CNB Financial (CCNE) 10-K 7 Mar 19 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Mar. 04, 2019	Jun. 30, 2018
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Trading Symbol	CCNE
Entity Registrant Name	CNB FINANCIAL CORP/PA
Entity Central Index Key	736,772
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		15,239,527
Entity Public Float			$ 433,388,637

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 43,327	$ 33,146
Interest bearing deposits with other banks	2,236	2,199
Total cash and cash equivalents	45,563	35,345
Securities available for sale	516,863	409,709
Trading securities	7,786	7,150
Loans held for sale	367	852
Loans	2,479,348	2,149,848
Less: unearned discount	(4,791)	(3,889)
Less: allowance for loan losses	(19,704)	(19,693)
Net loans	2,454,853	2,126,266
FHLB and other equity interests	24,508	21,517
Premises and equipment, net	49,920	50,715
Bank owned life insurance	56,443	55,035
Mortgage servicing rights	1,495	1,387
Goodwill	38,730	38,730
Core deposit intangible	727	1,625
Accrued interest receivable and other assets	24,266	20,442
Total Assets	3,221,521	2,768,773
LIABILITIES AND SHAREHOLDERS’ EQUITY
Non-interest bearing deposits	356,797	321,858
Interest bearing deposits	2,253,989	1,845,957
Total deposits	2,610,786	2,167,815
Short-term borrowings	0	34,416
FHLB and other long-term borrowings	245,117	222,943
Subordinated debentures	70,620	70,620
Accrued interest payable and other liabilities	32,168	29,069
Total liabilities	2,958,691	2,524,863
Commitments and contingent liabilities
Common stock, $0 par value; authorized 50,000,000 shares; issued 15,308,378 shares at December 31, 2018 and 2017	0	0
Additional paid in capital	97,602	97,042
Retained earnings	171,780	148,298
Treasury stock, at cost (101,097 and 43,638 shares for 2018 and 2017, respectively)	(2,556)	(1,087)
Accumulated other comprehensive loss	(3,996)	(343)
Total shareholders’ equity	262,830	243,910
Total Liabilities and Shareholders’ Equity	$ 3,221,521	$ 2,768,773

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	15,308,378	15,308,378
Treasury stock, shares (in shares)	101,097	43,638

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest and Dividend Income:
Loans including fees	$ 118,193	$ 97,005	$ 81,209
Securities:
Taxable	9,921	8,165	9,134
Tax-exempt	2,739	2,983	3,390
Dividends	1,017	721	582
Total interest and dividend income	131,870	108,874	94,315
Interest Expense:
Deposits	17,228	9,312	8,470
Borrowed funds	5,856	4,021	2,981
Subordinated debentures (includes $164, $288, and $340 accumulated other comprehensive income reclassification for change in fair value of interest rate swap agreements in 2018, 2017, and 2016, respectively)	3,866	4,032	1,577
Total interest expense	26,950	17,365	13,028
Net Interest Income	104,920	91,509	81,287
Provision for Loan Losses	6,072	6,655	4,149
Net Interest Income After Provision for Loan Losses	98,848	84,854	77,138
Non-Interest Income:
Service charges on deposit accounts	5,759	4,809	4,297
Other service charges and fees	2,833	2,454	2,539
Wealth and asset management fees	4,172	3,724	3,087
Net realized gains on available-for-sale securities (includes $0, $1,543, and $1,005 accumulated other comprehensive income reclassifications for net realized gains on available-for-sale securities in 2018, 2017, and 2016, respectively)	0	1,543	1,005
Net realized gains on trading securities	151	93	70
Net unrealized gains (losses) on trading securities	(602)	788	433
Mortgage banking	1,019	906	1,095
Bank owned life insurance	1,408	1,659	1,082
Card processing and interchange income	4,261	3,763	3,396
Gain on sale of branch	0	536	0
Other	1,722	1,160	687
Total non-interest income	20,723	21,435	17,691
Non-Interest Expenses:
Salaries	31,323	26,205	23,472
Employee benefits (includes $84, $192, and $184 accumulated other comprehensive income reclassifications for net amortization of actuarial losses in 2018, 2017, and 2016, respectively)	10,533	9,821	8,722
Net occupancy expense	10,281	9,546	8,064
Amortization of core deposit intangible	898	1,229	1,125
Data processing	4,586	3,944	4,447
State and local taxes	3,441	2,815	2,171
Legal, professional and examination fees	1,851	1,819	1,772
Advertising	2,345	2,243	1,799
FDIC insurance	1,396	1,182	1,229
Directors fees and benefits	763	915	1,582
Prepayment penalties — long-term borrowings	0	0	1,506
Core processing conversion costs	0	0	1,693
Merger costs	0	0	486
Card processing and interchange expenses	2,834	2,116	1,889
Other	9,091	8,202	7,161
Total non-interest expenses	79,342	70,037	67,118
Income Before Income Taxes	40,229	36,252	27,711
Income Tax Expense (includes $(52), $372, and $168 income tax expense reclassification items in 2018, 2017, and 2016, respectively)	6,510	12,392	7,171
Net Income	33,719	23,860	20,540
Other Comprehensive Income (Loss):
Net change in unrealized losses on available-for-sale securities, net of reclassification and tax	(4,007)	(1,004)	(2,136)
Change in actuarial gain (loss), for post-employment health care plan, net of amortization and tax	386	825	(64)
Change in fair value of interest rate swap agreements designated as a cash flow hedge, net of interest and tax	(32)	194	180
Total other comprehensive (loss) income	(3,653)	15	(2,020)
Comprehensive Income	$ 30,066	$ 23,875	$ 18,520
Earnings Per Share:
Basic (in dollars per share)	$ 2.21	$ 1.57	$ 1.42
Diluted (in dollars per share)	$ 2.21	$ 1.57	$ 1.42

Consolidated Statements of In_2

Consolidated Statements of Income and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Accumulated other comprehensive income reclassification for change in fair value of interest rate swap agreements	$ 164	$ 288	$ 340
Accumulated other comprehensive income reclassifications for net realized gains on available-for-sale securities	0	1,543	1,005
Accumulated other comprehensive income reclassifications on employee benefits	84	192	184
Income tax expense from reclassification	$ (52)	$ 372	$ 168

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash Flows From Operating Activities:
Net income	$ 33,719	$ 23,860	$ 20,540
Adjustments to reconcile net income to net cash provided by operations:
Provision for loan losses	6,072	6,655	4,149
Depreciation and amortization of premises and equipment, core deposit intangible, and mortgage servicing rights	4,811	5,242	4,484
Amortization and accretion of securities premiums and discounts, deferred loan fees and costs, net yield and credit mark on acquired loans, and unearned income	(537)	(1,202)	(1,328)
Deferred taxes	(1,076)	3,385	1,023
Net realized gains on sales of available-for-sale securities	0	(1,543)	(1,005)
Net realized and unrealized losses (gains) on trading securities	451	(881)	(503)
Proceeds from sale of trading securities	455	1,091	540
Purchase of trading securities	(1,542)	(2,502)	(319)
Gain on sale of branch	0	(536)	0
Gain on sale of loans	(624)	(545)	(818)
Net losses (gains) on dispositions of premises and equipment and foreclosed assets	47	(107)	134
Proceeds from sale of loans	23,311	24,285	33,045
Origination of loans held for sale	(22,990)	(25,231)	(31,255)
Income on bank owned life insurance, including death benefit of proceeds in excess of cash surrender value	(1,408)	(1,659)	(1,082)
Stock-based compensation expense	1,545	928	820
Contribution of treasury stock	0	0	150
Changes in:
Accrued interest receivable and other assets	(3,079)	(1,175)	(3,906)
Accrued interest payable and other liabilities	4,613	698	2,095
Net Cash Provided By Operating Activities	43,768	30,763	26,764
Cash Flows from Investing Activities:
Proceeds from maturities, prepayments and calls of available-for-sale securities	76,349	92,302	63,837
Proceeds from sales of available-for-sale securities	0	16,340	4,420
Purchase of available-for-sale securities	(189,374)	(23,689)	(21,513)
Loan origination and payments, net	(333,552)	(273,972)	(182,566)
Purchase of bank owned life insurance	0	(10,000)	0
Proceeds from death benefit of BOLI policies	0	897	0
Net cash received from sale of branch	0	1,079	0
Net cash paid for Lake National Bank acquisition	0	0	(2,866)
Purchase of FHLB and other equity interests	(2,991)	(2,331)	(2,628)
Purchase of premises and equipment	(3,068)	(5,215)	(10,125)
Proceeds from the sale of premises and equipment and foreclosed assets	1,048	938	558
Net Cash Used In Investing Activities	(451,588)	(203,651)	(150,883)
Net change in:
Checking, money market and savings accounts	412,505	16,096	79,745
Certificates of deposit	30,466	134,197	(10,603)
Deposits held for sale	0	1,079	0
Purchase of treasury stock	(2,454)	(1,877)	(44)
Proceeds from stock offering, net of issuance costs	0	19,294	0
Cash dividends paid	(10,237)	(10,094)	(9,546)
Proceeds from long-term borrowings	50,000	160,000	80,000
Repayments on long-term borrowings	(27,826)	(70,092)	(81,317)
Net change in short-term borrowings	(34,416)	(69,553)	17,806
Proceeds from subordinated debentures	0	0	50,000
Net Cash Provided By Financing Activities	418,038	179,050	126,041
Net Increase in Cash and Cash Equivalents	10,218	6,162	1,922
Cash and Cash Equivalents, Beginning	35,345	29,183	27,261
Cash and Cash Equivalents, Ending	45,563	35,345	29,183
Cash paid during the period for:
Interest	26,551	17,481	13,284
Income taxes	7,050	7,810	3,966
Supplemental Noncash Disclosures:
Transfers to other real estate owned	228	630	120
Grant of restricted stock awards from treasury stock	996	984	896
Net liabilities assumed from Lake National Bank, excluding cash and cash equivalents	0	0	8,670
Net loans transferred to held for sale	0	0	7,319
Net deposits transferred to held for sale	$ 0	$ 0	$ 6,456

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2015	$ 201,913	$ 77,827	$ 123,301	$ (1,114)	$ 1,899
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	20,540		20,540
Reclassification of certain tax effects from accumulated other comprehensive income to retained earnings					0
Other comprehensive income (loss)	(2,020)				(2,020)
Restricted stock award grants	0	(896)		896
Stock-based compensation expense	820	820
Purchase of treasury stock	(44)			(44)
Reissue of treasury stock	121	(14)		135
Cash dividends declared	(9,546)		(9,546)
Ending balance at Dec. 31, 2016	211,784	77,737	134,295	(127)	(121)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	23,860		23,860
Reclassification of certain tax effects from accumulated other comprehensive income to retained earnings	0		237		(237)
Other comprehensive income (loss)	15				15
Forfeiture of restricted stock award grants	0	67		(67)
Restricted stock award grants	0	(984)		984
Stock-based compensation expense	928	928
Issuance of common stock, net of issuance costs	19,294	19,294
Purchase of treasury stock	(1,877)			(1,877)
Cash dividends declared	(10,094)		(10,094)
Ending balance at Dec. 31, 2017	243,910	97,042	148,298	(1,087)	(343)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	33,719		33,719
Reclassification of certain tax effects from accumulated other comprehensive income to retained earnings					0
Other comprehensive income (loss)	(3,653)				(3,653)
Forfeiture of restricted stock award grants	0	11		(11)
Restricted stock award grants	0	(996)		996
Stock-based compensation expense	1,545	1,545
Purchase of treasury stock	(2,454)			(2,454)
Cash dividends declared	(10,237)		(10,237)
Ending balance at Dec. 31, 2018	$ 262,830	$ 97,602	$ 171,780	$ (2,556)	$ (3,996)

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Stockholders' Equity [Abstract]
Forfeiture of restricted stock award grants (in shares)	361	2,482
Restricted stock award grants (in shares)	40,108	39,673	52,570
Issuance of common stock, net of issuance costs (in shares)		834,896
Purchase of treasury stock (in shares)	97,206	75,162	1,298
Reissue of treasury stock (in shares)			7,933
Cash dividends declared (in dollars per share)	$ 0.67	$ 0.66	$ 0.66

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Unless otherwise indicated, dollar amounts are in thousands, except per share data. Business and Organization CNB Financial Corporation (the “Corporation”) is headquartered in Clearfield, Pennsylvania, and provides a full range of banking and related services through its wholly owned subsidiary, CNB Bank (the “Bank”). In addition, the Bank provides trust and asset management services, including the administration of trusts and estates, retirement plans, and other employee benefit plans as well as a full range of wealth management services. The Bank serves individual and corporate customers and is subject to competition from other financial institutions and intermediaries with respect to these services. In addition to the Bank, the Corporation also operates a consumer discount loan and finance business through its wholly owned subsidiary, Holiday Financial Services Corporation (“Holiday”). The Corporation and its other subsidiaries are subject to examination by federal and state regulators. The Corporation’s market area is primarily concentrated in the central and northwest regions of the Commonwealth of Pennsylvania, the central and northeast regions of the state of Ohio and western New York. Basis of Financial Presentation The financial statements are consolidated to include the accounts of the Corporation and the Bank, CNB Securities Corporation, Holiday, CNB Risk Management, Inc. and CNB Insurance Agency. All significant intercompany accounts and transactions have been eliminated in the consolidated financial statements. Certain prior period amounts have been reclassified to conform to the current period presentation. Reclassifications had no effect on prior year net income or shareholders’ equity. Use of Estimates To prepare financial statements in conformity with accounting principles generally accepted in the U.S., management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ. Operating Segments While the chief decision-makers monitor the revenue streams of the various products and services, operations are managed and financial performance is evaluated on a Corporation-wide basis, and operating segments are aggregated into one as operating results for all segments are similar. Accordingly, all of the financial service operations are considered by management to be aggregated in one reportable operating segment. Securities When purchased, securities are classified as held to maturity, trading or available for sale. Debt securities are classified as held to maturity when the Corporation has the positive intent and ability to hold the securities to maturity. Held to maturity securities are carried at amortized cost. Debt securities are classified as trading when purchased principally for the purpose of selling them in the near term, or when the fair value option has been elected. Equity securities are classified as trading securities. Trading securities are recorded at fair value with changes in fair value included in earnings in non-interest income. Available for sale securities are those securities not classified as held to maturity or trading and are carried at their fair value. Unrealized gains and losses, net of deferred tax, on securities classified as available for sale are recorded as other comprehensive income. Management has not classified any debt securities as held to maturity. The amortized cost of debt securities classified as held to maturity or available for sale is adjusted for the amortization of premiums and the accretion of discounts over the period through contractual maturity or, in the case of mortgage-backed securities and collateralized mortgage obligations, over the estimated life of the security. Such amortization is included in interest income from securities. Gains and losses on securities sold are recorded on the trade date and based on the specific identification method. Declines in the fair value of debt securities below their cost that are other-than-temporary and attributable to credit losses are reflected in earnings. Other-than-temporary impairment losses that are not attributable to credit losses are reported as a component of accumulated other comprehensive income. In estimating other-than-temporary losses, management considers: the length of time and extent that fair value has been less than cost, the financial condition and near term prospects of the issuer, and the Corporation’s intent to sell, or whether it is "more likely than not" that it will be required to sell a security in an unrealized loss position before recovery of its amortized cost basis. If the Corporation intends to sell a security or it is "more likely than not" it will be required to sell a security before recovery of its amortized cost basis, the entire difference between amortized cost and fair value is recognized as impairment through earnings. Loans Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal balance outstanding. Interest income is reported on the interest method and includes amortization of net deferred loan fees and costs over the loan term. Interest income on commercial, industrial, and agricultural loans, commercial mortgage loans, and residential real estate loans is discontinued at the time the loan is 90 days delinquent unless the credit is well-secured and in process of collection. Consumer loans are typically charged off no later than 180 days past due. Past due status is based on the contractual terms of the loan. Loans, including loans modified in a troubled debt restructuring, are placed on nonaccrual or charged off at an earlier date if collection of principal or interest is considered doubtful. Nonaccrual loans and loans past due 90 days still on accrual include both smaller balance homogeneous loans that are collectively evaluated for impairment and individually classified impaired loans. All interest accrued but not received on loans placed on nonaccrual is reversed against interest income. Interest received on such loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. Under the cost-recovery method, interest income is not recognized until the loan balance is reduced to zero. Under the cash-basis method, interest income is recorded when the payment is received in cash. For all portfolio segments, loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured Concentration of Credit Risk Most of the Corporation’s business activity is with customers located within the Commonwealth of Pennsylvania and the states of Ohio and New York. Therefore, the Corporation’s exposure to credit risk is significantly affected by changes in the economies of Pennsylvania, Ohio, and New York. Purchased Loans The Corporation purchased loans in connection with its acquisition of FC Banc Corp. in 2013 and Lake National Bank in 2016, some of which had, at the acquisition date, shown evidence of credit deterioration since origination. These purchased credit impaired loans were recorded at the amount paid, such that there was no carryover of the seller’s allowance for loan losses. Such purchased credit impaired loans are accounted for individually, and the Corporation estimates the amount and timing of expected cash flows for each loan. The expected cash flows in excess of the amount paid is recorded as interest income over the remaining life of the loan (accretable yield). The excess of the loan’s contractual principal and interest over expected cash flows is not recorded (nonaccretable difference). Over the life of the loan, expected cash flows continue to be estimated. If the present value of expected cash flows is less than the carrying amount, a loss is recorded. If the present value of the expected cash flows is greater than the carrying amount, it is recognized as part of future interest income. For loans purchased that did not show evidence of credit deterioration, the difference between the fair value of the loan at the acquisition date and the loan’s face value is being amortized as a yield adjustment over the estimated remaining life of the loan using the effective interest method. Loans Held for Sale Loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or fair value, as determined by outstanding commitments from investors. Net unrealized losses, if any, are recorded as a valuation allowance and charged to earnings. Mortgage loans held for sale are generally sold with servicing rights retained. The carrying value of the mortgage loan sold is reduced by the amount allocated to the servicing right. Gains and losses on sales of mortgage loans are based on the difference between the selling price and the carrying value of the related loan sold. Allowance for Loan Losses The allowance for loan losses is a valuation allowance for probable incurred credit losses. Loan losses are charged against the allowance when management believes the uncollectibility of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance account. Management determines the adequacy of the allowance based on historical patterns of charge-offs and recoveries, the nature and volume of the portfolio, information about specific borrower situations and estimated collateral values, industry experience, economic conditions, and other qualitative factors relevant to the collectability of the loan portfolio. While management believes that the allowance is adequate to absorb probable loan losses incurred at the balance sheet date, future adjustments may be necessary due to circumstances that differ substantially from the assumptions used in evaluating the adequacy of the allowance for loan losses. The allowance consists of specific and general components. The specific component relates to loans that are individually classified as impaired. A loan is impaired when, based on current information and events, it is probable that the Corporation will be unable to collect all amounts due according to the contractual terms of the loan agreement. Loans for which the terms have been modified, and for which the borrower is experiencing financial difficulties, are considered troubled debt restructurings and classified as impaired. Commercial and commercial real estate loans are individually evaluated for impairment. If a loan is impaired, a portion of the allowance is allocated so that the loan is reported, net, at the present value of estimated future cash flows using the loan’s existing rate or at the fair value of collateral if repayment is expected solely from the collateral. Large groups of smaller balance homogeneous loans, such as consumer and residential real estate loans, are collectively evaluated for impairment, and accordingly, they are not separately identified for impairment disclosures. Troubled debt restructurings are measured at the present value of estimated future cash flows using the loan’s effective rate at inception. If a troubled debt restructuring is considered to be a collateral dependent loan, the loan is reported, net, at the fair value of the collateral. For troubled debt restructurings that subsequently default, the Corporation determines the amount of reserve in accordance with the accounting policy for the allowance for loan losses. The general component of the allowance for loan losses covers non-impaired loans and loans collectively evaluated for impairment and is based on historical loss experience adjusted for current factors. The historical loss experience is determined by portfolio segment and is based on the migration analysis performed. This actual loss experience is supplemented with other factors based on the risks present for each portfolio segment. These historical loss factors include consideration of the following: levels of and trends in delinquencies, nonaccrual loans, and classified loans; trends in volume and terms of loans; effects of any changes in lending policies and procedures; experience, ability, and depth of management; national and local economic trends and conditions; and concentrations of credit. The following portfolio segments, which are the same as the Corporation’s portfolio classifications and associated risk characteristics, have been identified: • Commercial, industrial, and agricultural – risk characteristics include below average economic and employment conditions in many of the markets served by the Corporation, which has limited consumer spending. • Commercial mortgages – the most significant risk characteristic is the subjectivity involved in real estate valuations for properties located in areas with low growth economies. • Residential real estate – risk characteristics include slightly higher than historical levels of delinquencies and less than robust housing markets. • Consumer – risk characteristics include continuing weakness in industrial employment in many of the markets served by the Corporation and low wage growth. • Credit cards – the most significant risk characteristic is the unsecured nature of credit card loans. • Overdrafts – risk characteristics include the Corporation’s continued deposit growth and overall economic conditions which may lead to a greater likelihood of overdrawn deposit accounts. Federal Home Loan Bank Stock As a member of the Federal Home Loan Bank (“FHLB”) of Pittsburgh, the Corporation is required to purchase and hold stock in the FHLB to satisfy membership and borrowing requirements. This stock is restricted in that it can only be sold to the FHLB or to another member institution, and all sales of FHLB stock must be at par. As a result of these restrictions, FHLB stock is unlike other investment securities insofar as there is no trading market for FHLB stock and the transfer price is determined by FHLB membership rules and not by market participants. FHLB stock is held as a long-term investment, is valued at its cost basis and is analyzed for impairment based on the ultimate recoverability of the par value. The Company evaluates impairment quarterly. The decision of whether impairment exists is a matter of judgment that reflects our view of the FHLB’s long-term performance, which includes factors such as the following: • its operating performance; • the severity and duration of declines in the fair value of its net assets related to its capital stock amount; • its commitment to make payments required by law or regulation and the level of such payments in relation to its operating performance; • the impact of legislative and regulatory changes on the FHLB, and accordingly, on the members of FHLB; and • its liquidity and funding position. Premises and Equipment Premises and equipment are stated at cost less accumulated depreciation. Depreciation of premises and equipment is computed principally by the straight line method. In general, useful lives range from 3 to 39 years with lives for furniture, fixtures and equipment ranging from 3 to 10 years and lives of buildings and building improvements ranging from 15 to 39 years . Amortization of leasehold improvements is computed using the straight-line method over useful lives of the leasehold improvements or the term of the lease, whichever is shorter. Maintenance, repairs and minor renewals are charged to expense as incurred. Foreclosed Assets Assets acquired through or in lieu of loan foreclosure are initially recorded at fair value less estimated selling costs when acquired, establishing a new cost basis. Physical possession of residential real estate property collateralizing a consumer mortgage loan occurs when legal title is obtained upon completion of foreclosure or when the borrower conveys all interest in the property to satisfy the loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. These assets are subsequently accounted for at the lower of cost or fair value, less estimated costs to sell. If fair value declines, a valuation allowance is recorded through expense. Costs after acquisition are expensed. Bank Owned Life Insurance The Corporation has purchased life insurance policies on certain key employees. Bank-owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement. Goodwill and Other Intangible Assets Goodwill resulting from business combinations prior to January 1, 2009 represents the excess of the purchase price over the fair value of the net assets of businesses acquired. Goodwill resulting from business combinations after January 1, 2009 is generally determined as the excess of the fair value of the consideration transferred, plus the fair value of any noncontrolling interest in the acquiree, over the fair value of the net assets acquired and liabilities assumed as of the acquisition date. Goodwill and intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are not amortized, but tested for impairment at least annually or more frequently if events and circumstances exist that indicate an impairment test should be performed. The Corporation has selected December 31 as the date to perform the annual impairment test. Intangible assets with definite useful lives are amortized over their estimated useful lives. Goodwill is the only intangible asset with an indefinite life on the Corporation’s balance sheet. Other intangible assets consist of core deposit intangible assets arising from the acquisition of FC Banc Corp. in 2013 and Lake National Bank in 2016. The core deposit intangible assets from these acquisitions are amortized using an accelerated method over their estimated useful lives of seven years and four years , respectively. Long-term Assets Premises and equipment, goodwill and other intangible assets, and other long-term assets are reviewed for impairment when events indicate their carrying amount may not be recoverable from future undiscounted cash flows. If impaired, the assets are recorded at fair value. Loan Commitments and Related Financial Instruments Financial instruments include off-balance sheet credit instruments, such as commitments to make loans and commercial letters of credit, issued to meet customer financing needs. The face amount for these items represents the exposure to loss, before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded. Derivatives Derivative financial instruments are recognized as assets or liabilities at fair value. The Corporation has interest rate swap agreements which are used as part of its asset liability management to help manage interest rate risk. The Corporation does not use derivatives for trading purposes. At the inception of a derivative contract, the Corporation designates the derivative as one of three types based on the purpose of the contract and belief as to its effectiveness as a hedge. These three types are (1) a hedge of the fair value of a recognized asset or liability or of an unrecognized firm commitment (“fair value hedge”), (2) a hedge of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (“cash flow hedge”), or (3) an instrument with no hedging designation (“stand-alone derivative”). For a fair value hedge, the gain or loss on the derivative, as well as the offsetting loss or gain on the hedged item, are recognized in current earnings as fair values change. For a cash flow hedge, the gain or loss on the derivative is reported in other comprehensive income and is reclassified into earnings in the same periods during which the hedged transaction affects earnings. For both types of hedges, changes in the fair value of derivatives that are not highly effective in hedging the changes in fair value or expected cash flows of the hedged item are recognized immediately in current earnings. Changes in the fair value of derivatives that do not qualify for hedge accounting are reported currently in earnings, as non-interest income. Net cash settlements on derivatives that qualify for hedge accounting are recorded in interest income or interest expense, based on the item being hedged. Net cash settlements on derivatives that do not qualify for hedge accounting are reported in non-interest income. Cash flows on hedges are classified in the cash flow statement the same as the cash flows of the items being hedged. The Corporation formally documents the relationship between derivatives and hedged items, as well as the risk-management objective and the strategy for undertaking hedge transactions, at the inception of the hedging relationship. This documentation includes linking fair value or cash flow hedges to specific assets and liabilities on the balance sheet or to specific firm commitments or forecasted transactions. The Corporation also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivative instruments that are used are highly effective in offsetting changes in fair values or cash flows of the hedged items. The Corporation discontinues hedge accounting when it determines that the derivative is no longer effective in offsetting changes in the fair value or cash flows of the hedged item, the derivative is settled or terminates, a hedged forecasted transaction is no longer probable, a hedged firm commitment is no longer firm, or treatment of the derivative as a hedge is no longer appropriate or intended. When hedge accounting is discontinued, subsequent changes in fair value of the derivative are recorded as non-interest income. When a fair value hedge is discontinued, the hedged asset or liability is no longer adjusted for changes in fair value and the existing basis adjustment is amortized or accreted over the remaining life of the asset or liability. When a cash flow hedge is discontinued but the hedged cash flows or forecasted transactions are still expected to occur, gains or losses that were accumulated in other comprehensive income are amortized into earnings over the same periods which the hedged transactions will affect earnings. Advertising Costs Advertising costs are generally expensed as incurred and amounted to $2,345 , $2,243 and $1,799 , for 2018 , 2017 , and 2016 , respectively. Mortgage Servicing Rights Servicing rights are recognized separately when they are acquired through sales of loans. Servicing rights are initially recorded at fair value with the income statement effect recorded in mortgage banking. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, the custodial earnings rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses. The Corporation compares the valuation model inputs and results to published industry data in order to validate the model results and assumptions. All classes of servicing assets are subsequently measured using the amortization method which requires servicing rights to be amortized into non-interest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. Servicing rights are evaluated for impairment based upon the fair value of the rights as compared to carrying amount. Impairment is determined by stratifying rights into groupings based on predominant risk characteristics, such as interest rate, loan type and investor type. Impairment is recognized through a valuation allowance for an individual grouping, to the extent that fair value is less than the carrying amount. If the Corporation later determines that all or a portion of the impairment no longer exists for a particular grouping, a reduction of the allowance may be recorded as an increase to income. Changes in valuation allowances are reported with mortgage banking income on the income statement. The fair values of servicing rights are subject to significant fluctuations as a result of changes in estimated and actual prepayment speeds and default rates and losses. Servicing fee income, which is reported on the income statement as mortgage banking income, is recorded for fees earned for servicing loans. The fees are based on a contractual percentage of the outstanding principal or a fixed amount per loan and are recorded as income when earned. The amortization of mortgage servicing rights is netted against loan servicing fee income. Late fees and ancillary fees related to loan servicing are not material. Treasury Stock The purchase of the Corporation’s common stock is recorded at cost. Purchases of the stock are made in the open market based on market prices. At the date of subsequent reissue, the treasury stock account is reduced by the cost of such stock on a first-in-first-out basis. Stock-Based Compensation The Corporation has a stock incentive plan for key employees and independent directors. The Stock Incentive Plan, which is administered by a committee of the Board of Directors, provides for up to 500,000 shares of common stock to be awarded in the form of nonqualified options or restricted stock. For key employees, the plan vesting is either one-third or one-fourth of the granted options or restricted stock per year, beginning one year after the grant date, with 100% vesting on the third or fourth anniversary of the grant date, respectively. Prior to 2018, for independent directors, the vesting schedule was one-third of the granted options or restricted stock per year beginning one year after the grant date, with 100% vested on the third anniversary of the grant date. Beginning in 2018, stock compensation received by independent directors vests immediately. At December 31, 2018 and 2017 , there was no unrecognized compensation cost related to nonvested stock options granted under this plan, and no stock options were granted during the years ended December 31, 2018 , 2017 , and 2016 . In addition to the time-based restricted stock disclosed above, the Corporation’s Board of Directors grants performance-based restricted stock awards (“PBRSAs”) to key employees. The number of PBRSAs will depend on certain performance conditions and are also subject to service-based vesting. In 2018, awards with a maximum of 10,468 shares in aggregate were granted to key employees. In 2017, an award with a maximum of 5,306 shares was granted to a key employee. During 2018 , 2017 , and 2016 , the Executive Compensation and Personnel Committee of the Corporation's Board of Directors granted a total of 40,108 , 39,673 and 52,750 shares, respectively, of restricted common stock to certain key employees and all independent directors of the Corporation. Compensation expense for the restricted stock awards is recognized over the requisite service period based on the fair value of the shares at the date of grant on a straight-line basis. Nonvested restricted stock awards are recorded as a reduction of additional paid-in-capital in shareholders’ equity until earned. Compensation expense resulting from these restricted stock awards was $1,545 , $928 and $820 for the years ended December 31, 2018 , 2017 , and 2016 , respectively. Comprehensive Income The Corporation presents comprehensive income as part of the Consolidated Statement of Income and Comprehensive Income. Other comprehensive income (loss) consists of unrealized holding gains (losses) on the available for sale securities portfolio, changes in the unrecognized actuarial gain and transition obligation related to the Corporation’s post retirement benefits plans, and changes in the fair value of the Corporation’s interest rate swaps, net of tax. Income Taxes Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. Deferred tax assets and liabilities are the expected future tax amounts for the temporary differences between carrying amounts and tax bases of assets and liabilities, computed using enacted tax rates. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized. A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. The Corporation recognizes interest and/or penalties related to income tax matters in income tax expense. Retirement Plans The Corporation’s expense associated with its 401(k) plan is determined under the provisions of the plan document and includes both matching and profit sharing components. Deferred compensation and supplemental retirement plan expenses allocate the benefits over years of service. Earnings Per Share Basic earnings per share is computed by dividing net income available to common shareholders by the weighted average number of shares outstanding during the applicable period, excluding outstanding participating securities. Diluted earnings per share is computed using the weighted average number of shares determined for the basic computation plus the dilutive effect of potential common shares issuable under certain stock compensation plans. Unvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and are included in the computation of earnings per share pursuant to the two-class method. The Corporation has determined that its outstanding non-vested stock awards are participating securities. Cash and Cash Equivalents For purposes of the consolidated statement of cash flows, the Corporation defines cash and cash equivalents as cash and due from banks, interest bearing deposits with other banks, and Federal funds sold. Net cash flows are reported for customer loan and deposit transactions, interest bearing time deposits with other banks and borrowings with original maturities of 90 days or less. Restrictions on Cash The Bank is required to maintain average reserve balances with the Federal Reserve Bank or in vault cash. The average amount of these non-interest bearing reserve balances for the year ended December 31, 2018 and 2017 was $50 , which was maintained in vault cash. Note 12 to the consolidated financial statements discloses the cash collateral balances required to be maintained in connection with the Corporation’s interest rate swaps. Loss Contingencies Loss contingencies, including claims and legal actions arising in the ordinary course of business, are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. See Note 22 to the consolidated financial statements for disclosure associated with a loss contingency in connection with a sales tax notice of assessment from the Pennsylvania Department of Revenue. Fair Value of Financial Instruments Fair values of financial instruments are estimated using relevant market information and other assumptions, as more fully disclosed in a separate note. Fair value estimates involve uncertainties and matters of significant judgment regarding interest rates, credit risk, prepayments, and other factors, especially in the absence of broad markets for particular items. Changes in assumptions or in market conditions could significantly affect the estimates. Adoption of New Accounting Standards On February 14, 2018, the Financial Accounting Standard Board ("FASB") issued Accounting Standards Update ("ASU") No. 2018-02, "Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income." The amendments in this ASU allow, but do not require, entities to reclassify certain income tax effects in accumulated other comprehensive income ("AO

