30 to 59 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	543	776
Consumer | 60 to 89 Days Past Due
Recorded investment of loans and leases, segregated by class, with delinquency aging and nonaccrual status
Past Due	$ 287	$ 99

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Loan and Lease Financings (Details 4) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Impaired loans and leases
Recorded Investment, With no related allowance recorded	$ 10,910		$ 10,910		$ 7,670
Unpaid Principal Balance, With no related allowance recorded	10,910		10,910		7,670
Recorded Investment, With an allowance recorded	21,587		21,587		9,447
Unpaid Principal Balance, With an allowance recorded	21,589		21,589		9,449
Total Recorded Investment	32,497		32,497		17,117
Total Unpaid Principal Balance	32,499		32,499		17,119
Total Related Allowance	3,251		3,251		666
Average Recorded Investment	23,059	$ 17,642	21,261	$ 17,324
Interest Income	24	4	28	9
Commercial and agricultural
Impaired loans and leases
Recorded Investment, With no related allowance recorded	2,992		2,992		2,439
Unpaid Principal Balance, With no related allowance recorded	2,992		2,992		2,439
Recorded Investment, With an allowance recorded	0		0		0
Unpaid Principal Balance, With an allowance recorded	0		0		0
Total Related Allowance	0		0		0
Average Recorded Investment	2,998	7,067	2,921	4,886
Interest Income	0	0	0	1
Auto and light truck
Impaired loans and leases
Recorded Investment, With no related allowance recorded	5,789		5,789		0
Unpaid Principal Balance, With no related allowance recorded	5,789		5,789		0
Recorded Investment, With an allowance recorded	226		226		7,780
Unpaid Principal Balance, With an allowance recorded	226		226		7,780
Total Related Allowance	9		9		243
Average Recorded Investment	7,066	182	7,446	133
Interest Income	0	0	0	0
Medium and heavy duty truck
Impaired loans and leases
Recorded Investment, With no related allowance recorded	310		310		371
Unpaid Principal Balance, With no related allowance recorded	310		310		371
Recorded Investment, With an allowance recorded	0		0		0
Unpaid Principal Balance, With an allowance recorded	0		0		0
Total Related Allowance	0		0		0
Average Recorded Investment	319	0	334	0
Interest Income	0	0	0	0
Aircraft
Impaired loans and leases
Recorded Investment, With no related allowance recorded	1,237		1,237		1,901
Unpaid Principal Balance, With no related allowance recorded	1,237		1,237		1,901
Recorded Investment, With an allowance recorded	19,164		19,164		0
Unpaid Principal Balance, With an allowance recorded	19,164		19,164		0
Total Related Allowance	2,758		2,758		0
Average Recorded Investment	9,126	6,174	6,097	7,484
Interest Income	20	0	20	0
Construction equipment
Impaired loans and leases
Recorded Investment, With no related allowance recorded	0		0		584
Unpaid Principal Balance, With no related allowance recorded	0		0		584
Recorded Investment, With an allowance recorded	941		941		344
Unpaid Principal Balance, With an allowance recorded	941		941		344
Total Related Allowance	182		182		108
Average Recorded Investment	942	1,143	1,136	1,152
Interest Income	0	0	0	0
Commercial real estate
Impaired loans and leases
Recorded Investment, With no related allowance recorded	582		582		2,375
Unpaid Principal Balance, With no related allowance recorded	582		582		2,375
Recorded Investment, With an allowance recorded	908		908		971
Unpaid Principal Balance, With an allowance recorded	908		908		971
Total Related Allowance	172		172		181
Average Recorded Investment	2,259	2,720	2,978	3,312
Interest Income	0	0	0	0
Residential real estate and home equity
Impaired loans and leases
Recorded Investment, With no related allowance recorded	0		0		0
Unpaid Principal Balance, With no related allowance recorded	0		0		0
Recorded Investment, With an allowance recorded	348		348		352
Unpaid Principal Balance, With an allowance recorded	350		350		354
Total Related Allowance	130		130		134
Average Recorded Investment	349	356	349	357
Interest Income	4	4	8	8
Consumer
Impaired loans and leases
Recorded Investment, With no related allowance recorded	0		0		0
Unpaid Principal Balance, With no related allowance recorded	0		0		0
Recorded Investment, With an allowance recorded	0		0		0
Unpaid Principal Balance, With an allowance recorded	0		0		0
Total Related Allowance	0		0		$ 0
Average Recorded Investment	0	0	0	0
Interest Income	$ 0	$ 0	$ 0	$ 0

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Loan and Lease Financings (Details 5) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($) item	Jun. 30, 2017 item	Jun. 30, 2018 USD ($) item	Jun. 30, 2017 item	Dec. 31, 2017 USD ($)
Loans and leases classified as TDR
Number of Modifications | item	0	1	0	1
Number of Defaults | item	0	1	0	1
Loans and leases classified as troubled debt restructuring | $	$ 470		$ 470		$ 889
Troubled debt restructured loans and leases which had payment defaults within twelve months following modification
Default threshold			90 days
Performing
Loans and leases classified as TDR
Loans and leases classified as troubled debt restructuring | $	348		$ 348		352
Nonperforming
Loans and leases classified as TDR
Loans and leases classified as troubled debt restructuring | $	$ 122		$ 122		$ 537
Interest Rate Below Market Reduction [Member]
Loans and leases classified as TDR
Number of Modifications | item	0	1	0	1

