CNB Financial (CCNE) 10-Q 3 May 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 01, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Trading Symbol	CCNE
Entity Registrant Name	CNB FINANCIAL CORP/PA
Entity Central Index Key	736,772
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		15,285,639

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 26,306	$ 33,146
Interest bearing deposits with other banks	2,298	2,199
Total cash and cash equivalents	28,604	35,345
Securities available for sale	418,299	409,709
Trading securities	7,256	7,150
Loans held for sale	1,460	852
Loans	2,279,753	2,149,848
Less: unearned discount	(3,629)	(3,889)
Less: allowance for loan losses	(20,756)	(19,693)
Net loans	2,255,368	2,126,266
FHLB, other equity, and restricted equity interests	26,564	21,517
Premises and equipment, net	50,174	50,715
Bank owned life insurance	55,435	55,035
Mortgage servicing rights	1,390	1,387
Goodwill	38,730	38,730
Core deposit intangible	1,377	1,625
Accrued interest receivable and other assets	24,226	20,442
Total Assets	2,908,883	2,768,773
LIABILITIES AND SHAREHOLDERS' EQUITY
Non-interest bearing deposits	311,052	321,858
Interest bearing deposits	1,899,003	1,845,957
Total deposits	2,210,055	2,167,815
Short-term borrowings	91,009	34,416
FHLB and other long term borrowings	265,389	222,943
Subordinated debentures	70,620	70,620
Accrued interest payable and other liabilities	26,999	29,069
Total liabilities	2,664,072	2,524,863
Common stock, $0 par value; authorized 50,000,000 shares; issued 15,308,378 shares at March 31, 2018 and December 31, 2017	0	0
Additional paid in capital	96,786	97,042
Retained earnings	152,872	148,298
Treasury stock, at cost (22,739 shares at March 31, 2018 and 43,638 shares at December 31, 2017)	(602)	(1,087)
Accumulated other comprehensive loss	(4,245)	(343)
Total shareholders' equity	244,811	243,910
Total Liabilities and Shareholders' Equity	$ 2,908,883	$ 2,768,773

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	15,308,378	15,308,378
Treasury stock, shares	22,739	43,638

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
INTEREST AND DIVIDEND INCOME:
Loans including fees	$ 26,457	$ 21,970
Securities:
Taxable	1,984	2,191
Tax-exempt	694	800
Dividends	252	143
Total interest and dividend income	29,387	25,104
INTEREST EXPENSE:
Deposits	2,924	2,121
Borrowed funds	1,488	809
Subordinated debentures (includes $58 and $76 accumulated other comprehensive income reclassification for change in fair value of interest rate swap agreements in 2018 and 2017, respectively)	875	972
Total interest expense	5,287	3,902
NET INTEREST INCOME	24,100	21,202
Provision (benefit) for loan losses	1,631	1,016
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	22,469	20,186
NON-INTEREST INCOME:
Service charges on deposit accounts	1,247	1,090
Other service charges and fees	618	529
Wealth and asset management fees	1,030	871
Net realized gains on available-for-sale securities (includes $0 and $1,383 accumulated other comprehensive income reclassifications for net realized gains on available-for-sale securities in 2018 and 2017, respectively)	0	1,383
Net realized and unrealized gains on trading securities	14	188
Mortgage banking	208	184
Bank owned life insurance	400	352
Card processing and interchange income	971	878
Other	263	298
Total non-interest income	4,751	5,773
NON-INTEREST EXPENSES:
Salaries and benefits	9,535	9,005
Net occupancy expense	2,496	2,540
Amortization of core deposit intangible	248	331
Data processing	1,074	961
State and local taxes	853	739
Legal, professional, and examination fees	508	549
Advertising	597	413
FDIC insurance premiums	298	204
Card processing and interchange expenses	734	422
Other	2,656	1,870
Total non-interest expenses	18,999	17,034
INCOME BEFORE INCOME TAXES	8,221	8,925
INCOME TAX EXPENSE (includes $12 and $457 income tax expense from reclassification items in 2018 and 2017, respectively)	1,124	2,445
NET INCOME	$ 7,097	$ 6,480
EARNINGS PER SHARE:
Basic	$ 0.46	$ 0.43
Diluted	0.46	0.43
DIVIDENDS PER SHARE:
Cash dividends per share	$ 0.165	$ 0.165

Consolidated Statements of Inc5

Consolidated Statements of Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Accumulated other comprehensive income reclassification for change in fair value of interest rate swap agreements	$ 58	$ 76
Accumulated other comprehensive income reclassifications for net realized gains on available-for-sale securities	0	1,383
Income tax expense from reclassification	$ 12	$ 457

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 7,097	$ 6,480
Net change in fair value of interest rate swap agreements designated as cash flow hedges:
Unrealized gain on interest rate swaps, net of tax of ($4) and ($3), respectively	16	6
Reclassification adjustment for losses recognized in earnings, net of tax of ($12) and ($27), respectively	46	49
Net change in fair value of interest rate swap agreements designated as cash flow hedges	62	55
Unrealized gains on other-than-temporarily impaired securities available for sale:
Unrealized gains arising during the period, net of tax of $0 and ($47), respectively	0	87
Reclassification adjustment for realized gains included in net income, net of tax of $0 and $484, respectively	0	(899)
Unrealized gains on other-than-temporarily impaired securities available for sale net of reclassification adjustment for realized gains (losses) included in net income	0	(812)
Unrealized gains on other securities available for sale:
Unrealized (losses) gains arising during the period, net of tax of $1,053 and ($456), respectively	(3,964)	850
Other comprehensive income (loss)	(3,902)	93
COMPREHENSIVE INCOME	$ 3,195	$ 6,573

Consolidated Statements of Com7

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Unrealized gain (loss) on interest rate swaps, tax	$ (4)	$ (3)
Reclassification adjustment for losses recognized in earnings, tax	(12)	(27)
Unrealized gains (losses) on other-than-temporarily impaired securities available for sale arising during the period, tax	0	(47)
Reclassification adjustment for realized gains included in net income, tax	0	484
Unrealized (losses) gains on other securities available for sale arising during the period, tax	$ 1,053	$ (456)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 7,097	$ 6,480
Adjustments to reconcile net income to net cash provided by operations:
Provision (benefit) for loan losses	1,631	1,016
Depreciation and amortization of premises and equipment, core deposit intangible, and mortgage servicing rights	1,236	1,333
Amortization and accretion of securities premiums and discounts, deferred loan fees and costs, net yield and credit mark on acquired loans, and unearned income	(427)	53
Net realized gains on sales of available-for-sale securities	0	(1,383)
Net realized and unrealized gains on trading securities	(14)	(188)
Proceeds from sale of trading securities	0	402
Purchase of trading securities	(92)	(904)
Gain on sale of loans	(105)	(81)
Net gains on dispositions of premises and equipment and foreclosed assets	(4)	(81)
Proceeds from sale of loans	4,270	3,197
Origination of loans held for sale	(4,824)	(4,376)
Income on bank owned life insurance	(400)	(352)
Stock-based compensation expense	674	189
Changes in:
Accrued interest receivable and other assets	(4,134)	(1,108)
Accrued interest payable and other liabilities	(766)	(3,971)
NET CASH PROVIDED BY OPERATING ACTIVITIES	4,142	226
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from maturities, prepayments and calls of available-for-sale securities	7,780	21,546
Proceeds from sales of available-for-sale securities	0	2,183
Purchase of available-for-sale securities	(21,634)	(2,268)
Loan origination and payments, net	(130,059)	(35,616)
Purchase of FHLB, other equity, and restricted equity interests	(5,047)	(999)
Purchase of premises and equipment	(397)	(1,877)
Proceeds from the sale of premises and equipment and foreclosed assets	166	236
NET CASH USED IN BY INVESTING ACTIVITIES	(149,191)	(16,795)
Net change in:
Checking, money market and savings accounts	30,391	24,999
Certificates of deposit	11,849	(17,042)
Deposits held for sale	0	57
Purchase of treasury stock	(448)	(1,103)
Cash dividends paid	(2,523)	(2,525)
Proceeds from stock offering, net of issuance costs	0	19,294
Repayment of long-term borrowings	(7,554)	(17,461)
Proceeds from long-term borrowings	50,000	0
Net change in short-term borrowings	56,593	9,536
NET CASH PROVIDED BY FINANCING ACTIVITIES	138,308	15,755
NET DECREASE IN CASH AND CASH EQUIVALENTS	(6,741)	(814)
CASH AND CASH EQUIVALENTS, Beginning	35,345	29,183
CASH AND CASH EQUIVALENTS, Ending	28,604	28,369
Cash paid during the period for:
Interest	5,203	3,890
Income taxes	0	0
SUPPLEMENTAL NONCASH DISCLOSURES:
Transfers to other real estate owned	0	51
Grant of restricted stock awards from treasury stock	$ 933	$ 943

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	1. BASIS OF PRESENTATION The accompanying consolidated financial statements have been prepared pursuant to rules and regulations of the SEC and in compliance with accounting principles generally accepted in the United States of America (“GAAP”). Because this report is based on an interim period, certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted. In the opinion of management of the registrant, the accompanying consolidated financial statements as of March 31, 2018 and for the three month periods ended March 31, 2018 and 2017 include all adjustments, consisting of only normal recurring adjustments, necessary for a fair presentation of the financial condition and the results of operations for the periods presented. The financial performance reported for CNB Financial Corporation (the “Corporation”) for the three month period ended March 31, 2018 is not necessarily indicative of the results to be expected for the full year. This information should be read in conjunction with the Corporation’s Annual Report on Form 10-K 10-K”).