Business Combination and Branch

Business Combination and Branch Sale	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Business Combination and Branch Sale	Business Combination and Branch Sale On December 30, 2015, the Corporation announced the signing of a definitive merger agreement to acquire Lake National Bank ("LNB") of Mentor, Ohio for $22.50 per share in cash, or approximately $24.75 million in the aggregate. LNB served the northeastern Ohio market with two branches located in Mentor, Ohio. On July 15, 2016, the transaction closed and the Corporation began including LNB’s results of operations in its consolidated results. The two LNB offices now operate as part of the ERIEBANK division of the Bank. As disclosed in the accompanying consolidated statement of income, the Corporation incurred merger costs of $486 for the twelve months ended December 31, 2016 . All merger costs have been expensed as incurred. On May 19, 2017, the Bank completed its previously announced sale of its Mt. Hope, Ohio branch to First Federal Community Bank. The Bank transferred loans totaling $7,800 , fixed assets totaling $100 , and deposits totaling $7,400 in conjunction with the sale of the branch and realized a gain of $536 based on the 8% deposit premium paid by First Federal Community Bank.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The computation of basic and diluted earnings per share is shown below. There were no anti-dilutive stock options for the years ended December 31, 2018 , 2017 , and 2016 . Years Ended December 31, 2018 2017 2016 Basic earnings per common share computation Net income per consolidated statements of income $ 33,719 $ 23,860 $ 20,540 Net earnings allocated to participating securities (150 ) (135 ) (129 ) Net earnings allocated to common stock $ 33,569 $ 23,725 $ 20,411 Distributed earnings allocated to common stock $ 10,186 $ 10,030 $ 9,480 Undistributed earnings allocated to common stock 23,383 13,695 10,931 Net earnings allocated to common stock $ 33,569 $ 23,725 $ 20,411 Weighted average common shares outstanding, including shares considered participating securities 15,274 15,212 14,457 Less: Average participating securities (64 ) (80 ) (82 ) Weighted average shares 15,210 15,132 14,375 Basic earnings per common share $ 2.21 $ 1.57 $ 1.42 Diluted earnings per common share computation Net earnings allocated to common stock $ 33,569 $ 23,725 $ 20,411 Weighted average common shares outstanding for basic earnings per common share 15,210 15,132 14,375 Add: Dilutive effects of assumed exercises of stock options 0 0 0 Weighted average shares and dilutive potential common shares 15,210 15,132 14,375 Diluted earnings per common share $ 2.21 $ 1.57 $ 1.42

Securities

Securities	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Securities	Securities Securities available-for-sale at December 31, 2018 and 2017 are as follows: December 31, 2018 December 31, 2017 Amortized Unrealized Fair Amortized Unrealized Fair Cost Gains Losses Value Cost Gains Losses Value U.S. Gov’t sponsored entities $ 134,010 $ 254 $ (1,570 ) $ 132,694 $ 108,578 $ 478 $ (908 ) $ 108,148 State & political subdivisions 134,662 1,942 (573 ) 136,031 134,428 3,609 (314 ) 137,723 Residential & multi-family mortgage 209,126 500 (3,573 ) 206,053 111,214 304 (1,882 ) 109,636 Corporate notes & bonds 12,356 22 (601 ) 11,777 17,610 52 (462 ) 17,200 Pooled SBA 30,163 135 (924 ) 29,374 36,260 355 (575 ) 36,040 Other 1,020 0 (86 ) 934 1,020 0 (58 ) 962 Total $ 521,337 $ 2,853 $ (7,327 ) $ 516,863 $ 409,110 $ 4,798 $ (4,199 ) $ 409,709 At December 31, 2018 and 2017 , there were no holdings of securities by any one issuer, other than U.S. Government sponsored entities, in an amount greater than 10% of shareholders’ equity. The Corporation’s residential and multi-family mortgage securities are issued by government sponsored entities, and the Corporation holds one commercial mortgage security that is private label. Trading securities at December 31, 2018 and 2017 are as follows: 2018 2017 Corporate equity securities $ 5,828 $ 5,125 Mutual Funds 1,058 1,499 Certificates of deposit 268 220 Corporate notes and bonds 581 254 U.S. Government sponsored entities 51 52 Total $ 7,786 $ 7,150 Securities with unrealized losses at December 31, 2018 and 2017 , aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, are as follows: December 31, 2018 Less than 12 Months 12 Months or More Total Description of Securities Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Gov’t sponsored entities $ 14,786 $ (41 ) $ 70,676 $ (1,529 ) $ 85,462 $ (1,570 ) State & political subdivisions 13,834 (62 ) 21,080 (511 ) 34,914 (573 ) Residential & multi-family mortgage 69,015 (656 ) 87,286 (2,917 ) 156,301 (3,573 ) Corporate notes & bonds 0 0 9,759 (601 ) 9,759 (601 ) Pooled SBA 760 (7 ) 20,795 (917 ) 21,555 (924 ) Other 0 0 934 (86 ) 934 (86 ) $ 98,395 $ (766 ) $ 210,530 $ (6,561 ) $ 308,925 $ (7,327 ) December 31, 2017 Less than 12 Months 12 Months or More Total Description of Securities Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Gov’t sponsored entities 55,696 (540 ) 34,754 (368 ) 90,450 (908 ) State & political subdivisions 15,890 (69 ) 4,104 (245 ) 19,994 (314 ) Residential and multi-family mortgage 30,144 (153 ) 63,699 (1,729 ) 93,843 (1,882 ) Corporate notes & bonds 5,005 (9 ) 9,042 (453 ) 14,047 (462 ) Pooled SBA 0 0 22,270 (575 ) 22,270 (575 ) Other 0 0 962 (58 ) 962 (58 ) 106,735 (771 ) 134,831 (3,428 ) 241,566 (4,199 ) The Corporation evaluates securities for other-than-temporary impairment on a quarterly basis, or more frequently when economic or market conditions warrant such an evaluation. During 2017 , two structured pooled trust preferred securities with an adjusted amortized cost of $800 were sold, resulting in a gain of $1,383 . During 2016 , two structured pooled trust preferred securities with an adjusted amortized cost of $0 were sold, resulting in a gain of $922 . A roll-forward of the other-than-temporary impairment amount related to credit losses for the years ended December 31, 2018 , 2017 , and 2016 is as follows: 2018 2017 2016 Balance of credit losses on debt securities for which a portion of other-than-temporary impairment was recognized in earnings, beginning of period $ 0 $ 2,071 $ 4,054 Credit losses previously recognized on securities sold during the period 0 (2,071 ) (1,983 ) Additional credit loss for which other-than-temporary impairment was not previously recognized 0 0 0 Additional credit loss for which other-than-temporary impairment was previously recognized 0 0 0 Balance of credit losses on debt securities for which a portion of other-than-temporary impairment was recognized in earnings, end of period $ 0 $ 0 $ 2,071 For the securities that comprise corporate notes and bonds and the securities that are issued by state and political subdivisions, management monitors publicly available financial information, such as filings with the Securities and Exchange Commission, in order to evaluate the securities for other-than-temporary impairment. For financial institution issuers, management monitors information from quarterly “call” report filings that are used to generate Uniform Bank Performance Reports. All other securities that were in an unrealized loss position at the balance sheet date were reviewed by management, and issuer-specific documents were reviewed, as appropriate given the following considerations. When reviewing securities for other-than-temporary impairment, management considers the financial condition and near-term prospects of the issuer and whether downgrades by bond rating agencies have occurred. Management also considers the length of time and extent to which fair value has been less than cost, and whether management does not have the intent to sell these securities and it is likely that it will not be required to sell the securities before their anticipated recovery. As of December 31, 2018 and 2017 , management concluded that the securities described in the previous paragraph were not other-than-temporarily impaired for the following reasons: • There is no indication of any significant deterioration of the creditworthiness of the institutions that issued the securities. • All contractual interest payments on the securities have been received as scheduled, and no information has come to management’s attention through the processes previously described which would lead to a conclusion that future contractual payments will not be timely received. The Corporation does not intend to sell and it is not "more likely than not" that it will be required to sell the securities in an unrealized loss position before recovery of its amortized cost basis. On December 31, 2018 and 2017 , securities carried at $290,717 and $319,575 , respectively, were pledged to secure public deposits and for other purposes as provided by law. The following is a schedule of the contractual maturity of securities available for sale, excluding other securities, at December 31, 2018 : December 31, 2018 Amortized Cost Fair Value 1 year or less $ 58,509 $ 58,003 1 year – 5 years 146,605 146,111 5 years – 10 years 70,984 71,451 After 10 years 4,930 4,937 281,028 280,502 Residential and multi-family mortgage 209,126 206,053 Pooled SBA 30,163 29,374 Other 1,020 934 Total debt securities $ 521,337 $ 516,863 Mortgage securities and pooled SBA securities are not due at a single date; periodic payments are received based on the payment patterns of the underlying collateral. Information pertaining to security sales is as follows: Year ended December 31 Proceeds Gross Gains Gross Losses 2018 $ 0 $ 0 $ 0 2017 16,340 1,614 71 2016 4,420 1,005 0 The tax provision related to these net realized gains at December 31, 2018, 2017 and 2016 was $0 , $540 , and $352 , respectively. During 2018 , 2017 , and 2016 , the Corporation sold trading securities. Proceeds were $455 in 2018 , $1,091 in 2017 and $540 in 2016 , resulting in net realized gains of $151 in 2018 , $93 in 2017 , and $70 in 2016 .

Loans

Loans	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
Loans	Loans Total net loans at December 31, 2018 and 2017 are summarized as follows: 2018 2017 Commercial, industrial, and agricultural $ 916,297 $ 704,606 Commercial mortgages 697,776 644,597 Residential real estate 771,309 713,347 Consumer 86,035 80,193 Credit cards 7,623 6,753 Overdrafts 308 352 Less: unearned discount (4,791 ) (3,889 ) allowance for loan losses (19,704 ) (19,693 ) Loans, net $ 2,454,853 $ 2,126,266 At December 31, 2018 and 2017 net unamortized fees of $3,175 and $3,157 , respectively, have been included in the carrying value of loans. The Corporation’s outstanding loans and related unfunded commitments are primarily concentrated within central and northwest Pennsylvania, central and northeast Ohio, and western New York. The Bank attempts to limit concentrations within specific industries by utilizing dollar limitations to single industries or customers, and by entering into participation agreements with third parties. Collateral requirements are established based on management’s assessment of the customer. The Corporation maintains lending policies to control the quality of the loan portfolio. These policies delegate the authority to extend loans under specific guidelines and underwriting standards. These policies are prepared by the Corporation’s management and reviewed and ratified annually by the Corporation’s Board of Directors. Pursuant to the Corporation’s lending policies, management considers a variety of factors when determining whether to extend credit to a customer, including loan-to-value ratios, FICO scores, quality of the borrower’s financial statements, and the ability to obtain personal guarantees. Commercial, industrial, and agricultural loans comprised 37% and 33% of the Corporation’s total loan portfolio at December 31, 2018 and 2017 , respectively. Commercial mortgage loans comprised 28% and 30% of the Corporation’s total loan portfolio at December 31, 2018 and 2017 , respectively. Management assigns a risk rating to all commercial loans at loan origination. The loan-to-value policy guidelines for commercial, industrial, and agricultural loans are generally a maximum of 80% of the value of business equipment, a maximum of 75% of the value of accounts receivable, and a maximum of 60% of the value of business inventory at loan origination. The loan-to-value policy guideline for commercial mortgage loans is generally a maximum of 85% of the appraised value of the real estate. Residential real estate loans comprised 31% and 33% of the Corporation’s total loan portfolio at December 31, 2018 and 2017 , respectively. The loan-to-value policy guidelines for residential real estate loans vary depending on the collateral position and the specific type of loan. Higher loan-to-value terms may be approved with the appropriate private mortgage insurance coverage. The Corporation also originates and prices loans for sale into the secondary market. Loans so originated are classified as loans held for sale and are excluded from residential real estate loans reported above. The rationale for these sales is to mitigate interest rate risk associated with holding lower rate, long-term residential mortgages in the loan portfolio and to generate fee revenue from sales and servicing the loan. The Corporation also offers a variety of unsecured and secured consumer loan and credit card products which represent less than 4% of the total loan portfolio at both December 31, 2018 and 2017 . Terms and collateral requirements vary depending on the size and nature of the loan. Transactions in the allowance for loan losses for the year ended December 31, 2018 were as follows: Commercial, Industrial, and Agricultural Commercial Mortgages Residential Real Estate Consumer Credit Cards Overdrafts Total Allowance for loan losses, January 1, 2018 $ 6,160 $ 9,007 $ 2,033 $ 2,179 $ 120 $ 194 $ 19,693 Charge-offs (253 ) (3,337 ) (315 ) (2,279 ) (90 ) (319 ) (6,593 ) Recoveries 171 30 67 141 33 90 532 Provision for loan losses 1,263 1,790 371 2,336 40 272 6,072 Allowance for loan losses, December 31, 2018 $ 7,341 $ 7,490 $ 2,156 $ 2,377 $ 103 $ 237 $ 19,704 Transactions in the allowance for loan losses for the year ended December 31, 2017 were as follows: Commercial, Industrial, and Agricultural Commercial Mortgages Residential Real Estate Consumer Credit Cards Overdrafts Total Allowance for loan losses, January 1, 2017 $ 5,428 $ 6,753 $ 1,653 $ 2,215 $ 93 $ 188 $ 16,330 Charge-offs (544 ) (116 ) (466 ) (2,555 ) (144 ) (252 ) (4,077 ) Recoveries 235 197 78 161 27 87 785 Provision for loan losses 1,041 2,173 768 2,358 144 171 6,655 Allowance for loan losses, December 31, 2017 $ 6,160 $ 9,007 $ 2,033 $ 2,179 $ 120 $ 194 $ 19,693 Transactions in the allowance for loan losses for the year ended December 31, 2016 were as follows: Commercial, Industrial, and Agricultural Commercial Mortgages Residential Real Estate Consumer Credit Cards Overdrafts Total Allowance for loan losses, January 1, 2016 $ 6,035 $ 5,605 $ 2,475 $ 2,371 $ 90 $ 161 $ 16,737 Charge-offs (601 ) (201 ) (499 ) (3,324 ) (96 ) (240 ) (4,961 ) Recoveries 89 8 93 122 22 71 405 Provision for loan losses (95 ) 1,341 (416 ) 3,046 77 196 4,149 Allowance for loan losses, December 31, 2016 $ 5,428 $ 6,753 $ 1,653 $ 2,215 $ 93 $ 188 $ 16,330 The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and is based on the Corporation’s impairment method as of December 31, 2018 and 2017 . The recorded investment in loans excludes accrued interest and unearned discounts due to their insignificance. December 31, 2018 Commercial, Industrial, and Agricultural Commercial Mortgages Residential Real Estate Consumer Credit Cards Overdrafts Total Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ 54 $ 4 $ 100 $ 0 $ 0 $ 10 $ 168 Collectively evaluated for impairment 7,183 3,036 2,056 2,377 103 227 14,982 Acquired with deteriorated credit quality 0 0 0 0 0 0 0 Modified in a troubled debt restructuring 104 4,450 0 0 0 0 4,554 Total ending allowance balance $ 7,341 $ 7,490 $ 2,156 $ 2,377 $ 103 $ 237 $ 19,704 Loans: Individually evaluated for impairment $ 1,334 $ 1,446 $ 502 $ 0 $ 0 $ 10 $ 3,292 Collectively evaluated for impairment 910,386 685,714 770,807 86,035 7,623 298 2,460,863 Acquired with deteriorated credit quality 0 567 0 0 0 0 567 Modified in a troubled debt restructuring 4,577 10,049 0 0 0 0 14,626 Total ending loans balance $ 916,297 $ 697,776 $ 771,309 $ 86,035 $ 7,623 $ 308 $ 2,479,348 December 31, 2017 Commercial, Industrial, and Agricultural Commercial Mortgages Residential Real Estate Consumer Credit Cards Overdrafts Total Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ 47 $ 0 $ 0 $ 0 $ 0 $ 0 $ 47 Collectively evaluated for impairment 5,868 3,563 2,033 2,179 120 194 13,957 Acquired with deteriorated credit quality 0 0 0 0 0 0 0 Modified in a troubled debt restructuring 245 5,444 0 0 0 0 5,689 Total ending allowance balance $ 6,160 $ 9,007 $ 2,033 $ 2,179 $ 120 $ 194 $ 19,693 Loans: Individually evaluated for impairment $ 1,187 $ 51 $ 0 $ 0 $ 0 $ 0 $ 1,238 Collectively evaluated for impairment 698,206 631,377 713,347 80,193 6,753 352 2,130,228 Acquired with deteriorated credit quality 0 1,079 0 0 0 0 1,079 Modified in a troubled debt restructuring 5,213 12,090 0 0 0 0 17,303 Total ending loans balance $ 704,606 $ 644,597 $ 713,347 $ 80,193 $ 6,753 $ 352 $ 2,149,848 The following tables present information related to loans individually evaluated for impairment, including loans modified in troubled debt restructurings, by portfolio segment as of December 31, 2018 and 2017 and for the years ended December 31, 2018 , 2017 , and 2016 : December 31, 2018 Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated With an allowance recorded: Commercial, industrial, and agricultural $ 3,053 $ 3,037 $ 158 Commercial mortgage 10,799 6,709 4,454 Residential real estate 502 502 100 Overdrafts 10 10 10 With no related allowance recorded: Commercial, industrial, and agricultural 3,684 2,874 0 Commercial mortgage 5,659 4,786 0 Residential real estate 0 0 0 Overdrafts 0 0 0 Total $ 23,707 $ 17,918 $ 4,722 December 31, 2017 Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated With an allowance recorded: Commercial, industrial, and agricultural $ 1,915 $ 1,915 $ 292 Commercial mortgage 9,940 9,731 5,444 Residential real estate 0 0 0 With no related allowance recorded: Commercial, industrial, and agricultural 5,264 4,485 0 Commercial mortgage 3,211 2,410 0 Residential real estate 0 0 0 Total $ 20,330 $ 18,541 $ 5,736 The unpaid principal balance of impaired loans includes the Corporation’s recorded investment in the loan and amounts that have been charged off. Year Ended December 31, 2018 Average Recorded Investment Interest Income Recognized Cash Basis Interest Recognized With an allowance recorded: Commercial, industrial, and agricultural $ 2,745 $ 254 $ 249 Commercial mortgage 8,456 338 326 Residential real estate 304 20 19 Overdrafts 2 0 0 With no related allowance recorded: Commercial, industrial, and agricultural 4,642 157 148 Commercial mortgage 4,566 146 144 Residential real estate 0 0 0 Overdrafts 0 0 0 Total $ 20,715 $ 915 $ 886 Year Ended December 31, 2017 Average Recorded Investment Interest Income Recognized Cash Basis Interest Recognized With an allowance recorded: Commercial, industrial, and agricultural $ 1,513 $ 97 $ 97 Commercial mortgage 11,944 327 327 Residential real estate 0 0 0 With no related allowance recorded: Commercial, industrial, and agricultural 2,438 114 114 Commercial mortgage 2,474 122 122 Residential real estate 0 0 0 Total $ 18,369 $ 660 $ 660 Year Ended December 31, 2016 Average Recorded Investment Interest Income Recognized Cash Basis Interest Recognized With an allowance recorded: Commercial, industrial, and agricultural $ 2,616 $ 2 $ 2 Commercial mortgage 8,138 0 0 Residential real estate 50 6 6 With no related allowance recorded: Commercial, industrial, and agricultural 2,290 0 0 Commercial mortgage 2,773 0 0 Residential real estate 0 0 0 Total $ 15,867 $ 8 $ 8 The following table presents the recorded investment in nonaccrual loans and loans past due over 90 days still on accrual by class of loans as of December 31, 2018 and 2017 : December 31, 2018 December 31, 2017 Nonaccrual Past Due Over 90 Days Still on Accrual Nonaccrual Past Due Over 90 Days Still on Accrual Commercial, industrial, and agricultural $ 2,839 $ 489 $ 1,869 144 Commercial mortgages 7,694 53 11,065 0 Residential real estate 6,023 299 5,470 429 Consumer 683 44 828 37 Credit cards 0 5 0 54 Total $ 17,239 $ 890 $ 19,232 $ 664 Nonaccrual loans and loans past due over 90 days still on accrual include both smaller balance homogeneous loans that are collectively evaluated for impairment and individually classified impaired loans. The following table presents the aging of the recorded investment in past due loans as of December 31, 2018 and 2017 by class of loans. December 31, 2018 30-59 Days Past Due 60-89 Days Past Due Greater Than 89 Days Past Due Total Past Due Loans Not Past Due Total Commercial, industrial, and agricultural $ 2,379 $ 16 $ 2,341 $ 4,736 $ 911,561 $ 916,297 Commercial mortgages 858 3,058 297 4,213 693,563 697,776 Residential real estate 4,064 1,319 4,494 9,877 761,432 771,309 Consumer 474 283 367 1,124 84,911 86,035 Credit cards 59 15 5 79 7,544 7,623 Overdrafts 0 0 0 0 308 308 Total $ 7,834 $ 4,691 $ 7,504 $ 20,029 $ 2,459,319 $ 2,479,348 December 31, 2017 30-59 Days Past Due 60-89 Days Past Due Greater Than 89 Days Past Due Total Past Due Loans Not Past Due Total Commercial, industrial, and agricultural $ 2,745 $ 646 $ 748 $ 4,139 $ 700,467 $ 704,606 Commercial mortgages 233 0 292 525 644,072 644,597 Residential real estate 2,290 1,494 4,655 8,439 704,908 713,347 Consumer 454 307 812 1,573 78,620 80,193 Credit cards 29 2 54 85 6,668 6,753 Overdrafts 0 0 0 0 352 352 Total $ 5,751 $ 2,449 $ 6,561 $ 14,761 $ 2,135,087 $ 2,149,848 Troubled Debt Restructurings During the years ended December 31, 2018 and 2017 , the terms of certain loans were modified as troubled debt restructurings. The modification of the terms of such loans included either or both of the following: a reduction of the stated interest rate of the loan; or an extension of the maturity date at a stated rate of interest lower than the current market rate for new debt with similar risk. The following table presents the number of loans, loan balances, and specific reserves for loans that have been restructured in a troubled debt restructuring as of December 31, 2018 and December 31, 2017 . December 31, 2018 December 31, 2017 Number of Loans Loan Balance Specific Reserve Number of Loans Loan Balance Specific Reserve Commercial, industrial, and agricultural 10 $ 4,577 $ 104 11 $ 5,213 $ 245 Commercial mortgages 15 10,049 4,450 9 12,090 5,444 Residential real estate 0 0 0 0 0 0 Consumer 0 0 0 0 0 0 Credit cards 0 0 0 0 0 0 Total 25 $ 14,626 $ 4,554 20 $ 17,303 $ 5,689 The following table presents loans by class modified as troubled debt restructurings that occurred during the years ended December 31, 2018 , 2017 , and 2016 : Year Ended December 31, 2018 Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Commercial, industrial, and agricultural 0 $ 0 $ 0 Commercial mortgages 5 1,570 1,570 Residential real estate 0 0 0 Consumer 0 0 0 Credit cards 0 0 0 Total 5 $ 1,570 $ 1,570 Year Ended December 31, 2017 Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Commercial, industrial, and agricultural 4 $ 2,750 $ 2,750 Commercial mortgages 2 6,421 6,421 Residential real estate 0 0 0 Consumer 0 0 0 Credit cards 0 0 0 Total 6 $ 9,171 $ 9,171 Year Ended December 31, 2016 Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Commercial, industrial, and agricultural 1 $ 109 $ 109 Commercial mortgages 0 0 0 Residential real estate 0 0 0 Consumer 0 0 0 Credit cards 0 0 0 Total 1 $ 109 $ 109 The troubled debt restructurings described above increased the allowance for loan losses by $351 , $4,024 and $0 during the years ended December 31, 2018 , 2017 , and 2016 , respectively. Modifications involving a reduction of the stated interest rate of the loan were for periods ranging from 4 - 18 years . Modifications involving an extension of the maturity date were for periods ranging from 4 - 18 years . A loan is considered to be in payment default once it is 90 days contractually past due under the modified terms. Except as discussed below, all loans modified in troubled debt restructurings are performing in accordance with their modified terms as of December 31, 2018 and 2017 and no principal balances were forgiven in connection with the loan restructurings. During the year ended December 31, 2018 five impaired commercial real estate loans totaling $1,677 were modified in troubled debt restructurings. The Corporation recorded an additional provision for loan losses of $351 and there were no chargeoffs for these loans during the year ended December 31, 2018 . During the year ended December 31, 2018, one impaired commercial real estate loan that was modified in a troubled debt restructuring in 2017 began not to perform in accordance with its modified terms. As a result, an additional provision for loan losses of $1,847 was recorded, and the Corporation recorded a partial chargeoff of the loan of $3,336 during the year ended December 31, 2018. During the year ended December 31, 2017 four impaired commercial industrial loan having a balance of $2,750 was modified in troubled debt restructurings. The Corporation did not record any additional provision for loan losses and there were no chargeoffs or defaults for these loans during the year ended December 31, 2017 . During the year ended December 31, 2017 two impaired commercial real estate loans totaling $6,421 were modified in troubled debt restructurings. The Corporation recorded an additional provision for loan losses of $3,895 and there were no chargeoffs or defaults for these loans during the year ended December 31, 2017. During the year ended December 31, 2016 one impaired commercial industrial loan having a balance of $109 was modified in troubled debt restructurings. The Corporation did not record any additional provision for loan losses and there was no chargeoff or default for this loan during the year ended December 31, 2016 . In order to determine whether a borrower is experiencing financial difficulty, an evaluation is performed of the probability that the borrower will be in payment default on any of its debt in the foreseeable future without a loan modification. This evaluation is performed using the Corporation’s internal underwriting policies. The Corporation has no further loan commitments to customers whose loans are classified as a troubled debt restructuring. Generally, nonperforming troubled debt restructurings are restored to accrual status when the obligation is brought current, has performed in accordance with the contractual terms for a reasonable period of time (generally six months) and the ultimate collectability of the total contractual principal and interest is no longer in doubt. Credit Quality Indicators The Corporation classifies commercial, industrial, and agricultural loans and commercial mortgage loans into risk categories based on relevant information about the ability of borrowers to service their debt, such as current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. The Corporation uses the following definitions for risk ratings: Special Mention: Loans classified as special mention have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the Corporation’s credit position at some future date. Substandard: Loans classified as substandard are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the Corporation will sustain some loss if the deficiencies are not corrected. Doubtful: Loans classified as doubtful have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Loans not rated as special mention, substandard, or doubtful are considered to be pass rated loans. All loans included in the following tables have been assigned a risk rating within 12 months of the balance sheet date. December 31, 2018 Pass Special Mention Substandard Doubtful Total Commercial, industrial, and agricultural $ 889,547 $ 10,519 $ 16,231 $ 0 $ 916,297 Commercial mortgages 683,413 3,241 11,122 0 697,776 Total $ 1,572,960 $ 13,760 $ 27,353 $ 0 $ 1,614,073 December 31, 2017 Pass Special Mention Substandard Doubtful Total Commercial, industrial, and agricultural $ 668,570 $ 16,726 $ 19,310 $ 0 $ 704,606 Commercial mortgages 626,163 4,419 14,015 0 644,597 Total $ 1,294,733 $ 21,145 $ 33,325 $ 0 $ 1,349,203 The Corporation considers the performance of the loan portfolio and its impact on the allowance for loan losses. For residential real estate, consumer, and credit card loan classes, the Corporation also evaluates credit quality based on the performance status of the loan, which was previously presented, and by payment activity. Nonperforming loans include loans on nonaccrual status and loans past due over 90 days and still accruing interest. The following table presents the recorded investment in residential, consumer, and credit card loans based on performance status as of December 31, 2018 and December 31, 2017 : December 31, 2018 December 31, 2017 Residential Real Estate Consumer Credit Cards Residential Real Estate Consumer Credit Cards Performing $ 764,987 $ 85,308 $ 7,618 $ 707,448 $ 79,328 $ 6,699 Nonperforming 6,322 727 5 5,899 865 54 Total $ 771,309 $ 86,035 $ 7,623 $ 713,347 $ 80,193 $ 6,753 The Corporation’s portfolio of residential real estate and consumer loans maintained within Holiday Financial Services Corporation (“Holiday”), a subsidiary that offers small balance unsecured and secured loans, primarily collateralized by automobiles and equipment, to borrowers with higher risk characteristics than are typical in the Bank’s consumer loan portfolio, are considered to be subprime loans. Holiday’s loan portfolio, included in consumer and residential loans above, is summarized as follows at December 31, 2018 and 2017 : 2018 2017 Consumer $ 26,568 $ 23,428 Less: unearned discount (4,791 ) (3,889 ) Total $ 21,777 $ 19,539

Secondary Market Mortgage Activ

Secondary Market Mortgage Activities	12 Months Ended
	Dec. 31, 2018
Mortgage Banking [Abstract]
Secondary Market Mortgage Activities	Secondary Market Mortgage Activities The following summarizes secondary market mortgage activities for the years ended December 31, 2018 , 2017 , and 2016 : 2018 2017 2016 Loans originated for resale $ 22,990 $ 25,231 $ 31,255 Proceeds from sales of loans held for sale 23,311 24,285 33,045 Net gains on sales of loans held for sale 624 545 818 Loan servicing fees 600 563 421 Total loans serviced for others were $166,332 and $159,208 December 31, 2018 and 2017 , respectively. The following summarizes activity for capitalized mortgage servicing rights for the years ended December 31, 2018 , 2017 , and 2016 : 2018 2017 2016 Balance, beginning of year $ 1,387 $ 1,391 $ 962 Additions 315 198 200 Servicing rights acquired 0 0 367 Amortization (207 ) (202 ) (138 ) Balance, end of year $ 1,495 $ 1,387 $ 1,391 The fair value of mortgage servicing rights is based on market prices for comparable mortgage servicing contracts, when available, or alternatively based on a valuation model that calculates the present value of estimated future net servicing income. The fair value of mortgage servicing rights was not materially different than amortized cost at December 31, 2018 and 2017 , respectively. No valuation allowance was deemed necessary at December 31, 2018 , 2017 , and 2016 . The fair value of interest rate lock commitments and forward commitments to sell loans was not material at December 31, 2018 or 2017 .

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Premises and Equipment	Premises and Equipment The following summarizes premises and equipment at December 31, 2018 and 2017 : 2018 2017 Land $ 8,301 $ 8,147 Premises and leasehold improvements 52,810 53,903 Furniture and equipment 27,548 31,238 Construction in process 1,283 71 89,942 93,359 Less: accumulated depreciation 40,022 42,644 Premises and equipment, net $ 49,920 $ 50,715 Depreciation on premises and equipment amounted to $3,706 in 2018, $3,811 in 2017 and $3,215 in 2016 . The Corporation is committed under twenty-eight non-cancelable operating leases for facilities and six non-cancelable operating leases for vehicles and equipment with initial or remaining terms in excess of one year. The minimum annual rental commitments under these leases at December 31, 2018 are as follows: 2019 $ 1,514 2020 1,513 2021 1,528 2022 1,567 2023 1,502 Thereafter 18,538 $ 26,162 Rental expense, net of rental income, charged to occupancy expense for 2018 , 2017 , and 2016 was $932 , $870 and $773 , respectively. In December 2009, the Corporation entered into a sale-leaseback transaction for real estate used in the operations of one of its branch office locations. The lease term is seventeen years , with two automatic renewal terms of five years each. The Corporation sold the property for $1,200 but financed the entire sales amount. Because the buyer/lessor did not make an initial investment on the purchase of the real estate that is adequate to transfer the risks and rewards of ownership, the Corporation deferred the entire gain of $489 associated with this transaction, which is included in accrued interest payable and other liabilities in the accompanying consolidated balance sheet. The gain is being recognized over the term of the loan under the installment method, and the gain recognized was included in other income in the accompanying consolidated statements of income and comprehensive income and totaled $26 , $25 and $25 in 2018 , 2017 , and 2016 , respectively. The minimum annual rental commitments under this sale-leaseback transaction at December 31, 2018 are as follows: 2019 $ 105 2020 105 2021 105 2022 105 2023 105 Thereafter 315 $ 840

Foreclosed Assets

Foreclosed Assets	12 Months Ended
	Dec. 31, 2018
Real Estate [Abstract]
Foreclosed Assets	Foreclosed Assets Foreclosed real estate is reported net of a valuation allowance and included in accrued interest receivable and other assets in the accompanying consolidated balance sheets. Activity for the years ended December 31, 2018 , 2017 , and 2016 is as follows: 2018 2017 2016 Balance, beginning of year $ 710 $ 1,015 $ 654 Acquired from Lake National Bank 0 0 665 Additions 228 630 120 Sales (at carrying value) (520 ) (935 ) (424 ) Balance, end of year $ 418 $ 710 $ 1,015 Expenses related to foreclosed real estate include: 2018 2017 2016 Net gain on sale $ (310 ) $ (208 ) $ (134 ) Operating expenses, net of rental income 283 366 223 $ (27 ) $ 158 $ 89

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill The change in the carrying amount of goodwill for the years ended December 31, 2018 and 2017 is as follows: 2018 2017 Balance, beginning of year $ 38,730 $ 38,730 Acquired during the year 0 0 Balance, end of year $ 38,730 $ 38,730 Impairment exists when a reporting unit’s carrying value of goodwill exceeds its fair value, which is determined through a two-step impairment test. Step 1 includes the determination of the carrying value of our single reporting unit, including the existing goodwill and intangible assets, and estimating the fair value of the reporting unit. We determined the fair value of our reporting unit exceeded its carrying amount. If the carrying amount of the reporting unit exceeds its fair value, we are required to perform a second step to the impairment test. Our annual impairment analysis at December 31, 2018 and 2017 indicated that the Step 2 analysis was not necessary. Intangible Assets In connection with its acquisition of FC Banc Corp. in 2013, the Corporation recorded a core deposit intangible asset of $4,834 . During the years ended December 31, 2018 , 2017 , and 2016 , the Corporation recorded amortization expense of $489 , $662 and $835 , respectively. The net carrying values at December 31, 2018 and December 31, 2017 were $410 and $899 , respectively. No other intangible assets were required to be recorded in connection with the acquisition of FC Banc Corp. In connection with its acquisition of Lake National Bank in 2016, the Corporation recorded a core deposit intangible asset of $1,583 . During the year ended December 31, 2018 , 2017 , and 2016 , the Corporation recorded amortization expense of $409 , $567 , and $290 , respectively. The net carrying values at December 31, 2018 and 2017 were $317 and $726 , respectively. No other intangible assets were required to be recorded in connection with the acquisition of Lake National Bank. The estimated remaining amortization expense of core deposit intangible assets is as follows: 2019 $ 567 2020 160

Deposits

Deposits	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Deposits	Deposits The following table reflects time certificates of deposit accounts included in total deposits and their remaining maturities at December 31, 2018 : Time deposits maturing: 2019 $ 155,670 2020 100,360 2021 62,480 2022 62,204 2023 6,814 Thereafter 7,909 $ 395,437 Certificates of deposit of $250 or more totaled $105,626 and $108,992 at December 31, 2018 and 2017 , respectively. The Corporation had $3,219 and $3,535 in reciprocal brokered deposits at December 31, 2018 and 2017 .