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Reserve for Loan and Lease Losses (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) item	Dec. 31, 2017 USD ($)
Reserve for loan and lease losses
Number of classes existing in loan and lease portfolio | item					8
Changes in reserve for loan and lease losses
Balance at the beginning of the period	$ 98,331	$ 90,118	$ 94,883	$ 88,543
Charge-offs	305	1,186	861	2,744
Recoveries	164	244	382	2,377
Net charge-offs (recoveries)	141	942	479	367
Provision (recovery of provision)	4,817	2,738	8,603	3,738
Balance at the end of the period	103,007	91,914	103,007	91,914
Reserve for loan and lease losses
Ending balance, individually evaluated for impairment					$ 3,251	$ 666
Ending balance, collectively evaluated for impairment					99,756	94,217
Total reserve for loan and lease losses	98,331	90,118	94,883	88,543	103,007	94,883
Recorded investment in loans
Ending balance, individually evaluated for impairment					32,497	17,117
Ending balance, collectively evaluated for impairment					4,807,326	4,510,561
Total loans and leases					4,839,823	4,527,678
Commercial and agricultural
Changes in reserve for loan and lease losses
Balance at the beginning of the period	17,609	15,989	16,228	14,668
Charge-offs	0	261	25	469
Recoveries	41	89	90	684
Net charge-offs (recoveries)	(41)	172	(65)	(215)
Provision (recovery of provision)	981	382	2,338	1,316
Balance at the end of the period	18,631	16,199	18,631	16,199
Reserve for loan and lease losses
Ending balance, individually evaluated for impairment					0	0
Ending balance, collectively evaluated for impairment					18,631	16,228
Total reserve for loan and lease losses	17,609	15,989	16,228	14,668	18,631	16,228
Recorded investment in loans
Ending balance, individually evaluated for impairment					2,992	2,439
Ending balance, collectively evaluated for impairment					1,044,713	927,558
Total loans and leases					1,047,705	929,997
Auto and light truck
Changes in reserve for loan and lease losses
Balance at the beginning of the period	10,810	9,772	10,103	8,064
Charge-offs	84	61	400	82
Recoveries	13	5	19	1,132
Net charge-offs (recoveries)	71	56	381	(1,050)
Provision (recovery of provision)	1,337	1,727	2,354	2,329
Balance at the end of the period	12,076	11,443	12,076	11,443
Reserve for loan and lease losses
Ending balance, individually evaluated for impairment					9	243
Ending balance, collectively evaluated for impairment					12,067	9,860
Total reserve for loan and lease losses	10,810	9,772	10,103	8,064	12,076	10,103
Recorded investment in loans
Ending balance, individually evaluated for impairment					6,015	7,780
Ending balance, collectively evaluated for impairment					574,030	489,036
Total loans and leases					580,045	496,816
Medium and heavy duty truck
Changes in reserve for loan and lease losses
Balance at the beginning of the period	4,493	4,676	4,844	4,740
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net charge-offs (recoveries)	0	0	0	0
Provision (recovery of provision)	(151)	164	(502)	100
Balance at the end of the period	4,342	4,840	4,342	4,840
Reserve for loan and lease losses
Ending balance, individually evaluated for impairment					0	0
Ending balance, collectively evaluated for impairment					4,342	4,844
Total reserve for loan and lease losses	4,493	4,676	4,844	4,740	4,342	4,844
Recorded investment in loans
Ending balance, individually evaluated for impairment					310	371
Ending balance, collectively evaluated for impairment					275,963	296,564
Total loans and leases					276,273	296,935
Aircraft
Changes in reserve for loan and lease losses
Balance at the beginning of the period	34,836	32,008	34,619	34,352
Charge-offs	0	654	29	1,757
Recoveries	5	15	49	198
Net charge-offs (recoveries)	(5)	639	(20)	1,559
Provision (recovery of provision)	1,931	453	2,133	(971)
Balance at the end of the period	36,772	31,822	36,772	31,822
Reserve for loan and lease losses
Ending balance, individually evaluated for impairment					2,758	0
Ending balance, collectively evaluated for impairment					34,014	34,619
Total reserve for loan and lease losses	34,836	32,008	34,619	34,352	36,772	34,619
Recorded investment in loans
Ending balance, individually evaluated for impairment					20,401	1,901
Ending balance, collectively evaluated for impairment					843,095	842,756
Total loans and leases					863,496	844,657
Construction equipment
Changes in reserve for loan and lease losses
Balance at the beginning of the period	10,917	8,932	9,343	8,207
Charge-offs	0	27	5	27
Recoveries	26	7	45	29
Net charge-offs (recoveries)	(26)	20	(40)	(2)
Provision (recovery of provision)	193	337	1,753	1,040
Balance at the end of the period	11,136	9,249	11,136	9,249
Reserve for loan and lease losses
Ending balance, individually evaluated for impairment					182	108
Ending balance, collectively evaluated for impairment					10,954	9,235
Total reserve for loan and lease losses	10,917	8,932	9,343	8,207	11,136	9,343
Recorded investment in loans
Ending balance, individually evaluated for impairment					941	928
Ending balance, collectively evaluated for impairment					641,693	562,509
Total loans and leases					642,634	563,437
Commercial real estate
Changes in reserve for loan and lease losses
Balance at the beginning of the period	14,770	13,868	14,792	13,677
Charge-offs	0	0	7	2
Recoveries	4	48	25	98
Net charge-offs (recoveries)	(4)	(48)	(18)	(96)
Provision (recovery of provision)	366	(441)	330	(298)
Balance at the end of the period	15,140	13,475	15,140	13,475
Reserve for loan and lease losses
Ending balance, individually evaluated for impairment					172	181
Ending balance, collectively evaluated for impairment					14,968	14,611
Total reserve for loan and lease losses	14,770	13,868	14,792	13,677	15,140	14,792
Recorded investment in loans
Ending balance, individually evaluated for impairment					1,490	3,346
Ending balance, collectively evaluated for impairment					768,169	738,222
Total loans and leases					769,659	741,568
Residential real estate and home equity
Changes in reserve for loan and lease losses
Balance at the beginning of the period	3,565	3,592	3,666	3,550
Charge-offs	0	33	11	37
Recoveries	7	16	13	87
Net charge-offs (recoveries)	(7)	17	(2)	(50)
Provision (recovery of provision)	(8)	32	(104)	7
Balance at the end of the period	3,564	3,607	3,564	3,607
Reserve for loan and lease losses
Ending balance, individually evaluated for impairment					130	134
Ending balance, collectively evaluated for impairment					3,434	3,532
Total reserve for loan and lease losses	3,565	3,592	3,666	3,550	3,564	3,666
Recorded investment in loans
Ending balance, individually evaluated for impairment					348	352
Ending balance, collectively evaluated for impairment					523,764	525,770
Total loans and leases					524,112	526,122
Consumer
Changes in reserve for loan and lease losses
Balance at the beginning of the period	1,331	1,281	1,288	1,285
Charge-offs	221	150	384	370
Recoveries	68	64	141	149
Net charge-offs (recoveries)	153	86	243	221
Provision (recovery of provision)	168	84	301	215
Balance at the end of the period	1,346	1,279	1,346	1,279
Reserve for loan and lease losses
Ending balance, individually evaluated for impairment					0	0
Ending balance, collectively evaluated for impairment					1,346	1,288
Total reserve for loan and lease losses	$ 1,331	$ 1,281	$ 1,288	$ 1,285	1,346	1,288
Recorded investment in loans
Ending balance, individually evaluated for impairment					0	0
Ending balance, collectively evaluated for impairment					135,899	128,146
Total loans and leases					$ 135,899	$ 128,146