Stock Compensation

Stock Compensation	3 Months Ended
	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Compensation	2. STOCK 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 aggregate grants of up to 500,000 shares of common stock 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 is one-third 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 15,702 shares in aggregate were granted to key employees. In 2017, an award with a maximum of 10,000 shares was granted to a key employee. Compensation expense for the restricted stock awards is recognized over the requisite service period noted above based on the fair value of the shares at the date of grant. Nonvested restricted stock awards are recorded as a reduction of additional paid-in-capital A summary of changes in time-based nonvested restricted stock awards for the three months ended March 31, 2018 follows: Per Share Weighted Average Shares Grant Date Fair Value Nonvested at beginning of period 94,472 $ 20.79 Granted 22,108 26.92 Vested (40,105 ) 19.69 Nonvested at end of period 76,475 $ 23.07 The above table excludes 15,600 shares that were granted and immediately vested. Compensation expense resulting from the immediately vested shares was $385 for the three months ended March 31, 2018, and is included in the previously disclosed $674 above. The fair value of shares vested was $1,462 and $917 during the three months ended March 31, 2018 and 2017, respectively.

Fair Value

Fair Value	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value	3. 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 March 31, 2018 and December 31, 2017: Fair Value Measurements at March 31, 2018 Using Quoted Prices in Significant Active Markets for Significant Other Unobservable Identical Assets Observable Inputs Inputs Description Total (Level 1) (Level 2) (Level 3) Assets: Securities Available For Sale: U.S. Government sponsored entities $ 111,921 $ 0 $ 111,921 $ 0 States and political subdivisions 133,466 0 133,466 0 Residential and multi-family mortgage 120,630 0 120,630 0 Corporate notes and bonds 17,194 0 17,194 0 Pooled SBA 34,145 0 34,145 0 Other 943 943 0 0 Total Securities Available For Sale $ 418,299 $ 943 $ 417,356 $ 0 Interest Rate swaps $ 146 $ 0 $ 146 $ 0 Trading Securities: Corporate equity securities $ 5,172 $ 5,172 $ 0 $ 0 Mutual funds 1,612 1,612 0 0 Certificates of deposit 170 170 0 0 Corporate notes and bonds 250 250 0 0 U.S. Government sponsored entities 52 0 52 0 Total Trading Securities $ 7,256 $ 7,204 $ 52 $ 0 Liabilities, Interest rate swaps $ (229 ) $ 0 $ (229 ) $ 0 Fair Value Measurements at December 31, 2017 Using Quoted Prices in Significant Active Markets for Significant Other Unobservable Identical Assets Observable Inputs Inputs Description Total (Level 1) (Level 2) (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 three months ended March 31, 2018 and 2017: 2018 2017 Balance, January 1 $ 0 $ 2,049 Total gains: Included in other comprehensive income (unrealized) 0 134 Sale of available-for-sale 0 (2,183 ) Balance, March 31 $ 0 $ 0 Assets and liabilities measured at fair value on a non-recurring Fair Value Measurements at March 31, 2018 Using Quoted Prices in Significant Active Markets for Significant Other Unobservable Identical Assets Observable Inputs Inputs Description Total (Level 1) (Level 2) (Level 3) Assets: Impaired loans: Commercial mortgages $ 60 0 0 $ 60 Fair Value Measurements at December 31, 2017 Using Quoted Prices in Significant Active Markets for Significant Other Unobservable Identical Assets Observable Inputs Inputs Description Total (Level 1) (Level 2) (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 $959 with a valuation allowance of $899 as of March 31, 2018, resulting in a provision for loan losses of $264 for the corresponding three month period. Impaired loans had a recorded investment of $646 with a valuation allowance of $635 as of December 31, 2017. Impaired loans carried at fair value resulted in a negative provision for loan losses of $(103) for the three months ended March 31, 2017. 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 The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring Fair Valuation Technique Unobservable Inputs Range Impaired loans – commercial mortgages $ 60 Discounted cash flow method Discount used in discounted cash flow method 10% (10%) The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring Fair Valuation Technique Unobservable Inputs Range Impaired loans – commercial mortgages $ 11 Discounted cash flow method Discount used in discounted cash flow method 10% (10%) Fair Value of Financial Instruments The following table presents the carrying amount and fair value of financial instruments at March 31, 2018: Carrying Fair Value Measurement Using: Total Amount Level 1 Level 2 Level 3 Fair Value ASSETS Cash and cash equivalents $ 28,604 $ 28,604 $ 0 $ 0 $ 28,604 Securities available for sale 418,299 943 417,356 0 418,299 Trading securities 7,256 7,204 52 0 7,256 Loans held for sale 1,460 0 1,460 0 1,460 Net loans 2,255,368 0 0 2,226,877 2,226,877 FHLB and other restricted interests 21,377 n/a n/a n/a n/a Other equity interests 5,187 5,187 Interest rate swaps 146 0 146 0 146 Accrued interest receivable 9,853 7 3,117 6,729 9,853 LIABILITIES Deposits $ (2,210,055 ) $ (1,833,235 ) $ (378,985 ) $ 0 $ (2,212,220 ) FHLB and other borrowings (356,398 ) 0 (351,547 ) 0 (351,547 ) Subordinated debentures (70,620 ) 0 (69,767 ) 0 (69,767 ) Interest rate swaps (229 ) 0 (229 ) 0 (229 ) Accrued interest payable (638 ) 0 (638 ) 0 (638 ) The following table presents the carrying amount and fair value of financial instruments at December 31, 2017: Carrying Fair Value Measurement Using: Total Amount Level 1 Level 2 Level 3 Fair Value 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 restricted interests 17,035 n/a n/a n/a n/a Other equity interests 4,482 4,482 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 and assumptions, not otherwise presented, used to estimate fair values are described as follows: Cash and cash equivalents: Interest bearing time deposits with other banks: Loans held for sale: Loans: FHLB and other restricted equity interests: Other equity interests: Accrued interest receivable: Deposits: FHLB and other borrowings: Subordinated debentures: Accrued interest payable: 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. 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

Securities

Securities	3 Months Ended
	Mar. 31, 2018
Cash and Cash Equivalents [Abstract]
Securities	4. SECURITIES Securities available for sale at March 31, 2018 and December 31, 2017 are as follows: March 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 $ 113,341 $ 334 $ (1,754 ) $ 111,921 $ 108,578 $ 478 $ (908 ) $ 108,148 State & political subdivisions 131,608 2,616 (758 ) 133,466 134,428 3,609 (314 ) 137,723 Residential & multi-family mortgage 123,995 104 (3,469 ) 120,630 111,214 304 (1,882 ) 109,636 Corporate notes & bonds 17,608 45 (459 ) 17,194 17,610 52 (462 ) 17,200 Pooled SBA 35,145 113 (1,113 ) 34,145 36,260 355 (575 ) 36,040 Other 1,020 0 (77 ) 943 1,020 0 (58 ) 962 Total $ 422,717 $ 3,212 $ (7,630 ) $ 418,299 $ 409,110 $ 4,798 $ (4,199 ) $ 409,709 At March 31, 2018 and December 31, 2017, there were no holdings of securities of any one issuer, other than the 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. Trading securities at March 31, 2018 and December 31, 2017 are as follows: March 31, December 31, Corporate equity securities $ 5,172 $ 5,125 Mutual funds 1,612 1,499 Certificates of deposit 170 220 Corporate notes and bonds 250 254 U.S. Government sponsored entities 52 52 Total $ 7,256 $ 7,150 Securities with unrealized losses at March 31, 2018 and December 31, 2017, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, are as follows: March 31, 2018 Less than 12 Months 12 Months or More Total Description of Securities Fair Unrealized Fair Unrealized Fair Unrealized U.S. Gov’t sponsored entities $ 63,833 $ (1,262 ) $ 34,590 $ (492 ) $ 98,423 $ (1,754 ) State & political subdivisions 61,022 (456 ) 4,045 (302 ) 65,067 (758 ) Residential & multi-family mortgage 50,017 (913 ) 59,984 (2,556 ) 110,001 (3,469 ) Corporate notes & bonds 5,225 (38 ) 9,077 (421 ) 14,302 (459 ) Pooled SBA 7,513 (67 ) 21,272 (1,046 ) 28,785 (1,113 ) Other 0 (0 ) 943 (77 ) 943 (77 ) $ 187,610 $ (2,736 ) $ 129,911 $ (4,894 ) $ 317,521 $ (7,630 ) December 31, 2017 Less than 12 Months 12 Months or More Total Fair Unrealized Fair Unrealized Fair Unrealized 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. A roll-forward of the other-than-temporary impairment amount related to credit losses for the three months ended March 31, 2018 and 2017 is as follows: 2018 2017 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 Credit losses previously recognized on securities sold during the period 0 (2,071 ) Additional credit loss for which other-than-temporary impairment was not previously recognized 0 0 Additional credit loss for which other-than-temporary impairment was previously recognized 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 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 March 31, 2018 and December 31, 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 March 31, 2018 and December 31, 2017, securities carried at $274,883 and $319,575, respectively, were pledged to secure public deposits and for other purposes as provided by law. Information pertaining to security sales on available for sale securities is as follows: Proceeds Gross Gross Three months ended March 31, 2018 $ 0 $ 0 $ 0 Three months ended March 31, 2017 $ 2,183 $ 1,383 $ 0 The tax provision related to these net realized gains was $0 and $484, respectively. The following is a schedule of the contractual maturity of securities available for sale, excluding equity securities, at March 31, 2018: Amortized Fair Cost Value 1 year or less $ 58,820 $ 58,626 1 year – 5 years 154,027 154,001 5 years – 10 years 43,991 44,236 After 10 years 5,719 5,718 262,557 262,581 Residential and multi-family mortgage 123,995 120,630 Pooled SBA 35,145 34,145 Total debt securities $ 421,697 $ 417,356 Mortgage and asset backed 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.