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Borrowings	Borrowings At December 31, 2018 and 2017 , the Corporation had available one $10 million unsecured line of credit with an unaffiliated institution, at a variable interest rate with a floor as defined in the agreement. There were no borrowings on the line of credit at December 31, 2018 and 2017 . FHLB Borrowings At December 31, 2018 , the Bank had remaining borrowing capacity with the FHLB of $317,570 . At December 31, 2018 , borrowings with the FHLB are secured by a pledge of certain loans with a balance of $769,316 . At December 31, 2018 and 2017 , advances from the FHLB are as follows: 2018 2017 Maturities range from 6/28/2019 through 2/11/2033; rates fixed at a range of 1.17% to 5.24%; weighted average rate is 2.06% as of December 31, 2018. Maturities range from 9/6/2018 through 2/11/2033; rates fixed at a range of 1.05% to 5.24%; weighted average rate is 1.81% as of December 31, 2017. $ 245,117 $ 222,943 Open Repo borrowing at an interest rate of 1.54% at December 31, 2017. The maximum amount of the Open Repo borrowing available is $150,000. 0 34,416 Total $ 245,117 $ 257,359 Each advance is payable at its maturity date, with a prepayment penalty for fixed rate advances. Other Borrowings At December 31, 2018 and 2017 , the Bank had no outstanding borrowings from unaffiliated institutions under overnight borrowing agreements. Subordinated Debentures In 2007, the Corporation issued two $10,000 floating rate trust preferred securities as part of a pooled offering of such securities. The interest rate on each offering is determined quarterly and floats based on the 3 month LIBOR plus 1.55% and was 4.36% at December 31, 2018 and 3.24% at December 31, 2017 . The Corporation issued subordinated debentures to the trusts in exchange for the proceeds of the offerings, which debentures represent the sole assets of the trusts. The subordinated debentures must be redeemed no later than 2037 . The Corporation may redeem the debentures, in whole or in part, at face value at any time. The Corporation has the option to defer interest payments from time to time for a period not to exceed five consecutive years. Although the trusts are variable interest entities, the Corporation is not the primary beneficiary. As a result, because the trusts are not consolidated with the Corporation, the Corporation does not report the securities issued by the trusts as liabilities. Instead, the Corporation reports as liabilities the subordinated debentures issued by the Corporation and held by the trusts, since the liabilities are not eliminated in consolidation. In September 2016, the Corporation completed a private placement of $50,000 in aggregate principal amount of fixed-to-floating rate subordinated notes. The notes will mature in October 2026, and will initially bear interest at a fixed rate of 5.75% per annum, payable semi-annually in arrears, to, but excluding, October 15, 2021, and thereafter to, but excluding, the maturity date or earlier redemption, the interest rate shall reset quarterly to an interest rate per annum equal to the then current three-month LIBOR rate plus 4.55% . These subordinated notes were designed to qualify as Tier 2 capital under the Federal Reserve’s capital guidelines and were given an investment grade rating of BBB- by Kroll Bond Rating Agency. Maturity Schedule of All Borrowed Funds The following is a schedule of maturities of all borrowed funds as of December 31, 2018 : 2019 $ 47,562 2020 37,505 2021 33,740 2022 72,931 2023 51,244 Thereafter 72,755 Total borrowed funds $ 315,737

Interest Rate Swaps

Interest Rate Swaps	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Interest Rate Swaps	Interest Rate Swaps On September 7, 2018, the Corporation executed an interest rate swap agreement with a 5 -year term and an effective date of September 15, 2018 in order to hedge cash flows associated with $10 million of a subordinated note that was issued by the Corporation during 2007 and elected cash flow hedge accounting for the agreement. The Corporation’s objective in using this derivative is to add stability to interest expense and to manage its exposure to interest rate risk. The interest rate swap involves the receipt of variable-rate amounts in exchange for fixed-rate payments from September 15, 2018 to September 15, 2023 without the exchange of the underlying notional amount. At December 31, 2018 , the variable rate on the subordinated debt was 4.36% (LIBOR plus 155 basis points) and the Corporation was paying 4.53% ( 2.98% fixed rate plus 155 basis points). On May 3, 2011 , the Corporation executed an interest rate swap agreement with a 5 -year term and an effective date of September 15, 2013 and expired September 2018, in order to hedge cash flows associated with $10 million of a subordinated note discussed above. The Corporation’s objective in using this derivative was to add stability to interest expense and to manage its exposure to interest rate risk. The interest rate swap involved the receipt of variable-rate amounts in exchange for fixed-rate payments from September 15, 2013 to September 15, 2018 without exchange of the underlying notional amount. As of December 31, 2018 and 2017 , no derivatives were designated as fair value hedges or hedges of net investments in foreign operations. Additionally, the Corporation does not use derivatives for trading or speculative purposes and currently does not have any derivatives that are not designated as hedges. The following tables provide information about the amounts and locations of activity related to the interest rate swaps designated as cash flow hedges within the Corporation’s consolidated balance sheet and statement of income as of December 31, 2018 and 2017 and for the years ended December 31, 2018 , 2017 , and 2016 : As of December 31 Liability Derivative Balance Sheet Fair value Location 2018 2017 Interest rate contract Accrued interest payable and other liabilities $(201) $(161) For the Year Ended December 31, 2018 (a) (b) (c) (d) (e) Interest rate contract $(32) Interest expense – subordinated debentures $(164) Other $0 For the Year Ended December 31, 2017 Interest rate contract $194 Interest expense – subordinated $(288) Other $0 For the Year Ended December 31, 2016 Interest rate contract $180 Interest expense – subordinated debentures $(340) Other $0 (a) Amount of Gain or (Loss) Recognized in Other Comprehensive Loss on Derivative (Effective Portion), net of tax (b) Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income (Effective Portion) (c) Amount of Loss Reclassified from Accumulated Other Comprehensive Loss into Income (Effective Portion) (d) Location of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing) (e) Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing) Amounts reported in accumulated other comprehensive loss related to the interest rate swap will be reclassified to interest expense as interest payments are made on the subordinated debentures. Such amounts reclassified from accumulated other comprehensive loss to interest expense in the next twelve months are expected to be $17 . As of December 31, 2018 and 2017 , a cash collateral balance of $200 and $1,400 , respectively, was maintained with the counterparty to the interest rate swaps. These balances are included in interest bearing deposits with other banks on the consolidated balance sheets. The Corporation entered into certain interest rate swap contracts that are not designated as hedging instruments. These derivative contracts relate to transactions in which the Corporation enters into an interest rate swap with a customer while at the same time entering into an offsetting interest rate swap with another financial institution. In connection with each swap transaction, the Corporation agrees to pay interest to the customer on a notional amount at a variable interest rate and receive interest from the customer on a similar notional amount at a fixed interest rate. Concurrently, the Corporation 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 Corporation’s customers to effectively convert a variable rate loan to a fixed rate. Because the Corporation acts as an intermediary for its customer, changes in the fair value of the underlying derivative contracts offset each other and do not impact the Corporation’s results of operations. The following table provides information about the amounts and locations of activity related to the back-to-back interest rate swaps within the Corporation’s consolidated balance sheet as of December 31, 2018 and 2017 : Notional Amount Average Maturity (in years) Weighted Average Fixed Rate Weighted Average Variable Rate Fair Value December 31, 2018 3 rd Party interest rate swaps $ 23,152 7.2 3.85 % 1 month LIBOR + 2.24% 485 (a) Customer interest rate swaps (23,152 ) 7.2 3.85 % 1 month LIBOR + 2.24% (485) (b) December 31, 2017 3 rd Party interest rate swaps $ 11,848 8.0 4.51 % 1 month LIBOR + 2.37% 149 (a) Customer interest rate swaps (11,848 ) 8.0 4.51 % 1 month LIBOR + 2.37% (149) (b) (a) Reported in accrued interest receivable and other assets within the consolidated balance sheets (b) Reported in accrued interest payable and other liabilities within the consolidated balance sheets

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The following is a summary of income tax expense for the years ended December 31, 2018 , 2017 , and 2016 : 2018 2017 2016 Current – federal $ 7,520 $ 8,978 $ 6,181 Current – state 66 29 (33 ) Deferred – federal (1,076 ) 376 1,023 Deferred tax adjustment related to reduction in U.S. federal statutory income tax rate 0 3,009 0 Income tax expense $ 6,510 $ 12,392 $ 7,171 The reconciliation of income tax attributable to pre-tax income at the federal statutory tax rates to income tax expense is as follows: 2018 % 2017 % 2016 % Tax at statutory rate $ 8,448 21.0 $ 12,688 35.0 $ 9,699 35.0 Tax exempt income, net (1,403 ) (3.5 ) (1,899 ) (5.2 ) (2,054 ) (7.4 ) Deferred tax adjustment related to reduction in U.S. federal statutory income tax rate 0 0.0 3,009 8.3 0 0.0 Bank owned life insurance (296 ) (0.7 ) (581 ) (1.6 ) (379 ) (1.3 ) Merger costs 0 0.0 0 0.0 170 0.6 Other (239 ) (0.6 ) (825 ) (2.3 ) (265 ) (1.0 ) Income tax expense $ 6,510 16.2 $ 12,392 34.2 $ 7,171 25.9 Income tax expense for the year ended December 31, 2017 was impacted by the adjustment of our deferred tax assets and liabilities related to the reduction in the U.S. federal statutory income tax rate to 21% under the Tax Cuts and Jobs Act of 2017, which was enacted on December 22, 2017. Accordingly, the Corporation recognized additional tax expense totaling $3,009 in 2017, as detailed in the table above. The following table sets forth deferred taxes as of December 31, 2018 and 2017. As a result of the Tax Cuts and Jobs Act (discussed below), deferred taxes as of December 31, 2018 and 2017 are based on the enacted U.S. statutory federal income tax rate of 21% . 2018 2017 Deferred tax assets: Allowance for loan losses $ 3,088 $ 2,840 Fair value adjustments – business combination 966 1,135 Deferred compensation 2,056 1,903 Net operating loss carryover 0 71 Post-retirement benefits 836 892 Unrealized loss on interest rate swap 42 34 Nonaccrual loan interest 589 390 Accrued expenses 1,254 699 Deferred fees and costs 588 598 Unrealized loss on securities available for sale 940 0 Other 366 344 10,725 8,906 Deferred tax liabilities: Unrealized gain on securities available for sale 0 126 Premises and equipment 1,459 1,413 Unrealized gain on trading securities 63 156 Intangibles – section 197 2,414 2,593 Mortgage servicing rights 314 291 Other 178 78 4,428 4,657 Net deferred tax asset $ 6,297 $ 4,249 At December 31, 2018 and 2017 , the Corporation had no unrecognized tax benefits. The Corporation does not expect the total amount of unrecognized tax benefits to significantly increase in the next twelve months. The Corporation recognizes interest and/or penalties related to income tax matters as part of income tax expense. At December 31, 2018 and 2017 , there were no amounts accrued for interest and/or penalties and no amounts recorded as expense for the years ending December 31, 2018 , 2017 , and 2016 . The Corporation and its subsidiaries are subject to U.S. federal income tax, as well as various filing various state returns. The Corporation is no longer subject to examination by the taxing authorities for years prior to 2015. Tax years 2015 through 2018 are open to examination. The Tax Cuts and Jobs Act was enacted on December 22, 2017. Among other things, the new law (i) establishes a new, flat corporate federal statutory income tax rate of 21% , (ii) eliminates the corporate alternative minimum tax and allows the use of any such carryforwards to offset regular tax liability for any taxable year, (iii) limits the deduction for net interest expense incurred by U.S. corporations, (iv) allows businesses to immediately expense, for tax purposes, the cost of new investments in certain qualified depreciable assets, (v) eliminates or reduces certain deductions related to meals and entertainment expenses, (vi) modifies the limitation on excessive employee remuneration to eliminate the exception for performance-based compensation and clarifies the definition of a covered employee and (vii) limits the deductibility of deposit insurance premiums. The Tax Cuts and Jobs Act also significantly changes U.S. tax law related to foreign operations, however, such changes do not currently impact the Corporation.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Employee Benefit Plans	Employee Benefit Plans The Corporation sponsors a contributory defined contribution Section 401(k) plan in which substantially all employees participate. The plan permits employees to make pre-tax contributions which are matched by the Corporation at 100% for every 1% contributed up to 3% then 50% for every 1% contributed up to the next 2% in total of the employee’s compensation. The Corporation’s matching contribution and related expenses were $810 , $802 and $652 in 2018 , 2017 , and 2016 , respectively. Profit sharing contributions to this plan, based on current year compensation, are 6.0% of total compensation plus 5.7% of the compensation in excess of $128 . The Corporation recognized profit sharing expense of $1,530 , $1,755 and $1,276 in 2018 , 2017 , and 2016 respectively. The Corporation has adopted a non-qualified supplemental executive retirement plan (“SERP”) for certain executives to compensate those executive participants in the Corporation’s retirement plan whose benefits are limited by compensation limitations under current tax law. The SERP is considered an unfunded plan for tax and ERISA purposes and all obligations arising under the SERP are payable from the general assets of the Corporation. At December 31, 2018 and 2017 , obligations of $5,867 and $5,349 , respectively, were included in other liabilities for this plan. Expenses related to this plan were $776 in 2018 , $648 in 2017 and $550 in 2016 . The Corporation has established a Survivor Benefit Plan for the benefit of outside directors. The purpose of the plan is to provide life insurance benefits to beneficiaries of the Corporation’s directors who at the time of their death are participants in the plan. The plan is considered an unfunded plan for tax and ERISA purposes and all obligations arising under the plan are payable from the general assets of the Corporation. At December 31, 2018 and 2017 , obligations of $1,330 and $1,264 , respectively, were included in other liabilities for this plan. Expenses related to this plan were $66 in 2018 , $89 in 2017 and $33 in 2016 . The Corporation has an unfunded post retirement benefits plan which provides certain health care benefits for retired employees who have reached the age of 60 and retired with 30 years of service. The plan was amended in 2013 to include only employees hired prior to January 1, 2000. Benefits are provided for these retired employees and their qualifying dependents from the age of 60 through the age of 65 . The following table sets forth the change in the benefit obligation of the plan as of and for the years ended December 31, 2018 , 2017 , and 2016 : 2018 2017 2016 Benefit obligation at beginning of year $ 2,740 $ 3,409 $ 3,066 Interest cost 83 114 108 Service cost 87 103 103 Actual claims (79 ) (78 ) (151 ) Actuarial (gain) loss (404 ) (808 ) 283 Benefit obligation at end of year $ 2,427 $ 2,740 $ 3,409 Amounts recognized in accumulated other comprehensive income at December 31, 2018 and 2017 consist of: 2018 2017 Net actuarial loss $ (383 ) $ (871 ) Tax effect 79 183 $ (304 ) $ (688 ) The accumulated benefit obligation was $2,427 and $2,740 at December 31, 2018 and 2017 , respectively. The following table sets forth the components of net periodic benefit cost and other amounts recognized in other comprehensive income: 2018 2017 2016 Service cost $ 87 $ 103 $ 103 Interest cost 83 114 108 Net amortization of transition obligation and actuarial loss 84 192 184 Net periodic benefit cost 254 409 395 Net (gain) loss (404 ) (808 ) 282 Amortization of loss (84 ) (192 ) (184 ) Total recognized in other comprehensive income (488 ) (1,000 ) 98 Total recognized in net periodic benefit cost and other comprehensive income $ (234 ) $ (591 ) $ 493 The estimated net loss that will be amortized from accumulated other comprehensive income into net periodic benefit cost over the next fiscal year is $23 . The weighted average discount rate used to calculate net periodic benefit cost was 3.13% in 2018 , 3.49% in 2017 , and 3.67% in 2016 . The weighted average rate used to calculate accrued benefit obligations was 3.78% in 2018 , 3.13% in 2017 , and 3.49% in 2016 . The health care cost trend rate used to measure the expected costs of benefits is 5.0% for 2019 and thereafter. A one percent increase in the health care trend rates would result in an increase of $182 in the benefit obligation as of December 31, 2018 , and would increase the service and interest costs by $14 in future periods. A similar one percent decrease in health care trend rates would result in a decrease of $165 and $13 in the benefit obligation and services and interest costs, respectively, at December 31, 2018 .

Deferred Compensation Plans

Deferred Compensation Plans	12 Months Ended
	Dec. 31, 2018
Postemployment Benefits [Abstract]
Deferred Compensation Plans	Deferred Compensation Plans Deferred compensation plans cover all directors and certain officers. Under the plans, the Corporation pays each participant, or their beneficiary, the value of the participant’s account over a maximum period of 10 years , beginning with the individual’s termination of service. A liability is accrued for the obligation under these plans. A summary of changes in the deferred compensation plan liability follows: 2018 2017 2016 Balance, beginning of year $ 2,503 $ 2,080 $ 1,226 Deferrals, dividends, and changes in fair value recorded as an expense 64 444 936 Deferred compensation payments (159 ) (21 ) (82 ) Balance, end of year $ 2,408 $ 2,503 $ 2,080

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation A summary of changes in nonvested restricted stock awards follows: Shares Weighted-average Grant Date Fair Value Nonvested at January 1, 2018 94,472 $ 20.79 Granted 24,508 26.92 Forfeited (361 ) 26.19 Vested (42,730 ) 19.87 Nonvested at December 31, 2018 75,889 $ 23.20 The above table excludes 15,600 shares in restricted stock awards that were granted at a weighted average fair value of $27.16 and immediately vested. As of December 31, 2018 and 2017 , there was $775 and $1,243 , respectively, of total unrecognized compensation cost related to nonvested shares granted under the restricted stock award plan. The fair value of shares vesting during 2018 , 2017 , and 2016 was $1,535 , $1,035 and $624 , respectively. Compensation expense for restricted stock awards was $1,545 in 2018 , $928 in 2017 and $820 in 2016 . The number of authorized stock-based awards still available for grant as of December 31, 2018 was 159,224 . In addition to the time-based restricted stock disclosed above, the Corporation’s Board of Directors grants performance-based restricted stock awards (“PBRSAs”) to key employees. The number of PBRSAs will depend on certain performance conditions and are also subject to service-based vesting. In 2018 , awards with a maximum of 10,468 shares in aggregate were granted to key employees. In 2017 , an award with a maximum of 5,306 shares was granted to a key employee.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions In the ordinary course of business, the Bank has transactions, including loans and credit cards, with its officers, directors, and their affiliated companies. The aggregate of such loans and credit cards totaled $8,596 on December 31, 2018 compared to $5,331 on December 31, 2017 . During 2018 , $18,020 in new loans were made, $26 were added for the net change in outstanding credit card balances, and repayments totaled $14,781 . Deposits from principal officers, directors, and their affiliates were $9,619 and $11,982 at December 31, 2018 and 2017 , respectively.

Capital Requirements and Restri

Capital Requirements and Restrictions on Retained Earnings	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Capital Requirements and Restrictions on Retained Earnings	Capital Requirements and Restrictions on Retained Earnings Banks and financial holding companies are subject to regulatory capital requirements administered by federal banking agencies. Capital adequacy guidelines and, for the Bank, prompt corrective action ("PCA") regulations involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators. Failure to meet capital requirements can result in regulatory enforcement actions. Under the Basel III rules, the Corporation and the Bank must hold a capital conservation buffer above the adequately capitalized risk-based capital ratios. The capital conservation buffer is being phased in from 0.0% for 2015 to 2.50% by 2019. The capital conservation buffer for 2018 was 1.875% and for 2017 was 1.25% . The final rules implementing Basel Committee on Banking Supervision’s capital guidelines for U.S. banks (Basel III rules) became effective for the Corporation on January 1, 2015 with full compliance with all of the requirements being phased in over a multi-year schedule, and fully phased in by January 1, 2019. The net unrealized gain or loss on available for sale securities are excluded from computing regulatory capital. Management believes as of December 31, 2018 the Corporation and the Bank meet all capital adequacy requirements to which they are subject. The PCA regulations provide five capital categories: well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized, although these terms alone do not represent overall financial condition. If adequately capitalized, regulatory approval is required to accept brokered deposits. If undercapitalized, capital distributions are limited, as is asset growth and expansion; brokered deposits may not be accepted, renewed or rolled over; and capital restoration plans are required. As of December 31, 2018 and 2017 , the most recent regulatory notifications categorized the Bank as well capitalized under the PCA regulatory framework. There are no events or conditions since this notification that management believes have changed the Bank’s capital category. Actual and required capital amounts and ratios are presented below as of December 31, 2018 and 2017 . The capital adequacy ratio includes the capital conservation buffer. Actual For Capital Adequacy Purposes To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio December 31, 2018 Total Capital to Risk Weighted Assets Consolidated $ 319,340 13.21 % $ 238,719 9.875 % N/A Bank $ 302,627 12.59 % $ 237,325 9.875 % $ 240,329 10.00 % Tier 1 (Core) Capital to Risk Weighted Assets Consolidated $ 249,636 10.33 % $ 190,371 7.875 % N/A Bank $ 284,722 11.85 % $ 189,259 7.875 % $ 192,263 8.00 % Common equity Tier 1 to Risk Weighted Assets Consolidated $ 229,636 9.50 % $ 154,110 6.375 % N/A Bank $ 277,343 11.54 % $ 153,210 6.375 % $ 156,214 6.50 % Tier 1 (Core) Capital to Average Assets Consolidated $ 249,636 7.87 % $ 126,882 4.00 % N/A Bank $ 284,722 9.12 % $ 124,903 4.00 % $ 156,128 5.00 % December 31, 2017 Total Capital to Risk Weighted Assets Consolidated $ 297,708 14.32 % $ 192,341 9.25 % N/A Bank $ 279,704 13.58 % $ 190,513 9.25 % $ 205,960 10.00 % Tier 1 (Core) Capital to Risk Weighted Assets Consolidated $ 228,015 10.97 % $ 150,754 7.25 % N/A Bank $ 261,643 12.70 % $ 149,321 7.25 % $ 164,768 8.00 % Common equity Tier 1 to Risk Weighted Assets Consolidated $ 208,015 10.00 % $ 119,563 5.75 % N/A Bank $ 254,264 12.35 % $ 118,427 5.75 % $ 133,874 6.50 % Tier 1 (Core) Capital to Average Assets Consolidated $ 228,015 8.45 % $ 107,969 4.00 % N/A Bank $ 261,643 9.80 % $ 106,798 4.00 % $ 133,498 5.00 % Certain restrictions exist regarding the ability of the Bank to transfer funds to the Corporation in the form of cash dividends, loans or advances. During 2019, $41,463 of accumulated net earnings of the Bank included in consolidated stockholders’ equity, plus any 2019 net profits retained to the date of the dividend declared, is available for distribution to the Corporation as dividends without prior regulatory approval, subject to regulatory capital requirements described above.

Off-Balance Sheet Activities

Off-Balance Sheet Activities	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Off-Balance Sheet Activities	Off-Balance Sheet Activities Some financial instruments, such as loan commitments, credit lines, letters of credit, and overdraft protection, are issued to meet customer financing needs. These are agreements to provide credit or to support the credit of others, as long as conditions established in the contract are met, and usually have expiration dates. Commitments may expire without being used. Off-balance sheet risk to credit loss exists up to the face amount of these instruments, although material losses are not anticipated. The same credit policies are used to make such commitments as are used for loans, including obtaining collateral at exercise of the commitment. The contractual amount of financial instruments with off-balance sheet risk was as follows at December 31, 2018 and 2017 : 2018 2017 Fixed Rate Variable Rate Fixed Rate Variable Rate Commitments to make loans $ 46,265 $ 191,803 $ 46,701 $ 196,449 Unused lines of credit 14,390 429,456 14,565 373,618 Standby letters of credit 14,831 1,479 13,706 1,524 Commitments to make loans are generally made for periods of 60 days or less . The fixed rate loan commitments at December 31, 2018 have interest rates ranging from 2.45% to 18.00% and maturities ranging from one year to 35 years . The fixed rate loan commitments at December 31, 2017 have interest rates ranging from 1.00% to 18.00% and maturities ranging from eight months to 35 years . The Corporation makes investments in limited partnerships, including certain small business investment corporations and low income housing partnerships. As of December 31, 2018 and 2017, unfunded capital commitments totaled $3,905 and $3,500 , respectively for the small business investment corporations and $1,434 and $2,468 for the low income housing partnerships, respectively. At December 31, 2018 and 2017, capital contributions to the small business investment corporations were $6,595 and $4,500 , respectively and capital contributions to the low income housing partnerships were $4,566 and $3,532 , respectively.

Fair Value

Fair Value	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Fair Value Measurement Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. A fair value hierarchy has also been established which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The following three levels of inputs are used to measure fair value: Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. Level 2: Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. Level 3: Significant unobservable inputs that reflect a company’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. The fair values of most trading securities and securities available for sale are determined by obtaining quoted prices on nationally recognized securities exchanges (Level 1 inputs) or matrix pricing, which is a mathematical technique widely used in the industry to value debt securities without relying exclusively on quoted prices for the specific securities but rather relying on the securities’ relationship to other benchmark quoted securities (Level 2 inputs). The Corporation’s derivative instruments are interest rate swaps that are similar to those that trade in liquid markets. As such, significant fair value inputs can generally be verified and do not typically involve significant management judgments (Level 2 inputs). The fair value of impaired loans with specific allocations of the allowance for loan losses is generally based on recent real estate appraisals prepared by third-parties. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are routinely made in the appraisal process by the appraisers to adjust for differences between the comparable sales and income data available. Management also adjusts appraised values based on the length of time that has passed since the appraisal date and other factors. Such adjustments are usually significant and typically result in a Level 3 classification of the inputs for determining fair value. Assets and liabilities measured at fair value on a recurring basis are as follows at December 31, 2018 and 2017 : Fair Value Measurements at December 31, 2018 Using Description Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Securities Available For Sale: U.S. Government sponsored entities $ 132,694 $ 0 $ 132,694 $ 0 States and political subdivisions 136,031 0 136,031 0 Residential and multi-family mortgage 206,053 0 206,053 0 Corporate notes and bonds 11,777 0 11,777 0 Pooled SBA 29,374 0 29,374 0 Other 934 934 0 0 Total Securities Available For Sale $ 516,863 $ 934 $ 515,929 $ 0 Interest rate swaps $ 485 $ 0 $ 485 $ 0 Trading Securities: Corporate equity securities $ 5,828 $ 5,828 $ 0 $ 0 Mutual funds 1,058 1,058 0 0 Certificates of deposit 268 268 0 0 Corporate notes and bonds 581 581 0 0 U.S. Government sponsored entities 51 0 51 0 Total Trading Securities $ 7,786 $ 7,735 $ 51 $ 0 Liabilities Interest rate swaps $ (686 ) $ 0 $ (686 ) $ 0 Fair Value Measurements at December 31, 2017 Using Description Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Securities Available For Sale: U.S. Government sponsored entities $ 108,148 $ 0 $ 108,148 $ 0 States and political subdivisions 137,723 0 137,723 0 Residential and multi-family mortgage 109,636 0 109,636 0 Corporate notes and bonds 17,200 0 17,200 0 Pooled SBA 36,040 0 36,040 0 Other 962 962 0 0 Total Securities Available For Sale $ 409,709 $ 962 $ 408,747 $ 0 Interest rate swaps $ 149 $ 0 $ 149 $ 0 Trading Securities: Corporate equity securities $ 5,125 $ 5,125 $ 0 $ 0 Mutual funds 1,499 1,499 0 0 Certificates of deposit 220 220 0 0 Corporate notes and bonds 254 254 0 0 U.S. Government sponsored entities 52 0 52 0 Total Trading Securities $ 7,150 $ 7,098 $ 52 $ 0 Liabilities Interest rate swaps $ (310 ) $ 0 $ (310 ) $ 0 The table below presents a reconciliation of the fair value of securities available for sale measured on a recurring basis using significant unobservable inputs (Level 3) for the year ended December 31, 2017 : Pooled trust preferred Balance, January 1, 2017 $ 2,049 Total gains or (losses): Included in other comprehensive income (loss) 134 Sale of available-for-sale securities (2,183 ) Balance, December 31, 2017 $ 0 There were no Level 3 financial instruments carried at fair value on a recurring basis at December 31, 2018 . Assets and liabilities measured at fair value on a non-recurring basis are as follows at December 31, 2018 and 2017 : Fair Value Measurements at December 31, 2018 Using Description Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Impaired loans: Commercial, industrial, and agricultural $ 783 0 0 $ 783 Commercial mortgages $ 224 0 0 $ 224 Fair Value Measurements at December 31, 2017 Using Description Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Impaired loans: Commercial mortgages $ 11 0 0 $ 11 Impaired loans measured for impairment using the fair value of collateral for collateral dependent loans had a recorded investment of $2,124 , with a valuation allowance of $1,117 as of December 31, 2018 , resulting in an additional provision for loan losses of $483 for the year then ended. Impaired loans measured for impairment using the fair value of collateral for collateral dependent loans had a recorded investment of $646 , with a valuation allowance of $635 as of December 31, 2017 , resulting in an additional benefit for loan losses of $(418) for the year then ended. The estimated fair values of impaired collateral dependent loans such as commercial or residential mortgages are determined primarily through third-party appraisals. When a collateral dependent loan, such as a commercial or residential mortgage loan, becomes impaired, a decision is made regarding whether an updated certified appraisal of the real estate is necessary. This decision is based on various considerations, including the age of the most recent appraisal, the loan-to-value ratio based on the original appraisal, and the condition of the property. Appraised values are discounted to arrive at the estimated selling price of the collateral and a further reduction for estimated costs to sell the property is applied, which results in an amount that is considered to be the estimated fair value. If a loan becomes impaired and the appraisal of related loan collateral is outdated, management applies an appropriate adjustment factor based on its experience with current valuations of similar collateral in determining the loan’s estimated fair value and resulting allowance for loan losses. Third-party appraisals are not customarily obtained in respect of unimpaired loans, unless in management’s view changes in circumstances warrant obtaining an updated appraisal. The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at December 31, 2018 : Fair value Valuation Technique Unobservable Inputs Range (Weighted Average) Impaired loans – commercial, industrial, and agricultural $783 Valuation of third party appraisal on underlying collateral Loss severity rates 55%-60% (57%) Impaired loans – commercial mortgages $224 Valuation of third party appraisal on underlying collateral Loss severity rates 15%-39% (37%) The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at December 31, 2017 : Fair value Valuation Technique Unobservable Inputs Range (Weighted Average) Impaired loans – commercial mortgages $11 Valuation of third party appraisal on underlying collateral Loss severity rates 10% (10%) Fair Value of Financial Instruments The following table presents the carrying amount and fair value of financial instruments at December 31, 2018 : Carrying Amount Fair Value Measurement Using: Total Fair Value Level 1 Level 2 Level 3 ASSETS Cash and cash equivalents $ 45,563 $ 45,563 $ 0 $ 0 $ 45,563 Securities available for sale 516,863 934 515,929 0 516,863 Trading securities 7,786 7,735 51 0 7,786 Loans held for sale 367 0 368 0 368 Net loans 2,454,853 0 0 2,433,417 2,433,417 FHLB and other equity interests 24,508 n/a n/a n/a n/a Interest rate swaps 485 0 485 0 485 Accrued interest receivable 10,843 6 3,368 7,469 10,843 LIABILITIES Deposits $ (2,610,786 ) $ (2,215,349 ) $ (397,370 ) $ 0 $ (2,612,719 ) FHLB and other borrowings (245,117 ) 0 (242,592 ) 0 (242,592 ) Subordinated debentures (70,620 ) 0 (65,794 ) 0 (65,794 ) Interest rate swaps (686 ) 0 (686 ) 0 (686 ) Accrued interest payable (863 ) 0 (863 ) 0 (863 ) The following table presents the carrying amount and fair value of financial instruments at December 31, 2017 : Carrying Amount Fair Value Measurement Using: Total Fair Value Level 1 Level 2 Level 3 ASSETS Cash and cash equivalents $ 35,345 $ 35,345 $ 0 $ 0 $ 35,345 Securities available for sale 409,709 962 408,747 0 409,709 Trading securities 7,150 7,098 52 0 7,150 Loans held for sale 852 0 853 0 853 Net loans 2,126,266 0 0 2,126,824 2,126,824 FHLB and other equity interests 21,517 n/a n/a n/a n/a Interest rate swaps 149 0 149 0 149 Accrued interest receivable 9,254 6 2,651 6,597 9,254 LIABILITIES Deposits $ (2,167,815 ) $ (1,802,844 ) $ (362,756 ) $ 0 $ (2,165,600 ) FHLB and other borrowings (257,359 ) 0 (257,361 ) 0 (257,361 ) Subordinated debentures (70,620 ) 0 (63,575 ) 0 (63,575 ) Interest rate swaps (310 ) 0 (310 ) 0 (310 ) Accrued interest payable (554 ) 0 (554 ) 0 (554 ) The methods utilized to estimate the fair value of financial instruments at December 31, 2017 did not necessarily represent an exit price. In accordance with our adoption of ASU 2016-01 in 2018, the methods utilized to measure the fair value of financial instruments at December 31, 2018 represent an approximation of exit price; however, an actual exit price may differ. While estimates of fair value are based on management’s judgment of the most appropriate factors as of the balance sheet date, there is no assurance that the estimated fair values would have been realized if the assets had been disposed of or the liabilities settled at that date, since market values may differ depending on various circumstances. The estimated fair values would also not apply to subsequent dates. The fair value of other equity interests is based on the net asset values provided by the underlying investment partnership. ASU 2015-7 removes the requirement to categorize within the fair value hierarchy all investments measured using the net asset value per share practical expedient and related disclosures.In addition, other assets and liabilities that are not financial instruments, such as premises and equipment, are not included in the disclosures. Also, non-financial assets such as, among other things, the estimated earnings power of core deposits, the earnings potential of trust accounts, the trained workforce, and customer goodwill, which typically are not recognized on the balance sheet, may have value but are not included in the fair value disclosures.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Revenue from Contracts with Customers All of the Company’s revenue from contracts with customers in the scope of ASC 606 is recognized within Non-Interest Income. The following table presents the Corporation's Non-Interest Income by revenue stream and reportable segment for the years ended December 31, 2018 and 2017 . Items outside the scope of ASC 606 are noted as such. December 31, 2018 December 31, 2017 (2) Non-interest Income Service charges on deposit accounts $ 5,759 $ 4,809 Wealth and asset management fees 4,172 3,724 Mortgage banking (1) 1,019 906 Card processing and interchange income 4,261 3,763 Net realized gains on available-for-sale securities (1) 0 1,543 Other income 5,512 6,690 Total non-interest income $ 20,723 $ 21,435 (1) Not within scope of ASU 2014-9 (2) The Corporation elected the modified retrospective approach of adoption; therefore, prior period balances are presented under legacy GAAP and may not be comparable to current year presentation. Management determined that the primary sources of revenue emanating from interest and dividend income on loans and investment securities along with non-interest revenue resulting from security gains, loan servicing, gains on the sale of loans, commitment fees, fees from financial guarantees, certain credit cards fees, gains (losses) on sale of other real estate owned not financed by the Corporation, is not within the scope of ASU 2014-9. As a result, no changes were made during the period related to these sources of revenue, which comprised 90.7% of the total revenue of the Corporation for the year ended December 31, 2018 . The types of non-interest income within the scope of the standard that are material to the consolidated financial statements are services charges on deposit accounts, wealth and asset management fee income, card processing and interchange income, and other income. Service charges on deposit accounts : The Corporation earns fees from its deposit customers for transaction-based, account maintenance, and overdraft services. Transaction-based fees, which include services such as ATM use fees, stop payment charges, statement rendering, and ACH fees, are recognized at the time the transaction is executed, as that is the point in time the Corporation fulfills the customer’s request. Account maintenance fees, which relate primarily to monthly maintenance, are earned over the course of a month, representing the period over which the Corporation satisfies the performance obligation. Overdraft fees are recognized at the point in time that the overdraft occurs. Services charges on deposits are withdrawn from the customer’s account balance. Wealth and asset management fees : The Corporation earns wealth and asset management fees from its contracts with trust and brokerage customers to manage assets for investment, and/or to transact on their accounts. These fees are primarily earned over time as the Corporation provides the contracted monthly or quarterly services and are generally assessed based on a tiered scale of the market value of assets under management at month end. Fees for these services are billed to customers on a monthly or quarterly basis and are recorded as revenue at the end of the period for which the wealth and asset management services have been performed. Other performance obligations, such as the delivery of account statements to customers, are generally considered immaterial to the overall transaction price. Card processing and interchange income : The Corporation earns interchange fees from check card and credit card transactions conducted through the Visa payment network. Interchange fees from cardholder transactions represent a percentage of the underlying transaction value and are recognized daily, concurrently with the transaction processing services provided to the cardholder. Other income : The Corporation's other income includes sources such as bank owned life insurance, certain service fees, gains (losses) on sales of fixed assets, and gains (losses) on sale of other real estate owned. The service fees are recognized in the same manner as the service charges mentioned above. While gains on the sale of other real estate owned are generally within the scope of ASU 2014-9, the Corporation does not finance the sale of transactions and as such there is no change in revenue recognition.