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Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Residential mortgage loans
Mortgage Servicing Rights
Unpaid principal balance	$ 744,400	$ 752,990

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Mortgage Servicing Rights (Details 2) - Residential mortgage loans - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Changes in mortgage servicing assets
Balance at the beginning of the period	$ 4,356	$ 4,281	$ 4,349	$ 4,297
Additions	202	246	445	493
Amortization	(235)	(288)	(471)	(551)
Sales	0	0	0	0
Carrying value before valuation allowance at end of period	4,323	4,239	4,323	4,239
Changes in valuation allowance
Balance at the beginning of the period	0	0	0	0
Impairment recoveries	0	0	0	0
Balance at the end of the period	0	0	0	0
Net carrying value of mortgage servicing rights at end of period	4,323	4,239	4,323	4,239
Fair value of mortgage servicing rights at end of period	7,536	7,134	7,536	7,134
Fair value of mortgage servicing rights exceeding the carrying value	3,210	2,900	3,210	2,900
Mortgage loan contractual servicing fees, including late fees and ancillary income	$ 640	$ 690	$ 1,300	$ 1,370

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Commitments and Financial Instruments with Off-Balance-Sheet Risk (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Loan commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance-sheet instruments	$ 1,022,077	$ 1,030,334
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance-sheet instruments	$ 30,911	29,961
Standby letters of credit | Minimum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Letter of credit term	6 months
Standby letters of credit | Maximum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Letter of credit term	1 year
Commercial and similar letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance-sheet instruments	$ 2,113	$ 1,837
Commercial and similar letters of credit | Minimum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Letter of credit term	3 months
Commercial and similar letters of credit | Maximum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Letter of credit term	6 months

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Commitments and Financial Instruments with Off-Balance-Sheet Risk (Details 2) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Investments in tax-advantaged and other operating partnerships	$ 14,540	$ 23,760
Tax-advantaged and other operating partnerships commitment	$ 14,130	$ 15,710