Loans

Loans	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Loans	5. LOANS Total net loans at March 31, 2018 and December 31, 2017 are summarized as follows: March 31, December 31, Commercial, industrial, and agricultural $ 773,473 $ 749,138 Commercial mortgages 694,517 600,065 Residential real estate 725,683 713,347 Consumer 77,981 80,193 Credit cards 6,965 6,753 Overdrafts 1,134 352 Less: unearned discount (3,629 ) (3,889 ) allowance for loan losses (20,756 ) (19,693 ) Loans, net $ 2,255,368 $ 2,126,266 At March 31, 2018 and December 31, 2017, net unamortized loan fees of $3,211 and $2,574, 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 Western Pennsylvania, Central and Northeastern 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 Commercial, industrial, and agricultural loans comprised 34% and 35% of the Corporation’s total loan portfolio at March 31, 2018 and December 31, 2017, respectively. Commercial mortgage loans comprised 31% and 28% of the Corporation’s total loan portfolio at March 31, 2018 and December 31, 2017, respectively. Management assigns a risk rating to all commercial loans at loan origination. The loan-to-value loan-to-value Residential real estate loans comprised 32% and 33% of the Corporation’s total loan portfolio at March 31, 2018 and December 31, 2017, respectively. The loan-to-value loan-to-value Transactions in the allowance for loan losses for the three months ended March 31, 2018 were as follows: Commercial, Residential Industrial, and Commercial Real Credit Agricultural Mortgages Estate Consumer Cards Overdrafts Total Allowance for loan losses, January 1, 2018 $ 6,160 $ 9,007 $ 2,033 $ 2,179 $ 120 $ 194 $ 19,693 Charge-offs (31 ) 0 0 (590 ) (19 ) (86 ) (726 ) Recoveries 68 0 3 49 7 31 158 Provision for loan losses 85 1,013 16 427 15 75 1,631 Allowance for loan losses, March 31, 2018 $ 6,282 $ 10,020 $ 2,052 $ 2,065 $ 123 $ 214 $ 20,756 Transactions in the allowance for loan losses for the three months ended March 31, 2017 were as follows: Commercial, Residential Industrial, and Commercial Real Credit Agricultural Mortgages Estate Consumer Cards Overdrafts Total Allowance for loan losses, January 1, 2017 $ 5,428 $ 6,753 $ 1,653 $ 2,215 $ 93 $ 188 $ 16,330 Charge-offs (1 ) 0 (68 ) (735 ) (58 ) (69 ) (931 ) Recoveries 12 2 71 2 11 33 131 Provision (benefit) for loan losses (654 ) 602 366 607 59 36 1,016 Allowance for loan losses, March 31, 2017 $ 4,785 $ 7,357 $ 2,022 $ 2,089 $ 105 $ 188 $ 16,546 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 March 31, 2018 and December 31, 2017. The recorded investment in loans excludes accrued interest and unearned discounts due to their insignificance. March 31, 2018 Commercial, Commercial Residential Consumer Credit Overdrafts Total Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ 20 $ 2 $ 0 $ 0 $ 0 $ 0 $ 22 Collectively evaluated for impairment 5,984 3,850 2,052 2,065 123 214 14,288 Acquired with deteriorated credit quality 0 0 0 0 0 0 0 Modified in a troubled debt restructuring 278 6,168 0 0 0 0 6,446 Total ending allowance balance $ 6,282 $ 10,020 $ 2,052 $ 2,065 $ 123 $ 214 $ 20,756 Loans: Individually evaluated for impairment $ 1,418 $ 1,892 $ 0 $ 0 $ 0 $ 0 $ 3,310 Collectively evaluated for impairment 766,905 679,271 725,683 77,981 6,965 1,134 2,257,939 Acquired with deteriorated credit quality 0 1,144 0 0 0 0 1,144 Modified in a troubled debt restructuring 5,150 12,210 0 0 0 0 17,360 Total ending loans balance $ 773,473 $ 694,517 $ 725,683 $ 77,981 $ 6,965 $ 1,134 $ 2,279,753 December 31, 2017 Commercial, Commercial Residential Consumer Credit 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 742,738 586,845 713,347 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 $ 749,138 $ 600,065 $ 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 March 31, 2018 and December 31, 2017 and for the three months ended March 31, 2018 and 2017: March 31, 2018 Unpaid Principal Recorded Allowance for Loan With an allowance recorded: Commercial, industrial, and agricultural $ 1,861 $ 1,852 $ 298 Commercial mortgage 9,290 9,007 6,170 Residential real estate 0 0 0 With no related allowance recorded: Commercial, industrial, and agricultural 5,478 4,716 0 Commercial mortgage 6,054 5,095 0 Residential real estate 0 0 0 Total $ 22,683 $ 20,670 $ 6,468 December 31, 2017 Unpaid Principal Recorded Allowance for Loan 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. Three Months Ended March 31, 2018 Average Interest Cash Basis Recorded Income Interest Investment Recognized Recognized With an allowance recorded: Commercial, industrial, and agricultural $ 1,884 $ 22 $ 22 Commercial mortgage 9,234 18 18 Residential real estate 0 0 0 With no related allowance recorded: Commercial, industrial, and agricultural 4,600 46 46 Commercial mortgage 3,753 13 13 Residential real estate 0 0 0 Total $ 19,491 $ 99 $ 99 Three Months Ended March 31, 2017 Average Interest Cash Basis Recorded Income Interest Investment Recognized Recognized With an allowance recorded: Commercial, industrial, and agricultural $ 1,636 $ 18 $ 18 Commercial mortgage 15,270 145 145 Residential real estate 0 0 0 With no related allowance recorded: Commercial, industrial, and agricultural 1,712 16 16 Commercial mortgage 0 0 0 Residential real estate 0 0 0 Total $ 18,618 $ 179 $ 179 The following table presents the recorded investment in nonaccrual loans and loans past due over 90 days still accruing interest by class of loans as of March 31, 2018 and December 31, 2017: March 31, 2018 December 31, 2017 Nonaccrual Past Due Nonaccrual Past Due Commercial, industrial, and agricultural $ 2,737 $ 0 $ 1,869 $ 78 Commercial mortgages 11,361 0 11,065 0 Residential real estate 5,038 425 5,470 338 Consumer 614 13 828 17 Credit cards 0 37 0 44 Total $ 19,750 $ 475 $ 19,232 $ 477 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 March 31, 2018 and December 31, 2017 by class of loans. March 31, 2018 30-59 Days 60-89 Days Greater Than Total Loans Not Total Commercial, industrial, and agricultural $ 2,371 $ 173 $ 935 $ 3,479 $ 769,994 $ 773,473 Commercial mortgages 3 314 1,714 2,031 692,486 694,517 Residential real estate 1,565 1,596 4,471 7,632 718,051 725,683 Consumer 376 447 580 1,403 76,578 77,981 Credit cards 30 5 37 72 6,893 6,965 Overdrafts 0 0 0 0 1,134 1,134 Total $ 4,345 $ 2,535 $ 7,737 $ 14,617 $ 2,265,136 $ 2,279,753 December 31, 2017 30-59 Days 60-89 Days Greater Than Total Loans Not Total Commercial, industrial, and agricultural $ 2,745 $ 646 $ 748 $ 4,139 $ 744,999 $ 749,138 Commercial mortgages 233 0 292 525 599,540 600,065 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 31 10 44 85 6,668 6,753 Overdrafts 0 0 0 0 352 352 Total $ 5,753 $ 2,457 $ 6,551 $ 14,761 $ 2,135,087 $ 2,149,848 Troubled Debt Restructurings The terms of certain loans have been 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 March 31, 2018 and December 31, 2017. March 31, 2018 December 31, 2017 Number of Loan Specific Number of Loan Specific Commercial, industrial, and agricultural 10 $ 5,150 $ 278 10 $ 5,213 $ 245 Commercial mortgages 9 12,210 6,168 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 19 $ 17,360 $ 6,446 19 $ 17,303 $ 5,689 There were no loans modified as troubled debt restructurings during the three months ended March 31, 2018 or March 31, 2017. A loan is considered to be in payment default once it is 90 days contractually past due under the modified terms. All loans modified in troubled debt restructurings are performing in accordance with their modified terms as of March 31, 2018 and December 31, 2017 and no principal balances were forgiven in connection with the loan restructurings. In order to determine whether a borrower is experiencing financial difficulty, the Corporation performs an evaluation using its internal underwriting policies of the probability that the borrower will be in payment default on any of its debt in the foreseeable future without a loan modification. The Corporation has no further loan commitments to customers whose loans are classified as a troubled debt restructuring. Generally, non-performing 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. Loans with outstanding balances greater than $1 million are analyzed at least semiannually and loans with outstanding balances of less than $1 million are analyzed at least annually. 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. March 31, 2018 Pass Special Substandard Doubtful Total Commercial, industrial, and agricultural $ 740,558 $ 9,513 $ 23,402 $ 0 $ 773,473 Commercial mortgages 676,688 2,771 15,058 0 694,517 Total $ 1,417,246 $ 12,284 $ 38,460 $ 0 $ 1,467,990 December 31, 2017 Pass Special Substandard Doubtful Total Commercial, industrial, and agricultural $ 713,102 $ 16,726 $ 19,310 $ 0 $ 749,138 Commercial mortgages 581,631 4,419 14,015 0 600,065 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 aging status of the loan, which was previously presented, and by payment activity. The following table presents the recorded investment in residential, consumer, and credit card loans based on payment activity as of March 31, 2018 and December 31, 2017: March 31, 2018 December 31, 2017 Residential Credit Residential Credit Real Estate Consumer Cards Real Estate Consumer Cards Performing $ 720,220 $ 77,354 $ 6,928 $ 707,539 $ 79,348 $ 6,709 Nonperforming 5,463 627 37 5,808 845 44 Total $ 725,683 $ 77,981 $ 6,965 $ 713,347 $ 80,193 $ 6,753 The Corporation’s portfolio of residential real estate and consumer loans maintained within Holiday Financial Services Corporation (“Holiday”) are considered to be subprime loans. Holiday is 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. Holiday’s loan portfolio is summarized as follows at March 31, 2018 and December 31, 2017: March 31, December 31, 2018 2017 Consumer $ 21,892 $ 23,428 Less: unearned discount (3,629 ) (3,889 ) Total $ 18,263 $ 19,539