Contingency

Contingency	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Contingency	Contingency On March 28, 2018 , the Corporation received a notice of assessment from the Pennsylvania Department of Revenue that reported a sales tax assessment amount of $824 plus interest and penalties of $339 resulting in a total assessed balance of $1,163 . The notice of assessment covers the period from January 1, 2013 through July 31, 2016. The Corporation has evaluated the specific items on which sales tax has been assessed in conjunction with its legal counsel and has determined that it is probable that the Corporation has some liability based on a review of the Pennsylvania tax laws that apply to the assessed items. The Corporation’s reasonable estimate of this liability is $96 , which has been accrued and reported in state and local tax expense in the accompanying consolidated statement of income for the year ended December 31, 2018 . The remaining balance that has not been accrued relates primarily to sales tax assessments associated with data processing and banking equipment maintenance, which the Corporation’s management and legal counsel have concluded were improperly assessed based on current Pennsylvania sales tax law. The Corporation appealed the notice of assessment to the Pennsylvania Board of Appeals and is awaiting a decision. The ultimate resolution of this matter, which may take in excess of one year, could result in an additional expense up to the total amount assessed.

Parent Company Only Financial I

Parent Company Only Financial Information	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
Parent Company Only Financial Information	Parent Company Only Financial Information CONDENSED BALANCE SHEETS December 31, 2018 2017 Assets Cash $ 355 $ 1,556 Trading securities 623 580 Investment in bank subsidiary 310,574 290,156 Investment in non-bank subsidiaries 20,686 21,781 Deferreds and current receivable 1,459 2,055 Other assets 1,749 2,059 Total assets $ 335,446 $ 318,187 Liabilities Borrowings from subsidiary $ 200 $ 1,400 Subordinated debentures 70,620 70,620 Other liabilities 1,796 2,257 Total liabilities 72,616 74,277 Stockholders' equity 262,830 243,910 Total liabilities and stockholders' equity $ 335,446 $ 318,187 CONDENSED STATEMENTS OF INCOME Year Ended December 31, Income: 2018 2017 2016 Dividends from: Bank subsidiary $ 12,029 $ 8,840 $ 8,700 Non-bank subsidiaries 3,000 2,250 1,200 Other 212 220 230 Total income 15,241 11,310 10,130 Expenses (5,184 ) (4,957 ) (2,611 ) Income before income taxes and equity in undistributed net income of subsidiaries: 10,057 6,353 7,519 Income tax benefit 1,116 1,614 813 Equity in undistributed net income of bank subsidiary 24,031 17,430 13,184 Distributions in excess of net income of non-bank subsidiaries (1,485 ) (1,537 ) (976 ) Net income $ 33,719 $ 23,860 $ 20,540 CONDENSED STATEMENTS OF CASH FLOWS Year Ended December 31, 2018 2017 2016 Net income Adjustments to reconcile net income to net cash provided by $ 33,719 $ 23,860 $ 20,540 operating activities: Equity in undistributed net income of bank subsidiary (24,031 ) (17,430 ) (13,184 ) Distributions in excess of net income of non–bank subsidiaries 1,485 1,537 976 Net unrealized gains on trading securities 0 (12 ) (58 ) Decrease (increase) in other assets 872 (549 ) (1,277 ) Increase in other liabilities 1,045 791 1,645 Net cash provided by operating activities 13,090 8,197 8,642 Cash flows from investing activities Investment in non-bank subsidiaries (400 ) 0 0 Investment in bank subsidiaries 0 (15,400 ) (49,223 ) Net cash used in investing activities (400 ) (15,400 ) (49,223 ) Cash flows from financing activities: Dividends paid (10,237 ) (10,094 ) (9,546 ) Proceeds from issuance of long term debt 0 0 50,000 Purchase of treasury stock (2,454 ) (1,877 ) (44 ) Net proceeds from issuance of common stock 0 19,294 0 Net advance (to) from subsidiary (1,200 ) 0 50 Net cash provided by (used in) financing activities (13,891 ) 7,323 40,460 Net increase (decrease) in cash (1,201 ) 120 (121 ) Cash beginning of year 1,556 1,436 1,557 Cash end of year $ 355 $ 1,556 $ 1,436

Other Comprehensive Income

Other Comprehensive Income	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Other Comprehensive Income	Other Comprehensive Income Other comprehensive income components and related tax effects were as follows for the years ended December 31, 2018 , 2017 , and 2016 : 2018 2017 2016 Unrealized holding losses on available for sale securities $ (5,073 ) $ (136 ) $ (1,838 ) Less reclassification adjustment for gains recognized in earnings 0 (160 ) (83 ) Net unrealized losses (5,073 ) (296 ) (1,921 ) Tax effect 1,066 104 672 Net-of-tax amount (4,007 ) (192 ) (1,249 ) Unrealized holding gains (losses) on available for sale securities for which a portion of an other-than-temporary impairment has been recognized in earnings 0 134 (442 ) Less reclassification adjustment for gains recognized in earnings 0 (1,383 ) (922 ) Net unrealized gains 0 (1,249 ) (1,364 ) Tax effect 0 437 477 Net-of-tax amount 0 (812 ) (887 ) Actuarial gain (loss) on postemployment health care plan 404 808 (282 ) Net amortization of transition obligation and actuarial gain 84 192 184 Net unrealized gain (loss) on postemployment health care plan 488 1,000 (98 ) Tax effect (102 ) (175 ) 34 Net-of-tax amount 386 825 (64 ) Unrealized gain (loss) on interest rate swap (204 ) 10 (63 ) Less reclassification adjustment for losses recognized in earnings 164 288 340 Net unrealized gain (loss) (40 ) 298 277 Tax effect 8 (104 ) (97 ) Net-of-tax amount (32 ) 194 180 Other comprehensive income (loss) $ (3,653 ) $ 15 $ (2,020 ) The following is a summary of the change in the accumulated other comprehensive income (loss) balance, net of tax, for the years ended December 31, 2018 , 2017 , and 2016 . Balance 12/31/17 Comprehensive Income (Loss) Reclassification of Disproportionate Tax Effect Balance 12/31/18 Unrealized gains (losses) on securities available for sale $ 473 $ (4,007 ) $ 0 $ (3,534 ) Unrealized gain (loss) on postretirement benefits plan (690 ) 386 0 (304 ) Unrealized loss on interest rate swap (126 ) (32 ) 0 (158 ) Total $ (343 ) $ (3,653 ) $ 0 $ (3,996 ) Balance 12/31/16 Comprehensive Income (Loss) Reclassification of Disproportionate Tax Effect Balance 12/31/17 Unrealized gains (losses) on securities available for sale $ 1,393 $ (1,004 ) $ 84 $ 473 Unrealized gain (loss) on postretirement benefits plan (1,217 ) 825 (298 ) (690 ) Unrealized loss on interest rate swap (297 ) 194 (23 ) (126 ) Total $ (121 ) $ 15 $ (237 ) $ (343 ) Balance 1/1/16 Comprehensive Income (Loss) Reclassification of Disproportionate Tax Effect Balance 12/31/16 Unrealized gains (losses) on securities available for sale $ 3,529 $ (2,136 ) $ 0 $ 1,393 Unrealized gain (loss) on postretirement benefits plan (1,153 ) (64 ) 0 (1,217 ) Unrealized loss on interest rate swap (477 ) 180 0 (297 ) Total $ 1,899 $ (2,020 ) $ 0 $ (121 )

Quarterly Financial Data (Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data (Unaudited)	Quarterly Financial Data (Unaudited) The table below sets forth the Corporation's unaudited condensed consolidated quarterly results of operations data for the years ended December 31, 2018 and December 31, 2017 (in thousands, except per share data). In the opinion of management, all adjustments (consisting of normal recurring accruals) that are necessary for a fair presentation of the quarterly results have been reflected in the data. It is also management's opinion, however, that quarterly results of operations data are not indicative of the financial results to be achieved in succeeding years or quarters. In order to obtain a more accurate indication of performance, one should review the financial and operating results, changes in stockholders' equity and cash flows for a period of several years. Quarters Ended in 2018 Quarters Ended in 2017 Mar. 31 June 30 Sept. 30 Dec. 31 Mar. 31 June 30 Sept. 30 Dec. 31 Total interest and dividend income $ 29,387 $ 32,099 $ 34,040 $ 36,344 $ 25,104 $ 27,003 $ 28,069 $ 28,698 Net interest income 24,100 25,826 26,878 28,116 21,202 22,989 23,517 23,801 Provision for loan losses 1,631 1,905 1,095 1,441 1,016 1,134 1,400 3,105 Non-interest income 4,751 5,606 5,933 4,433 5,773 5,089 5,032 5,541 Non-interest expense 18,999 19,543 20,794 20,006 17,034 17,797 17,618 17,588 Net income 7,097 8,441 9,236 8,945 6,480 6,683 7,246 3,451 Net income per share, basic 0.46 0.55 0.60 0.59 0.43 0.44 0.47 0.23 Net income per share, diluted 0.46 0.55 0.60 0.59 0.43 0.44 0.47 0.23

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Business and Organization	Business and Organization CNB Financial Corporation (the “Corporation”) is headquartered in Clearfield, Pennsylvania, and provides a full range of banking and related services through its wholly owned subsidiary, CNB Bank (the “Bank”). In addition, the Bank provides trust and asset management services, including the administration of trusts and estates, retirement plans, and other employee benefit plans as well as a full range of wealth management services. The Bank serves individual and corporate customers and is subject to competition from other financial institutions and intermediaries with respect to these services. In addition to the Bank, the Corporation also operates a consumer discount loan and finance business through its wholly owned subsidiary, Holiday Financial Services Corporation (“Holiday”). The Corporation and its other subsidiaries are subject to examination by federal and state regulators. The Corporation’s market area is primarily concentrated in the central and northwest regions of the Commonwealth of Pennsylvania, the central and northeast regions of the state of Ohio and western New York.
Basis of Financial Presentation	Basis of Financial Presentation The financial statements are consolidated to include the accounts of the Corporation and the Bank, CNB Securities Corporation, Holiday, CNB Risk Management, Inc. and CNB Insurance Agency. All significant intercompany accounts and transactions have been eliminated in the consolidated financial statements. Certain prior period amounts have been reclassified to conform to the current period presentation. Reclassifications had no effect on prior year net income or shareholders’ equity.
Use of Estimates	Use of Estimates To prepare financial statements in conformity with accounting principles generally accepted in the U.S., management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ.
Operating Segments	Operating Segments While the chief decision-makers monitor the revenue streams of the various products and services, operations are managed and financial performance is evaluated on a Corporation-wide basis, and operating segments are aggregated into one as operating results for all segments are similar. Accordingly, all of the financial service operations are considered by management to be aggregated in one reportable operating segment.
Securities	Securities When purchased, securities are classified as held to maturity, trading or available for sale. Debt securities are classified as held to maturity when the Corporation has the positive intent and ability to hold the securities to maturity. Held to maturity securities are carried at amortized cost. Debt securities are classified as trading when purchased principally for the purpose of selling them in the near term, or when the fair value option has been elected. Equity securities are classified as trading securities. Trading securities are recorded at fair value with changes in fair value included in earnings in non-interest income. Available for sale securities are those securities not classified as held to maturity or trading and are carried at their fair value. Unrealized gains and losses, net of deferred tax, on securities classified as available for sale are recorded as other comprehensive income. Management has not classified any debt securities as held to maturity. The amortized cost of debt securities classified as held to maturity or available for sale is adjusted for the amortization of premiums and the accretion of discounts over the period through contractual maturity or, in the case of mortgage-backed securities and collateralized mortgage obligations, over the estimated life of the security. Such amortization is included in interest income from securities. Gains and losses on securities sold are recorded on the trade date and based on the specific identification method. Declines in the fair value of debt securities below their cost that are other-than-temporary and attributable to credit losses are reflected in earnings. Other-than-temporary impairment losses that are not attributable to credit losses are reported as a component of accumulated other comprehensive income. In estimating other-than-temporary losses, management considers: the length of time and extent that fair value has been less than cost, the financial condition and near term prospects of the issuer, and the Corporation’s intent to sell, or whether it is "more likely than not" that it will be required to sell a security in an unrealized loss position before recovery of its amortized cost basis. If the Corporation intends to sell a security or it is "more likely than not" it will be required to sell a security before recovery of its amortized cost basis, the entire difference between amortized cost and fair value is recognized as impairment through earnings.
Loans	Loans Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal balance outstanding. Interest income is reported on the interest method and includes amortization of net deferred loan fees and costs over the loan term. Interest income on commercial, industrial, and agricultural loans, commercial mortgage loans, and residential real estate loans is discontinued at the time the loan is 90 days delinquent unless the credit is well-secured and in process of collection. Consumer loans are typically charged off no later than 180 days past due. Past due status is based on the contractual terms of the loan. Loans, including loans modified in a troubled debt restructuring, are placed on nonaccrual or charged off at an earlier date if collection of principal or interest is considered doubtful. Nonaccrual loans and loans past due 90 days still on accrual include both smaller balance homogeneous loans that are collectively evaluated for impairment and individually classified impaired loans. All interest accrued but not received on loans placed on nonaccrual is reversed against interest income. Interest received on such loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. Under the cost-recovery method, interest income is not recognized until the loan balance is reduced to zero. Under the cash-basis method, interest income is recorded when the payment is received in cash. For all portfolio segments, loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured
Concentration of Credit Risk	Concentration of Credit Risk Most of the Corporation’s business activity is with customers located within the Commonwealth of Pennsylvania and the states of Ohio and New York. Therefore, the Corporation’s exposure to credit risk is significantly affected by changes in the economies of Pennsylvania, Ohio, and New York.
Purchased Loans	Purchased Loans The Corporation purchased loans in connection with its acquisition of FC Banc Corp. in 2013 and Lake National Bank in 2016, some of which had, at the acquisition date, shown evidence of credit deterioration since origination. These purchased credit impaired loans were recorded at the amount paid, such that there was no carryover of the seller’s allowance for loan losses. Such purchased credit impaired loans are accounted for individually, and the Corporation estimates the amount and timing of expected cash flows for each loan. The expected cash flows in excess of the amount paid is recorded as interest income over the remaining life of the loan (accretable yield). The excess of the loan’s contractual principal and interest over expected cash flows is not recorded (nonaccretable difference). Over the life of the loan, expected cash flows continue to be estimated. If the present value of expected cash flows is less than the carrying amount, a loss is recorded. If the present value of the expected cash flows is greater than the carrying amount, it is recognized as part of future interest income. For loans purchased that did not show evidence of credit deterioration, the difference between the fair value of the loan at the acquisition date and the loan’s face value is being amortized as a yield adjustment over the estimated remaining life of the loan using the effective interest method.
Loans Held for Sale	Loans Held for Sale Loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or fair value, as determined by outstanding commitments from investors. Net unrealized losses, if any, are recorded as a valuation allowance and charged to earnings. Mortgage loans held for sale are generally sold with servicing rights retained. The carrying value of the mortgage loan sold is reduced by the amount allocated to the servicing right. Gains and losses on sales of mortgage loans are based on the difference between the selling price and the carrying value of the related loan sold.
Allowance for Loan Losses	Allowance for Loan Losses The allowance for loan losses is a valuation allowance for probable incurred credit losses. Loan losses are charged against the allowance when management believes the uncollectibility of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance account. Management determines the adequacy of the allowance based on historical patterns of charge-offs and recoveries, the nature and volume of the portfolio, information about specific borrower situations and estimated collateral values, industry experience, economic conditions, and other qualitative factors relevant to the collectability of the loan portfolio. While management believes that the allowance is adequate to absorb probable loan losses incurred at the balance sheet date, future adjustments may be necessary due to circumstances that differ substantially from the assumptions used in evaluating the adequacy of the allowance for loan losses. The allowance consists of specific and general components. The specific component relates to loans that are individually classified as impaired. A loan is impaired when, based on current information and events, it is probable that the Corporation will be unable to collect all amounts due according to the contractual terms of the loan agreement. Loans for which the terms have been modified, and for which the borrower is experiencing financial difficulties, are considered troubled debt restructurings and classified as impaired. Commercial and commercial real estate loans are individually evaluated for impairment. If a loan is impaired, a portion of the allowance is allocated so that the loan is reported, net, at the present value of estimated future cash flows using the loan’s existing rate or at the fair value of collateral if repayment is expected solely from the collateral. Large groups of smaller balance homogeneous loans, such as consumer and residential real estate loans, are collectively evaluated for impairment, and accordingly, they are not separately identified for impairment disclosures. Troubled debt restructurings are measured at the present value of estimated future cash flows using the loan’s effective rate at inception. If a troubled debt restructuring is considered to be a collateral dependent loan, the loan is reported, net, at the fair value of the collateral. For troubled debt restructurings that subsequently default, the Corporation determines the amount of reserve in accordance with the accounting policy for the allowance for loan losses. The general component of the allowance for loan losses covers non-impaired loans and loans collectively evaluated for impairment and is based on historical loss experience adjusted for current factors. The historical loss experience is determined by portfolio segment and is based on the migration analysis performed. This actual loss experience is supplemented with other factors based on the risks present for each portfolio segment. These historical loss factors include consideration of the following: levels of and trends in delinquencies, nonaccrual loans, and classified loans; trends in volume and terms of loans; effects of any changes in lending policies and procedures; experience, ability, and depth of management; national and local economic trends and conditions; and concentrations of credit. The following portfolio segments, which are the same as the Corporation’s portfolio classifications and associated risk characteristics, have been identified: • Commercial, industrial, and agricultural – risk characteristics include below average economic and employment conditions in many of the markets served by the Corporation, which has limited consumer spending. • Commercial mortgages – the most significant risk characteristic is the subjectivity involved in real estate valuations for properties located in areas with low growth economies. • Residential real estate – risk characteristics include slightly higher than historical levels of delinquencies and less than robust housing markets. • Consumer – risk characteristics include continuing weakness in industrial employment in many of the markets served by the Corporation and low wage growth. • Credit cards – the most significant risk characteristic is the unsecured nature of credit card loans. • Overdrafts – risk characteristics include the Corporation’s continued deposit growth and overall economic conditions which may lead to a greater likelihood of overdrawn deposit accounts.
Federal Home Loan Bank Stock	Federal Home Loan Bank Stock As a member of the Federal Home Loan Bank (“FHLB”) of Pittsburgh, the Corporation is required to purchase and hold stock in the FHLB to satisfy membership and borrowing requirements. This stock is restricted in that it can only be sold to the FHLB or to another member institution, and all sales of FHLB stock must be at par. As a result of these restrictions, FHLB stock is unlike other investment securities insofar as there is no trading market for FHLB stock and the transfer price is determined by FHLB membership rules and not by market participants. FHLB stock is held as a long-term investment, is valued at its cost basis and is analyzed for impairment based on the ultimate recoverability of the par value. The Company evaluates impairment quarterly. The decision of whether impairment exists is a matter of judgment that reflects our view of the FHLB’s long-term performance, which includes factors such as the following: • its operating performance; • the severity and duration of declines in the fair value of its net assets related to its capital stock amount; • its commitment to make payments required by law or regulation and the level of such payments in relation to its operating performance; • the impact of legislative and regulatory changes on the FHLB, and accordingly, on the members of FHLB; and • its liquidity and funding position.
Premises and Equipment	Premises and Equipment Premises and equipment are stated at cost less accumulated depreciation. Depreciation of premises and equipment is computed principally by the straight line method. In general, useful lives range from 3 to 39 years with lives for furniture, fixtures and equipment ranging from 3 to 10 years and lives of buildings and building improvements ranging from 15 to 39 years . Amortization of leasehold improvements is computed using the straight-line method over useful lives of the leasehold improvements or the term of the lease, whichever is shorter. Maintenance, repairs and minor renewals are charged to expense as incurred.
Foreclosed Assets	Foreclosed Assets Assets acquired through or in lieu of loan foreclosure are initially recorded at fair value less estimated selling costs when acquired, establishing a new cost basis. Physical possession of residential real estate property collateralizing a consumer mortgage loan occurs when legal title is obtained upon completion of foreclosure or when the borrower conveys all interest in the property to satisfy the loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. These assets are subsequently accounted for at the lower of cost or fair value, less estimated costs to sell. If fair value declines, a valuation allowance is recorded through expense. Costs after acquisition are expensed.
Bank Owned Life Insurance	Bank Owned Life Insurance The Corporation has purchased life insurance policies on certain key employees. Bank-owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill resulting from business combinations prior to January 1, 2009 represents the excess of the purchase price over the fair value of the net assets of businesses acquired. Goodwill resulting from business combinations after January 1, 2009 is generally determined as the excess of the fair value of the consideration transferred, plus the fair value of any noncontrolling interest in the acquiree, over the fair value of the net assets acquired and liabilities assumed as of the acquisition date. Goodwill and intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are not amortized, but tested for impairment at least annually or more frequently if events and circumstances exist that indicate an impairment test should be performed. The Corporation has selected December 31 as the date to perform the annual impairment test. Intangible assets with definite useful lives are amortized over their estimated useful lives. Goodwill is the only intangible asset with an indefinite life on the Corporation’s balance sheet. Other intangible assets consist of core deposit intangible assets arising from the acquisition of FC Banc Corp. in 2013 and Lake National Bank in 2016. The core deposit intangible assets from these acquisitions are amortized using an accelerated method over their estimated useful lives of seven years and four years , respectively.
Long-term Assets	Long-term Assets Premises and equipment, goodwill and other intangible assets, and other long-term assets are reviewed for impairment when events indicate their carrying amount may not be recoverable from future undiscounted cash flows. If impaired, the assets are recorded at fair value.
Loan Commitments and Related Financial Instruments	Loan Commitments and Related Financial Instruments Financial instruments include off-balance sheet credit instruments, such as commitments to make loans and commercial letters of credit, issued to meet customer financing needs. The face amount for these items represents the exposure to loss, before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded.
Derivatives	Derivatives Derivative financial instruments are recognized as assets or liabilities at fair value. The Corporation has interest rate swap agreements which are used as part of its asset liability management to help manage interest rate risk. The Corporation does not use derivatives for trading purposes. At the inception of a derivative contract, the Corporation designates the derivative as one of three types based on the purpose of the contract and belief as to its effectiveness as a hedge. These three types are (1) a hedge of the fair value of a recognized asset or liability or of an unrecognized firm commitment (“fair value hedge”), (2) a hedge of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (“cash flow hedge”), or (3) an instrument with no hedging designation (“stand-alone derivative”). For a fair value hedge, the gain or loss on the derivative, as well as the offsetting loss or gain on the hedged item, are recognized in current earnings as fair values change. For a cash flow hedge, the gain or loss on the derivative is reported in other comprehensive income and is reclassified into earnings in the same periods during which the hedged transaction affects earnings. For both types of hedges, changes in the fair value of derivatives that are not highly effective in hedging the changes in fair value or expected cash flows of the hedged item are recognized immediately in current earnings. Changes in the fair value of derivatives that do not qualify for hedge accounting are reported currently in earnings, as non-interest income. Net cash settlements on derivatives that qualify for hedge accounting are recorded in interest income or interest expense, based on the item being hedged. Net cash settlements on derivatives that do not qualify for hedge accounting are reported in non-interest income. Cash flows on hedges are classified in the cash flow statement the same as the cash flows of the items being hedged. The Corporation formally documents the relationship between derivatives and hedged items, as well as the risk-management objective and the strategy for undertaking hedge transactions, at the inception of the hedging relationship. This documentation includes linking fair value or cash flow hedges to specific assets and liabilities on the balance sheet or to specific firm commitments or forecasted transactions. The Corporation also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivative instruments that are used are highly effective in offsetting changes in fair values or cash flows of the hedged items. The Corporation discontinues hedge accounting when it determines that the derivative is no longer effective in offsetting changes in the fair value or cash flows of the hedged item, the derivative is settled or terminates, a hedged forecasted transaction is no longer probable, a hedged firm commitment is no longer firm, or treatment of the derivative as a hedge is no longer appropriate or intended. When hedge accounting is discontinued, subsequent changes in fair value of the derivative are recorded as non-interest income. When a fair value hedge is discontinued, the hedged asset or liability is no longer adjusted for changes in fair value and the existing basis adjustment is amortized or accreted over the remaining life of the asset or liability. When a cash flow hedge is discontinued but the hedged cash flows or forecasted transactions are still expected to occur, gains or losses that were accumulated in other comprehensive income are amortized into earnings over the same periods which the hedged transactions will affect earnings.
Advertising Costs	Advertising Costs Advertising costs are generally expensed as incurred and amounted to $2,345 , $2,243 and $1,799 , for 2018 , 2017 , and 2016 , respectively.
Mortgage Servicing Rights	Mortgage Servicing Rights Servicing rights are recognized separately when they are acquired through sales of loans. Servicing rights are initially recorded at fair value with the income statement effect recorded in mortgage banking. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, the custodial earnings rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses. The Corporation compares the valuation model inputs and results to published industry data in order to validate the model results and assumptions. All classes of servicing assets are subsequently measured using the amortization method which requires servicing rights to be amortized into non-interest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. Servicing rights are evaluated for impairment based upon the fair value of the rights as compared to carrying amount. Impairment is determined by stratifying rights into groupings based on predominant risk characteristics, such as interest rate, loan type and investor type. Impairment is recognized through a valuation allowance for an individual grouping, to the extent that fair value is less than the carrying amount. If the Corporation later determines that all or a portion of the impairment no longer exists for a particular grouping, a reduction of the allowance may be recorded as an increase to income. Changes in valuation allowances are reported with mortgage banking income on the income statement. The fair values of servicing rights are subject to significant fluctuations as a result of changes in estimated and actual prepayment speeds and default rates and losses. Servicing fee income, which is reported on the income statement as mortgage banking income, is recorded for fees earned for servicing loans. The fees are based on a contractual percentage of the outstanding principal or a fixed amount per loan and are recorded as income when earned. The amortization of mortgage servicing rights is netted against loan servicing fee income. Late fees and ancillary fees related to loan servicing are not material.
Treasury Stock	Treasury Stock The purchase of the Corporation’s common stock is recorded at cost. Purchases of the stock are made in the open market based on market prices. At the date of subsequent reissue, the treasury stock account is reduced by the cost of such stock on a first-in-first-out basis.
Stock-Based Compensation	Stock-Based Compensation The Corporation has a stock incentive plan for key employees and independent directors. The Stock Incentive Plan, which is administered by a committee of the Board of Directors, provides for up to 500,000 shares of common stock to be awarded in the form of nonqualified options or restricted stock. For key employees, the plan vesting is either one-third or one-fourth of the granted options or restricted stock per year, beginning one year after the grant date, with 100% vesting on the third or fourth anniversary of the grant date, respectively. Prior to 2018, for independent directors, the vesting schedule was one-third of the granted options or restricted stock per year beginning one year after the grant date, with 100% vested on the third anniversary of the grant date. Beginning in 2018, stock compensation received by independent directors vests immediately. At December 31, 2018 and 2017 , there was no unrecognized compensation cost related to nonvested stock options granted under this plan, and no stock options were granted during the years ended December 31, 2018 , 2017 , and 2016 . In addition to the time-based restricted stock disclosed above, the Corporation’s Board of Directors grants performance-based restricted stock awards (“PBRSAs”) to key employees. The number of PBRSAs will depend on certain performance conditions and are also subject to service-based vesting. In 2018, awards with a maximum of 10,468 shares in aggregate were granted to key employees. In 2017, an award with a maximum of 5,306 shares was granted to a key employee. During 2018 , 2017 , and 2016 , the Executive Compensation and Personnel Committee of the Corporation's Board of Directors granted a total of 40,108 , 39,673 and 52,750 shares, respectively, of restricted common stock to certain key employees and all independent directors of the Corporation. Compensation expense for the restricted stock awards is recognized over the requisite service period based on the fair value of the shares at the date of grant on a straight-line basis. Nonvested restricted stock awards are recorded as a reduction of additional paid-in-capital in shareholders’ equity until earned. Compensation expense resulting from these restricted stock awards was $1,545 , $928 and $820 for the years ended December 31, 2018 , 2017 , and 2016 , respectively.
Comprehensive Income	Comprehensive Income The Corporation presents comprehensive income as part of the Consolidated Statement of Income and Comprehensive Income. Other comprehensive income (loss) consists of unrealized holding gains (losses) on the available for sale securities portfolio, changes in the unrecognized actuarial gain and transition obligation related to the Corporation’s post retirement benefits plans, and changes in the fair value of the Corporation’s interest rate swaps, net of tax.
Income Taxes	Income Taxes Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. Deferred tax assets and liabilities are the expected future tax amounts for the temporary differences between carrying amounts and tax bases of assets and liabilities, computed using enacted tax rates. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized. A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. The Corporation recognizes interest and/or penalties related to income tax matters in income tax expense.
Retirement Plans	Retirement Plans The Corporation’s expense associated with its 401(k) plan is determined under the provisions of the plan document and includes both matching and profit sharing components. Deferred compensation and supplemental retirement plan expenses allocate the benefits over years of service.
Earnings Per Share	Earnings Per Share Basic earnings per share is computed by dividing net income available to common shareholders by the weighted average number of shares outstanding during the applicable period, excluding outstanding participating securities. Diluted earnings per share is computed using the weighted average number of shares determined for the basic computation plus the dilutive effect of potential common shares issuable under certain stock compensation plans. Unvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and are included in the computation of earnings per share pursuant to the two-class method. The Corporation has determined that its outstanding non-vested stock awards are participating securities.
Cash and Cash Equivalents	Cash and Cash Equivalents For purposes of the consolidated statement of cash flows, the Corporation defines cash and cash equivalents as cash and due from banks, interest bearing deposits with other banks, and Federal funds sold. Net cash flows are reported for customer loan and deposit transactions, interest bearing time deposits with other banks and borrowings with original maturities of 90 days or less.
Restrictions on Cash	Restrictions on Cash The Bank is required to maintain average reserve balances with the Federal Reserve Bank or in vault cash. The average amount of these non-interest bearing reserve balances for the year ended December 31, 2018 and 2017 was $50 , which was maintained in vault cash. Note 12 to the consolidated financial statements discloses the cash collateral balances required to be maintained in connection with the Corporation’s interest rate swaps.
Loss Contingencies	Loss Contingencies Loss contingencies, including claims and legal actions arising in the ordinary course of business, are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. See Note 22 to the consolidated financial statements for disclosure associated with a loss contingency in connection with a sales tax notice of assessment from the Pennsylvania Department of Revenue.
Fair Value of Financial Instruments	Fair Value of Financial Instruments Fair values of financial instruments are estimated using relevant market information and other assumptions, as more fully disclosed in a separate note. Fair value estimates involve uncertainties and matters of significant judgment regarding interest rates, credit risk, prepayments, and other factors, especially in the absence of broad markets for particular items. Changes in assumptions or in market conditions could significantly affect the estimates.
Adoption of New Accounting Standards and Effects of Newly Issued But Not Yet Effective Accounting Standards	Adoption of New Accounting Standards On February 14, 2018, the Financial Accounting Standard Board ("FASB") issued Accounting Standards Update ("ASU") No. 2018-02, "Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income." The amendments in this ASU allow, but do not require, entities to reclassify certain income tax effects in accumulated other comprehensive income ("AOCI") to retained earnings that resulted from the Tax Cuts and Jobs Act (the "Act"). The Corporation adopted this ASU at December 31, 2017, which resulted in a reclassification that decreased beginning accumulated other comprehensive income and increased beginning retained earnings by $237 thousand . There were no other income tax effects related to the Act that were reclassified as a result of the adoption of the accounting standard. In January 2016, the FASB issued ASU 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities”. ASU 2016-01 provides updated accounting and reporting requirements for both public and non-public entities. The most significant provisions that will impact the Corporation are: 1) equity securities available for sale will be measured at fair value, with the changes in fair value recognized in the income statement; 2) eliminate the requirement to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments at amortized cost on the balance sheet; 3) utilization of exit price notion when measuring the fair value of financial instruments for disclosure purposes; 4) require separate presentation of both financial assets and liabilities by measurement category and form of financial asset on the balance sheet or accompanying notes to the financial statements. The Corporation's adoption of ASU 2016–01 on January 1, 2018, did not have a material effect on the Corporation's consolidated financial condition or results of operations. In accordance with the standard, the company measured fair value of its loan portfolio at December 31, using an exit price methodology as indicated in Note 20, fair value. In May 2014, FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606).” Under ASU 2014-09, as modified by subsequent ASUs, revenue is recognized when a customer obtains control of promised services in an amount that reflects the consideration the entity expects to receive in exchange for those services. In addition, the standard requires disclosure of the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The Corporation applied the five-step method outlined in ASU 2014-09 to all revenue streams scoped-in by ASU 2014-09 and elected the modified retrospective implementation method. Management determined that the primary sources of revenue emanating from interest and dividend income on loans and investment securities along with non-interest revenue resulting from security gains, loan servicing, gains on the sale of loans, commitment fees, fees from financial guarantees, certain credit cards fees, gains (losses) on sale of other real estate owned not financed by the Corporation, are not within the scope of ASU 2014-09 because the revenue from those contracts with customers is covered by other guidance in U.S. GAAP. The Corporation’s largest sources of noninterest revenue which are subject to the guidance include wealth and asset management fees, service charges on deposit accounts and card processing and interchange income. Adoption of ASU 2014-09 did not change the timing and pattern of the Corporation’s revenue recognition related to scoped-in noninterest income. No cumulative effect adjustment to opening retained earnings was necessary. New disclosures required by the ASU have been included in Note 21. Effects of Newly Issued But Not Yet Effective Accounting Standards In August 2018, the FASB issued ASU 2018-14, "Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans." ASU 2018-14 amends ASC 715-20, "Compensation - Retirement Benefits - Defined Benefit Plans - General." The amended guidance modifies the disclosure requirements for employers that sponsor defined benefit pension or other post-retirement plans by removing and adding certain disclosures for these plans. The eliminated disclosures include (a) the amounts in accumulated Other Comprehensive Income ("OCI") expected to be recognized in net periodic benefit costs over the next fiscal year, and (b) the effects of a one percentage point change in assumed health care cost trend rates on the net periodic benefit costs and the benefit obligation for post-retirement health care benefits. Additional disclosures include descriptions of significant gains and losses affecting the benefit obligation for the period. The update will be effective for annual reporting periods beginning after December 15, 2020, with early adoption permitted for annual reporting periods beginning after December 15, 2019. Management is currently evaluating the impact of the adoption of ASU 2018-14 on the Corporation’s footnote disclosures included in the financial statements. In August 2018, the FASB issued ASU 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement.” ASU 2018-13 modifies disclosure requirements on fair value measurements based on the concepts in the Concepts Statement, including the consideration of costs and benefits. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. The update will be effective for interim and annual reporting periods beginning after December 15, 2019, with early adoption permitted for interim and annual reporting periods beginning after December 15, 2018. Management is currently evaluating the impact of the adoption of ASU 2018-13 on the Corporation’s footnote disclosures included in the financial statements. In June 2016, the FASB issued an update (ASU 2016-13, Financial Instruments – Credit Losses) which will require recognition of an entity’s current estimate of all expected credit losses for assets measured at amortized cost. The amendments in ASU 2016-13 eliminate the probable initial recognition threshold in current GAAP. In addition, the amendments in ASU 2016-13 broaden the information that an entity must consider in developing its expected credit loss estimate for assets measured either collectively or individually, such as loans. The update will be effective for interim and annual reporting periods beginning after December 15, 2019, with early adoption permitted for interim and annual reporting periods beginning after December 15, 2018. The Corporation has formed a committee comprised of individuals from different disciplines, including credit administration, finance, loan servicing and information technology, to evaluate the requirements of the new standard and the impact it will have on current processes. Management has performed a data gap analysis, and is developing analytical approaches to determine CECL model inputs. The Corporation has also engaged a software vendor to assist in implementing a CECL production platform. The new guidance is expected to be heavily influenced by an assessment of the composition, characteristics, and credit quality of the Corporation's loan and investment securities portfolio as well as the economic conditions in effect at the adoption date. The impact to the financial statements is yet to be determined. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” ASU 2016-02 requires a lessee to recognize the following for all leases (with the exception of short-term leases) at the commencement date: (1) a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and (2) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged. Certain targeted improvements were made to align, where necessary, lessor accounting with the lessee accounting model. The update will be effective for reporting periods beginning after December 15, 2018, with early adoption permitted. Management recorded a cumulative effect adjustment effective at the beginning of 2019, which will include approximately $12.5 million of right of use assets, approximately $800 thousand in prepaid rent, and $13.3 million of related lease liabilities. The Corporation entered into two new leases with a lease commencement date subsequent to January 1, 2019, which included approximately an additional $5 million of lease assets and $5 million of related lease liabilities. The adoption is not expected to have a material impact to net income.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	The computation of basic and diluted earnings per share is shown below. There were no anti-dilutive stock options for the years ended December 31, 2018 , 2017 , and 2016 . Years Ended December 31, 2018 2017 2016 Basic earnings per common share computation Net income per consolidated statements of income $ 33,719 $ 23,860 $ 20,540 Net earnings allocated to participating securities (150 ) (135 ) (129 ) Net earnings allocated to common stock $ 33,569 $ 23,725 $ 20,411 Distributed earnings allocated to common stock $ 10,186 $ 10,030 $ 9,480 Undistributed earnings allocated to common stock 23,383 13,695 10,931 Net earnings allocated to common stock $ 33,569 $ 23,725 $ 20,411 Weighted average common shares outstanding, including shares considered participating securities 15,274 15,212 14,457 Less: Average participating securities (64 ) (80 ) (82 ) Weighted average shares 15,210 15,132 14,375 Basic earnings per common share $ 2.21 $ 1.57 $ 1.42 Diluted earnings per common share computation Net earnings allocated to common stock $ 33,569 $ 23,725 $ 20,411 Weighted average common shares outstanding for basic earnings per common share 15,210 15,132 14,375 Add: Dilutive effects of assumed exercises of stock options 0 0 0 Weighted average shares and dilutive potential common shares 15,210 15,132 14,375 Diluted earnings per common share $ 2.21 $ 1.57 $ 1.42