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Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Non-hedging derivative financial instruments
Derivative Financial Instruments
Notional or contractual amount	$ 810,072	$ 784,444
Asset derivatives, Fair value	7,472	5,233
Liability derivatives, Fair value	7,527	5,272
Interest rate swap contracts
Derivative Financial Instruments
Asset derivatives, Fair value	7,355	5,194
Interest rate swap contracts | Non-hedging derivative financial instruments
Derivative Financial Instruments
Notional or contractual amount	789,268	756,550
Asset derivatives, Fair value	7,349	5,167
Liability derivatives, Fair value	7,480	5,262
Loan commitments | Non-hedging derivative financial instruments
Derivative Financial Instruments
Notional or contractual amount	6,931	8,504
Asset derivatives, Fair value	123	66
Liability derivatives, Fair value	0	0
Forward contracts - mortgage loan | Non-hedging derivative financial instruments
Derivative Financial Instruments
Notional or contractual amount	13,873	19,390
Asset derivatives, Fair value	0	0
Liability derivatives, Fair value	$ 47	$ 10

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Derivative Financial Instruments (Details 2) - Non-hedging derivative financial instruments - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivative Financial Instruments
Gain (loss)	$ 232	$ 191	$ 563	$ 73
Interest rate swap contracts | Other expense
Derivative Financial Instruments
Gain (loss)	(35)	0	(36)	20
Interest rate swap contracts | Other income
Derivative Financial Instruments
Gain (loss)	246	92	579	211
Loan commitments | Mortgage banking income
Derivative Financial Instruments
Gain (loss)	61	(18)	57	37
Forward contracts - mortgage loan | Mortgage banking income
Derivative Financial Instruments
Gain (loss)	$ (40)	$ 117	$ (37)	$ (195)

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Derivative Financial Instruments (Details 3) - Interest rate swaps - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Offsetting of financial assets and derivative assets
Gross Amounts of Recognized Assets	$ 7,355	$ 5,194
Gross Amounts Offset in the Statement of Financial Position	6	27
Net Amounts of Assets Presented in the Statement of Financial Position	7,349	5,167
Net Amount	$ 7,349	$ 5,167

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Derivative Financial Instruments (Details 4) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Offsetting of financial liabilities and derivative liabilities
Gross Amounts of Recognized Liabilities	$ 114,347	$ 155,124
Gross Amounts Offset in the Statement of Financial Position	6	27
Net Amounts of Liabilities Presented in the Statement of Financial Position	114,341	155,097
Gross amounts Not Offset in the Statement of Financial Position
Financial Instruments	106,861	149,835
Cash Collateral Pledged	4,715	2,705
Net Amount	2,765	2,557
Interest rate swaps
Offsetting of financial liabilities and derivative liabilities
Gross Amounts of Recognized Liabilities	7,486	5,289
Gross Amounts Offset in the Statement of Financial Position	6	27
Net Amounts of Liabilities Presented in the Statement of Financial Position	7,480	5,262
Gross amounts Not Offset in the Statement of Financial Position
Cash Collateral Pledged	4,715	2,705
Net Amount	2,765	2,557
Repurchase agreements
Offsetting of financial liabilities and derivative liabilities
Gross Amounts of Recognized Liabilities	106,861	149,835
Net Amounts of Liabilities Presented in the Statement of Financial Position	106,861	149,835
Gross amounts Not Offset in the Statement of Financial Position
Financial Instruments	$ 106,861	$ 149,835

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Derivative Financial Instruments (Details 5) - U.S. Treasury and Federal agencies securities - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Overnight and Continuous
Transfer of Certain Financial Assets Accounted for as Secured Borrowings
Repurchase agreements	$ 104,450	$ 148,220
Up to 30 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings
Repurchase agreements	2,410	1,320
Greater than 90 Days
Transfer of Certain Financial Assets Accounted for as Secured Borrowings
Repurchase agreements	$ 0	$ 300

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Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Outstanding stock options (in shares)	0	0	0	0
Distributed earnings allocated to common stock	$ 6,225	$ 4,923	$ 11,929	$ 9,586
Undistributed earnings allocated to common stock	15,591	11,618	28,869	23,040
Net earnings allocated to common stock	21,816	16,541	40,798	32,626
Net earnings allocated to participating securities	148	128	282	249
Net income allocated to common stock and participating securities	$ 21,964	$ 16,669	$ 41,080	$ 32,875
Weighted average shares outstanding for basic earnings per common share	25,958,128	25,927,032	25,954,278	25,915,280
Dilutive effect of stock compensation (in shares)	0	0	0	0
Weighted average shares outstanding for diluted earnings per common share	25,958,128	25,927,032	25,954,278	25,915,280
Basic earnings per common share (in dollars per share)	$ 0.84	$ 0.64	$ 1.57	$ 1.26
Diluted earnings per common share (in dollars per share)	$ 0.84	$ 0.64	$ 1.57	$ 1.26

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Stock Based Compensation (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2018 USD ($) item shares	Jun. 30, 2017 USD ($) shares
Stock-based compensation
Number of stock-based employee compensation plans | item	4
Number of executive stock award plans | item	3
Outstanding stock options (in shares)	0	0
Total unrecognized compensation cost related to non-vested share-based compensation arrangements | $	$ 6,690
Weighted-average period over which unrecognized compensation cost is expected to be recognized	3 years 3 months 1 day
Stock options
Stock-based compensation
Total fair value of options vested and expensed | $	$ 0	$ 0
Outstanding stock options (in shares)	0	0
Stock options exercised (in shares)	0	0