Deposits

Deposits	3 Months Ended
	Mar. 31, 2018
Banking and Thrift [Abstract]
Deposits	6. DEPOSITS Total deposits at March 31, 2018 and December 31, 2017 are summarized as follows (in thousands): Percentage March 31, December 31, Checking, non-interest (3.4 %) $ 311,052 $ 321,858 Checking, interest bearing 4.7 % 592,075 565,399 Savings accounts 1.6 % 930,108 915,587 Certificates of deposit 3.2 % 376,820 364,971 1.9 % $ 2,210,055 $ 2,167,815

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	7. EARNINGS PER SHARE Basic earnings per share is computed by dividing net income 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. For the three months ended March 31, 2018 and 2017, there were no outstanding stock options to include in the diluted earnings per share calculations. 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 The computation of basic and diluted earnings per share is shown below: Three months ended March 31, 2018 2017 Basic earnings per common share computation: Net income per consolidated statements of income $ 7,097 $ 6,480 Net earnings allocated to participating securities (34 ) (39 ) Net earnings allocated to common stock $ 7,063 $ 6,441 Distributed earnings allocated to common stock $ 2,509 $ 2,508 Undistributed earnings allocated to common stock 4,554 3,933 Net earnings allocated to common stock $ 7,063 $ 6,441 Weighted average common shares outstanding, including shares considered participating securities 15,273 14,979 Less: Average participating securities (72 ) (86 ) Weighted average shares 15,201 14,893 Basic earnings per common share $ 0.46 $ 0.43 Diluted earnings per common share computation: Net earnings allocated to common stock $ 7,063 $ 6,441 Weighted average common shares outstanding for basic earnings per common share 15,201 14,893 Add: Dilutive effects of assumed exercises of stock options 0 0 Weighted average shares and dilutive potential common shares 15,201 14,893 Diluted earnings per common share $ 0.46 $ 0.43

Derivative Instruments

Derivative Instruments	3 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	8. DERIVATIVE INSTRUMENTS 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 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, 2013 to September 15, 2018 without exchange of the underlying notional amount. At March 31, 2018, the variable rate on the subordinated debt was 3.43% (LIBOR plus 155 basis points) and the Corporation was paying 5.57% (4.02% fixed rate plus 155 basis points). As of March 31, 2018 and December 31, 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 March 31, 2018 and December 31, 2017 and for the three months ended March 31, 2018 and 2017: Fair value as of Balance Sheet March 31, December 31, Location 2018 2017 Interest rate contracts Accrued interest and other liabilities $ (83 ) $ (161 ) For the Three Months Ended March 31, 2018 (a) (b) (c) (d) (e) Interest rate contracts $ 62 Interest expense – $ (58 ) Other $ 0 For the Three Months Ended March 31, 2017 (a) (b) (c) (d) (e) Interest rate contracts $ 55 Interest expense – $ (76 ) 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 Gain or (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 $217. As of March 31, 2018 and December 31, 2017, a cash collateral balance in the amount of $1,400 was maintained with a counterparty to the interest rate swaps. These balances are included in interest bearing deposits with other banks on the consolidated balance sheet. The Corporation has 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 Corporation pledged cash collateral to another financial institution with a balance $750 as of both March 31, 2018 and December 31, 2017. This balance is included in interest bearing deposits with other banks on the consolidated balance sheets. The Corporation does not require its customers to post cash or securities as collateral on its program of back-to-back The following table provides information about the amounts and locations of activity related to the back-to-back Notional Weighted Weighted Weighted Average Fair March 31, 2018 3 rd $ 11,772 7.8 4.52 % 1 month LIBOR + 2.37% $ (146 )(a) Customer interest rate swaps (11,772 ) 7.8 4.52 % 1 month LIBOR + 2.37% 146 (b) December 31, 2017 3 rd $ 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

Revenue from Contracts with Cus

Revenue from Contracts with Customers	3 Months Ended
	Mar. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	9. REVENUE FROM CONTRACTS WITH CUSTOMERS The Corporation adopted Accounting Standards Update (ASU) 2014-09, 2014-09 2014-09 in-scope Management determined that the primary sources of revenue emanating from interest and dividend income on loans and investment securities along with non-interest 2014-09. The following table depicts the disaggregation of revenue derived from contracts with customers to depict the nature, amount, timing, and uncertainty of revenue and cash flows for the three months ended March 31, 2018 and 2017. Three Months Three Months Ended Ended March 31, 2018 March 31, 2017 Non-interest Service charges on deposit accounts $ 1,247 $ 1,090 Wealth and asset management fees 1,030 871 Mortgage banking (1) 208 184 Card processing and interchange income 971 878 Net gains (losses) on sales of securities (1) 0 1,383 Other income (1) 1,295 1,367 Total non-interest $ 4,751 $ 5,773 (1) Not within scope of ASU 2014-09 The types of non-interest Service Charges on Deposit Accounts Wealth and Asset Management Fees Card processing and interchange income

Contingency

Contingency	3 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Contingency	10. 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 as of March 31, 2018, which has been accrued and reported in accrued interest payable and other liabilities in the accompanying consolidated balance sheet. 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 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.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2018
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	11. RECENT ACCOUNTING PRONOUNCEMENTS In January 2017, the FASB issued an update (ASU 2017-04, 2017-04 In August 2016, the FASB issued an update (ASU 2016-15, not-for-profit 2016-15 In June 2016, the FASB issued an update (ASU 2016-13, 2016-13 2016-13 2016-13 In February 2016, the FASB issued Accounting Standards Update 2016-02, 2016-02 right-of-use ASU 2016-02 In January 2016, the FASB issued Accounting Standards Update 2016-01, 2016-01 non-public non-recurring 2016-01

Recent Accounting Pronounceme20

Recent Accounting Pronouncements (Policies)	3 Months Ended
	Mar. 31, 2018
Accounting Changes and Error Corrections [Abstract]
Adoption of New Accounting Standards	In January 2017, the FASB issued an update (ASU 2017-04, 2017-04 In August 2016, the FASB issued an update (ASU 2016-15, not-for-profit 2016-15 In June 2016, the FASB issued an update (ASU 2016-13, 2016-13 2016-13 2016-13 In February 2016, the FASB issued Accounting Standards Update 2016-02, 2016-02 right-of-use ASU 2016-02 In January 2016, the FASB issued Accounting Standards Update 2016-01, 2016-01 non-public non-recurring 2016-01

Stock Compensation (Tables)

Stock Compensation (Tables)	3 Months Ended
	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Changes in Nonvested Restricted Stock Awards	A summary of changes in time-based nonvested restricted stock awards for the three months ended March 31, 2018 follows: Per Share Weighted Average Shares Grant Date Fair Value Nonvested at beginning of period 94,472 $ 20.79 Granted 22,108 26.92 Vested (40,105 ) 19.69 Nonvested at end of period 76,475 $ 23.07

Fair Value (Tables)

Fair Value (Tables)	3 Months Ended
	Mar. 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 March 31, 2018 and December 31, 2017: Fair Value Measurements at March 31, 2018 Using Quoted Prices in Significant Active Markets for Significant Other Unobservable Identical Assets Observable Inputs Inputs Description Total (Level 1) (Level 2) (Level 3) Assets: Securities Available For Sale: U.S. Government sponsored entities $ 111,921 $ 0 $ 111,921 $ 0 States and political subdivisions 133,466 0 133,466 0 Residential and multi-family mortgage 120,630 0 120,630 0 Corporate notes and bonds 17,194 0 17,194 0 Pooled SBA 34,145 0 34,145 0 Other 943 943 0 0 Total Securities Available For Sale $ 418,299 $ 943 $ 417,356 $ 0 Interest Rate swaps $ 146 $ 0 $ 146 $ 0 Trading Securities: Corporate equity securities $ 5,172 $ 5,172 $ 0 $ 0 Mutual funds 1,612 1,612 0 0 Certificates of deposit 170 170 0 0 Corporate notes and bonds 250 250 0 0 U.S. Government sponsored entities 52 0 52 0 Total Trading Securities $ 7,256 $ 7,204 $ 52 $ 0 Liabilities, Interest rate swaps $ (229 ) $ 0 $ (229 ) $ 0 Fair Value Measurements at December 31, 2017 Using Quoted Prices in Significant Active Markets for Significant Other Unobservable Identical Assets Observable Inputs Inputs Description Total (Level 1) (Level 2) (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 three months ended March 31, 2018 and 2017: 2018 2017 Balance, January 1 $ 0 $ 2,049 Total gains: Included in other comprehensive income (unrealized) 0 134 Sale of available-for-sale 0 (2,183 ) Balance, March 31 $ 0 $ 0
Assets and Liabilities Measured at Fair Value on Non-Recurring Basis	Assets and liabilities measured at fair value on a non-recurring Fair Value Measurements at March 31, 2018 Using Quoted Prices in Significant Active Markets for Significant Other Unobservable Identical Assets Observable Inputs Inputs Description Total (Level 1) (Level 2) (Level 3) Assets: Impaired loans: Commercial mortgages $ 60 0 0 $ 60 Fair Value Measurements at December 31, 2017 Using Quoted Prices in Significant Active Markets for Significant Other Unobservable Identical Assets Observable Inputs Inputs Description Total (Level 1) (Level 2) (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 Fair Valuation Technique Unobservable Inputs Range Impaired loans – commercial mortgages $ 60 Discounted cash flow method Discount used in discounted cash flow method 10% (10%) The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring Fair Valuation Technique Unobservable Inputs Range Impaired loans – commercial mortgages $ 11 Discounted cash flow method Discount used in discounted cash flow method 10% (10%)
Carrying Amount and Fair Value of Financial Instruments	The following table presents the carrying amount and fair value of financial instruments at March 31, 2018: Carrying Fair Value Measurement Using: Total Amount Level 1 Level 2 Level 3 Fair Value ASSETS Cash and cash equivalents $ 28,604 $ 28,604 $ 0 $ 0 $ 28,604 Securities available for sale 418,299 943 417,356 0 418,299 Trading securities 7,256 7,204 52 0 7,256 Loans held for sale 1,460 0 1,460 0 1,460 Net loans 2,255,368 0 0 2,226,877 2,226,877 FHLB and other restricted interests 21,377 n/a n/a n/a n/a Other equity interests 5,187 5,187 Interest rate swaps 146 0 146 0 146 Accrued interest receivable 9,853 7 3,117 6,729 9,853 LIABILITIES Deposits $ (2,210,055 ) $ (1,833,235 ) $ (378,985 ) $ 0 $ (2,212,220 ) FHLB and other borrowings (356,398 ) 0 (351,547 ) 0 (351,547 ) Subordinated debentures (70,620 ) 0 (69,767 ) 0 (69,767 ) Interest rate swaps (229 ) 0 (229 ) 0 (229 ) Accrued interest payable (638 ) 0 (638 ) 0 (638 ) The following table presents the carrying amount and fair value of financial instruments at December 31, 2017: Carrying Fair Value Measurement Using: Total Amount Level 1 Level 2 Level 3 Fair Value 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 restricted interests 17,035 n/a n/a n/a n/a Other equity interests 4,482 4,482 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 )