Securities (Tables)

Securities (Tables)	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Securities Available for Sale	Securities available-for-sale at December 31, 2018 and 2017 are as follows: December 31, 2018 December 31, 2017 Amortized Unrealized Fair Amortized Unrealized Fair Cost Gains Losses Value Cost Gains Losses Value U.S. Gov’t sponsored entities $ 134,010 $ 254 $ (1,570 ) $ 132,694 $ 108,578 $ 478 $ (908 ) $ 108,148 State & political subdivisions 134,662 1,942 (573 ) 136,031 134,428 3,609 (314 ) 137,723 Residential & multi-family mortgage 209,126 500 (3,573 ) 206,053 111,214 304 (1,882 ) 109,636 Corporate notes & bonds 12,356 22 (601 ) 11,777 17,610 52 (462 ) 17,200 Pooled SBA 30,163 135 (924 ) 29,374 36,260 355 (575 ) 36,040 Other 1,020 0 (86 ) 934 1,020 0 (58 ) 962 Total $ 521,337 $ 2,853 $ (7,327 ) $ 516,863 $ 409,110 $ 4,798 $ (4,199 ) $ 409,709 Information pertaining to security sales is as follows: Year ended December 31 Proceeds Gross Gains Gross Losses 2018 $ 0 $ 0 $ 0 2017 16,340 1,614 71 2016 4,420 1,005 0
Trading Securities	Trading securities at December 31, 2018 and 2017 are as follows: 2018 2017 Corporate equity securities $ 5,828 $ 5,125 Mutual Funds 1,058 1,499 Certificates of deposit 268 220 Corporate notes and bonds 581 254 U.S. Government sponsored entities 51 52 Total $ 7,786 $ 7,150
Securities with Unrealized Loss Position	Securities with unrealized losses at December 31, 2018 and 2017 , aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, are as follows: December 31, 2018 Less than 12 Months 12 Months or More Total Description of Securities Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Gov’t sponsored entities $ 14,786 $ (41 ) $ 70,676 $ (1,529 ) $ 85,462 $ (1,570 ) State & political subdivisions 13,834 (62 ) 21,080 (511 ) 34,914 (573 ) Residential & multi-family mortgage 69,015 (656 ) 87,286 (2,917 ) 156,301 (3,573 ) Corporate notes & bonds 0 0 9,759 (601 ) 9,759 (601 ) Pooled SBA 760 (7 ) 20,795 (917 ) 21,555 (924 ) Other 0 0 934 (86 ) 934 (86 ) $ 98,395 $ (766 ) $ 210,530 $ (6,561 ) $ 308,925 $ (7,327 ) December 31, 2017 Less than 12 Months 12 Months or More Total Description of Securities Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Gov’t sponsored entities 55,696 (540 ) 34,754 (368 ) 90,450 (908 ) State & political subdivisions 15,890 (69 ) 4,104 (245 ) 19,994 (314 ) Residential and multi-family mortgage 30,144 (153 ) 63,699 (1,729 ) 93,843 (1,882 ) Corporate notes & bonds 5,005 (9 ) 9,042 (453 ) 14,047 (462 ) Pooled SBA 0 0 22,270 (575 ) 22,270 (575 ) Other 0 0 962 (58 ) 962 (58 ) 106,735 (771 ) 134,831 (3,428 ) 241,566 (4,199 )
Roll-Forward of Other-Than-Temporary Impairment Amount Related to Credit Losses	A roll-forward of the other-than-temporary impairment amount related to credit losses for the years ended December 31, 2018 , 2017 , and 2016 is as follows: 2018 2017 2016 Balance of credit losses on debt securities for which a portion of other-than-temporary impairment was recognized in earnings, beginning of period $ 0 $ 2,071 $ 4,054 Credit losses previously recognized on securities sold during the period 0 (2,071 ) (1,983 ) Additional credit loss for which other-than-temporary impairment was not previously recognized 0 0 0 Additional credit loss for which other-than-temporary impairment was previously recognized 0 0 0 Balance of credit losses on debt securities for which a portion of other-than-temporary impairment was recognized in earnings, end of period $ 0 $ 0 $ 2,071
Schedule of Contractual Maturity of Securities Available for Sale, Excluding Equity Securities	The following is a schedule of the contractual maturity of securities available for sale, excluding other securities, at December 31, 2018 : December 31, 2018 Amortized Cost Fair Value 1 year or less $ 58,509 $ 58,003 1 year – 5 years 146,605 146,111 5 years – 10 years 70,984 71,451 After 10 years 4,930 4,937 281,028 280,502 Residential and multi-family mortgage 209,126 206,053 Pooled SBA 30,163 29,374 Other 1,020 934 Total debt securities $ 521,337 $ 516,863

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
Schedule of Net Loans	Total net loans at December 31, 2018 and 2017 are summarized as follows: 2018 2017 Commercial, industrial, and agricultural $ 916,297 $ 704,606 Commercial mortgages 697,776 644,597 Residential real estate 771,309 713,347 Consumer 86,035 80,193 Credit cards 7,623 6,753 Overdrafts 308 352 Less: unearned discount (4,791 ) (3,889 ) allowance for loan losses (19,704 ) (19,693 ) Loans, net $ 2,454,853 $ 2,126,266
Allowance for Loan Losses	Transactions in the allowance for loan losses for the year ended December 31, 2018 were as follows: Commercial, Industrial, and Agricultural Commercial Mortgages Residential Real Estate Consumer Credit Cards Overdrafts Total Allowance for loan losses, January 1, 2018 $ 6,160 $ 9,007 $ 2,033 $ 2,179 $ 120 $ 194 $ 19,693 Charge-offs (253 ) (3,337 ) (315 ) (2,279 ) (90 ) (319 ) (6,593 ) Recoveries 171 30 67 141 33 90 532 Provision for loan losses 1,263 1,790 371 2,336 40 272 6,072 Allowance for loan losses, December 31, 2018 $ 7,341 $ 7,490 $ 2,156 $ 2,377 $ 103 $ 237 $ 19,704 Transactions in the allowance for loan losses for the year ended December 31, 2017 were as follows: Commercial, Industrial, and Agricultural Commercial Mortgages Residential Real Estate Consumer Credit Cards Overdrafts Total Allowance for loan losses, January 1, 2017 $ 5,428 $ 6,753 $ 1,653 $ 2,215 $ 93 $ 188 $ 16,330 Charge-offs (544 ) (116 ) (466 ) (2,555 ) (144 ) (252 ) (4,077 ) Recoveries 235 197 78 161 27 87 785 Provision for loan losses 1,041 2,173 768 2,358 144 171 6,655 Allowance for loan losses, December 31, 2017 $ 6,160 $ 9,007 $ 2,033 $ 2,179 $ 120 $ 194 $ 19,693 Transactions in the allowance for loan losses for the year ended December 31, 2016 were as follows: Commercial, Industrial, and Agricultural Commercial Mortgages Residential Real Estate Consumer Credit Cards Overdrafts Total Allowance for loan losses, January 1, 2016 $ 6,035 $ 5,605 $ 2,475 $ 2,371 $ 90 $ 161 $ 16,737 Charge-offs (601 ) (201 ) (499 ) (3,324 ) (96 ) (240 ) (4,961 ) Recoveries 89 8 93 122 22 71 405 Provision for loan losses (95 ) 1,341 (416 ) 3,046 77 196 4,149 Allowance for loan losses, December 31, 2016 $ 5,428 $ 6,753 $ 1,653 $ 2,215 $ 93 $ 188 $ 16,330
Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment	The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and is based on the Corporation’s impairment method as of December 31, 2018 and 2017 . The recorded investment in loans excludes accrued interest and unearned discounts due to their insignificance. December 31, 2018 Commercial, Industrial, and Agricultural Commercial Mortgages Residential Real Estate Consumer Credit Cards Overdrafts Total Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ 54 $ 4 $ 100 $ 0 $ 0 $ 10 $ 168 Collectively evaluated for impairment 7,183 3,036 2,056 2,377 103 227 14,982 Acquired with deteriorated credit quality 0 0 0 0 0 0 0 Modified in a troubled debt restructuring 104 4,450 0 0 0 0 4,554 Total ending allowance balance $ 7,341 $ 7,490 $ 2,156 $ 2,377 $ 103 $ 237 $ 19,704 Loans: Individually evaluated for impairment $ 1,334 $ 1,446 $ 502 $ 0 $ 0 $ 10 $ 3,292 Collectively evaluated for impairment 910,386 685,714 770,807 86,035 7,623 298 2,460,863 Acquired with deteriorated credit quality 0 567 0 0 0 0 567 Modified in a troubled debt restructuring 4,577 10,049 0 0 0 0 14,626 Total ending loans balance $ 916,297 $ 697,776 $ 771,309 $ 86,035 $ 7,623 $ 308 $ 2,479,348 December 31, 2017 Commercial, Industrial, and Agricultural Commercial Mortgages Residential Real Estate Consumer Credit Cards Overdrafts Total Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ 47 $ 0 $ 0 $ 0 $ 0 $ 0 $ 47 Collectively evaluated for impairment 5,868 3,563 2,033 2,179 120 194 13,957 Acquired with deteriorated credit quality 0 0 0 0 0 0 0 Modified in a troubled debt restructuring 245 5,444 0 0 0 0 5,689 Total ending allowance balance $ 6,160 $ 9,007 $ 2,033 $ 2,179 $ 120 $ 194 $ 19,693 Loans: Individually evaluated for impairment $ 1,187 $ 51 $ 0 $ 0 $ 0 $ 0 $ 1,238 Collectively evaluated for impairment 698,206 631,377 713,347 80,193 6,753 352 2,130,228 Acquired with deteriorated credit quality 0 1,079 0 0 0 0 1,079 Modified in a troubled debt restructuring 5,213 12,090 0 0 0 0 17,303 Total ending loans balance $ 704,606 $ 644,597 $ 713,347 $ 80,193 $ 6,753 $ 352 $ 2,149,848
Loans Individually Evaluated for Impairment Including Loans Modified in Troubled Debt Restructurings by Portfolio Segment	The following tables present information related to loans individually evaluated for impairment, including loans modified in troubled debt restructurings, by portfolio segment as of December 31, 2018 and 2017 and for the years ended December 31, 2018 , 2017 , and 2016 : December 31, 2018 Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated With an allowance recorded: Commercial, industrial, and agricultural $ 3,053 $ 3,037 $ 158 Commercial mortgage 10,799 6,709 4,454 Residential real estate 502 502 100 Overdrafts 10 10 10 With no related allowance recorded: Commercial, industrial, and agricultural 3,684 2,874 0 Commercial mortgage 5,659 4,786 0 Residential real estate 0 0 0 Overdrafts 0 0 0 Total $ 23,707 $ 17,918 $ 4,722 December 31, 2017 Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated With an allowance recorded: Commercial, industrial, and agricultural $ 1,915 $ 1,915 $ 292 Commercial mortgage 9,940 9,731 5,444 Residential real estate 0 0 0 With no related allowance recorded: Commercial, industrial, and agricultural 5,264 4,485 0 Commercial mortgage 3,211 2,410 0 Residential real estate 0 0 0 Total $ 20,330 $ 18,541 $ 5,736 Year Ended December 31, 2018 Average Recorded Investment Interest Income Recognized Cash Basis Interest Recognized With an allowance recorded: Commercial, industrial, and agricultural $ 2,745 $ 254 $ 249 Commercial mortgage 8,456 338 326 Residential real estate 304 20 19 Overdrafts 2 0 0 With no related allowance recorded: Commercial, industrial, and agricultural 4,642 157 148 Commercial mortgage 4,566 146 144 Residential real estate 0 0 0 Overdrafts 0 0 0 Total $ 20,715 $ 915 $ 886 Year Ended December 31, 2017 Average Recorded Investment Interest Income Recognized Cash Basis Interest Recognized With an allowance recorded: Commercial, industrial, and agricultural $ 1,513 $ 97 $ 97 Commercial mortgage 11,944 327 327 Residential real estate 0 0 0 With no related allowance recorded: Commercial, industrial, and agricultural 2,438 114 114 Commercial mortgage 2,474 122 122 Residential real estate 0 0 0 Total $ 18,369 $ 660 $ 660 Year Ended December 31, 2016 Average Recorded Investment Interest Income Recognized Cash Basis Interest Recognized With an allowance recorded: Commercial, industrial, and agricultural $ 2,616 $ 2 $ 2 Commercial mortgage 8,138 0 0 Residential real estate 50 6 6 With no related allowance recorded: Commercial, industrial, and agricultural 2,290 0 0 Commercial mortgage 2,773 0 0 Residential real estate 0 0 0 Total $ 15,867 $ 8 $ 8
Aging of Recorded Investment in Past Due Loans	The following table presents the recorded investment in nonaccrual loans and loans past due over 90 days still on accrual by class of loans as of December 31, 2018 and 2017 : December 31, 2018 December 31, 2017 Nonaccrual Past Due Over 90 Days Still on Accrual Nonaccrual Past Due Over 90 Days Still on Accrual Commercial, industrial, and agricultural $ 2,839 $ 489 $ 1,869 144 Commercial mortgages 7,694 53 11,065 0 Residential real estate 6,023 299 5,470 429 Consumer 683 44 828 37 Credit cards 0 5 0 54 Total $ 17,239 $ 890 $ 19,232 $ 664 The following table presents the aging of the recorded investment in past due loans as of December 31, 2018 and 2017 by class of loans. December 31, 2018 30-59 Days Past Due 60-89 Days Past Due Greater Than 89 Days Past Due Total Past Due Loans Not Past Due Total Commercial, industrial, and agricultural $ 2,379 $ 16 $ 2,341 $ 4,736 $ 911,561 $ 916,297 Commercial mortgages 858 3,058 297 4,213 693,563 697,776 Residential real estate 4,064 1,319 4,494 9,877 761,432 771,309 Consumer 474 283 367 1,124 84,911 86,035 Credit cards 59 15 5 79 7,544 7,623 Overdrafts 0 0 0 0 308 308 Total $ 7,834 $ 4,691 $ 7,504 $ 20,029 $ 2,459,319 $ 2,479,348 December 31, 2017 30-59 Days Past Due 60-89 Days Past Due Greater Than 89 Days Past Due Total Past Due Loans Not Past Due Total Commercial, industrial, and agricultural $ 2,745 $ 646 $ 748 $ 4,139 $ 700,467 $ 704,606 Commercial mortgages 233 0 292 525 644,072 644,597 Residential real estate 2,290 1,494 4,655 8,439 704,908 713,347 Consumer 454 307 812 1,573 78,620 80,193 Credit cards 29 2 54 85 6,668 6,753 Overdrafts 0 0 0 0 352 352 Total $ 5,751 $ 2,449 $ 6,561 $ 14,761 $ 2,135,087 $ 2,149,848
Restructured in Troubled Debt	The following table presents the number of loans, loan balances, and specific reserves for loans that have been restructured in a troubled debt restructuring as of December 31, 2018 and December 31, 2017 . December 31, 2018 December 31, 2017 Number of Loans Loan Balance Specific Reserve Number of Loans Loan Balance Specific Reserve Commercial, industrial, and agricultural 10 $ 4,577 $ 104 11 $ 5,213 $ 245 Commercial mortgages 15 10,049 4,450 9 12,090 5,444 Residential real estate 0 0 0 0 0 0 Consumer 0 0 0 0 0 0 Credit cards 0 0 0 0 0 0 Total 25 $ 14,626 $ 4,554 20 $ 17,303 $ 5,689
Loans by Class Modified as Troubled Debt Restructurings	The following table presents loans by class modified as troubled debt restructurings that occurred during the years ended December 31, 2018 , 2017 , and 2016 : Year Ended December 31, 2018 Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Commercial, industrial, and agricultural 0 $ 0 $ 0 Commercial mortgages 5 1,570 1,570 Residential real estate 0 0 0 Consumer 0 0 0 Credit cards 0 0 0 Total 5 $ 1,570 $ 1,570 Year Ended December 31, 2017 Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Commercial, industrial, and agricultural 4 $ 2,750 $ 2,750 Commercial mortgages 2 6,421 6,421 Residential real estate 0 0 0 Consumer 0 0 0 Credit cards 0 0 0 Total 6 $ 9,171 $ 9,171 Year Ended December 31, 2016 Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Commercial, industrial, and agricultural 1 $ 109 $ 109 Commercial mortgages 0 0 0 Residential real estate 0 0 0 Consumer 0 0 0 Credit cards 0 0 0 Total 1 $ 109 $ 109
Schedule of Loan Assigned Risk Rating within 12 Months of Balance Sheet Date	The following table presents the recorded investment in residential, consumer, and credit card loans based on performance status as of December 31, 2018 and December 31, 2017 : December 31, 2018 December 31, 2017 Residential Real Estate Consumer Credit Cards Residential Real Estate Consumer Credit Cards Performing $ 764,987 $ 85,308 $ 7,618 $ 707,448 $ 79,328 $ 6,699 Nonperforming 6,322 727 5 5,899 865 54 Total $ 771,309 $ 86,035 $ 7,623 $ 713,347 $ 80,193 $ 6,753 All loans included in the following tables have been assigned a risk rating within 12 months of the balance sheet date. December 31, 2018 Pass Special Mention Substandard Doubtful Total Commercial, industrial, and agricultural $ 889,547 $ 10,519 $ 16,231 $ 0 $ 916,297 Commercial mortgages 683,413 3,241 11,122 0 697,776 Total $ 1,572,960 $ 13,760 $ 27,353 $ 0 $ 1,614,073 December 31, 2017 Pass Special Mention Substandard Doubtful Total Commercial, industrial, and agricultural $ 668,570 $ 16,726 $ 19,310 $ 0 $ 704,606 Commercial mortgages 626,163 4,419 14,015 0 644,597 Total $ 1,294,733 $ 21,145 $ 33,325 $ 0 $ 1,349,203
Summary of Holiday's Loan Portfolio Included in Consumer and Residential Loans	Holiday’s loan portfolio, included in consumer and residential loans above, is summarized as follows at December 31, 2018 and 2017 : 2018 2017 Consumer $ 26,568 $ 23,428 Less: unearned discount (4,791 ) (3,889 ) Total $ 21,777 $ 19,539

Secondary Market Mortgage Act_2

Secondary Market Mortgage Activities (Tables)	12 Months Ended
	Dec. 31, 2018
Mortgage Banking [Abstract]
Summary of Secondary Market Mortgage Activities	The following summarizes secondary market mortgage activities for the years ended December 31, 2018 , 2017 , and 2016 : 2018 2017 2016 Loans originated for resale $ 22,990 $ 25,231 $ 31,255 Proceeds from sales of loans held for sale 23,311 24,285 33,045 Net gains on sales of loans held for sale 624 545 818 Loan servicing fees 600 563 421
Summary of Activity for Capitalized Mortgage Servicing Rights	The following summarizes activity for capitalized mortgage servicing rights for the years ended December 31, 2018 , 2017 , and 2016 : 2018 2017 2016 Balance, beginning of year $ 1,387 $ 1,391 $ 962 Additions 315 198 200 Servicing rights acquired 0 0 367 Amortization (207 ) (202 ) (138 ) Balance, end of year $ 1,495 $ 1,387 $ 1,391

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Summary of Premises and Equipment	The following summarizes premises and equipment at December 31, 2018 and 2017 : 2018 2017 Land $ 8,301 $ 8,147 Premises and leasehold improvements 52,810 53,903 Furniture and equipment 27,548 31,238 Construction in process 1,283 71 89,942 93,359 Less: accumulated depreciation 40,022 42,644 Premises and equipment, net $ 49,920 $ 50,715
Summary of Minimum Annual Rental Commitments Under Operating Lease	The minimum annual rental commitments under these leases at December 31, 2018 are as follows: 2019 $ 1,514 2020 1,513 2021 1,528 2022 1,567 2023 1,502 Thereafter 18,538 $ 26,162
Summary of Minimum Annual Rental Commitments Under Sale Lease Back	The minimum annual rental commitments under this sale-leaseback transaction at December 31, 2018 are as follows: 2019 $ 105 2020 105 2021 105 2022 105 2023 105 Thereafter 315 $ 840

Foreclosed Assets (Tables)

Foreclosed Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Real Estate [Abstract]
Summary of Foreclosed Assets Activity	Foreclosed real estate is reported net of a valuation allowance and included in accrued interest receivable and other assets in the accompanying consolidated balance sheets. Activity for the years ended December 31, 2018 , 2017 , and 2016 is as follows: 2018 2017 2016 Balance, beginning of year $ 710 $ 1,015 $ 654 Acquired from Lake National Bank 0 0 665 Additions 228 630 120 Sales (at carrying value) (520 ) (935 ) (424 ) Balance, end of year $ 418 $ 710 $ 1,015
Summary of Expenses Related to Foreclosed Real Estate	Expenses related to foreclosed real estate include: 2018 2017 2016 Net gain on sale $ (310 ) $ (208 ) $ (134 ) Operating expenses, net of rental income 283 366 223 $ (27 ) $ 158 $ 89

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Change in Carrying Amount of Goodwill	The change in the carrying amount of goodwill for the years ended December 31, 2018 and 2017 is as follows: 2018 2017 Balance, beginning of year $ 38,730 $ 38,730 Acquired during the year 0 0 Balance, end of year $ 38,730 $ 38,730
Estimated Amortization Expense of Core Deposit Intangible Assets	The estimated remaining amortization expense of core deposit intangible assets is as follows: 2019 $ 567 2020 160

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Summary of Time Certificates of Deposit Accounts Included in Total Deposits and Their Remaining Maturities	The following table reflects time certificates of deposit accounts included in total deposits and their remaining maturities at December 31, 2018 : Time deposits maturing: 2019 $ 155,670 2020 100,360 2021 62,480 2022 62,204 2023 6,814 Thereafter 7,909 $ 395,437

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Schedule of Advances From Federal Home Loan Banks	At December 31, 2018 and 2017 , advances from the FHLB are as follows: 2018 2017 Maturities range from 6/28/2019 through 2/11/2033; rates fixed at a range of 1.17% to 5.24%; weighted average rate is 2.06% as of December 31, 2018. Maturities range from 9/6/2018 through 2/11/2033; rates fixed at a range of 1.05% to 5.24%; weighted average rate is 1.81% as of December 31, 2017. $ 245,117 $ 222,943 Open Repo borrowing at an interest rate of 1.54% at December 31, 2017. The maximum amount of the Open Repo borrowing available is $150,000. 0 34,416 Total $ 245,117 $ 257,359
Schedule of Maturities of Borrowed Funds	The following is a schedule of maturities of all borrowed funds as of December 31, 2018 : 2019 $ 47,562 2020 37,505 2021 33,740 2022 72,931 2023 51,244 Thereafter 72,755 Total borrowed funds $ 315,737

Interest Rate Swaps (Tables)

Interest Rate Swaps (Tables)	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Amounts and Locations of Activity Related to Interest Rate Swaps	The following tables provide information about the amounts and locations of activity related to the interest rate swaps designated as cash flow hedges within the Corporation’s consolidated balance sheet and statement of income as of December 31, 2018 and 2017 and for the years ended December 31, 2018 , 2017 , and 2016 : As of December 31 Liability Derivative Balance Sheet Fair value Location 2018 2017 Interest rate contract Accrued interest payable and other liabilities $(201) $(161) For the Year Ended December 31, 2018 (a) (b) (c) (d) (e) Interest rate contract $(32) Interest expense – subordinated debentures $(164) Other $0 For the Year Ended December 31, 2017 Interest rate contract $194 Interest expense – subordinated $(288) Other $0 For the Year Ended December 31, 2016 Interest rate contract $180 Interest expense – subordinated debentures $(340) Other $0 (a) Amount of Gain or (Loss) Recognized in Other Comprehensive Loss on Derivative (Effective Portion), net of tax (b) Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Loss into Income (Effective Portion) (c) Amount of Loss Reclassified from Accumulated Other Comprehensive Loss into Income (Effective Portion) (d) Location of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing) (e) Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)
Amounts and Locations of Activity Related to Back-to-Back Interest Rate Swaps	The following table provides information about the amounts and locations of activity related to the back-to-back interest rate swaps within the Corporation’s consolidated balance sheet as of December 31, 2018 and 2017 : Notional Amount Average Maturity (in years) Weighted Average Fixed Rate Weighted Average Variable Rate Fair Value December 31, 2018 3 rd Party interest rate swaps $ 23,152 7.2 3.85 % 1 month LIBOR + 2.24% 485 (a) Customer interest rate swaps (23,152 ) 7.2 3.85 % 1 month LIBOR + 2.24% (485) (b) December 31, 2017 3 rd Party interest rate swaps $ 11,848 8.0 4.51 % 1 month LIBOR + 2.37% 149 (a) Customer interest rate swaps (11,848 ) 8.0 4.51 % 1 month LIBOR + 2.37% (149) (b) (a) Reported in accrued interest receivable and other assets within the consolidated balance sheets (b) Reported in accrued interest payable and other liabilities within the consolidated balance sheets