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Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Reclassifications out of accumulated other comprehensive income
Gains (losses) on investment securities available-for-sale	$ 0		$ (345)
Gains (losses) on investment securities available-for-sale (including equity securities)		$ 465		$ 1,750
Income before income taxes	27,498	26,154	52,494	51,069
Income tax expense	(5,534)	(9,485)	(11,414)	(18,194)
Net income	21,964	16,669	41,080	32,875
Unrealized gains and losses on available-for-sale securities | Amount Reclassified from Accumulated Other Comprehensive Income
Reclassifications out of accumulated other comprehensive income
Gains (losses) on investment securities available-for-sale	0		(345)
Gains (losses) on investment securities available-for-sale (including equity securities)		465		1,750
Income before income taxes	0	465	(345)	1,750
Income tax expense	0	(175)	83	(657)
Net income	$ 0	$ 290	$ (262)	$ 1,093

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Income Taxes (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Unrecognized tax benefits that would affect the effective tax rate if recognized	$ 0		$ 720
Interest and penalties net of tax recognized	(90)	$ 40
Accrued interest and penalties	0		$ 90
Settlements	$ 1,050
Statutory federal income tax (as a percent)	21.00%		35.00%
Deferred tax liability remeasurement			$ 2,610
Deferred tax liability remeasurement (as a percent)			2.60%
Estimated deferred tax liabilities associated with tax advantaged partnerships	$ 1,920		$ 1,920

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Fair Value Measurements (Details) - USD ($) $ in Thousands		Jun. 30, 2018	Dec. 31, 2017
Fair value measurements
Fair value carrying amount		$ 8,235	$ 13,123
Mortgages held for sale reported at fair value
Fair value measurements
Fair value carrying amount		8,235	13,123
Aggregate unpaid principal		8,051	12,967
Excess of fair value carrying amount over (under) unpaid principal	[1]	$ 184	$ 156

[1] The excess of fair value carrying amount over (under) unpaid principal is included in mortgage banking income and includes changes in fair value at and subsequent to funding and gains and losses on the related loan commitment prior to funding.

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Fair Value Measurements (Details 2) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair value measurements
Investment securities available-for-sale	$ 968,349	$ 904,033
Assets:
Mortgages held for sale	8,235	13,123
U.S. Treasury and Federal agencies securities
Fair value measurements
Investment securities available-for-sale	524,134	468,119
U.S. States and political subdivisions securities
Fair value measurements
Investment securities available-for-sale	95,902	116,000
Mortgage-backed securities - Federal agencies
Fair value measurements
Investment securities available-for-sale	302,279	287,910
Corporate debt securities
Fair value measurements
Investment securities available-for-sale	45,327	31,294
Foreign government and other securities
Fair value measurements
Investment securities available-for-sale	707	710
Total
Fair value measurements
Investment securities available-for-sale	968,349	904,033
Assets:
Mortgages held for sale	8,235	13,123
Level 1
Fair value measurements
Investment securities available-for-sale	33,671	27,971
Assets:
Mortgages held for sale	0	0
Level 2
Fair value measurements
Investment securities available-for-sale	932,330	873,197
Assets:
Mortgages held for sale	8,235	13,123
Level 3
Fair value measurements
Investment securities available-for-sale	2,348	2,865
Assets:
Mortgages held for sale	0	0
Recurring basis | Total
Fair value measurements
Investment securities available-for-sale	968,349	904,033
Assets:
Mortgages held for sale	8,235	13,123
Total	983,933	922,323
Liabilities:
Total	7,480	5,262
Recurring basis | Total | Interest rate swap contracts
Assets:
Accrued income and other assets	7,349	5,167
Liabilities:
Accrued expenses and other liabilities	7,480	5,262
Recurring basis | Total | U.S. Treasury and Federal agencies securities
Fair value measurements
Investment securities available-for-sale	524,134	468,119
Recurring basis | Total | U.S. States and political subdivisions securities
Fair value measurements
Investment securities available-for-sale	95,902	116,000
Recurring basis | Total | Mortgage-backed securities - Federal agencies
Fair value measurements
Investment securities available-for-sale	302,279	287,910
Recurring basis | Total | Corporate debt securities
Fair value measurements
Investment securities available-for-sale	45,327	31,294
Recurring basis | Total | Foreign government and other securities
Fair value measurements
Investment securities available-for-sale	707	710
Recurring basis | Level 1
Fair value measurements
Investment securities available-for-sale	33,671	27,971
Assets:
Mortgages held for sale	0	0
Total	33,671	27,971
Liabilities:
Total	0	0
Recurring basis | Level 1 | Interest rate swap contracts
Assets:
Accrued income and other assets	0	0
Liabilities:
Accrued expenses and other liabilities	0	0
Recurring basis | Level 1 | U.S. Treasury and Federal agencies securities
Fair value measurements
Investment securities available-for-sale	33,671	27,971
Recurring basis | Level 1 | U.S. States and political subdivisions securities
Fair value measurements
Investment securities available-for-sale	0	0
Recurring basis | Level 1 | Mortgage-backed securities - Federal agencies
Fair value measurements
Investment securities available-for-sale	0	0
Recurring basis | Level 1 | Corporate debt securities
Fair value measurements
Investment securities available-for-sale	0	0
Recurring basis | Level 1 | Foreign government and other securities
Fair value measurements
Investment securities available-for-sale	0	0
Recurring basis | Level 2
Fair value measurements
Investment securities available-for-sale	932,330	873,197
Assets:
Mortgages held for sale	8,235	13,123
Total	947,914	891,487
Liabilities:
Total	7,480	5,262
Recurring basis | Level 2 | Interest rate swap contracts
Assets:
Accrued income and other assets	7,349	5,167
Liabilities:
Accrued expenses and other liabilities	7,480	5,262
Recurring basis | Level 2 | U.S. Treasury and Federal agencies securities
Fair value measurements
Investment securities available-for-sale	490,463	440,148
Recurring basis | Level 2 | U.S. States and political subdivisions securities
Fair value measurements
Investment securities available-for-sale	94,261	113,845
Recurring basis | Level 2 | Mortgage-backed securities - Federal agencies
Fair value measurements
Investment securities available-for-sale	302,279	287,910
Recurring basis | Level 2 | Corporate debt securities
Fair value measurements
Investment securities available-for-sale	45,327	31,294
Recurring basis | Level 2 | Foreign government and other securities
Fair value measurements
Investment securities available-for-sale	0	0
Recurring basis | Level 3
Fair value measurements
Investment securities available-for-sale	2,348	2,865
Assets:
Mortgages held for sale	0	0
Total	2,348	2,865
Liabilities:
Total	0	0
Recurring basis | Level 3 | Interest rate swap contracts
Assets:
Accrued income and other assets	0	0
Liabilities:
Accrued expenses and other liabilities	0	0
Recurring basis | Level 3 | U.S. Treasury and Federal agencies securities
Fair value measurements
Investment securities available-for-sale	0	0
Recurring basis | Level 3 | U.S. States and political subdivisions securities
Fair value measurements
Investment securities available-for-sale	1,641	2,155
Recurring basis | Level 3 | Mortgage-backed securities - Federal agencies
Fair value measurements
Investment securities available-for-sale	0	0
Recurring basis | Level 3 | Corporate debt securities
Fair value measurements
Investment securities available-for-sale	0	0
Recurring basis | Level 3 | Foreign government and other securities
Fair value measurements
Investment securities available-for-sale	$ 707	$ 710