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2018
Cash and Cash Equivalents [Abstract]
Securities Available for Sale	Securities available for sale at March 31, 2018 and December 31, 2017 are as follows: March 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 $ 113,341 $ 334 $ (1,754 ) $ 111,921 $ 108,578 $ 478 $ (908 ) $ 108,148 State & political subdivisions 131,608 2,616 (758 ) 133,466 134,428 3,609 (314 ) 137,723 Residential & multi-family mortgage 123,995 104 (3,469 ) 120,630 111,214 304 (1,882 ) 109,636 Corporate notes & bonds 17,608 45 (459 ) 17,194 17,610 52 (462 ) 17,200 Pooled SBA 35,145 113 (1,113 ) 34,145 36,260 355 (575 ) 36,040 Other 1,020 0 (77 ) 943 1,020 0 (58 ) 962 Total $ 422,717 $ 3,212 $ (7,630 ) $ 418,299 $ 409,110 $ 4,798 $ (4,199 ) $ 409,709
Trading Securities	Trading securities at March 31, 2018 and December 31, 2017 are as follows: March 31, December 31, Corporate equity securities $ 5,172 $ 5,125 Mutual funds 1,612 1,499 Certificates of deposit 170 220 Corporate notes and bonds 250 254 U.S. Government sponsored entities 52 52 Total $ 7,256 $ 7,150
Securities with Unrealized Losses Aggregated by Investment Category and Length of Time that Individual Securities have been in Continuous Unrealized Loss Position	Securities with unrealized losses at March 31, 2018 and December 31, 2017, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, are as follows: March 31, 2018 Less than 12 Months 12 Months or More Total Description of Securities Fair Unrealized Fair Unrealized Fair Unrealized U.S. Gov’t sponsored entities $ 63,833 $ (1,262 ) $ 34,590 $ (492 ) $ 98,423 $ (1,754 ) State & political subdivisions 61,022 (456 ) 4,045 (302 ) 65,067 (758 ) Residential & multi-family mortgage 50,017 (913 ) 59,984 (2,556 ) 110,001 (3,469 ) Corporate notes & bonds 5,225 (38 ) 9,077 (421 ) 14,302 (459 ) Pooled SBA 7,513 (67 ) 21,272 (1,046 ) 28,785 (1,113 ) Other 0 (0 ) 943 (77 ) 943 (77 ) $ 187,610 $ (2,736 ) $ 129,911 $ (4,894 ) $ 317,521 $ (7,630 ) December 31, 2017 Less than 12 Months 12 Months or More Total Fair Unrealized Fair Unrealized Fair Unrealized 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 three months ended March 31, 2018 and 2017 is as follows: 2018 2017 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 Credit losses previously recognized on securities sold during the period 0 (2,071 ) Additional credit loss for which other-than-temporary impairment was not previously recognized 0 0 Additional credit loss for which other-than-temporary impairment was previously recognized 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
Information Pertaining to Security Sales	Information pertaining to security sales on available for sale securities is as follows: Proceeds Gross Gross Three months ended March 31, 2018 $ 0 $ 0 $ 0 Three months ended March 31, 2017 $ 2,183 $ 1,383 $ 0
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 equity securities, at March 31, 2018: Amortized Fair Cost Value 1 year or less $ 58,820 $ 58,626 1 year – 5 years 154,027 154,001 5 years – 10 years 43,991 44,236 After 10 years 5,719 5,718 262,557 262,581 Residential and multi-family mortgage 123,995 120,630 Pooled SBA 35,145 34,145 Total debt securities $ 421,697 $ 417,356

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Schedule of Net Loans	Total net loans at March 31, 2018 and December 31, 2017 are summarized as follows: March 31, December 31, Commercial, industrial, and agricultural $ 773,473 $ 749,138 Commercial mortgages 694,517 600,065 Residential real estate 725,683 713,347 Consumer 77,981 80,193 Credit cards 6,965 6,753 Overdrafts 1,134 352 Less: unearned discount (3,629 ) (3,889 ) allowance for loan losses (20,756 ) (19,693 ) Loans, net $ 2,255,368 $ 2,126,266
Allowance for Loan Losses	Transactions in the allowance for loan losses for the three months ended March 31, 2018 were as follows: Commercial, Residential Industrial, and Commercial Real Credit Agricultural Mortgages Estate Consumer Cards Overdrafts Total Allowance for loan losses, January 1, 2018 $ 6,160 $ 9,007 $ 2,033 $ 2,179 $ 120 $ 194 $ 19,693 Charge-offs (31 ) 0 0 (590 ) (19 ) (86 ) (726 ) Recoveries 68 0 3 49 7 31 158 Provision for loan losses 85 1,013 16 427 15 75 1,631 Allowance for loan losses, March 31, 2018 $ 6,282 $ 10,020 $ 2,052 $ 2,065 $ 123 $ 214 $ 20,756 Transactions in the allowance for loan losses for the three months ended March 31, 2017 were as follows: Commercial, Residential Industrial, and Commercial Real Credit Agricultural Mortgages Estate Consumer Cards Overdrafts Total Allowance for loan losses, January 1, 2017 $ 5,428 $ 6,753 $ 1,653 $ 2,215 $ 93 $ 188 $ 16,330 Charge-offs (1 ) 0 (68 ) (735 ) (58 ) (69 ) (931 ) Recoveries 12 2 71 2 11 33 131 Provision (benefit) for loan losses (654 ) 602 366 607 59 36 1,016 Allowance for loan losses, March 31, 2017 $ 4,785 $ 7,357 $ 2,022 $ 2,089 $ 105 $ 188 $ 16,546
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 March 31, 2018 and December 31, 2017. The recorded investment in loans excludes accrued interest and unearned discounts due to their insignificance. March 31, 2018 Commercial, Commercial Residential Consumer Credit Overdrafts Total Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ 20 $ 2 $ 0 $ 0 $ 0 $ 0 $ 22 Collectively evaluated for impairment 5,984 3,850 2,052 2,065 123 214 14,288 Acquired with deteriorated credit quality 0 0 0 0 0 0 0 Modified in a troubled debt restructuring 278 6,168 0 0 0 0 6,446 Total ending allowance balance $ 6,282 $ 10,020 $ 2,052 $ 2,065 $ 123 $ 214 $ 20,756 Loans: Individually evaluated for impairment $ 1,418 $ 1,892 $ 0 $ 0 $ 0 $ 0 $ 3,310 Collectively evaluated for impairment 766,905 679,271 725,683 77,981 6,965 1,134 2,257,939 Acquired with deteriorated credit quality 0 1,144 0 0 0 0 1,144 Modified in a troubled debt restructuring 5,150 12,210 0 0 0 0 17,360 Total ending loans balance $ 773,473 $ 694,517 $ 725,683 $ 77,981 $ 6,965 $ 1,134 $ 2,279,753 December 31, 2017 Commercial, Commercial Residential Consumer Credit 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 742,738 586,845 713,347 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 $ 749,138 $ 600,065 $ 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 March 31, 2018 and December 31, 2017 and for the three months ended March 31, 2018 and 2017: March 31, 2018 Unpaid Principal Recorded Allowance for Loan With an allowance recorded: Commercial, industrial, and agricultural $ 1,861 $ 1,852 $ 298 Commercial mortgage 9,290 9,007 6,170 Residential real estate 0 0 0 With no related allowance recorded: Commercial, industrial, and agricultural 5,478 4,716 0 Commercial mortgage 6,054 5,095 0 Residential real estate 0 0 0 Total $ 22,683 $ 20,670 $ 6,468 December 31, 2017 Unpaid Principal Recorded Allowance for Loan 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
Impaired Financing Receivables with Related and not Related Allowances	The unpaid principal balance of impaired loans includes the Corporation’s recorded investment in the loan and amounts that have been charged off. Three Months Ended March 31, 2018 Average Interest Cash Basis Recorded Income Interest Investment Recognized Recognized With an allowance recorded: Commercial, industrial, and agricultural $ 1,884 $ 22 $ 22 Commercial mortgage 9,234 18 18 Residential real estate 0 0 0 With no related allowance recorded: Commercial, industrial, and agricultural 4,600 46 46 Commercial mortgage 3,753 13 13 Residential real estate 0 0 0 Total $ 19,491 $ 99 $ 99 Three Months Ended March 31, 2017 Average Interest Cash Basis Recorded Income Interest Investment Recognized Recognized With an allowance recorded: Commercial, industrial, and agricultural $ 1,636 $ 18 $ 18 Commercial mortgage 15,270 145 145 Residential real estate 0 0 0 With no related allowance recorded: Commercial, industrial, and agricultural 1,712 16 16 Commercial mortgage 0 0 0 Residential real estate 0 0 0 Total $ 18,618 $ 179 $ 179
Nonaccrual Loans and Loans Past Due over 90 Days Still Accruing Interest by Class of Loans	The following table presents the recorded investment in nonaccrual loans and loans past due over 90 days still accruing interest by class of loans as of March 31, 2018 and December 31, 2017: March 31, 2018 December 31, 2017 Nonaccrual Past Due Nonaccrual Past Due Commercial, industrial, and agricultural $ 2,737 $ 0 $ 1,869 $ 78 Commercial mortgages 11,361 0 11,065 0 Residential real estate 5,038 425 5,470 338 Consumer 614 13 828 17 Credit cards 0 37 0 44 Total $ 19,750 $ 475 $ 19,232 $ 477
Aging of Recorded Investment in Past Due Loans	The following table presents the aging of the recorded investment in past due loans as of March 31, 2018 and December 31, 2017 by class of loans. March 31, 2018 30-59 Days 60-89 Days Greater Than Total Loans Not Total Commercial, industrial, and agricultural $ 2,371 $ 173 $ 935 $ 3,479 $ 769,994 $ 773,473 Commercial mortgages 3 314 1,714 2,031 692,486 694,517 Residential real estate 1,565 1,596 4,471 7,632 718,051 725,683 Consumer 376 447 580 1,403 76,578 77,981 Credit cards 30 5 37 72 6,893 6,965 Overdrafts 0 0 0 0 1,134 1,134 Total $ 4,345 $ 2,535 $ 7,737 $ 14,617 $ 2,265,136 $ 2,279,753 December 31, 2017 30-59 Days 60-89 Days Greater Than Total Loans Not Total Commercial, industrial, and agricultural $ 2,745 $ 646 $ 748 $ 4,139 $ 744,999 $ 749,138 Commercial mortgages 233 0 292 525 599,540 600,065 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 31 10 44 85 6,668 6,753 Overdrafts 0 0 0 0 352 352 Total $ 5,753 $ 2,457 $ 6,551 $ 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 March 31, 2018 and December 31, 2017. March 31, 2018 December 31, 2017 Number of Loan Specific Number of Loan Specific Commercial, industrial, and agricultural 10 $ 5,150 $ 278 10 $ 5,213 $ 245 Commercial mortgages 9 12,210 6,168 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 19 $ 17,360 $ 6,446 19 $ 17,303 $ 5,689
Schedule of Loan Assigned Risk Rating within 12 Months of Balance Sheet Date	All loans included in the following tables have been assigned a risk rating within 12 months of the balance sheet date. March 31, 2018 Pass Special Substandard Doubtful Total Commercial, industrial, and agricultural $ 740,558 $ 9,513 $ 23,402 $ 0 $ 773,473 Commercial mortgages 676,688 2,771 15,058 0 694,517 Total $ 1,417,246 $ 12,284 $ 38,460 $ 0 $ 1,467,990 December 31, 2017 Pass Special Substandard Doubtful Total Commercial, industrial, and agricultural $ 713,102 $ 16,726 $ 19,310 $ 0 $ 749,138 Commercial mortgages 581,631 4,419 14,015 0 600,065 Total $ 1,294,733 $ 21,145 $ 33,325 $ 0 $ 1,349,203
Recorded Investment in Residential, Consumer and Credit Card Loans Based on Payment Activity	The following table presents the recorded investment in residential, consumer, and credit card loans based on payment activity as of March 31, 2018 and December 31, 2017: March 31, 2018 December 31, 2017 Residential Credit Residential Credit Real Estate Consumer Cards Real Estate Consumer Cards Performing $ 720,220 $ 77,354 $ 6,928 $ 707,539 $ 79,348 $ 6,709 Nonperforming 5,463 627 37 5,808 845 44 Total $ 725,683 $ 77,981 $ 6,965 $ 713,347 $ 80,193 $ 6,753
Summary of Holiday's Loan Portfolio	Holiday’s loan portfolio is summarized as follows at March 31, 2018 and December 31, 2017: March 31, December 31, 2018 2017 Consumer $ 21,892 $ 23,428 Less: unearned discount (3,629 ) (3,889 ) Total $ 18,263 $ 19,539