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Summary of Income Tax Expense	The following is a summary of income tax expense for the years ended December 31, 2018 , 2017 , and 2016 : 2018 2017 2016 Current – federal $ 7,520 $ 8,978 $ 6,181 Current – state 66 29 (33 ) Deferred – federal (1,076 ) 376 1,023 Deferred tax adjustment related to reduction in U.S. federal statutory income tax rate 0 3,009 0 Income tax expense $ 6,510 $ 12,392 $ 7,171
Reconciliation of Income Tax Attributable to Pre-Tax Income at Federal Statutory Tax Rates to Income Tax Expense	The reconciliation of income tax attributable to pre-tax income at the federal statutory tax rates to income tax expense is as follows: 2018 % 2017 % 2016 % Tax at statutory rate $ 8,448 21.0 $ 12,688 35.0 $ 9,699 35.0 Tax exempt income, net (1,403 ) (3.5 ) (1,899 ) (5.2 ) (2,054 ) (7.4 ) Deferred tax adjustment related to reduction in U.S. federal statutory income tax rate 0 0.0 3,009 8.3 0 0.0 Bank owned life insurance (296 ) (0.7 ) (581 ) (1.6 ) (379 ) (1.3 ) Merger costs 0 0.0 0 0.0 170 0.6 Other (239 ) (0.6 ) (825 ) (2.3 ) (265 ) (1.0 ) Income tax expense $ 6,510 16.2 $ 12,392 34.2 $ 7,171 25.9
Components of Net Deferred Tax Asset	The following table sets forth deferred taxes as of December 31, 2018 and 2017. As a result of the Tax Cuts and Jobs Act (discussed below), deferred taxes as of December 31, 2018 and 2017 are based on the enacted U.S. statutory federal income tax rate of 21% . 2018 2017 Deferred tax assets: Allowance for loan losses $ 3,088 $ 2,840 Fair value adjustments – business combination 966 1,135 Deferred compensation 2,056 1,903 Net operating loss carryover 0 71 Post-retirement benefits 836 892 Unrealized loss on interest rate swap 42 34 Nonaccrual loan interest 589 390 Accrued expenses 1,254 699 Deferred fees and costs 588 598 Unrealized loss on securities available for sale 940 0 Other 366 344 10,725 8,906 Deferred tax liabilities: Unrealized gain on securities available for sale 0 126 Premises and equipment 1,459 1,413 Unrealized gain on trading securities 63 156 Intangibles – section 197 2,414 2,593 Mortgage servicing rights 314 291 Other 178 78 4,428 4,657 Net deferred tax asset $ 6,297 $ 4,249

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Unfunded Post Retirement Benefits Plan	The following table sets forth the change in the benefit obligation of the plan as of and for the years ended December 31, 2018 , 2017 , and 2016 : 2018 2017 2016 Benefit obligation at beginning of year $ 2,740 $ 3,409 $ 3,066 Interest cost 83 114 108 Service cost 87 103 103 Actual claims (79 ) (78 ) (151 ) Actuarial (gain) loss (404 ) (808 ) 283 Benefit obligation at end of year $ 2,427 $ 2,740 $ 3,409
Accumulated Other Comprehensive Income	Amounts recognized in accumulated other comprehensive income at December 31, 2018 and 2017 consist of: 2018 2017 Net actuarial loss $ (383 ) $ (871 ) Tax effect 79 183 $ (304 ) $ (688 )
Recognized Net Periodic Benefit Cost and Other Comprehensive Income	The following table sets forth the components of net periodic benefit cost and other amounts recognized in other comprehensive income: 2018 2017 2016 Service cost $ 87 $ 103 $ 103 Interest cost 83 114 108 Net amortization of transition obligation and actuarial loss 84 192 184 Net periodic benefit cost 254 409 395 Net (gain) loss (404 ) (808 ) 282 Amortization of loss (84 ) (192 ) (184 ) Total recognized in other comprehensive income (488 ) (1,000 ) 98 Total recognized in net periodic benefit cost and other comprehensive income $ (234 ) $ (591 ) $ 493

Deferred Compensation Plans (Ta

Deferred Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2018
Postemployment Benefits [Abstract]
Summary of Changes in Deferred Compensation Plan Liability	A summary of changes in the deferred compensation plan liability follows: 2018 2017 2016 Balance, beginning of year $ 2,503 $ 2,080 $ 1,226 Deferrals, dividends, and changes in fair value recorded as an expense 64 444 936 Deferred compensation payments (159 ) (21 ) (82 ) Balance, end of year $ 2,408 $ 2,503 $ 2,080

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Changes in Nonvested Restricted Stock Awards	A summary of changes in nonvested restricted stock awards follows: Shares Weighted-average Grant Date Fair Value Nonvested at January 1, 2018 94,472 $ 20.79 Granted 24,508 26.92 Forfeited (361 ) 26.19 Vested (42,730 ) 19.87 Nonvested at December 31, 2018 75,889 $ 23.20

Capital Requirements and Rest_2

Capital Requirements and Restrictions on Retained Earnings (Tables)	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Summary of Actual and Required Capital Amounts and Ratios	Actual and required capital amounts and ratios are presented below as of December 31, 2018 and 2017 . The capital adequacy ratio includes the capital conservation buffer. Actual For Capital Adequacy Purposes To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio December 31, 2018 Total Capital to Risk Weighted Assets Consolidated $ 319,340 13.21 % $ 238,719 9.875 % N/A Bank $ 302,627 12.59 % $ 237,325 9.875 % $ 240,329 10.00 % Tier 1 (Core) Capital to Risk Weighted Assets Consolidated $ 249,636 10.33 % $ 190,371 7.875 % N/A Bank $ 284,722 11.85 % $ 189,259 7.875 % $ 192,263 8.00 % Common equity Tier 1 to Risk Weighted Assets Consolidated $ 229,636 9.50 % $ 154,110 6.375 % N/A Bank $ 277,343 11.54 % $ 153,210 6.375 % $ 156,214 6.50 % Tier 1 (Core) Capital to Average Assets Consolidated $ 249,636 7.87 % $ 126,882 4.00 % N/A Bank $ 284,722 9.12 % $ 124,903 4.00 % $ 156,128 5.00 % December 31, 2017 Total Capital to Risk Weighted Assets Consolidated $ 297,708 14.32 % $ 192,341 9.25 % N/A Bank $ 279,704 13.58 % $ 190,513 9.25 % $ 205,960 10.00 % Tier 1 (Core) Capital to Risk Weighted Assets Consolidated $ 228,015 10.97 % $ 150,754 7.25 % N/A Bank $ 261,643 12.70 % $ 149,321 7.25 % $ 164,768 8.00 % Common equity Tier 1 to Risk Weighted Assets Consolidated $ 208,015 10.00 % $ 119,563 5.75 % N/A Bank $ 254,264 12.35 % $ 118,427 5.75 % $ 133,874 6.50 % Tier 1 (Core) Capital to Average Assets Consolidated $ 228,015 8.45 % $ 107,969 4.00 % N/A Bank $ 261,643 9.80 % $ 106,798 4.00 % $ 133,498 5.00 %

Off-Balance Sheet Activities (T

Off-Balance Sheet Activities (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of Off-Balance Sheet Risks	The contractual amount of financial instruments with off-balance sheet risk was as follows at December 31, 2018 and 2017 : 2018 2017 Fixed Rate Variable Rate Fixed Rate Variable Rate Commitments to make loans $ 46,265 $ 191,803 $ 46,701 $ 196,449 Unused lines of credit 14,390 429,456 14,565 373,618 Standby letters of credit 14,831 1,479 13,706 1,524

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis are as follows at December 31, 2018 and 2017 : Fair Value Measurements at December 31, 2018 Using Description Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Securities Available For Sale: U.S. Government sponsored entities $ 132,694 $ 0 $ 132,694 $ 0 States and political subdivisions 136,031 0 136,031 0 Residential and multi-family mortgage 206,053 0 206,053 0 Corporate notes and bonds 11,777 0 11,777 0 Pooled SBA 29,374 0 29,374 0 Other 934 934 0 0 Total Securities Available For Sale $ 516,863 $ 934 $ 515,929 $ 0 Interest rate swaps $ 485 $ 0 $ 485 $ 0 Trading Securities: Corporate equity securities $ 5,828 $ 5,828 $ 0 $ 0 Mutual funds 1,058 1,058 0 0 Certificates of deposit 268 268 0 0 Corporate notes and bonds 581 581 0 0 U.S. Government sponsored entities 51 0 51 0 Total Trading Securities $ 7,786 $ 7,735 $ 51 $ 0 Liabilities Interest rate swaps $ (686 ) $ 0 $ (686 ) $ 0 Fair Value Measurements at December 31, 2017 Using Description Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Securities Available For Sale: U.S. Government sponsored entities $ 108,148 $ 0 $ 108,148 $ 0 States and political subdivisions 137,723 0 137,723 0 Residential and multi-family mortgage 109,636 0 109,636 0 Corporate notes and bonds 17,200 0 17,200 0 Pooled SBA 36,040 0 36,040 0 Other 962 962 0 0 Total Securities Available For Sale $ 409,709 $ 962 $ 408,747 $ 0 Interest rate swaps $ 149 $ 0 $ 149 $ 0 Trading Securities: Corporate equity securities $ 5,125 $ 5,125 $ 0 $ 0 Mutual funds 1,499 1,499 0 0 Certificates of deposit 220 220 0 0 Corporate notes and bonds 254 254 0 0 U.S. Government sponsored entities 52 0 52 0 Total Trading Securities $ 7,150 $ 7,098 $ 52 $ 0 Liabilities Interest rate swaps $ (310 ) $ 0 $ (310 ) $ 0
Securities Available for Sale Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3)	The table below presents a reconciliation of the fair value of securities available for sale measured on a recurring basis using significant unobservable inputs (Level 3) for the year ended December 31, 2017 : Pooled trust preferred Balance, January 1, 2017 $ 2,049 Total gains or (losses): Included in other comprehensive income (loss) 134 Sale of available-for-sale securities (2,183 ) Balance, December 31, 2017 $ 0
Assets and Liabilities Measured at Fair Value on Non-Recurring Basis	Assets and liabilities measured at fair value on a non-recurring basis are as follows at December 31, 2018 and 2017 : Fair Value Measurements at December 31, 2018 Using Description Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Impaired loans: Commercial, industrial, and agricultural $ 783 0 0 $ 783 Commercial mortgages $ 224 0 0 $ 224 Fair Value Measurements at December 31, 2017 Using Description Total Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Assets: Impaired loans: Commercial mortgages $ 11 0 0 $ 11
Quantitative Information about Level 3 Fair Value Measurements for Financial Instruments Measured at Fair Value on Non Recurring Basis	The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at December 31, 2018 : Fair value Valuation Technique Unobservable Inputs Range (Weighted Average) Impaired loans – commercial, industrial, and agricultural $783 Valuation of third party appraisal on underlying collateral Loss severity rates 55%-60% (57%) Impaired loans – commercial mortgages $224 Valuation of third party appraisal on underlying collateral Loss severity rates 15%-39% (37%) The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at December 31, 2017 : Fair value Valuation Technique Unobservable Inputs Range (Weighted Average) Impaired loans – commercial mortgages $11 Valuation of third party appraisal on underlying collateral Loss severity rates 10% (10%)
Carrying Amount and Fair Value of Financial Instruments	The following table presents the carrying amount and fair value of financial instruments at December 31, 2018 : Carrying Amount Fair Value Measurement Using: Total Fair Value Level 1 Level 2 Level 3 ASSETS Cash and cash equivalents $ 45,563 $ 45,563 $ 0 $ 0 $ 45,563 Securities available for sale 516,863 934 515,929 0 516,863 Trading securities 7,786 7,735 51 0 7,786 Loans held for sale 367 0 368 0 368 Net loans 2,454,853 0 0 2,433,417 2,433,417 FHLB and other equity interests 24,508 n/a n/a n/a n/a Interest rate swaps 485 0 485 0 485 Accrued interest receivable 10,843 6 3,368 7,469 10,843 LIABILITIES Deposits $ (2,610,786 ) $ (2,215,349 ) $ (397,370 ) $ 0 $ (2,612,719 ) FHLB and other borrowings (245,117 ) 0 (242,592 ) 0 (242,592 ) Subordinated debentures (70,620 ) 0 (65,794 ) 0 (65,794 ) Interest rate swaps (686 ) 0 (686 ) 0 (686 ) Accrued interest payable (863 ) 0 (863 ) 0 (863 ) The following table presents the carrying amount and fair value of financial instruments at December 31, 2017 : Carrying Amount Fair Value Measurement Using: Total Fair Value Level 1 Level 2 Level 3 ASSETS Cash and cash equivalents $ 35,345 $ 35,345 $ 0 $ 0 $ 35,345 Securities available for sale 409,709 962 408,747 0 409,709 Trading securities 7,150 7,098 52 0 7,150 Loans held for sale 852 0 853 0 853 Net loans 2,126,266 0 0 2,126,824 2,126,824 FHLB and other equity interests 21,517 n/a n/a n/a n/a Interest rate swaps 149 0 149 0 149 Accrued interest receivable 9,254 6 2,651 6,597 9,254 LIABILITIES Deposits $ (2,167,815 ) $ (1,802,844 ) $ (362,756 ) $ 0 $ (2,165,600 ) FHLB and other borrowings (257,359 ) 0 (257,361 ) 0 (257,361 ) Subordinated debentures (70,620 ) 0 (63,575 ) 0 (63,575 ) Interest rate swaps (310 ) 0 (310 ) 0 (310 ) Accrued interest payable (554 ) 0 (554 ) 0 (554 )

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue Derived from Contracts with Customers	The following table presents the Corporation's Non-Interest Income by revenue stream and reportable segment for the years ended December 31, 2018 and 2017 . Items outside the scope of ASC 606 are noted as such. December 31, 2018 December 31, 2017 (2) Non-interest Income Service charges on deposit accounts $ 5,759 $ 4,809 Wealth and asset management fees 4,172 3,724 Mortgage banking (1) 1,019 906 Card processing and interchange income 4,261 3,763 Net realized gains on available-for-sale securities (1) 0 1,543 Other income 5,512 6,690 Total non-interest income $ 20,723 $ 21,435 (1) Not within scope of ASU 2014-9 (2) The Corporation elected the modified retrospective approach of adoption; therefore, prior period balances are presented under legacy GAAP and may not be comparable to current year presentation.

Parent Company Only Financial_2

Parent Company Only Financial Information (Tables)	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
Condensed Balance Sheets	CONDENSED BALANCE SHEETS December 31, 2018 2017 Assets Cash $ 355 $ 1,556 Trading securities 623 580 Investment in bank subsidiary 310,574 290,156 Investment in non-bank subsidiaries 20,686 21,781 Deferreds and current receivable 1,459 2,055 Other assets 1,749 2,059 Total assets $ 335,446 $ 318,187 Liabilities Borrowings from subsidiary $ 200 $ 1,400 Subordinated debentures 70,620 70,620 Other liabilities 1,796 2,257 Total liabilities 72,616 74,277 Stockholders' equity 262,830 243,910 Total liabilities and stockholders' equity $ 335,446 $ 318,187
Condensed Statements of Income	CONDENSED STATEMENTS OF INCOME Year Ended December 31, Income: 2018 2017 2016 Dividends from: Bank subsidiary $ 12,029 $ 8,840 $ 8,700 Non-bank subsidiaries 3,000 2,250 1,200 Other 212 220 230 Total income 15,241 11,310 10,130 Expenses (5,184 ) (4,957 ) (2,611 ) Income before income taxes and equity in undistributed net income of subsidiaries: 10,057 6,353 7,519 Income tax benefit 1,116 1,614 813 Equity in undistributed net income of bank subsidiary 24,031 17,430 13,184 Distributions in excess of net income of non-bank subsidiaries (1,485 ) (1,537 ) (976 ) Net income $ 33,719 $ 23,860 $ 20,540
Condensed Statements of Cash Flows	CONDENSED STATEMENTS OF CASH FLOWS Year Ended December 31, 2018 2017 2016 Net income Adjustments to reconcile net income to net cash provided by $ 33,719 $ 23,860 $ 20,540 operating activities: Equity in undistributed net income of bank subsidiary (24,031 ) (17,430 ) (13,184 ) Distributions in excess of net income of non–bank subsidiaries 1,485 1,537 976 Net unrealized gains on trading securities 0 (12 ) (58 ) Decrease (increase) in other assets 872 (549 ) (1,277 ) Increase in other liabilities 1,045 791 1,645 Net cash provided by operating activities 13,090 8,197 8,642 Cash flows from investing activities Investment in non-bank subsidiaries (400 ) 0 0 Investment in bank subsidiaries 0 (15,400 ) (49,223 ) Net cash used in investing activities (400 ) (15,400 ) (49,223 ) Cash flows from financing activities: Dividends paid (10,237 ) (10,094 ) (9,546 ) Proceeds from issuance of long term debt 0 0 50,000 Purchase of treasury stock (2,454 ) (1,877 ) (44 ) Net proceeds from issuance of common stock 0 19,294 0 Net advance (to) from subsidiary (1,200 ) 0 50 Net cash provided by (used in) financing activities (13,891 ) 7,323 40,460 Net increase (decrease) in cash (1,201 ) 120 (121 ) Cash beginning of year 1,556 1,436 1,557 Cash end of year $ 355 $ 1,556 $ 1,436

Other Comprehensive Income (Tab

Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2018
Equity [Abstract]
Components of Other Comprehensive Income and Related Tax Effects	Other comprehensive income components and related tax effects were as follows for the years ended December 31, 2018 , 2017 , and 2016 : 2018 2017 2016 Unrealized holding losses on available for sale securities $ (5,073 ) $ (136 ) $ (1,838 ) Less reclassification adjustment for gains recognized in earnings 0 (160 ) (83 ) Net unrealized losses (5,073 ) (296 ) (1,921 ) Tax effect 1,066 104 672 Net-of-tax amount (4,007 ) (192 ) (1,249 ) Unrealized holding gains (losses) on available for sale securities for which a portion of an other-than-temporary impairment has been recognized in earnings 0 134 (442 ) Less reclassification adjustment for gains recognized in earnings 0 (1,383 ) (922 ) Net unrealized gains 0 (1,249 ) (1,364 ) Tax effect 0 437 477 Net-of-tax amount 0 (812 ) (887 ) Actuarial gain (loss) on postemployment health care plan 404 808 (282 ) Net amortization of transition obligation and actuarial gain 84 192 184 Net unrealized gain (loss) on postemployment health care plan 488 1,000 (98 ) Tax effect (102 ) (175 ) 34 Net-of-tax amount 386 825 (64 ) Unrealized gain (loss) on interest rate swap (204 ) 10 (63 ) Less reclassification adjustment for losses recognized in earnings 164 288 340 Net unrealized gain (loss) (40 ) 298 277 Tax effect 8 (104 ) (97 ) Net-of-tax amount (32 ) 194 180 Other comprehensive income (loss) $ (3,653 ) $ 15 $ (2,020 )
Summary of Change in Accumulated Other Comprehensive Income (Loss)	The following is a summary of the change in the accumulated other comprehensive income (loss) balance, net of tax, for the years ended December 31, 2018 , 2017 , and 2016 . Balance 12/31/17 Comprehensive Income (Loss) Reclassification of Disproportionate Tax Effect Balance 12/31/18 Unrealized gains (losses) on securities available for sale $ 473 $ (4,007 ) $ 0 $ (3,534 ) Unrealized gain (loss) on postretirement benefits plan (690 ) 386 0 (304 ) Unrealized loss on interest rate swap (126 ) (32 ) 0 (158 ) Total $ (343 ) $ (3,653 ) $ 0 $ (3,996 ) Balance 12/31/16 Comprehensive Income (Loss) Reclassification of Disproportionate Tax Effect Balance 12/31/17 Unrealized gains (losses) on securities available for sale $ 1,393 $ (1,004 ) $ 84 $ 473 Unrealized gain (loss) on postretirement benefits plan (1,217 ) 825 (298 ) (690 ) Unrealized loss on interest rate swap (297 ) 194 (23 ) (126 ) Total $ (121 ) $ 15 $ (237 ) $ (343 ) Balance 1/1/16 Comprehensive Income (Loss) Reclassification of Disproportionate Tax Effect Balance 12/31/16 Unrealized gains (losses) on securities available for sale $ 3,529 $ (2,136 ) $ 0 $ 1,393 Unrealized gain (loss) on postretirement benefits plan (1,153 ) (64 ) 0 (1,217 ) Unrealized loss on interest rate swap (477 ) 180 0 (297 ) Total $ 1,899 $ (2,020 ) $ 0 $ (121 )

Quarterly Financial Data (Una_2

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Unaudited Quarterly Results of Operations	The table below sets forth the Corporation's unaudited condensed consolidated quarterly results of operations data for the years ended December 31, 2018 and December 31, 2017 (in thousands, except per share data). In the opinion of management, all adjustments (consisting of normal recurring accruals) that are necessary for a fair presentation of the quarterly results have been reflected in the data. It is also management's opinion, however, that quarterly results of operations data are not indicative of the financial results to be achieved in succeeding years or quarters. In order to obtain a more accurate indication of performance, one should review the financial and operating results, changes in stockholders' equity and cash flows for a period of several years. Quarters Ended in 2018 Quarters Ended in 2017 Mar. 31 June 30 Sept. 30 Dec. 31 Mar. 31 June 30 Sept. 30 Dec. 31 Total interest and dividend income $ 29,387 $ 32,099 $ 34,040 $ 36,344 $ 25,104 $ 27,003 $ 28,069 $ 28,698 Net interest income 24,100 25,826 26,878 28,116 21,202 22,989 23,517 23,801 Provision for loan losses 1,631 1,905 1,095 1,441 1,016 1,134 1,400 3,105 Non-interest income 4,751 5,606 5,933 4,433 5,773 5,089 5,032 5,541 Non-interest expense 18,999 19,543 20,794 20,006 17,034 17,797 17,618 17,588 Net income 7,097 8,441 9,236 8,945 6,480 6,683 7,246 3,451 Net income per share, basic 0.46 0.55 0.60 0.59 0.43 0.44 0.47 0.23 Net income per share, diluted 0.46 0.55 0.60 0.59 0.43 0.44 0.47 0.23

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Detail)	2 Months Ended	12 Months Ended
	Mar. 07, 2019USD ($)lease	Dec. 31, 2018USD ($)Segmentshares	Dec. 31, 2017USD ($)shares	Dec. 31, 2016USD ($)shares	Jan. 01, 2019USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of reportable operating segment | Segment		1
Period of delinquent loan		90 days
Advertising costs		$ 2,345,000	$ 2,243,000	$ 1,799,000
Number of nonqualified options or restricted stock for key employees and independent director (in shares) | shares		500,000
Unrecognized compensation cost related to nonvested stock options granted		$ 0	$ 0
Stock options (in shares) | shares		0	0	0
Shares granted (in shares) | shares		24,508
Average amount of non interest bearing reserve with federal reserve bank		$ 50,000	$ 50,000
Reclassification of certain tax effects from accumulated other comprehensive income to retained earnings			$ 0
Key Employees
Summary Of Significant Accounting Policies [Line Items]
Starting period of vesting of stock based award		1 year
Aggregate percentage of stock based awards to be matured		100.00%
Independent Directors
Summary Of Significant Accounting Policies [Line Items]
Stock incentive plan, vesting per year		33.33%
Starting period of vesting of stock based award		1 year
Aggregate percentage of stock based awards to be matured		100.00%
Award vesting period		3 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Period of consumer loans charged off		180 days
Premises and Equipment | Minimum
Summary Of Significant Accounting Policies [Line Items]
Useful lives of premises and equipment		3 years
Premises and Equipment | Maximum
Summary Of Significant Accounting Policies [Line Items]
Useful lives of premises and equipment		39 years
Furniture, Fixtures and Equipment | Minimum
Summary Of Significant Accounting Policies [Line Items]
Useful lives of premises and equipment		3 years
Furniture, Fixtures and Equipment | Maximum
Summary Of Significant Accounting Policies [Line Items]
Useful lives of premises and equipment		10 years
Buildings and Building Improvements | Minimum
Summary Of Significant Accounting Policies [Line Items]
Useful lives of premises and equipment		15 years
Buildings and Building Improvements | Maximum
Summary Of Significant Accounting Policies [Line Items]
Useful lives of premises and equipment		39 years
Core Deposit | FC Banc Corp
Summary Of Significant Accounting Policies [Line Items]
Amortization of intangible assets		7 years
Core Deposit | Lake National Bank
Summary Of Significant Accounting Policies [Line Items]
Amortization of intangible assets		4 years
Performance Based Restricted Stock Awards
Summary Of Significant Accounting Policies [Line Items]
Shares granted (in shares) | shares		10,468	5,306
Performance Based Restricted Stock Awards | Maximum
Summary Of Significant Accounting Policies [Line Items]
Shares granted (in shares) | shares		10,468	5,306
Restricted Stock
Summary Of Significant Accounting Policies [Line Items]
Shares granted (in shares) | shares		40,108	39,673	52,750
Compensation expense restricted stock awards		$ 1,545,000	$ 928,000	$ 820,000
Accounting Standards Update 2018-02
Summary Of Significant Accounting Policies [Line Items]
Reclassification of certain tax effects from accumulated other comprehensive income to retained earnings			$ 237,000
Tranche One | Key Employees
Summary Of Significant Accounting Policies [Line Items]
Stock incentive plan, vesting per year		33.33%
Award vesting period		3 years
Tranche Two | Key Employees
Summary Of Significant Accounting Policies [Line Items]
Stock incentive plan, vesting per year		25.00%
Award vesting period		4 years
Subsequent Event | Accounting Standards Update 2016-02
Summary Of Significant Accounting Policies [Line Items]
Number of leases | lease	2
Scenario, Forecast | Accounting Standards Update 2016-02
Summary Of Significant Accounting Policies [Line Items]
Right-of-use asset					$ 12,500,000
Prepaid rent					800,000
Lease liability					$ 13,300,000
Scenario, Forecast | Subsequent Event | Accounting Standards Update 2016-02
Summary Of Significant Accounting Policies [Line Items]
Right-of-use asset	$ 5,000,000
Lease liability	$ 5,000,000

Business Combination and Bran_2

Business Combination and Branch Sale (Detail) $ / shares in Units, $ in Thousands	May 19, 2017USD ($)	Dec. 30, 2015USD ($)location$ / shares	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Business Acquisition [Line Items]
Merger costs			$ 0	$ 0	$ 486
Gain from sale of branch			$ 0	536	$ 0
Lake National Bank
Business Acquisition [Line Items]
Share price (in dollars per share) | $ / shares		$ 22.50
Fair value of total consideration transferred		$ 24,750
Merger costs				$ 486
First Federal Community Bank
Business Acquisition [Line Items]
Loans transferred	$ 7,800
Fixed assets	100
Deposits transferred	7,400
Gain from sale of branch	$ 536
Deposit premium	8.00%
Mentor, Ohio | Lake National Bank
Business Acquisition [Line Items]
Number of branch locations | location		2

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Antidilutive shares excluded from the diluted earnings per share calculations (in shares)	0	0	0

Earnings Per Share - Computatio

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Basic earnings per common share computation
Net income per consolidated statements of income	$ 8,945	$ 9,236	$ 8,441	$ 7,097	$ 3,451	$ 7,246	$ 6,683	$ 6,480	$ 33,719	$ 23,860	$ 20,540
Net earnings allocated to participating securities									(150)	(135)	(129)
Net earnings allocated to common stock									$ 33,569	$ 23,725	$ 20,411
Weighted average common shares outstanding, including shares considered participating securities (in shares)									15,274	15,212	14,457
Less: Average participating securities (in shares)									(64)	(80)	(82)
Weighted average shares (in shares)									15,210	15,132	14,375
Basic earnings per common share (in dollars per share)	$ 0.59	$ 0.60	$ 0.55	$ 0.46	$ 0.23	$ 0.47	$ 0.44	$ 0.43	$ 2.21	$ 1.57	$ 1.42
Diluted earnings per common share computation
Net earnings allocated to common stock									$ 33,569	$ 23,725	$ 20,411
Weighted average common shares outstanding for basic earnings per common share (in shares)									15,210	15,132	14,375
Add: Dilutive effects of assumed exercises of stock options (in shares)									0	0	0
Weighted average shares and dilutive potential common shares (in shares)									15,210	15,132	14,375
Diluted earnings per common share (in dollars per share)	$ 0.59	$ 0.60	$ 0.55	$ 0.46	$ 0.23	$ 0.47	$ 0.44	$ 0.43	$ 2.21	$ 1.57	$ 1.42
Distributed earnings allocated to common stock
Basic earnings per common share computation
Net earnings allocated to common stock									$ 10,186	$ 10,030	$ 9,480
Undistributed earnings allocated to common stock
Basic earnings per common share computation
Net earnings allocated to common stock									$ 23,383	$ 13,695	$ 10,931

Securities - Securities Availab

Securities - Securities Available for Sale (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Amortized cost	$ 521,337	$ 409,110
Unrealized gains	2,853	4,798
Unrealized losses	(7,327)	(4,199)
Fair value	516,863	409,709
U.S. Gov’t sponsored entities
Debt Securities, Available-for-sale [Line Items]
Amortized cost	134,010	108,578
Unrealized gains	254	478
Unrealized losses	(1,570)	(908)
Fair value	132,694	108,148
State & political subdivisions
Debt Securities, Available-for-sale [Line Items]
Amortized cost	134,662	134,428
Unrealized gains	1,942	3,609
Unrealized losses	(573)	(314)
Fair value	136,031	137,723
Residential & multi-family mortgage
Debt Securities, Available-for-sale [Line Items]
Amortized cost	209,126	111,214
Unrealized gains	500	304
Unrealized losses	(3,573)	(1,882)
Fair value	206,053	109,636
Corporate notes & bonds
Debt Securities, Available-for-sale [Line Items]
Amortized cost	12,356	17,610
Unrealized gains	22	52
Unrealized losses	(601)	(462)
Fair value	11,777	17,200
Pooled SBA
Debt Securities, Available-for-sale [Line Items]
Amortized cost	30,163	36,260
Unrealized gains	135	355
Unrealized losses	(924)	(575)
Fair value	29,374	36,040
Other
Debt Securities, Available-for-sale [Line Items]
Amortized cost	1,020	1,020
Unrealized gains	0	0
Unrealized losses	(86)	(58)
Fair value	$ 934	$ 962

Securities - Additional Informa

Securities - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018USD ($)security	Dec. 31, 2017USD ($)security	Dec. 31, 2016USD ($)security
Debt Securities, Available-for-sale [Line Items]
Number of securities holdings | security	0	0
Shareholders equity, percentage	10.00%	10.00%
Amortized cost	$ 521,337,000	$ 409,110,000
Proceeds	0	16,340,000	$ 4,420,000
Tax provision related to net realized gains	0	540,000	352,000
Proceeds from sale of trading securities	455,000	1,091,000	540,000
Net realized gains on trading securities	151,000	$ 93,000	$ 70,000
Pooled trust preferred
Debt Securities, Available-for-sale [Line Items]
Number of securities holdings | security		2	2
Amortized cost		$ 800,000	$ 0
Proceeds		1,383,000	$ 922,000
Collateral Pledged
Debt Securities, Available-for-sale [Line Items]
Securities pledged to public deposits	$ 290,717,000	$ 319,575,000

Securities - Trading Securities

Securities - Trading Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	$ 7,786	$ 7,150
Corporate equity securities
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	5,828	5,125
Mutual Funds
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	1,058	1,499
Certificates of deposit
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	268	220
Corporate notes and bonds
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	581	254
U.S. Gov’t sponsored entities
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	$ 51	$ 52

Securities - Securities with Un

Securities - Securities with Unrealized Loss Position (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Less than 12 Months
Fair Value	$ 98,395	$ 106,735
Unrealized Loss	(766)	(771)
12 Months or More
Fair Value	210,530	134,831
Unrealized Loss	(6,561)	(3,428)
Fair Value	308,925	241,566
Unrealized Loss	(7,327)	(4,199)
U.S. Gov’t sponsored entities
Less than 12 Months
Fair Value	14,786	55,696
Unrealized Loss	(41)	(540)
12 Months or More
Fair Value	70,676	34,754
Unrealized Loss	(1,529)	(368)
Fair Value	85,462	90,450
Unrealized Loss	(1,570)	(908)
State & political subdivisions
Less than 12 Months
Fair Value	13,834	15,890
Unrealized Loss	(62)	(69)
12 Months or More
Fair Value	21,080	4,104
Unrealized Loss	(511)	(245)
Fair Value	34,914	19,994
Unrealized Loss	(573)	(314)
Residential & multi-family mortgage
Less than 12 Months
Fair Value	69,015	30,144
Unrealized Loss	(656)	(153)
12 Months or More
Fair Value	87,286	63,699
Unrealized Loss	(2,917)	(1,729)
Fair Value	156,301	93,843
Unrealized Loss	(3,573)	(1,882)
Corporate notes & bonds
Less than 12 Months
Fair Value	0	5,005
Unrealized Loss	0	(9)
12 Months or More
Fair Value	9,759	9,042
Unrealized Loss	(601)	(453)
Fair Value	9,759	14,047
Unrealized Loss	(601)	(462)
Pooled SBA
Less than 12 Months
Fair Value	760	0
Unrealized Loss	(7)	0
12 Months or More
Fair Value	20,795	22,270
Unrealized Loss	(917)	(575)
Fair Value	21,555	22,270
Unrealized Loss	(924)	(575)
Other
Less than 12 Months
Fair Value	0	0
Unrealized Loss	0	0
12 Months or More
Fair Value	934	962
Unrealized Loss	(86)	(58)
Fair Value	934	962
Unrealized Loss	$ (86)	$ (58)