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Fair Value Measurements (Details 3) $ in Thousands	3 Months Ended
	Jun. 30, 2018 USD ($) item	Jun. 30, 2017 USD ($) item
Changes in the fair value of Level 3 assets measured on a recurring basis
Total gains or losses (unrealized): included in earnings	$ 0	$ 0
Number of transfers between levels | item	0	0
U.S. States and political subdivisions securities
Changes in the fair value of Level 3 assets measured on a recurring basis
Balance at the beginning of the period	$ 2,155	$ 2,018
Total gains or losses (realized/unrealized): included in earnings	0	0
Total gains or losses (realized/unrealized): included in other comprehensive income	4	11
Purchases	0	287
Issuances	0	0
Sales	0	0
Settlements	0	0
Maturities	(518)	(515)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance at the end of the period	1,641	1,801
Foreign government and other securities
Changes in the fair value of Level 3 assets measured on a recurring basis
Balance at the beginning of the period	708	804
Total gains or losses (realized/unrealized): included in earnings	0	0
Total gains or losses (realized/unrealized): included in other comprehensive income	(1)	(2)
Purchases	0	0
Issuances	0	0
Sales	0	0
Settlements	0	0
Maturities	0	(500)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance at the end of the period	707	302
Investment securities available-for-sale
Changes in the fair value of Level 3 assets measured on a recurring basis
Balance at the beginning of the period	2,863	2,822
Total gains or losses (realized/unrealized): included in earnings	0	0
Total gains or losses (realized/unrealized): included in other comprehensive income	3	9
Purchases	0	287
Issuances	0	0
Sales	0	0
Settlements	0	0
Maturities	(518)	(1,015)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance at the end of the period	$ 2,348	$ 2,103