Deposits (Tables)

Deposits (Tables)	3 Months Ended
	Mar. 31, 2018
Banking and Thrift [Abstract]
Total Deposits	Total deposits at March 31, 2018 and December 31, 2017 are summarized as follows (in thousands): Percentage March 31, December 31, Checking, non-interest (3.4 %) $ 311,052 $ 321,858 Checking, interest bearing 4.7 % 592,075 565,399 Savings accounts 1.6 % 930,108 915,587 Certificates of deposit 3.2 % 376,820 364,971 1.9 % $ 2,210,055 $ 2,167,815

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 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: Three months ended March 31, 2018 2017 Basic earnings per common share computation: Net income per consolidated statements of income $ 7,097 $ 6,480 Net earnings allocated to participating securities (34 ) (39 ) Net earnings allocated to common stock $ 7,063 $ 6,441 Distributed earnings allocated to common stock $ 2,509 $ 2,508 Undistributed earnings allocated to common stock 4,554 3,933 Net earnings allocated to common stock $ 7,063 $ 6,441 Weighted average common shares outstanding, including shares considered participating securities 15,273 14,979 Less: Average participating securities (72 ) (86 ) Weighted average shares 15,201 14,893 Basic earnings per common share $ 0.46 $ 0.43 Diluted earnings per common share computation: Net earnings allocated to common stock $ 7,063 $ 6,441 Weighted average common shares outstanding for basic earnings per common share 15,201 14,893 Add: Dilutive effects of assumed exercises of stock options 0 0 Weighted average shares and dilutive potential common shares 15,201 14,893 Diluted earnings per common share $ 0.46 $ 0.43

Derivative Instruments (Tables)

Derivative Instruments (Tables)	3 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Amounts and Locations of Activity Related to Interest Rate Swaps Designated as Cash Flow Hedges within Corporation's Consolidated Balance Sheet and Statement of Income	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 March 31, 2018 and December 31, 2017 and for the three months ended March 31, 2018 and 2017: Fair value as of Balance Sheet March 31, December 31, Location 2018 2017 Interest rate contracts Accrued interest and other liabilities $ (83 ) $ (161 ) For the Three Months Ended March 31, 2018 (a) (b) (c) (d) (e) Interest rate contracts $ 62 Interest expense – $ (58 ) Other $ 0 For the Three Months Ended March 31, 2017 (a) (b) (c) (d) (e) Interest rate contracts $ 55 Interest expense – $ (76 ) 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 Gain or (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 within Corporation's Consolidated Balance Sheet	The following table provides information about the amounts and locations of activity related to the back-to-back Notional Weighted Weighted Weighted Average Fair March 31, 2018 3 rd $ 11,772 7.8 4.52 % 1 month LIBOR + 2.37% $ (146 )(a) Customer interest rate swaps (11,772 ) 7.8 4.52 % 1 month LIBOR + 2.37% 146 (b) December 31, 2017 3 rd $ 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

Revenue from Contracts with C28

Revenue from Contracts with Customers (Tables)	3 Months Ended
	Mar. 31, 2018
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue Derived from Contracts with Customers	The following table depicts the disaggregation of revenue derived from contracts with customers to depict the nature, amount, timing, and uncertainty of revenue and cash flows for the three months ended March 31, 2018 and 2017. Three Months Three Months Ended Ended March 31, 2018 March 31, 2017 Non-interest Service charges on deposit accounts $ 1,247 $ 1,090 Wealth and asset management fees 1,030 871 Mortgage banking (1) 208 184 Card processing and interchange income 971 878 Net gains (losses) on sales of securities (1) 0 1,383 Other income (1) 1,295 1,367 Total non-interest $ 4,751 $ 5,773 (1) Not within scope of ASU 2014-09

Stock Compensation - Additional

Stock Compensation - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of nonqualified options or restricted stock for key employees and independent director	500,000
Description of award terms	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 is 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.
Unrecognized compensation cost related to nonvested stock options granted	$ 0
Shares, granted	0	0
Compensation expense restricted stock awards	$ 674,000	$ 189,000
Vested, Shares	40,105
Fair value of shares vesting during period	$ 1,462,000	$ 917,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to nonvested restricted stock	1,584,000
Restricted Stock Units (RSUs) [Member] | Vested Immediately [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense restricted stock awards	$ 385,000
Vested, Shares	15,600
Performance Based Restricted Stock Awards [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, granted	15,702		10,000
Independent Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Starting period of vesting of stock based award	1 year
Aggregate percentage of stock based awards to be matured	100.00%
Stock incentive plan, vesting per year	33.33%
Award vesting period	3 years
Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Starting period of vesting of stock based award	1 year
Aggregate percentage of stock based awards to be matured	100.00%
Stock incentive plan, vesting per year	25.00%
Award vesting period	4 years

Stock Compensation - Summary of

Stock Compensation - Summary of Changes in Time-based Nonvested Restricted Stock Awards (Detail)	3 Months Ended
	Mar. 31, 2018$ / sharesshares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Nonvested at beginning of period, Shares | shares	94,472
Granted, Shares | shares	22,108
Vested, Shares | shares	(40,105)
Nonvested at end of period, Shares | shares	76,475
Nonvested at beginning of period, Weighted-average Grant Date Fair Value | $ / shares	$ 20.79
Granted, Weighted-average Grant Date Fair Value | $ / shares	26.92
Vested, Weighted-average Grant Date Fair Value | $ / shares	19.69
Nonvested at end of period, Weighted-average Grant Date Fair Value | $ / shares	$ 23.07