Securities - Roll-Forward of Ot

Securities - Roll-Forward of Other-Than-Temporary Impairment Amount Related to Credit Losses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance of credit losses on debt securities for which a portion of other-than-temporary impairment was recognized in earnings, beginning of period	$ 0	$ 2,071	$ 4,054
Credit losses previously recognized on securities sold during the period	0	(2,071)	(1,983)
Additional credit loss for which other-than-temporary impairment was not previously recognized	0	0	0
Additional credit loss for which other-than-temporary impairment was previously recognized	0	0	0
Balance of credit losses on debt securities for which a portion of other-than-temporary impairment was recognized in earnings, end of period	$ 0	$ 0	$ 2,071

Securities - Schedule of Contra

Securities - Schedule of Contractual Maturity of Securities Available for Sale, Excluding Equity Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Amortized Cost
1 year or less	$ 58,509
1 year – 5 years	146,605
5 years – 10 years	70,984
After 10 years	4,930
Total, Amortized Cost	281,028
Amortized cost	521,337	$ 409,110
Fair Value
1 year or less	58,003
1 year – 5 years	146,111
5 years – 10 years	71,451
After 10 years	4,937
Total, Fair Value	280,502
Securities available for sale	516,863	409,709
Residential & multi-family mortgage
Amortized Cost
Mortgage & asset backed securities, Amortized Cost	209,126
Amortized cost	209,126	111,214
Fair Value
Mortgage & asset backed securities, Fair Value	206,053
Securities available for sale	206,053	109,636
Pooled SBA
Amortized Cost
Mortgage & asset backed securities, Amortized Cost	30,163
Amortized cost	30,163	36,260
Fair Value
Mortgage & asset backed securities, Fair Value	29,374
Securities available for sale	29,374	36,040
Other
Amortized Cost
Mortgage & asset backed securities, Amortized Cost	1,020
Amortized cost	1,020	1,020
Fair Value
Mortgage & asset backed securities, Fair Value	934
Securities available for sale	$ 934	$ 962

Securities - Information Pertai

Securities - Information Pertaining to Security Sales (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Proceeds	$ 0	$ 16,340	$ 4,420
Gross Gains	0	1,614	1,005
Gross Losses	$ 0	$ 71	$ 0

Loans - Schedule of Net Loans (

Loans - Schedule of Net Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Loan Portfolio By Loan Grade [Line Items]
Loans	$ 2,479,348	$ 2,149,848
Less: unearned discount	(4,791)	(3,889)
allowance for loan losses	(19,704)	(19,693)
Net loans	2,454,853	2,126,266
Commercial, industrial, and agricultural
Loan Portfolio By Loan Grade [Line Items]
Loans	916,297	704,606
Net loans	916,297	704,606
Commercial mortgages
Loan Portfolio By Loan Grade [Line Items]
Loans	697,776	644,597
Net loans	697,776	644,597
Residential real estate
Loan Portfolio By Loan Grade [Line Items]
Loans	771,309	713,347
Consumer
Loan Portfolio By Loan Grade [Line Items]
Loans	86,035	80,193
Credit cards
Loan Portfolio By Loan Grade [Line Items]
Loans	7,623	6,753
Overdrafts
Loan Portfolio By Loan Grade [Line Items]
Loans	$ 308	$ 352

Loans - Additional Information

Loans - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018USD ($)loan	Dec. 31, 2017USD ($)loan	Dec. 31, 2016USD ($)loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net unamortized loan fees	$ 3,175,000	$ 3,157,000
Percentage of comprised loan, commercial, industrial and agricultural loans	37.00%	33.00%
Percentage of comprised loan, commercial mortgage loans	28.00%	30.00%
Percentage of loan-to-value to business equipment (up to)	80.00%
Percentage of loan-to-value to accounts receivable (up to)	75.00%
Percentage of loan-to-value to business inventory (up to)	60.00%
Percentage of loan-to-value to real estate (up to)	85.00%
Percentage of residential real estate loan in portfolio	31.00%	33.00%
Allowance for loan losses, period increase (decrease)	$ 351,000	$ 4,024,000	$ 0
Minimum period to be considered for loan to have defaulted	90 days
Principal balances forgiven in connection with loan restructuring	$ 0	$ 0
Number of loans | loan	25	20
Modified in a troubled debt restructuring	$ 14,626,000	$ 17,303,000
Charge-offs	$ 6,593,000	$ 4,077,000	$ 4,961,000
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum percentage of consumer loan and credit card in portfolio	4.00%	4.00%
Reduction in stated interest rate modification having loan range period	18 years
Extension of maturity date modification having loan range period	18 years
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reduction in stated interest rate modification having loan range period	4 years
Extension of maturity date modification having loan range period	4 years
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans | loan		4	1
Modified in a troubled debt restructuring		$ 2,750,000	$ 109,000
Charge-offs		$ 0	$ 0
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans | loan	5	2
Modified in a troubled debt restructuring	$ 1,677,000	$ 6,421,000
Additional provision for loan losses	351,000	3,895,000
Charge-offs	$ 0	$ 0
Troubled Debt Restructuring, Debtor, Prior Period | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans | loan	1
Additional provision for loan losses	$ 1,847,000
Charge-offs	$ 3,336,000

Loans - Allowance for Loan Loss

Loans - Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Balance	$ 19,693	$ 16,330	$ 16,737
Charge-offs	(6,593)	(4,077)	(4,961)
Recoveries	532	785	405
Provision for loan losses	6,072	6,655	4,149
Allowance for loan losses, Ending Balance	19,704	19,693	16,330
Commercial, industrial, and agricultural
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Balance	6,160	5,428	6,035
Charge-offs	(253)	(544)	(601)
Recoveries	171	235	89
Provision for loan losses	1,263	1,041	(95)
Allowance for loan losses, Ending Balance	7,341	6,160	5,428
Commercial mortgages
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Balance	9,007	6,753	5,605
Charge-offs	(3,337)	(116)	(201)
Recoveries	30	197	8
Provision for loan losses	1,790	2,173	1,341
Allowance for loan losses, Ending Balance	7,490	9,007	6,753
Residential real estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Balance	2,033	1,653	2,475
Charge-offs	(315)	(466)	(499)
Recoveries	67	78	93
Provision for loan losses	371	768	(416)
Allowance for loan losses, Ending Balance	2,156	2,033	1,653
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Balance	2,179	2,215	2,371
Charge-offs	(2,279)	(2,555)	(3,324)
Recoveries	141	161	122
Provision for loan losses	2,336	2,358	3,046
Allowance for loan losses, Ending Balance	2,377	2,179	2,215
Credit cards
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Balance	120	93	90
Charge-offs	(90)	(144)	(96)
Recoveries	33	27	22
Provision for loan losses	40	144	77
Allowance for loan losses, Ending Balance	103	120	93
Overdrafts
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for loan losses, Beginning Balance	194	188	161
Charge-offs	(319)	(252)	(240)
Recoveries	90	87	71
Provision for loan losses	272	171	196
Allowance for loan losses, Ending Balance	$ 237	$ 194	$ 188

Loans - Allowance for Loan Lo_2

Loans - Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Ending allowance balance attributable to loans:
Individually evaluated for impairment	$ 168	$ 47
Collectively evaluated for impairment	14,982	13,957
Modified in a troubled debt restructuring	4,554	5,689
Total ending allowance balance	19,704	19,693	$ 16,330	$ 16,737
Loans:
Individually evaluated for impairment	3,292	1,238
Collectively evaluated for impairment	2,460,863	2,130,228
Total	2,479,348	2,149,848
Modified in a troubled debt restructuring	14,626	17,303
Acquired with deteriorated credit quality
Ending allowance balance attributable to loans:
Total ending allowance balance	0	0
Loans:
Total	567	1,079
Commercial, industrial, and agricultural
Ending allowance balance attributable to loans:
Individually evaluated for impairment	54	47
Collectively evaluated for impairment	7,183	5,868
Modified in a troubled debt restructuring	104	245
Total ending allowance balance	7,341	6,160	5,428	6,035
Loans:
Individually evaluated for impairment	1,334	1,187
Collectively evaluated for impairment	910,386	698,206
Total	916,297	704,606
Modified in a troubled debt restructuring	4,577	5,213
Commercial, industrial, and agricultural | Acquired with deteriorated credit quality
Ending allowance balance attributable to loans:
Total ending allowance balance	0	0
Loans:
Total	0	0
Commercial mortgages
Ending allowance balance attributable to loans:
Individually evaluated for impairment	4	0
Collectively evaluated for impairment	3,036	3,563
Modified in a troubled debt restructuring	4,450	5,444
Total ending allowance balance	7,490	9,007	6,753	5,605
Loans:
Individually evaluated for impairment	1,446	51
Collectively evaluated for impairment	685,714	631,377
Total	697,776	644,597
Modified in a troubled debt restructuring	10,049	12,090
Commercial mortgages | Acquired with deteriorated credit quality
Ending allowance balance attributable to loans:
Total ending allowance balance	0	0
Loans:
Total	567	1,079
Residential real estate
Ending allowance balance attributable to loans:
Individually evaluated for impairment	100	0
Collectively evaluated for impairment	2,056	2,033
Modified in a troubled debt restructuring	0	0
Total ending allowance balance	2,156	2,033	1,653	2,475
Loans:
Individually evaluated for impairment	502	0
Collectively evaluated for impairment	770,807	713,347
Total	771,309	713,347
Modified in a troubled debt restructuring	0	0
Residential real estate | Acquired with deteriorated credit quality
Ending allowance balance attributable to loans:
Total ending allowance balance	0	0
Loans:
Total	0	0
Consumer
Ending allowance balance attributable to loans:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	2,377	2,179
Modified in a troubled debt restructuring	0	0
Total ending allowance balance	2,377	2,179	2,215	2,371
Loans:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	86,035	80,193
Total	86,035	80,193
Modified in a troubled debt restructuring	0	0
Consumer | Acquired with deteriorated credit quality
Ending allowance balance attributable to loans:
Total ending allowance balance	0	0
Loans:
Total	0	0
Credit cards
Ending allowance balance attributable to loans:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	103	120
Modified in a troubled debt restructuring	0	0
Total ending allowance balance	103	120	93	90
Loans:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	7,623	6,753
Total	7,623	6,753
Modified in a troubled debt restructuring	0	0
Credit cards | Acquired with deteriorated credit quality
Ending allowance balance attributable to loans:
Total ending allowance balance	0	0
Loans:
Total	0	0
Overdrafts
Ending allowance balance attributable to loans:
Individually evaluated for impairment	10	0
Collectively evaluated for impairment	227	194
Modified in a troubled debt restructuring	0	0
Total ending allowance balance	237	194	$ 188	$ 161
Loans:
Individually evaluated for impairment	10	0
Collectively evaluated for impairment	298	352
Total	308	352
Modified in a troubled debt restructuring	0	0
Overdrafts | Acquired with deteriorated credit quality
Ending allowance balance attributable to loans:
Total ending allowance balance	0	0
Loans:
Total	$ 0	$ 0

Loans - Loans Individually Eval

Loans - Loans Individually Evaluated for Impairment Including Loans Modified in Troubled Debt Restructurings by Portfolio Segment (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
With an allowance recorded:
Allowance for Loan Losses Allocated	$ 4,722	$ 5,736
With no related allowance recorded:
Unpaid Principal Balance, Total	23,707	20,330
Recorded Investment, Total	17,918	18,541
Commercial, industrial, and agricultural
With an allowance recorded:
Unpaid Principal Balance	3,053	1,915
Recorded Investment	3,037	1,915
Allowance for Loan Losses Allocated	158	292
With no related allowance recorded:
Unpaid Principal Balance	3,684	5,264
Recorded Investment	2,874	4,485
Commercial mortgages
With an allowance recorded:
Unpaid Principal Balance	10,799	9,940
Recorded Investment	6,709	9,731
Allowance for Loan Losses Allocated	4,454	5,444
With no related allowance recorded:
Unpaid Principal Balance	5,659	3,211
Recorded Investment	4,786	2,410
Residential real estate
With an allowance recorded:
Unpaid Principal Balance	502	0
Recorded Investment	502	0
Allowance for Loan Losses Allocated	100	0
With no related allowance recorded:
Unpaid Principal Balance	0	0
Recorded Investment	0	$ 0
Overdrafts
With an allowance recorded:
Unpaid Principal Balance	10
Recorded Investment	10
Allowance for Loan Losses Allocated	10
With no related allowance recorded:
Unpaid Principal Balance	0
Recorded Investment	$ 0

Loans - Impaired Financing Rece

Loans - Impaired Financing Receivables with Related and not Related Allowances (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
With no related allowance recorded:
Average Recorded Investment, Total	$ 20,715	$ 18,369	$ 15,867
Interest Income Recognized, Total	915	660	8
Cash Basis Interest Recognized, Total	886	660	8
Commercial, industrial, and agricultural
With an allowance recorded:
Average Recorded Investment	2,745	1,513	2,616
Interest Income Recognized	254	97	2
Cash Basis Interest Recognized	249	97	2
With no related allowance recorded:
Average Recorded Investment	4,642	2,438	2,290
Interest Income Recognized	157	114	0
Cash Basis Interest Recognized	148	114	0
Commercial mortgages
With an allowance recorded:
Average Recorded Investment	8,456	11,944	8,138
Interest Income Recognized	338	327	0
Cash Basis Interest Recognized	326	327	0
With no related allowance recorded:
Average Recorded Investment	4,566	2,474	2,773
Interest Income Recognized	146	122	0
Cash Basis Interest Recognized	144	122	0
Residential real estate
With an allowance recorded:
Average Recorded Investment	304	0	50
Interest Income Recognized	20	0	6
Cash Basis Interest Recognized	19	0	6
With no related allowance recorded:
Average Recorded Investment	0	0	0
Interest Income Recognized	0	0	0
Cash Basis Interest Recognized	0	$ 0	$ 0
Overdrafts
With an allowance recorded:
Average Recorded Investment	2
Interest Income Recognized	0
Cash Basis Interest Recognized	0
With no related allowance recorded:
Average Recorded Investment	0
Interest Income Recognized	0
Cash Basis Interest Recognized	$ 0

Loans - Nonaccrual Loans and Lo

Loans - Nonaccrual Loans and Loans Past Due over 90 Days Still Accruing Interest by Class of Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	$ 17,239	$ 19,232
Past Due Over 90 Days Still on Accrual	890	664
Commercial, industrial, and agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	2,839	1,869
Past Due Over 90 Days Still on Accrual	489	144
Commercial mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	7,694	11,065
Past Due Over 90 Days Still on Accrual	53	0
Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	6,023	5,470
Past Due Over 90 Days Still on Accrual	299	429
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	683	828
Past Due Over 90 Days Still on Accrual	44	37
Credit cards
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	0	0
Past Due Over 90 Days Still on Accrual	$ 5	$ 54

Loans - Aging of Recorded Inves

Loans - Aging of Recorded Investment in Past Due Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 20,029	$ 14,761
Loans Not Past Due	2,459,319	2,135,087
Total	2,479,348	2,149,848
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	7,834	5,751
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,691	2,449
Greater Than 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	7,504	6,561
Commercial, industrial, and agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,736	4,139
Loans Not Past Due	911,561	700,467
Total	916,297	704,606
Commercial, industrial, and agricultural | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,379	2,745
Commercial, industrial, and agricultural | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	16	646
Commercial, industrial, and agricultural | Greater Than 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,341	748
Commercial mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,213	525
Loans Not Past Due	693,563	644,072
Total	697,776	644,597
Commercial mortgages | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	858	233
Commercial mortgages | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,058	0
Commercial mortgages | Greater Than 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	297	292
Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	9,877	8,439
Loans Not Past Due	761,432	704,908
Total	771,309	713,347
Residential real estate | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,064	2,290
Residential real estate | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,319	1,494
Residential real estate | Greater Than 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,494	4,655
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,124	1,573
Loans Not Past Due	84,911	78,620
Total	86,035	80,193
Consumer | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	474	454
Consumer | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	283	307
Consumer | Greater Than 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	367	812
Credit cards
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	79	85
Loans Not Past Due	7,544	6,668
Total	7,623	6,753
Credit cards | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	59	29
Credit cards | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	15	2
Credit cards | Greater Than 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5	54
Overdrafts
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Loans Not Past Due	308	352
Total	308	352
Overdrafts | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Overdrafts | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Overdrafts | Greater Than 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 0	$ 0

Loans - Restructured in Trouble

Loans - Restructured in Troubled Debt (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)loan	Dec. 31, 2017USD ($)loan
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	25	20
Loan Balance	$ 14,626	$ 17,303
Specific Reserve	$ 4,554	$ 5,689
Commercial, industrial, and agricultural
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	10	11
Loan Balance	$ 4,577	$ 5,213
Specific Reserve	$ 104	$ 245
Commercial mortgages
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	15	9
Loan Balance	$ 10,049	$ 12,090
Specific Reserve	$ 4,450	$ 5,444
Residential real estate
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	0	0
Loan Balance	$ 0	$ 0
Specific Reserve	$ 0	$ 0
Consumer
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	0	0
Loan Balance	$ 0	$ 0
Specific Reserve	$ 0	$ 0
Credit cards
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	0	0
Loan Balance	$ 0	$ 0
Specific Reserve	$ 0	$ 0

Loans - Loans by Class Modified

Loans - Loans by Class Modified as Troubled Debt Restructurings (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)loan	Dec. 31, 2017USD ($)loan	Dec. 31, 2016USD ($)loan
Schedule Of Financial Receivables [Line Items]
Number of Loans | loan	25	20
Commercial, industrial, and agricultural
Schedule Of Financial Receivables [Line Items]
Number of Loans | loan	10	11
Commercial mortgages
Schedule Of Financial Receivables [Line Items]
Number of Loans | loan	15	9
Residential real estate
Schedule Of Financial Receivables [Line Items]
Number of Loans | loan	0	0
Consumer
Schedule Of Financial Receivables [Line Items]
Number of Loans | loan	0	0
Credit cards
Schedule Of Financial Receivables [Line Items]
Number of Loans | loan	0	0
Trouble Debt Restructuring
Schedule Of Financial Receivables [Line Items]
Number of Loans | loan	5	6	1
Pre-Modification Outstanding Recorded Investment | $	$ 1,570	$ 9,171	$ 109
Post-Modification Outstanding Recorded Investment | $	$ 1,570	$ 9,171	$ 109
Trouble Debt Restructuring | Commercial, industrial, and agricultural
Schedule Of Financial Receivables [Line Items]
Number of Loans | loan	0	4	1
Pre-Modification Outstanding Recorded Investment | $	$ 0	$ 2,750	$ 109
Post-Modification Outstanding Recorded Investment | $	$ 0	$ 2,750	$ 109
Trouble Debt Restructuring | Commercial mortgages
Schedule Of Financial Receivables [Line Items]
Number of Loans | loan	5	2	0
Pre-Modification Outstanding Recorded Investment | $	$ 1,570	$ 6,421	$ 0
Post-Modification Outstanding Recorded Investment | $	$ 1,570	$ 6,421	$ 0
Trouble Debt Restructuring | Residential real estate
Schedule Of Financial Receivables [Line Items]
Number of Loans | loan	0	0	0
Pre-Modification Outstanding Recorded Investment | $	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment | $	$ 0	$ 0	$ 0
Trouble Debt Restructuring | Consumer
Schedule Of Financial Receivables [Line Items]
Number of Loans | loan	0	0	0
Pre-Modification Outstanding Recorded Investment | $	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment | $	$ 0	$ 0	$ 0
Trouble Debt Restructuring | Credit cards
Schedule Of Financial Receivables [Line Items]
Number of Loans | loan	0	0	0
Pre-Modification Outstanding Recorded Investment | $	$ 0	$ 0	$ 0
Post-Modification Outstanding Recorded Investment | $	$ 0	$ 0	$ 0

Loans - Schedule of Loan Assign

Loans - Schedule of Loan Assigned Risk Rating within 12 Months of Balance Sheet Date (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	$ 2,454,853	$ 2,126,266
Commercial, industrial, and agricultural
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	916,297	704,606
Commercial mortgages
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	697,776	644,597
Pass
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	1,572,960	1,294,733
Pass | Commercial, industrial, and agricultural
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	889,547	668,570
Pass | Commercial mortgages
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	683,413	626,163
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	13,760	21,145
Special Mention | Commercial, industrial, and agricultural
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	10,519	16,726
Special Mention | Commercial mortgages
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	3,241	4,419
Substandard
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	27,353	33,325
Substandard | Commercial, industrial, and agricultural
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	16,231	19,310
Substandard | Commercial mortgages
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	11,122	14,015
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	0	0
Doubtful | Commercial, industrial, and agricultural
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	0	0
Doubtful | Commercial mortgages
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	0	0
Total
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	$ 1,614,073	$ 1,349,203

Loans - Recorded Investment in

Loans - Recorded Investment in Residential, Consumer and Credit Card Loans Based on Payment Activity (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Residential real estate
Financing Receivable, Recorded Investment [Line Items]
Amount of recorded investment	$ 771,309	$ 713,347
Consumer
Financing Receivable, Recorded Investment [Line Items]
Amount of recorded investment	86,035	80,193
Credit cards
Financing Receivable, Recorded Investment [Line Items]
Amount of recorded investment	7,623	6,753
Performing | Residential real estate
Financing Receivable, Recorded Investment [Line Items]
Amount of recorded investment	764,987	707,448
Performing | Consumer
Financing Receivable, Recorded Investment [Line Items]
Amount of recorded investment	85,308	79,328
Performing | Credit cards
Financing Receivable, Recorded Investment [Line Items]
Amount of recorded investment	7,618	6,699
Nonperforming | Residential real estate
Financing Receivable, Recorded Investment [Line Items]
Amount of recorded investment	6,322	5,899
Nonperforming | Consumer
Financing Receivable, Recorded Investment [Line Items]
Amount of recorded investment	727	865
Nonperforming | Credit cards
Financing Receivable, Recorded Investment [Line Items]
Amount of recorded investment	$ 5	$ 54

Loans - Summary of Holiday's Lo

Loans - Summary of Holiday's Loan Portfolio Included in Consumer and Residential Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loan portfolio	$ 2,479,348	$ 2,149,848
Less: unearned discount	3,175	3,157
Net loans	2,454,853	2,126,266
Holiday Financial Services Corporation | Residential Real Estate and Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loan portfolio	26,568	23,428
Less: unearned discount	(4,791)	(3,889)
Net loans	$ 21,777	$ 19,539

Secondary Market Mortgage Act_3

Secondary Market Mortgage Activities - Summary of Secondary Market Mortgage Activities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Mortgage Banking [Abstract]
Loans originated for resale	$ 22,990	$ 25,231	$ 31,255
Proceeds from sales of loans held for sale	23,311	24,285	33,045
Net gains on sales of loans held for sale	624	545	818
Loan servicing fees	$ 600	$ 563	$ 421

Secondary Market Mortgage Act_4

Secondary Market Mortgage Activities - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Mortgage Banking [Abstract]
Total loans serviced to others	$ 166,332,000	$ 159,208,000
Valuation allowance	$ 0	$ 0	$ 0

Secondary Market Mortgage Act_5

Secondary Market Mortgage Activities - Summary of Activity for Capital Mortgage Servicing Rights (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Summary Of Activity For Capitalized Mortgage Servicing Rights [Roll Forward]
Balance, beginning of year	$ 1,387	$ 1,391	$ 962
Additions	315	198	200
Servicing rights acquired	0	0	367
Amortization	(207)	(202)	(138)
Balance, end of year	$ 1,495	$ 1,387	$ 1,391

Premises and Equipment - Summar

Premises and Equipment - Summary of Premises and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 89,942	$ 93,359
Less: accumulated depreciation	40,022	42,644
Premises and equipment, net	49,920	50,715
Land
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	8,301	8,147
Premises and leasehold improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	52,810	53,903
Furniture and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	27,548	31,238
Construction in process
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 1,283	$ 71

Premises and Equipment - Additi

Premises and Equipment - Additional Information (Detail) $ in Thousands	1 Months Ended	12 Months Ended
	Dec. 31, 2009USD ($)renewal_term	Dec. 31, 2018USD ($)lease	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Property, Plant and Equipment [Line Items]
Depreciation on premises and equipment		$ 3,706	$ 3,811	$ 3,215
Rental expense, net of rental income		932	870	773
Sale leaseback transaction, lease term	17 years
Sale leaseback transaction, number of automatic renewals | renewal_term	2
Sale leaseback transaction, two automatic lease renewal, period	5 years
Sale leaseback transaction, sale of property, amount	$ 1,200
Sale leaseback transaction, deferred gain	$ 489
Sale leaseback transaction, gain recognized		$ 26	$ 25	$ 25
Facilities
Property, Plant and Equipment [Line Items]
Non-cancelable operating leases having remaining term less than one year | lease		28
Vehicles
Property, Plant and Equipment [Line Items]
Non-cancelable operating leases having remaining term less than one year | lease		6

Premises and Equipment - Summ_2

Premises and Equipment - Summary of Minimum Annual Rental Commitments Under Operating Lease (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Property, Plant and Equipment [Abstract]
2,019	$ 1,514
2,020	1,513
2,021	1,528
2,022	1,567
2,023	1,502
Thereafter	18,538
Total	$ 26,162

Premises and Equipment - Summ_3

Premises and Equipment - Summary of Minimum Annual Rental Commitments Under Sale Lease Back (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Property, Plant and Equipment [Abstract]
2,019	$ 105
2,020	105
2,021	105
2,022	105
2,023	105
Thereafter	315
Total	$ 840

Foreclosed Assets - Summary of

Foreclosed Assets - Summary of Foreclosed Assets Activity (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Real Estate Net Of Valuation Allowance [Roll Forward]
Balance, beginning of year	$ 710	$ 1,015	$ 654
Acquired from Lake National Bank	0	0	665
Additions	228	630	120
Sales (at carrying value)	(520)	(935)	(424)
Balance, end of year	$ 418	$ 710	$ 1,015

Foreclosed Assets - Summary o_2

Foreclosed Assets - Summary of Expenses Related to Foreclosed Real Estate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Real Estate [Abstract]
Net gain on sale	$ (310)	$ (208)	$ (134)
Operating expenses, net of rental income	283	366	223
Total	$ (27)	$ 158	$ 89

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Summary of Change in the Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Roll Forward]
Balance, beginning of year	$ 38,730	$ 38,730
Acquired during the year	0	0
Balance, end of year	$ 38,730	$ 38,730

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Additional Information (Detail) - Core Deposit - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2013
Goodwill [Line Items]
Intangible asset				$ 4,834
Amortization expense	$ 489	$ 662	$ 835
Net carrying value	410	899
Lake National Bank of Mentor, Ohio
Goodwill [Line Items]
Intangible asset			1,583
Amortization expense	409	567	$ 290
Net carrying value	$ 317	$ 726

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Estimated Amortization Expense of Core Deposit Intangible Assets (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2,019	$ 567
2,020	$ 160

Deposits - Summary of Deposit M

Deposits - Summary of Deposit Maturities (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Banking and Thrift [Abstract]
2,019	$ 155,670
2,020	100,360
2,021	62,480
2,022	62,204
2,023	6,814
Thereafter	7,909
Total	$ 395,437

Deposits - Additional Informati

Deposits - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Certificates of deposit of $250 thousand or more	$ 105,626	$ 108,992
Brokered deposits	$ 3,219	$ 3,535

Borrowings - Additional Informa

Borrowings - Additional Information (Detail)	1 Months Ended	12 Months Ended
	Sep. 30, 2016USD ($)	Dec. 31, 2018USD ($)line_of_credit	Dec. 31, 2017USD ($)line_of_credit	Dec. 31, 2007USD ($)security
Debt Instrument [Line Items]
Remaining borrowing capacity		$ 317,570,000
Federal home loan balance		$ 769,316,000
Number of unsecured lines of credit issued | line_of_credit		1	1
Pledge on certain loan amount		$ 10,000,000	$ 10,000,000
Line of credit, outstanding amount		$ 0	$ 0
Subordinated Debt
Debt Instrument [Line Items]
Number of preferred trust securities | security				2
Floating rate trust preferred securities				$ 10,000,000
Effective percentage		4.36%	3.24%
Trust preferred securities, interest payment deferment period		5 years
Subordinated Debt | LIBOR
Debt Instrument [Line Items]
Line of credit, basis spread on variable rate		1.55%
Notes Maturing In October 2026 | Subordinated Debt
Debt Instrument [Line Items]
Floating rate trust preferred securities	$ 50,000,000
Interest rate, percentage	5.75%
Notes Maturing In October 2026 | Subordinated Debt | LIBOR
Debt Instrument [Line Items]
Line of credit, basis spread on variable rate	4.55%
Line of Credit | Overnight Borrowing Agreements
Debt Instrument [Line Items]
Line of credit, outstanding amount		$ 0	$ 0

Borrowings - Schedule of Debt (

Borrowings - Schedule of Debt (Detail) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 769,316,000
Advances from federal home loan banks	$ 245,117	$ 257,359
Federal Home Loan Bank, Advances, Maturing Through 2033
Debt Instrument [Line Items]
Weighted average interest rate	2.06%	1.81%
Advances from federal home loan banks	$ 245,117	$ 222,943
Federal Home Loan Bank, Advances, Maturing Through 2033 | Minimum
Debt Instrument [Line Items]
Fixed interest rate	1.17%	1.05%
Federal Home Loan Bank, Advances, Maturing Through 2033 | Maximum
Debt Instrument [Line Items]
Fixed interest rate	5.24%	5.24%
Federal Home Loan Bank, Advances, Open Repo Borrowings
Debt Instrument [Line Items]
Fixed interest rate		1.54%
Maximum borrowing capacity		$ 150,000
Advances from federal home loan banks	$ 0	$ 34,416

Borrowings - Maturity Schedule

Borrowings - Maturity Schedule of Borrowed Funds (Detail) $ in Thousands	Dec. 31, 2018USD ($)
Debt Disclosure [Abstract]
2,019	$ 47,562
2,020	37,505
2,021	33,740
2,022	72,931
2,023	51,244
Thereafter	72,755
Total borrowed funds	$ 315,737

Interest Rate Swaps - Additiona

Interest Rate Swaps - Additional Information (Detail) - USD ($)	Sep. 07, 2018	May 03, 2011	Dec. 31, 2018	Dec. 31, 2017
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Derivatives designated as fair value hedges			$ 0	$ 0
Accumulated other comprehensive loss estimated			17,000
Interest Rate Swaps
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Cash collateral balance			$ 200,000	$ 1,400,000
Unsecured Debt
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Term of contract	5 years	5 years
Cash flow hedges	$ 10,000,000	$ 10,000,000
Unsecured Debt | LIBOR Plus 155 Basis Points
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Variable interest rate on subordinate debt			4.36%
Unsecured Debt | LIBOR Plus 155 basis points at 2.98%
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Variable interest rate on subordinate debt			4.53%
Derivative fixed interest rate rate basis			2.98%
LIBOR | Unsecured Debt | LIBOR Plus 155 Basis Points
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Derivative basis spread on variable rate			155.00%
LIBOR | Unsecured Debt | LIBOR Plus 155 basis points at 2.98%
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Derivative basis spread on variable rate			155.00%

Interest Rate Swaps - Amounts a

Interest Rate Swaps - Amounts and Locations of Activity Related to Interest Rate Swaps Designated as Cash Flow Hedges (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Amount of gain recognized in other comprehensive loss on derivative (effective portion)	$ (32)	$ 194	$ 180
Accrued interest payable and other liabilities
Derivative [Line Items]
Interest rate contract	(201)	(161)
Interest expense – subordinated debentures
Derivative [Line Items]
Amount of loss reclassified from accumulated other comprehensive loss into income (effective portion)	(164)	(288)	(340)
Other income
Derivative [Line Items]
Amount of gain or (loss) recognized in income on derivative (ineffective portion and amount excluded from effectiveness testing)	$ 0	$ 0	$ 0

Interest Rate Swaps - Amounts_2

Interest Rate Swaps - Amounts and Locations of Activity Related to Back-to-Back Interest Rate Swaps (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
3rd Party interest rate swaps
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Notional Amount, Asset	$ 23,152	$ 11,848
Average Maturity (in years)	7 years 2 months 12 days	8 years
Weighted Average Fixed Rate	3.85%	4.51%
Assets (Liabilities), at fair value	$ 485	$ 149
Customer interest rate swaps
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Notional Amount, Liability	$ (23,152)	$ (11,848)
Average Maturity (in years)	7 years 2 months 12 days	8 years
Weighted Average Fixed Rate	3.85%	4.51%
Assets (Liabilities), at fair value	$ (485)	$ (149)
LIBOR | 3rd Party interest rate swaps
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Derivative basis spread on variable rate	2.24%	2.37%
LIBOR | Customer interest rate swaps
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Derivative basis spread on variable rate	2.24%	2.37%