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Fair Value Measurements (Details 4) $ in Thousands	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
Valuation Methodology
Investment securities, available-for-sale	$ 968,349	$ 904,033
Level 3
Valuation Methodology
Investment securities, available-for-sale	2,348	2,865
Recurring | Level 3
Valuation Methodology
Investment securities, available-for-sale	2,348	2,865
Recurring | Level 3 | Discounted cash flows | Direct placement municipal securities
Valuation Methodology
Investment securities, available-for-sale	1,641	2,155
Recurring | Level 3 | Discounted cash flows | Foreign government
Valuation Methodology
Investment securities, available-for-sale	$ 707	$ 710
Discount for lack of marketability | Non-recurring | Level 3 | Trade publications | Aircraft
Unobservable Inputs
Discount rate (as a percent)	0.10
Discount for lack of marketability | Non-recurring | Level 3 | Auction values | Autos
Unobservable Inputs
Discount rate (as a percent)	0.10
Discount for lack of marketability | Non-recurring | Level 3 | Trade publications and auction values | Medium and heavy duty trucks
Unobservable Inputs
Discount rate (as a percent)	0.15
Discount for lack of marketability | Non-recurring | Level 3 | Trade publications and auction values | Construction equipment
Unobservable Inputs
Discount rate (as a percent)	0.20
Discount for lack of marketability | Non-recurring | Level 3 | Appraisals | Real estate
Unobservable Inputs
Discount rate (as a percent)	0.20
Credit spread assumption | Recurring | Level 3 | Discounted cash flows | Direct placement municipal securities | Minimum
Unobservable Inputs
Debt securities available-for-sale unobservable inputs (as a percent)	0.0011	0.0221
Credit spread assumption | Recurring | Level 3 | Discounted cash flows | Direct placement municipal securities | Maximum
Unobservable Inputs
Debt securities available-for-sale unobservable inputs (as a percent)	0.0302	0.0293
Market yield assumption | Recurring | Level 3 | Discounted cash flows | Foreign government | Minimum
Unobservable Inputs
Debt securities available-for-sale unobservable inputs (as a percent)	0.0000	0.0035
Market yield assumption | Recurring | Level 3 | Discounted cash flows | Foreign government | Maximum
Unobservable Inputs
Debt securities available-for-sale unobservable inputs (as a percent)	0.0121	0.0123
Receivables | Discount for lack of marketability | Non-recurring | Level 3 | Commercial loans
Unobservable Inputs
Discount rate (as a percent)	0.20
Inventory | Discount for lack of marketability | Non-recurring | Level 3 | Minimum | Commercial loans
Unobservable Inputs
Discount rate (as a percent)	0.40
Inventory | Discount for lack of marketability | Non-recurring | Level 3 | Maximum | Commercial loans
Unobservable Inputs
Discount rate (as a percent)	0.75

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Fair Value Measurements (Details 5) - Non-recurring - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Impaired loans
Fair value measurements
Impairment charges (recoveries)	$ 0
Partnership investments
Fair value measurements
Impairment charges (recoveries)	0
Mortgage servicing rights
Fair value measurements
Impairment charges (recoveries)	0
Repossessions
Fair value measurements
Impairment charges (recoveries)	280
Other real estate
Fair value measurements
Impairment charges (recoveries)	0
Total
Fair value measurements
Impaired loans - collateral based	17,602	$ 7,994
Assets measured at fair value	32,447	24,769
Total | Partnership investments
Fair value measurements
Accrued income and other assets	1,000	1,000
Total | Mortgage servicing rights
Fair value measurements
Accrued income and other assets	4,323	4,349
Total | Repossessions
Fair value measurements
Accrued income and other assets	9,389	10,114
Total | Other real estate
Fair value measurements
Accrued income and other assets	133	1,312
Level 3
Fair value measurements
Impaired loans - collateral based	17,602	7,994
Assets measured at fair value	32,447	24,769
Level 3 | Partnership investments
Fair value measurements
Accrued income and other assets	1,000	1,000
Level 3 | Mortgage servicing rights
Fair value measurements
Accrued income and other assets	4,323	4,349
Level 3 | Repossessions
Fair value measurements
Accrued income and other assets	9,389	10,114
Level 3 | Other real estate
Fair value measurements
Accrued income and other assets	$ 133	$ 1,312

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Fair Value Measurements (Details 6) - Non-recurring $ in Thousands	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
Level 3
Valuation Methodology
Assets measured at fair value	$ 32,447	$ 24,769
Carrying Value | Level 3 | Collateral based measurements | Impaired loans
Valuation Methodology
Assets measured at fair value	17,602	7,994
Carrying Value | Level 3 | Discounted cash flows | Mortgage servicing rights
Valuation Methodology
Assets measured at fair value	4,323	4,349
Carrying Value | Level 3 | Appraisals trade publications and auction values | Repossessions
Valuation Methodology
Assets measured at fair value	9,389	10,114
Carrying Value | Level 3 | Appraisals | Other real estate
Valuation Methodology
Assets measured at fair value	133	1,312
Fair Value
Valuation Methodology
Assets measured at fair value	32,447	24,769
Fair Value | Level 3 | Collateral based measurements | Impaired loans
Valuation Methodology
Assets measured at fair value	17,602	7,994
Fair Value | Level 3 | Discounted cash flows | Mortgage servicing rights
Valuation Methodology
Assets measured at fair value	7,536	7,187
Fair Value | Level 3 | Appraisals trade publications and auction values | Repossessions
Valuation Methodology
Assets measured at fair value	9,875	10,493
Fair Value | Level 3 | Appraisals | Other real estate
Valuation Methodology
Assets measured at fair value	$ 176	$ 1,441
Discount for lack of marketability and current conditions | Level 3 | Collateral based measurements | Impaired loans | Minimum
Unobservable Inputs
Impaired loans unobservable inputs (as a percent)	0.1000	0.0300
Discount for lack of marketability and current conditions | Level 3 | Collateral based measurements | Impaired loans | Maximum
Unobservable Inputs
Impaired loans unobservable inputs (as a percent)	0.3000	0.2000
Constant prepayment rate (CPR) | Level 3 | Discounted cash flows | Mortgage servicing rights | Minimum
Unobservable Inputs
Mortgage servicing rights unobservable inputs (as a percent)	0.0710	0.0860
Constant prepayment rate (CPR) | Level 3 | Discounted cash flows | Mortgage servicing rights | Maximum
Unobservable Inputs
Mortgage servicing rights unobservable inputs (as a percent)	0.2250	0.2070
Discount rate | Level 3 | Discounted cash flows | Mortgage servicing rights | Minimum
Unobservable Inputs
Mortgage servicing rights unobservable inputs (as a percent)	0.1010	0.0960
Discount rate | Level 3 | Discounted cash flows | Mortgage servicing rights | Maximum
Unobservable Inputs
Mortgage servicing rights unobservable inputs (as a percent)	0.1300	0.1250
Discount for lack of marketability | Level 3 | Appraisals trade publications and auction values | Repossessions | Minimum
Unobservable Inputs
Repossessions unobservable inputs (as a percent)	0.04	0.03
Discount for lack of marketability | Level 3 | Appraisals trade publications and auction values | Repossessions | Maximum
Unobservable Inputs
Repossessions unobservable inputs (as a percent)	0.10	0.10
Discount for lack of marketability | Level 3 | Appraisals | Other real estate | Minimum
Unobservable Inputs
Other real estate unobservable inputs (as a percent)	0.08	0.07
Discount for lack of marketability | Level 3 | Appraisals | Other real estate | Maximum
Unobservable Inputs
Other real estate unobservable inputs (as a percent)	0.61	0.09