Fair Value - Assets and Liabili

Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Securities Available For Sale:
Securities available for sale	$ 418,299	$ 409,709
Trading Securities:
Trading securities	7,256	7,150
Certificates of Deposit [Member]
Trading Securities:
Trading securities	170	220
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities Available For Sale:
Securities available for sale	943	962
Interest rate swaps	0	0
Trading Securities:
Trading securities	7,204	7,098
Liabilities
Interest rate swaps	0	0
Significant Other Observable Inputs (Level 2) [Member]
Securities Available For Sale:
Securities available for sale	417,356	408,747
Interest rate swaps	146	149
Trading Securities:
Trading securities	52	52
Liabilities
Interest rate swaps	(229)	(310)
Significant Unobservable Inputs (Level 3) [Member]
Securities Available For Sale:
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 Measurement on Recurring Basis [Member]
Securities Available For Sale:
Securities available for sale	418,299	409,709
Interest rate swaps	146	149
Trading Securities:
Trading securities	7,256	7,150
Liabilities
Interest rate swaps	(229)	(310)
Fair Value Measurement on Recurring Basis [Member] | U.S. Government Sponsored Entities [Member]
Securities Available For Sale:
Securities available for sale	111,921	108,148
Trading Securities:
Trading securities	52	52
Fair Value Measurement on Recurring Basis [Member] | States and Political Subdivisions [Member]
Securities Available For Sale:
Securities available for sale	133,466	137,723
Fair Value Measurement on Recurring Basis [Member] | Residential and Multi-Family Mortgage [Member]
Securities Available For Sale:
Securities available for sale	120,630	109,636
Fair Value Measurement on Recurring Basis [Member] | Corporate Notes and Bonds [Member]
Securities Available For Sale:
Securities available for sale	17,194	17,200
Trading Securities:
Trading securities	250	254
Fair Value Measurement on Recurring Basis [Member] | Pooled SBA [Member]
Securities Available For Sale:
Securities available for sale	34,145	36,040
Fair Value Measurement on Recurring Basis [Member] | Other [Member]
Securities Available For Sale:
Securities available for sale	943	962
Fair Value Measurement on Recurring Basis [Member] | Corporate Equity Securities [Member]
Trading Securities:
Trading securities	5,172	5,125
Fair Value Measurement on Recurring Basis [Member] | Mutual Funds [Member]
Trading Securities:
Trading securities	1,612	1,499
Fair Value Measurement on Recurring Basis [Member] | Certificates of Deposit [Member]
Trading Securities:
Trading securities	170	220
Fair Value Measurement on Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Securities Available For Sale:
Securities available for sale	943	962
Interest rate swaps	0	0
Trading Securities:
Trading securities	7,204	7,098
Liabilities
Interest rate swaps	0	0
Fair Value Measurement on Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Government Sponsored Entities [Member]
Securities Available For Sale:
Securities available for sale	0	0
Trading Securities:
Trading securities	0	0
Fair Value Measurement on Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | States and Political Subdivisions [Member]
Securities Available For Sale:
Securities available for sale	0	0
Fair Value Measurement on Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Residential and Multi-Family Mortgage [Member]
Securities Available For Sale:
Securities available for sale	0	0
Fair Value Measurement on Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Corporate Notes and Bonds [Member]
Securities Available For Sale:
Securities available for sale	0	0
Trading Securities:
Trading securities	250	254
Fair Value Measurement on Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Pooled SBA [Member]
Securities Available For Sale:
Securities available for sale	0	0
Fair Value Measurement on Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Other [Member]
Securities Available For Sale:
Securities available for sale	943	962
Fair Value Measurement on Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Corporate Equity Securities [Member]
Trading Securities:
Trading securities	5,172	5,125
Fair Value Measurement on Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Mutual Funds [Member]
Trading Securities:
Trading securities	1,612	1,499
Fair Value Measurement on Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Certificates of Deposit [Member]
Trading Securities:
Trading securities	170	220
Fair Value Measurement on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member]
Securities Available For Sale:
Securities available for sale	417,356	408,747
Interest rate swaps	146	149
Trading Securities:
Trading securities	52	52
Liabilities
Interest rate swaps	(229)	(310)
Fair Value Measurement on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Government Sponsored Entities [Member]
Securities Available For Sale:
Securities available for sale	111,921	108,148
Trading Securities:
Trading securities	52	52
Fair Value Measurement on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | States and Political Subdivisions [Member]
Securities Available For Sale:
Securities available for sale	133,466	137,723
Fair Value Measurement on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Residential and Multi-Family Mortgage [Member]
Securities Available For Sale:
Securities available for sale	120,630	109,636
Fair Value Measurement on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Corporate Notes and Bonds [Member]
Securities Available For Sale:
Securities available for sale	17,194	17,200
Trading Securities:
Trading securities	0	0
Fair Value Measurement on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Pooled SBA [Member]
Securities Available For Sale:
Securities available for sale	34,145	36,040
Fair Value Measurement on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Other [Member]
Securities Available For Sale:
Securities available for sale	0	0
Fair Value Measurement on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Corporate Equity Securities [Member]
Trading Securities:
Trading securities	0	0
Fair Value Measurement on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Mutual Funds [Member]
Trading Securities:
Trading securities	0	0
Fair Value Measurement on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Certificates of Deposit [Member]
Trading Securities:
Trading securities	0	0
Fair Value Measurement on Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member]
Securities Available For Sale:
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 Measurement on Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member] | U.S. Government Sponsored Entities [Member]
Securities Available For Sale:
Securities available for sale	0	0
Trading Securities:
Trading securities	0	0
Fair Value Measurement on Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member] | States and Political Subdivisions [Member]
Securities Available For Sale:
Securities available for sale	0	0
Fair Value Measurement on Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member] | Residential and Multi-Family Mortgage [Member]
Securities Available For Sale:
Securities available for sale	0	0
Fair Value Measurement on Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member] | Corporate Notes and Bonds [Member]
Securities Available For Sale:
Securities available for sale	0	0
Trading Securities:
Trading securities	0	0
Fair Value Measurement on Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member] | Pooled SBA [Member]
Securities Available For Sale:
Securities available for sale	0	0
Fair Value Measurement on Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member] | Other [Member]
Securities Available For Sale:
Securities available for sale	0	0
Fair Value Measurement on Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member] | Corporate Equity Securities [Member]
Trading Securities:
Trading securities	0	0
Fair Value Measurement on Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mutual Funds [Member]
Trading Securities:
Trading securities	0	0
Fair Value Measurement on Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member] | Certificates of Deposit [Member]
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) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Beginning Balance	$ 0	$ 2,049
Total gains:
Included in other comprehensive income (unrealized)	0	134
Sale of available-for-sale securities	0	(2,183)
Ending Balance	$ 0	$ 0

Fair Value - Assets and Liabi33

Fair Value - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Detail) - Commercial Mortgages [Member] - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Impaired loans:
Fair value assets and liabilities measured on a nonrecurring basis	$ 60	$ 11
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Impaired loans:
Fair value assets and liabilities measured on a nonrecurring basis	0	0
Significant Other Observable Inputs (Level 2) [Member]
Impaired loans:
Fair value assets and liabilities measured on a nonrecurring basis	0	0
Significant Unobservable Inputs (Level 3) [Member]
Impaired loans:
Fair value assets and liabilities measured on a nonrecurring basis	$ 60	$ 11

Fair Value - Additional Informa

Fair Value - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired loans, recorded investment	$ 20,670		$ 18,541
Impaired loans allowance	6,468		5,736
Collateral Dependent Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired loans, recorded investment	959		646
Impaired loans allowance	899		$ 635
Impaired loans, positive (negative) provisions	$ 264	$ (103)

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) - Impaired Loans - Commercial Mortgages [Member] - Discounted Cash Flow [Member] - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value	$ 60	$ 11
Valuation Technique	10.00%	10.00%
Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Valuation Technique	10.00%	10.00%

Fair Value - Carrying Amount an

Fair Value - Carrying Amount and Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
ASSETS
Cash and cash equivalents	$ 28,604	$ 35,345	$ 28,369	$ 29,183
Securities available for sale	418,299	409,709
Trading securities	7,256	7,150
Loans held for sale	1,460	852
Net loans	2,255,368	2,126,266
Liabilities
Deposits	(2,210,055)	(2,167,815)
Subordinated debentures	(70,620)	(70,620)
Carrying Amount [Member]
ASSETS
Cash and cash equivalents	28,604	35,345
Securities available for sale	418,299	409,709
Trading securities	7,256	7,150
Loans held for sale	1,460	852
Net loans	2,255,368	2,126,266
FHLB and other restricted interests	21,377	17,035
Other equity interests	5,187	4,482
Interest rate swaps	146	149
Accrued interest receivable	9,853	9,254
Liabilities
Deposits	(2,210,055)	(2,167,815)
FHLB and other borrowings	(356,398)	(257,359)
Subordinated debentures	(70,620)	(70,620)
Interest rate swaps	(229)	(310)
Accrued interest payable	(638)	(554)
Total Fair Value [Member]
ASSETS
Cash and cash equivalents	28,604	35,345
Securities available for sale	418,299	409,709
Trading securities	7,256	7,150
Loans held for sale	1,460	853
Net loans	2,226,877	2,126,824
Other equity interests	5,187	4,482
Interest rate swaps	146	149
Accrued interest receivable	9,853	9,254
Liabilities
Deposits	(2,212,220)	(2,165,600)
FHLB and other borrowings	(351,547)	(257,361)
Subordinated debentures	(69,767)	(63,575)
Interest rate swaps	(229)	(310)
Accrued interest payable	(638)	(554)
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
ASSETS
Cash and cash equivalents	28,604	35,345
Securities available for sale	943	962
Trading securities	7,204	7,098
Loans held for sale	0	0
Net loans	0	0
Interest rate swaps	0	0
Accrued interest receivable	7	6
Liabilities
Deposits	(1,833,235)	(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) [Member]
ASSETS
Cash and cash equivalents	0	0
Securities available for sale	417,356	408,747
Trading securities	52	52
Loans held for sale	1,460	853
Net loans	0	0
Interest rate swaps	146	149
Accrued interest receivable	3,117	2,651
Liabilities
Deposits	(378,985)	(362,756)
FHLB and other borrowings	(351,547)	(257,361)
Subordinated debentures	(69,767)	(63,575)
Interest rate swaps	(229)	(310)
Accrued interest payable	(638)	(554)
Significant Unobservable Inputs (Level 3) [Member]
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	2,226,877	2,126,824
Interest rate swaps	0	0
Accrued interest receivable	6,729	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