Income Taxes - Summary of Incom

Income Taxes - Summary of Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Current – federal	$ 7,520	$ 8,978	$ 6,181
Current – state	66	29	(33)
Deferred – federal	(1,076)	376	1,023
Deferred tax adjustment related to reduction in U.S. federal statutory income tax rate	0	3,009	0
Income tax expense	$ 6,510	$ 12,392	$ 7,171

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Income Tax Attributable to Pre-tax Income at Federal Statutory Tax Rates to Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Tax at statutory rate	$ 8,448	$ 12,688	$ 9,699
Tax exempt income, net	(1,403)	(1,899)	(2,054)
Deferred tax adjustment related to reduction in U.S. federal statutory income tax rate	0	3,009	0
Bank owned life insurance	(296)	(581)	(379)
Merger costs	0	0	170
Other	(239)	(825)	(265)
Income tax expense	$ 6,510	$ 12,392	$ 7,171
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Tax at statutory rate	21.00%	35.00%	35.00%
Tax exempt income, net	(3.50%)	(5.20%)	(7.40%)
Deferred tax adjustment related to reduction in U.S. federal statutory income tax rate	0.00%	8.30%	0.00%
Bank owned life insurance	(0.70%)	(1.60%)	(1.30%)
Merger costs	0.00%	0.00%	0.60%
Other	(0.60%)	(2.30%)	(1.00%)
Income tax expense	16.20%	34.20%	25.90%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Deferred tax adjustment related to reduction in U.S. federal statutory income tax rate	$ 0	$ 3,009,000	$ 0
Unrecognized tax benefit	0	0
Income tax matters accrued interest or penalties	0	0
Expense relate to interest and penalties	$ 0	$ 0	$ 0

Income Taxes - Components of Ne

Income Taxes - Components of Net Deferred Tax Asset (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Allowance for loan losses	$ 3,088	$ 2,840
Fair value adjustments – business combination	966	1,135
Deferred compensation	2,056	1,903
Net operating loss carryover	0	71
Post-retirement benefits	836	892
Unrealized loss on interest rate swap	42	34
Nonaccrual loan interest	589	390
Accrued expenses	1,254	699
Deferred fees and costs	588	598
Unrealized loss on securities available for sale	940	0
Other	366	344
Deferred tax assets	10,725	8,906
Deferred tax liabilities:
Unrealized gain on securities available for sale	0	126
Premises and equipment	1,459	1,413
Unrealized gain on trading securities	63	156
Intangibles – section 197	2,414	2,593
Mortgage servicing rights	314	291
Other	178	78
Deferred tax liabilities	4,428	4,657
Net deferred tax asset	$ 6,297	$ 4,249

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)serviceage	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee pretax contribution percentage	100.00%
Employee contribution	1.00%
Employee contribution percentage	3.00%
Employees compensation	50.00%
Total contributed by employee percentage	2.00%
Corporation's matching contribution and related expenses	$ 810	$ 802	$ 652
Profit sharing contributions	6.00%
Compensation percentage in excess of specified amount	5.70%
Excess of compensation	$ 128
Recognized profit sharing expense	1,530	1,755	1,276
Obligations of other liabilities	5,867	5,349
Expenses related employee benefit plans	776	648	550
Obligations under survivor benefit plan	1,330	1,264
Other liabilities related to survivor benefit plan	$ 66	89	$ 33
Employee retirement health care benefits plan | age	60
Minimum service period for participation in benefit plan | service	30
Accumulated benefit obligation	$ 2,427	$ 2,740
Amortized from accumulated other comprehensive income into net periodic benefit cost	$ 23
Weighted average discount rate net periodic benefit cost	3.13%	3.49%	3.67%
Accrued benefit obligations	3.78%	3.13%	3.49%
Expected costs of benefit	5.00%
Increase in health care trend rates	$ 182
Increase service and interest costs	14
Decrease in health care trend rates	165
Decrease service and interest costs	$ 13
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Qualifying dependents age group | age	60
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Qualifying dependents age group | age	65

Employee Benefit Plans - Unfund

Employee Benefit Plans - Unfunded Post Retirement Benefits Plan (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	$ 2,740	$ 3,409	$ 3,066
Interest cost	83	114	108
Service cost	87	103	103
Actual claims	(79)	(78)	(151)
Actuarial (gain) loss	(404)	(808)	283
Benefit obligation at end of year	$ 2,427	$ 2,740	$ 3,409

Employee Benefit Plans - Accumu

Employee Benefit Plans - Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Retirement Benefits [Abstract]
Net actuarial loss	$ (383)	$ (871)
Tax effect	79	183
Other comprehensive income (loss)	$ (304)	$ (688)

Employee Benefit Plans - Recogn

Employee Benefit Plans - Recognized Net Periodic Benefit Cost and Other Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Retirement Benefits [Abstract]
Service cost	$ 87	$ 103	$ 103
Interest cost	83	114	108
Net amortization of transition obligation and actuarial loss	84	192	184
Net periodic benefit cost	254	409	395
Net (gain) loss	(404)	(808)	282
Amortization of loss	(84)	(192)	(184)
Total recognized in other comprehensive income	(488)	(1,000)	98
Total recognized in net periodic benefit cost and other comprehensive income	$ (234)	$ (591)	$ 493

Deferred Compensation Plans - A

Deferred Compensation Plans - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018
Postemployment Benefits [Abstract]
Maximum period for deferred compensation plan payment after individual's termination of service	10 years

Deferred Compensation Plans - S

Deferred Compensation Plans - Summary of Changes in Deferred Compensation Plan Liability (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Postemployment Benefits [Roll Forward]
Balance, beginning of year	$ 2,503	$ 2,080	$ 1,226
Deferrals, dividends, and changes in fair value recorded as an expense	64	444	936
Deferred compensation payments	(159)	(21)	(82)
Balance, end of year	$ 2,408	$ 2,503	$ 2,080

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Changes in Nonvested Restricted Stock Awards (Detail)	12 Months Ended
	Dec. 31, 2018$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested at beginning of period (in shares) | shares	94,472
Granted (in shares) | shares	24,508
Forfeited (in shares) | shares	(361)
Vested (in shares) | shares	(42,730)
Nonvested at end of period (in shares) | shares	75,889
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Nonvested at beginning of period, Weighted-average Grant Date Fair Value (in dollars per share) | $ / shares	$ 20.79
Granted, Weighted-average Grant Date Fair Value (in dollars per share) | $ / shares	26.92
Forfeited, Weighted-average Grant Date Fair Value (in dollars per share) | $ / shares	26.19
Vested, Weighted-average Grant Date Fair Value (in dollars per share) | $ / shares	19.87
Nonvested at end of period, Weighted-average Grant Date Fair Value (in dollars per share) | $ / shares	$ 23.20

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	24,508
Weighted-average grant date fair value (in dollars per share)	$ 26.92
Number of authorized stock-based awards available for grant (in shares)	159,224
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	40,108	39,673	52,750
Unrecognized compensation cost related to nonvested restricted stock	$ 775	$ 1,243
Fair value of shares vesting during period	1,535	1,035	$ 624
Compensation expense	$ 1,545	$ 928	$ 820
Performance Based Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	10,468	5,306
Performance Based Restricted Stock Awards | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	10,468	5,306
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	15,600
Weighted-average grant date fair value (in dollars per share)	$ 27.16

Related Party Transactions (Det

Related Party Transactions (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Related Party Transactions [Abstract]
Aggregate of loans and credit cards total	$ 8,596	$ 5,331
Payments to fund long-term loans to related parties	18,020
Net change in outstanding credit card	26
Repayment total	14,781
Deposits	$ 9,619	$ 11,982

Capital Requirements and Rest_3

Capital Requirements and Restrictions on Retained Earnings - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2018categoryevent	Dec. 31, 2017	Dec. 31, 2015
Securities Financing Transaction [Line Items]
Capital conservation buffer phase ratio		1.875%	1.25%	0.00%
Number of capital categories provided by PCA regulation | category		5
Number of events resulting in change in Bank's capital category | event		0
Scenario, Forecast
Securities Financing Transaction [Line Items]
Capital conservation buffer phase ratio	2.50%
Accumulated net earnings | $	$ 41,463

Capital Requirements and Rest_4

Capital Requirements and Restrictions on Retained Earnings - Summary of Actual and Required Capital Amounts and Ratios (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Consolidated
Total Capital to Risk Weighted Assets
Total Capital to Risk Weighted Assets, Actual Amount	$ 319,340	$ 297,708
Total Capital to Risk Weighted Assets, Actual Ratio	13.21%	14.32%
Total Capital to Risk Weighted Assets, For Capital Adequacy Purposes Amount	$ 238,719	$ 192,341
Total Capital to Risk Weighted Assets, For Capital Adequacy Purposes Ratio	9.875%	9.25%
Tier 1 (Core) Capital to Risk Weighted Assets
Tier 1 (Core) Capital to Risk Weighted Assets, Actual Amount	$ 249,636	$ 228,015
Tier 1 (Core) Capital to Risk Weighted Assets, Actual Ratio	10.33%	10.97%
Tier 1 (Core) Capital to Risk Weighted Assets, For Capital Adequacy Purposes Amount	$ 190,371	$ 150,754
Tier 1 (Core) Capital to Risk Weighted Assets, For Capital Adequacy Purposes Ratio	7.875%	7.25%
Common equity Tier 1 to Risk Weighted Assets
Common equity Tier 1 to Risk Weighted Assets, Actual Amount	$ 229,636	$ 208,015
Common equity Tier 1 to Risk Weighted Assets, Actual Ratio	9.50%	10.00%
Common equity Tier 1 to Risk Weighted Assets, For Capital Adequacy Purposes Amount	$ 154,110	$ 119,563
Common equity Tier 1 to Risk Weighted Assets, For Capital Adequacy Purposes Ratio	6.375%	5.75%
Tier 1 (Core) Capital to Average Assets
Tier 1 (Core) Capital to Average Assets, Actual Amount	$ 249,636	$ 228,015
Tier 1 (Core) Capital to Average Assets, Actual Ratio	7.87%	8.45%
Tier 1 (Core) Capital to Average Assets, For Capital Adequacy Purposes, Amount	$ 126,882	$ 107,969
Tier 1 (Core) Capital to Average Assets, For Capital Adequacy Purposes, Ratio	4.00%	4.00%
Bank
Total Capital to Risk Weighted Assets
Total Capital to Risk Weighted Assets, Actual Amount	$ 302,627	$ 279,704
Total Capital to Risk Weighted Assets, Actual Ratio	12.59%	13.58%
Total Capital to Risk Weighted Assets, For Capital Adequacy Purposes Amount	$ 237,325	$ 190,513
Total Capital to Risk Weighted Assets, For Capital Adequacy Purposes Ratio	9.875%	9.25%
Total Capital to Risk Weighted Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 240,329	$ 205,960
Total Capital to Risk Weighted Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	10.00%	10.00%
Tier 1 (Core) Capital to Risk Weighted Assets
Tier 1 (Core) Capital to Risk Weighted Assets, Actual Amount	$ 284,722	$ 261,643
Tier 1 (Core) Capital to Risk Weighted Assets, Actual Ratio	11.85%	12.70%
Tier 1 (Core) Capital to Risk Weighted Assets, For Capital Adequacy Purposes Amount	$ 189,259	$ 149,321
Tier 1 (Core) Capital to Risk Weighted Assets, For Capital Adequacy Purposes Ratio	7.875%	7.25%
Tier 1 (Core) Capital to Risk Weighted Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 192,263	$ 164,768
Tier 1 (Core) Capital to Risk Weighted Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	8.00%	8.00%
Common equity Tier 1 to Risk Weighted Assets
Common equity Tier 1 to Risk Weighted Assets, Actual Amount	$ 277,343	$ 254,264
Common equity Tier 1 to Risk Weighted Assets, Actual Ratio	11.54%	12.35%
Common equity Tier 1 to Risk Weighted Assets, For Capital Adequacy Purposes Amount	$ 153,210	$ 118,427
Common equity Tier 1 to Risk Weighted Assets, For Capital Adequacy Purposes Ratio	6.375%	5.75%
Common equity Tier 1 to Risk Weighted Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 156,214	$ 133,874
Common equity Tier 1 to Risk Weighted Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.50%	6.50%
Tier 1 (Core) Capital to Average Assets
Tier 1 (Core) Capital to Average Assets, Actual Amount	$ 284,722	$ 261,643
Tier 1 (Core) Capital to Average Assets, Actual Ratio	9.12%	9.80%
Tier 1 (Core) Capital to Average Assets, For Capital Adequacy Purposes, Amount	$ 124,903	$ 106,798
Tier 1 (Core) Capital to Average Assets, For Capital Adequacy Purposes, Ratio	4.00%	4.00%
Tier 1 (Core) Capital to Average Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 156,128	$ 133,498
Tier 1 (Core) Capital to Average Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%	5.00%

Off-Balance Sheet Activities -

Off-Balance Sheet Activities - Schedule of Off-Balance Sheet Risks (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Commitments to make loans | Fixed Rate
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks, amount, liability	$ 46,265	$ 46,701
Commitments to make loans | Variable Rate
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks, amount, liability	191,803	196,449
Unused lines of credit | Fixed Rate
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks, amount, liability	14,390	14,565
Unused lines of credit | Variable Rate
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks, amount, liability	429,456	373,618
Standby letters of credit | Fixed Rate
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks, amount, liability	14,831	13,706
Standby letters of credit | Variable Rate
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet risks, amount, liability	$ 1,479	$ 1,524

Off-Balance Sheet Activities _2

Off-Balance Sheet Activities - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Small Business Investment Corporations
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Capital contributions	$ 3,905	$ 3,500
Low Income Housing Partnerships
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Capital contributions	1,434	2,468
Capital Contributions, Small Business Investment Corporation
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Capital contributions	6,595	4,500
Capital Contributions, Low Income Housing Partnerships
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Capital contributions	$ 4,566	$ 3,532
Minimum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed Interest rate loan	2.45%	1.00%
Fixed rate loan maturities range	1 year	8 months
Maximum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed Interest rate loan	18.00%	18.00%
Fixed rate loan maturities range	35 years	35 years

Fair Value - Assets and Liabili

Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Amortized Cost
Securities available for sale	$ 516,863	$ 409,709
U.S. Gov’t sponsored entities
Amortized Cost
Securities available for sale	132,694	108,148
State & political subdivisions
Amortized Cost
Securities available for sale	136,031	137,723
Residential & multi-family mortgage
Amortized Cost
Securities available for sale	206,053	109,636
Pooled SBA
Amortized Cost
Securities available for sale	29,374	36,040
Corporate notes & bonds
Amortized Cost
Securities available for sale	11,777	17,200
Fair Value, Measurements, Recurring
Amortized Cost
Securities available for sale	516,863	409,709
Interest rate swaps	485	149
Trading Securities:
Trading securities	7,786	7,150
Liabilities
Interest rate swaps	(686)	(310)
Fair Value, Measurements, Recurring | U.S. Gov’t sponsored entities
Amortized Cost
Securities available for sale	132,694	108,148
Trading Securities:
Trading securities	51	52
Fair Value, Measurements, Recurring | State & political subdivisions
Amortized Cost
Securities available for sale	136,031	137,723
Fair Value, Measurements, Recurring | Residential & multi-family mortgage
Amortized Cost
Securities available for sale	206,053	109,636
Fair Value, Measurements, Recurring | Corporate notes and bonds
Amortized Cost
Securities available for sale	11,777	17,200
Fair Value, Measurements, Recurring | Pooled SBA
Amortized Cost
Securities available for sale	29,374	36,040
Fair Value, Measurements, Recurring | Other
Amortized Cost
Securities available for sale	934	962
Fair Value, Measurements, Recurring | Corporate equity securities
Trading Securities:
Trading securities	5,828	5,125
Fair Value, Measurements, Recurring | Mutual funds
Trading Securities:
Trading securities	1,058	1,499
Fair Value, Measurements, Recurring | Certificates of deposit
Trading Securities:
Trading securities	268	220
Fair Value, Measurements, Recurring | Corporate notes & bonds
Trading Securities:
Trading securities	581	254
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Amortized Cost
Securities available for sale	934	962
Interest rate swaps	0	0
Trading Securities:
Trading securities	7,735	7,098
Liabilities
Interest rate swaps	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Gov’t sponsored entities
Amortized Cost
Securities available for sale	0	0
Trading Securities:
Trading securities	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | State & political subdivisions
Amortized Cost
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential & multi-family mortgage
Amortized Cost
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate notes and bonds
Amortized Cost
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pooled SBA
Amortized Cost
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other
Amortized Cost
Securities available for sale	934	962
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate equity securities
Trading Securities:
Trading securities	5,828	5,125
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mutual funds
Trading Securities:
Trading securities	1,058	1,499
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Certificates of deposit
Trading Securities:
Trading securities	268	220
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate notes & bonds
Trading Securities:
Trading securities	581	254
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Amortized Cost
Securities available for sale	515,929	408,747
Interest rate swaps	485	149
Trading Securities:
Trading securities	51	52
Liabilities
Interest rate swaps	(686)	(310)
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. Gov’t sponsored entities
Amortized Cost
Securities available for sale	132,694	108,148
Trading Securities:
Trading securities	51	52
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | State & political subdivisions
Amortized Cost
Securities available for sale	136,031	137,723
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Residential & multi-family mortgage
Amortized Cost
Securities available for sale	206,053	109,636
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate notes and bonds
Amortized Cost
Securities available for sale	11,777	17,200
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Pooled SBA
Amortized Cost
Securities available for sale	29,374	36,040
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other
Amortized Cost
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate equity securities
Trading Securities:
Trading securities	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Mutual funds
Trading Securities:
Trading securities	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Certificates of deposit
Trading Securities:
Trading securities	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate notes & bonds
Trading Securities:
Trading securities	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Amortized Cost
Securities available for sale	0	0
Interest rate swaps	0	0
Trading Securities:
Trading securities	0	0
Liabilities
Interest rate swaps	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | U.S. Gov’t sponsored entities
Amortized Cost
Securities available for sale	0	0
Trading Securities:
Trading securities	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | State & political subdivisions
Amortized Cost
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Residential & multi-family mortgage
Amortized Cost
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Corporate notes and bonds
Amortized Cost
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Pooled SBA
Amortized Cost
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Other
Amortized Cost
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Corporate equity securities
Trading Securities:
Trading securities	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Mutual funds
Trading Securities:
Trading securities	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Certificates of deposit
Trading Securities:
Trading securities	0	0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Corporate notes & bonds
Trading Securities:
Trading securities	$ 0	$ 0

Fair Value - Securities Availab

Fair Value - Securities Available for Sale Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3) (Detail) - Pooled trust preferred $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 2,049
Total gains or (losses):
Included in other comprehensive income (loss)	134
Sale of available-for-sale securities	(2,183)
Ending Balance	$ 0

Fair Value - Assets and Liabi_2

Fair Value - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Detail) - Fair Value, Measurements, Non Recurring - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Commercial, industrial, and agricultural
Impaired loans:
Commercial mortgages	$ 783
Commercial, industrial, and agricultural | Quoted Prices in Active Markets for Identical Assets (Level 1)
Impaired loans:
Commercial mortgages	0
Commercial, industrial, and agricultural | Significant Other Observable Inputs (Level 2)
Impaired loans:
Commercial mortgages	0
Commercial, industrial, and agricultural | Significant Unobservable Inputs (Level 3)
Impaired loans:
Commercial mortgages	783
Commercial mortgages
Impaired loans:
Commercial mortgages	224	$ 11
Commercial mortgages | Quoted Prices in Active Markets for Identical Assets (Level 1)
Impaired loans:
Commercial mortgages	0	0
Commercial mortgages | Significant Other Observable Inputs (Level 2)
Impaired loans:
Commercial mortgages	0	0
Commercial mortgages | Significant Unobservable Inputs (Level 3)
Impaired loans:
Commercial mortgages	$ 224	$ 11

Fair Value - Additional Informa

Fair Value - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired loans, recorded investment	$ 17,918	$ 18,541
Impaired loans allowance	4,722	5,736
Collateral Dependent Loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired loans, recorded investment	2,124	646
Impaired loans allowance	1,117	635
Impaired loans, additional negative provisions	$ 483	$ (418)

Fair Value - Quantitative Infor

Fair Value - Quantitative Information about Level 3 Fair Value Measurements for Financial Instruments Measured at Fair Value on Non Recurring Basis (Detail) - Fair Value, Measurements, Non Recurring - Significant Unobservable Inputs (Level 3) $ in Thousands	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value		$ 11
Commercial, industrial, and agricultural
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	$ 783
Commercial, industrial, and agricultural | Measurement Input, Loss Severity | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Valuation technique	0.55
Commercial, industrial, and agricultural | Measurement Input, Loss Severity | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Valuation technique	0.60
Commercial, industrial, and agricultural | Measurement Input, Loss Severity | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Valuation technique	0.57
Commercial mortgages
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	$ 224
Commercial mortgages | Measurement Input, Loss Severity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Valuation technique		0.10
Commercial mortgages | Measurement Input, Loss Severity | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Valuation technique	0.15
Commercial mortgages | Measurement Input, Loss Severity | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Valuation technique	0.39
Commercial mortgages | Measurement Input, Loss Severity | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Valuation technique	0.37	0.10

Fair Value - Carrying Amount an

Fair Value - Carrying Amount and Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Securities available for sale	$ 516,863	$ 409,709
Carrying Amount
ASSETS
Cash and cash equivalents	45,563	35,345
Securities available for sale	516,863	409,709
Trading securities	7,786	7,150
Loans held for sale	367	852
Net loans	2,454,853	2,126,266
FHLB and other equity interests	24,508	21,517
Interest rate swaps	485	149
Accrued interest receivable	10,843	9,254
Liabilities
Deposits	(2,610,786)	(2,167,815)
FHLB and other borrowings	(245,117)	(257,359)
Subordinated debentures	(70,620)	(70,620)
Interest rate swaps	(686)	(310)
Accrued interest payable	(863)	(554)
Fair Value
ASSETS
Cash and cash equivalents	45,563	35,345
Securities available for sale	516,863	409,709
Trading securities	7,786	7,150
Loans held for sale	368	853
Net loans	2,433,417	2,126,824
Interest rate swaps	485	149
Accrued interest receivable	10,843	9,254
Liabilities
Deposits	(2,612,719)	(2,165,600)
FHLB and other borrowings	(242,592)	(257,361)
Subordinated debentures	(65,794)	(63,575)
Interest rate swaps	(686)	(310)
Accrued interest payable	(863)	(554)
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value
ASSETS
Cash and cash equivalents	45,563	35,345
Securities available for sale	934	962
Trading securities	7,735	7,098
Loans held for sale	0	0
Net loans	0	0
Interest rate swaps	0	0
Accrued interest receivable	6	6
Liabilities
Deposits	(2,215,349)	(1,802,844)
FHLB and other borrowings	0	0
Subordinated debentures	0	0
Interest rate swaps	0	0
Accrued interest payable	0	0
Significant Other Observable Inputs (Level 2) | Fair Value
ASSETS
Cash and cash equivalents	0	0
Securities available for sale	515,929	408,747
Trading securities	51	52
Loans held for sale	368	853
Net loans	0	0
Interest rate swaps	485	149
Accrued interest receivable	3,368	2,651
Liabilities
Deposits	(397,370)	(362,756)
FHLB and other borrowings	(242,592)	(257,361)
Subordinated debentures	(65,794)	(63,575)
Interest rate swaps	(686)	(310)
Accrued interest payable	(863)	(554)
Significant Unobservable Inputs (Level 3) | Fair Value
ASSETS
Cash and cash equivalents	0	0
Securities available for sale	0	0
Trading securities	0	0
Loans held for sale	0	0
Net loans	2,433,417	2,126,824
Interest rate swaps	0	0
Accrued interest receivable	7,469	6,597
Liabilities
Deposits	0	0
FHLB and other borrowings	0	0
Subordinated debentures	0	0
Interest rate swaps	0	0
Accrued interest payable	$ 0	$ 0

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Non-interest Income
Service charges on deposit accounts									$ 5,759	$ 4,809	$ 4,297
Wealth and asset management fees									4,172	3,724	3,087
Mortgage banking									1,019	906	1,095
Card processing and interchange income									4,261	3,763	3,396
Net realized gains on available-for-sale securities									0	1,543	1,005
Other income									5,512	6,690
Total non-interest income	$ 4,433	$ 5,933	$ 5,606	$ 4,751	$ 5,541	$ 5,032	$ 5,089	$ 5,773	$ 20,723	$ 21,435	$ 17,691

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Percentage of primary source of revenue	90.70%

Contingency (Detail)

Contingency (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Mar. 28, 2018
Commitments and Contingencies Disclosure [Abstract]
Sales tax examination excluding penalties and interest accrued		$ 824
Sales tax examination penalties and interest accrued		339
Sales tax examination liability refund adjustment from settlement with tax authority		$ 1,163
Sales tax contingent liabilities	$ 96

Parent Company Only Financial_3

Parent Company Only Financial Information - Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Assets
Trading securities	$ 7,786	$ 7,150
Total Assets	3,221,521	2,768,773
Liabilities
Subordinated debentures	70,620	70,620
Total liabilities	2,958,691	2,524,863
Total shareholders’ equity	262,830	243,910	$ 211,784	$ 201,913
Total Liabilities and Shareholders’ Equity	3,221,521	2,768,773
Parent Company
Assets
Cash	355	1,556
Trading securities	623	580
Investment in bank subsidiary	310,574	290,156
Investment in non-bank subsidiaries	20,686	21,781
Deferreds and current receivable	1,459	2,055
Other assets	1,749	2,059
Total Assets	335,446	318,187
Liabilities
Borrowings from subsidiary	200	1,400
Subordinated debentures	70,620	70,620
Other liabilities	1,796	2,257
Total liabilities	72,616	74,277
Total shareholders’ equity	262,830	243,910
Total Liabilities and Shareholders’ Equity	$ 335,446	$ 318,187

Parent Company Only Financial_4

Parent Company Only Financial Information - Condensed Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Dividends from:
Income tax benefit									$ (6,510)	$ (12,392)	$ (7,171)
Net Income	$ 8,945	$ 9,236	$ 8,441	$ 7,097	$ 3,451	$ 7,246	$ 6,683	$ 6,480	33,719	23,860	20,540
Parent Company
Dividends from:
Bank subsidiary									12,029	8,840	8,700
Non-bank subsidiaries									3,000	2,250	1,200
Other									212	220	230
Total income									15,241	11,310	10,130
Expenses									(5,184)	(4,957)	(2,611)
Income before income taxes and equity in undistributed net income of subsidiaries									10,057	6,353	7,519
Income tax benefit									1,116	1,614	813
Equity in undistributed net income of bank subsidiary									24,031	17,430	13,184
Distributions in excess of net income of non-bank subsidiaries									(1,485)	(1,537)	(976)
Net Income									$ 33,719	$ 23,860	$ 20,540

Parent Company Only Financial_5

Parent Company Only Financial Information - Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Net income	$ 8,945	$ 9,236	$ 8,441	$ 7,097	$ 3,451	$ 7,246	$ 6,683	$ 6,480	$ 33,719	$ 23,860	$ 20,540
Adjustments to reconcile net income to net cash provided by operating activities:
Decrease (increase) in other assets									(3,079)	(1,175)	(3,906)
Increase in other liabilities									4,613	698	2,095
Net Cash Provided By Operating Activities									43,768	30,763	26,764
Cash flows from investing activities
Investment in non-bank subsidiaries									0	0	(2,866)
Net Cash Used In Investing Activities									(451,588)	(203,651)	(150,883)
Cash flows from financing activities:
Dividends paid									(10,237)	(10,094)	(9,546)
Proceeds from issuance of long term debt									50,000	160,000	80,000
Purchase of treasury stock									(2,454)	(1,877)	(44)
Net proceeds from issuance of common stock									0	19,294	0
Net Cash Provided By Financing Activities									418,038	179,050	126,041
Net Increase in Cash and Cash Equivalents									10,218	6,162	1,922
Cash and Cash Equivalents, Beginning				35,345				29,183	35,345	29,183	27,261
Cash and Cash Equivalents, Ending	45,563				35,345				45,563	35,345	29,183
Parent Company
Condensed Financial Statements, Captions [Line Items]
Net income									33,719	23,860	20,540
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed net income of bank subsidiary									(24,031)	(17,430)	(13,184)
Distributions in excess of net income of non–bank subsidiaries									1,485	1,537	976
Net unrealized gains on trading securities									0	(12)	(58)
Decrease (increase) in other assets									872	(549)	(1,277)
Increase in other liabilities									1,045	791	1,645
Net Cash Provided By Operating Activities									13,090	8,197	8,642
Cash flows from investing activities
Investment in non-bank subsidiaries									(400)	0	0
Investment in bank subsidiaries									0	(15,400)	(49,223)
Net Cash Used In Investing Activities									(400)	(15,400)	(49,223)
Cash flows from financing activities:
Dividends paid									(10,237)	(10,094)	(9,546)
Proceeds from issuance of long term debt									0	0	50,000
Purchase of treasury stock									(2,454)	(1,877)	(44)
Net proceeds from issuance of common stock									0	19,294	0
Net advance (to) from subsidiary									(1,200)	0	50
Net Cash Provided By Financing Activities									(13,891)	7,323	40,460
Net Increase in Cash and Cash Equivalents									(1,201)	120	(121)
Cash and Cash Equivalents, Beginning				$ 1,556				$ 1,436	1,556	1,436	1,557
Cash and Cash Equivalents, Ending	$ 355				$ 1,556				$ 355	$ 1,556	$ 1,436

Other Comprehensive Income - Co

Other Comprehensive Income - Components of Other Comprehensive Income and Related Tax Effects (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive (loss) income	$ (3,653)	$ 15	$ (2,020)
Available for sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before reclassifications	(5,073)	(136)	(1,838)
Reclassifications	0	(160)	(83)
Net unrealized gain (loss)	(5,073)	(296)	(1,921)
Tax effect	1,066	104	672
Total other comprehensive (loss) income	(4,007)	(192)	(1,249)
Available for sale securities, portion of OTTI recognized in earnings
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before reclassifications	0	134	(442)
Reclassifications	0	(1,383)	(922)
Net unrealized gain (loss)	0	(1,249)	(1,364)
Tax effect	0	437	477
Total other comprehensive (loss) income	0	(812)	(887)
Unrealized gain (loss) on postretirement benefits plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before reclassifications	404	808	(282)
Reclassifications	84	192	184
Net unrealized gain (loss)	488	1,000	(98)
Tax effect	(102)	(175)	34
Total other comprehensive (loss) income	386	825	(64)
Unrealized loss on interest rate swap
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before reclassifications	(204)	10	(63)
Reclassifications	164	288	340
Net unrealized gain (loss)	(40)	298	277
Tax effect	8	(104)	(97)
Total other comprehensive (loss) income	$ (32)	$ 194	$ 180

Other Comprehensive Income - Su

Other Comprehensive Income - Summary of Change in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 243,910	$ 211,784	$ 201,913
Comprehensive Income (Loss)	(3,653)	15	(2,020)
Reclassification of Disproportionate Tax Effect		0
Ending balance	262,830	243,910	211,784
AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(343)	(121)	1,899
Comprehensive Income (Loss)	(3,653)	15	(2,020)
Reclassification of Disproportionate Tax Effect	0	(237)	0
Ending balance	(3,996)	(343)	(121)
Unrealized gains (losses) on securities available for sale
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	473	1,393	3,529
Comprehensive Income (Loss)	(4,007)	(1,004)	(2,136)
Reclassification of Disproportionate Tax Effect	0	84	0
Ending balance	(3,534)	473	1,393
Unrealized gain (loss) on postretirement benefits plan
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(690)	(1,217)	(1,153)
Comprehensive Income (Loss)	386	825	(64)
Reclassification of Disproportionate Tax Effect	0	(298)	0
Ending balance	(304)	(690)	(1,217)
Unrealized loss on interest rate swap
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(126)	(297)	(477)
Comprehensive Income (Loss)	(32)	194	180
Reclassification of Disproportionate Tax Effect	0	(23)	0
Ending balance	$ (158)	$ (126)	$ (297)

Quarterly Financial Data (Una_3

Quarterly Financial Data (Unaudited) (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Total interest and dividend income	$ 36,344	$ 34,040	$ 32,099	$ 29,387	$ 28,698	$ 28,069	$ 27,003	$ 25,104	$ 131,870	$ 108,874	$ 94,315
Net interest income	28,116	26,878	25,826	24,100	23,801	23,517	22,989	21,202	104,920	91,509	81,287
Provision for loan losses	1,441	1,095	1,905	1,631	3,105	1,400	1,134	1,016	6,072	6,655	4,149
Non-interest income	4,433	5,933	5,606	4,751	5,541	5,032	5,089	5,773	20,723	21,435	17,691
Non-interest expense	20,006	20,794	19,543	18,999	17,588	17,618	17,797	17,034	79,342	70,037	67,118
Net income	$ 8,945	$ 9,236	$ 8,441	$ 7,097	$ 3,451	$ 7,246	$ 6,683	$ 6,480	$ 33,719	$ 23,860	$ 20,540
Basic earnings per common share (in dollars per share)	$ 0.59	$ 0.60	$ 0.55	$ 0.46	$ 0.23	$ 0.47	$ 0.44	$ 0.43	$ 2.21	$ 1.57	$ 1.42
Diluted earnings per common share (in dollars per share)	$ 0.59	$ 0.60	$ 0.55	$ 0.46	$ 0.23	$ 0.47	$ 0.44	$ 0.43	$ 2.21	$ 1.57	$ 1.42