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Fair Value Measurements (Details 7) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Assets:
Cash and due from banks	$ 71,102	$ 73,635
Federal funds sold and interest bearing deposits with other banks	73,358	4,398
Investment securities available-for-sale	968,349	904,033
Other investments	28,159	25,953
Mortgages held for sale	8,235	13,123
Loans and leases, net of reserve for loan and lease losses	4,736,816	4,432,795
Liabilities:
Long-term debt and mandatorily redeemable securities	71,194	70,060
Subordinated notes	58,764	58,764
Carrying or Contract Value
Assets:
Cash and due from banks	71,102	73,635
Federal funds sold and interest bearing deposits with other banks	73,358	4,398
Investment securities available-for-sale	968,349	904,033
Other investments	28,159	25,953
Mortgages held for sale	8,235	13,123
Loans and leases, net of reserve for loan and lease losses	4,736,816	4,432,795
Mortgage servicing rights	4,323	4,349
Interest rate swaps	7,349	5,167
Liabilities:
Deposits	5,108,439	4,752,730
Short-term borrowings	277,094	214,595
Long-term debt and mandatorily redeemable securities	71,194	70,060
Subordinated notes	58,764	58,764
Interest rate swaps	7,480	5,262
Off-balance-sheet instruments	0	0
Fair Value
Assets:
Cash and due from banks	71,102	73,635
Federal funds sold and interest bearing deposits with other banks	73,358	4,398
Investment securities available-for-sale	968,349	904,033
Other investments	28,159	25,953
Mortgages held for sale	8,235	13,123
Loans and leases, net of reserve for loan and lease losses	4,690,436	4,428,848
Mortgage servicing rights	7,536	7,187
Interest rate swaps	7,349	5,167
Liabilities:
Deposits	5,095,168	4,745,111
Short-term borrowings	277,094	214,595
Long-term debt and mandatorily redeemable securities	68,373	67,857
Subordinated notes	48,956	57,103
Interest rate swaps	7,480	5,262
Off-balance-sheet instruments	294	286
Level 1
Assets:
Cash and due from banks	71,102	73,635
Federal funds sold and interest bearing deposits with other banks	73,358	4,398
Investment securities available-for-sale	33,671	27,971
Other investments	28,159	25,953
Mortgages held for sale	0	0
Loans and leases, net of reserve for loan and lease losses	0	0
Mortgage servicing rights	0	0
Interest rate swaps	0	0
Liabilities:
Deposits	3,601,586	3,482,757
Short-term borrowings	106,268	206,862
Long-term debt and mandatorily redeemable securities	0	0
Subordinated notes	0	0
Interest rate swaps	0	0
Off-balance-sheet instruments	0	0
Level 2
Assets:
Cash and due from banks	0	0
Federal funds sold and interest bearing deposits with other banks	0	0
Investment securities available-for-sale	932,330	873,197
Other investments	0	0
Mortgages held for sale	8,235	13,123
Loans and leases, net of reserve for loan and lease losses	0	0
Mortgage servicing rights	0	0
Interest rate swaps	7,349	5,167
Liabilities:
Deposits	1,493,582	1,262,354
Short-term borrowings	170,826	7,733
Long-term debt and mandatorily redeemable securities	68,373	67,857
Subordinated notes	48,956	57,103
Interest rate swaps	7,480	5,262
Off-balance-sheet instruments	294	286
Level 3
Assets:
Cash and due from banks	0	0
Federal funds sold and interest bearing deposits with other banks	0	0
Investment securities available-for-sale	2,348	2,865
Other investments	0	0
Mortgages held for sale	0	0
Loans and leases, net of reserve for loan and lease losses	4,690,436	4,428,848
Mortgage servicing rights	7,536	7,187
Interest rate swaps	0	0
Liabilities:
Deposits	0	0
Short-term borrowings	0	0
Long-term debt and mandatorily redeemable securities	0	0
Subordinated notes	0	0
Interest rate swaps	0	0
Off-balance-sheet instruments	$ 0	$ 0