Securities - Securities Availab

Securities - Securities Available for Sale (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 422,717	$ 409,110
Unrealized Gains	3,212	4,798
Unrealized Losses	(7,630)	(4,199)
Fair Value	418,299	409,709
U.S. Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	113,341	108,578
Unrealized Gains	334	478
Unrealized Losses	(1,754)	(908)
Fair Value	111,921	108,148
States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	131,608	134,428
Unrealized Gains	2,616	3,609
Unrealized Losses	(758)	(314)
Fair Value	133,466	137,723
Residential and Multi-Family Mortgage [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	123,995	111,214
Unrealized Gains	104	304
Unrealized Losses	(3,469)	(1,882)
Fair Value	120,630	109,636
Corporate Notes and Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	17,608	17,610
Unrealized Gains	45	52
Unrealized Losses	(459)	(462)
Fair Value	17,194	17,200
Pooled SBA [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	35,145	36,260
Unrealized Gains	113	355
Unrealized Losses	(1,113)	(575)
Fair Value	34,145	36,040
Other [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,020	1,020
Unrealized Gains	0	0
Unrealized Losses	(77)	(58)
Fair Value	$ 943	$ 962

Securities - Additional Informa

Securities - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)Securities	Mar. 31, 2017USD ($)	Dec. 31, 2017USD ($)Securities
Investments, Debt and Equity Securities [Abstract]
Number of securities holdings | Securities	0		0
Shareholders' equity percentage	10.00%		10.00%
Securities	$ 274,883		$ 319,575
Tax provision related to net realized gains	$ 0	$ 484

Securities - Trading Securities

Securities - Trading Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities	$ 7,256	$ 7,150
Corporate Equity Securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities	5,172	5,125
Mutual Funds [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities	1,612	1,499
Corporate Notes and Bonds [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities	250	254
U.S. Government Sponsored Entities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities	52	52
Certificates of Deposit [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities	$ 170	$ 220

Securities - Securities with Un

Securities - Securities with Unrealized Losses Aggregated by Investment Category and Length of Time that Individual Securities have been in Continuous Unrealized Loss Position (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 187,610	$ 106,735
Less than 12 Months, Unrealized Loss	(2,736)	(771)
12 Months or More, Fair Value	129,911	134,831
12 Months or More, Unrealized Loss	(4,894)	(3,428)
Total, Fair Value	317,521	241,566
Total, Unrealized Loss	(7,630)	(4,199)
U.S. Government Sponsored Entities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	63,833	55,696
Less than 12 Months, Unrealized Loss	(1,262)	(540)
12 Months or More, Fair Value	34,590	34,754
12 Months or More, Unrealized Loss	(492)	(368)
Total, Fair Value	98,423	90,450
Total, Unrealized Loss	(1,754)	(908)
States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	61,022	15,890
Less than 12 Months, Unrealized Loss	(456)	(69)
12 Months or More, Fair Value	4,045	4,104
12 Months or More, Unrealized Loss	(302)	(245)
Total, Fair Value	65,067	19,994
Total, Unrealized Loss	(758)	(314)
Residential and Multi-Family Mortgage [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	50,017	30,144
Less than 12 Months, Unrealized Loss	(913)	(153)
12 Months or More, Fair Value	59,984	63,699
12 Months or More, Unrealized Loss	(2,556)	(1,729)
Total, Fair Value	110,001	93,843
Total, Unrealized Loss	(3,469)	(1,882)
Corporate Notes and Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	5,225	5,005
Less than 12 Months, Unrealized Loss	(38)	(9)
12 Months or More, Fair Value	9,077	9,042
12 Months or More, Unrealized Loss	(421)	(453)
Total, Fair Value	14,302	14,047
Total, Unrealized Loss	(459)	(462)
Pooled SBA [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	7,513	0
Less than 12 Months, Unrealized Loss	(67)	0
12 Months or More, Fair Value	21,272	22,270
12 Months or More, Unrealized Loss	(1,046)	(575)
Total, Fair Value	28,785	22,270
Total, Unrealized Loss	(1,113)	(575)
Other [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Unrealized Loss	0	0
12 Months or More, Fair Value	943	962
12 Months or More, Unrealized Loss	(77)	(58)
Total, Fair Value	943	962
Total, Unrealized Loss	$ (77)	$ (58)

Securities - Roll-Forward of Ot

Securities - Roll-Forward of Other-Than-Temporary Impairment Amount Related to Credit Losses (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Marketable Securities [Abstract]
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
Credit losses previously recognized on securities sold during the period	0	(2,071)
Additional credit loss for which other-than-temporary impairment was not previously recognized	0	0
Additional credit loss for which other-than-temporary impairment was previously recognized	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

Securities - Information Pertai

Securities - Information Pertaining to Security Sales (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Proceeds	$ 0	$ 2,183
Gross Gains	0	1,383
Gross Losses	$ 0	$ 0

Securities - Schedule of Contra

Securities - Schedule of Contractual Maturity of Securities Available for Sale, Excluding Equity Securities (Detail) $ in Thousands	Mar. 31, 2018USD ($)
Schedule of Available-for-sale Securities [Line Items]
1 year or less, Amortized Cost	$ 58,820
1 year - 5 years, Amortized Cost	154,027
5 years - 10 years, Amortized Cost	43,991
After 10 years, Amortized Cost	5,719
Total, Amortized Cost	262,557
1 year or less, Fair Value	58,626
1 year - 5 years, Fair Value	154,001
5 years - 10 years, Fair Value	44,236
After 10 years, Fair Value	5,718
Total, Fair Value	262,581
Total debt securities, Amortized Cost	421,697
Total debt securities, Fair Value	417,356
Residential and Multi-Family Mortgage [Member]
Schedule of Available-for-sale Securities [Line Items]
Mortgage & asset backed securities, Amortized Cost	123,995
Mortgage & asset backed securities, Fair Value	120,630
Pooled SBA [Member]
Schedule of Available-for-sale Securities [Line Items]
Mortgage & asset backed securities, Amortized Cost	35,145
Mortgage & asset backed securities, Fair Value	$ 34,145

Loans - Schedule of Net Loans (

Loans - Schedule of Net Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Loan Portfolio By Loan Grade [Line Items]
Commercial, industrial, and agricultural	$ 773,473	$ 749,138
Commercial mortgages	694,517	600,065
Residential real estate	725,683	713,347
Credit cards	6,965	6,753
Overdrafts	1,134	352
Less: unearned discount	(3,629)	(3,889)
Less: allowance for loan losses	(20,756)	(19,693)
Net loans	2,255,368	2,126,266
Consumer Portfolio Segment [Member]
Loan Portfolio By Loan Grade [Line Items]
Consumer	$ 77,981	$ 80,193

Loans - Additional Information

Loans - Additional Information (Detail)	3 Months Ended		12 Months Ended
	Mar. 31, 2018USD ($)Loans	Mar. 31, 2017Loans	Dec. 31, 2017USD ($)Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net unamortized loan fees | $	$ 3,211,000		$ 2,574,000
Percentage of comprised loan, commercial, industrial and agricultural loans	34.00%		35.00%
Percentage of comprised loan, commercial mortgage loans	31.00%		28.00%
Percentage of loan-to-value to business equipment	80.00%
Percentage of loan-to-value to accounts receivable	75.00%
Percentage of loan-to-value to business inventory	60.00%
Percentage of loan-to-value to real estate	85.00%
Percentage of residential real estate loan in portfolio	32.00%		33.00%
Number of Loans | Loans	19		19
Minimum period to be considered for loan to have defaulted	90 days
Principal balances forgiven in connection with loan restructuring | $	$ 0		$ 0
Outstanding balance of semi annual loans	Greater than $1 million
Outstanding balance of annual loans	Less than $1 million
Trouble Debt Restructuring [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Loans | Loans	0	0
Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum percentage of consumer loan and credit card in portfolio	10.00%		10.00%

Loans - Allowance for Loan Loss

Loans - Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Beginning Balance	$ 19,693	$ 16,330
Charge-offs	(726)	(931)
Recoveries	158	131
Provision (benefit) for loan losses	1,631	1,016
Allowance for loan losses, Ending Balance	20,756	16,546
Commercial, Industrial, and Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Beginning Balance	6,160	5,428
Charge-offs	(31)	(1)
Recoveries	68	12
Provision (benefit) for loan losses	85	(654)
Allowance for loan losses, Ending Balance	6,282	4,785
Commercial Mortgages [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Beginning Balance	9,007	6,753
Charge-offs	0	0
Recoveries	0	2
Provision (benefit) for loan losses	1,013	602
Allowance for loan losses, Ending Balance	10,020	7,357
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Beginning Balance	2,033	1,653
Charge-offs	0	(68)
Recoveries	3	71
Provision (benefit) for loan losses	16	366
Allowance for loan losses, Ending Balance	2,052	2,022
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Beginning Balance	2,179	2,215
Charge-offs	(590)	(735)
Recoveries	49	2
Provision (benefit) for loan losses	427	607
Allowance for loan losses, Ending Balance	2,065	2,089
Credit Cards [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Beginning Balance	120	93
Charge-offs	(19)	(58)
Recoveries	7	11
Provision (benefit) for loan losses	15	59
Allowance for loan losses, Ending Balance	123	105
Overdrafts [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Beginning Balance	194	188
Charge-offs	(86)	(69)
Recoveries	31	33
Provision (benefit) for loan losses	75	36
Allowance for loan losses, Ending Balance	$ 214	$ 188

Loans - Allowance for Loan Lo47

Loans - Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Ending allowance balance attributable to loans:
Allowance for loan losses, Individually evaluated for impairment	$ 22	$ 47
Allowance for loan losses, Collectively evaluated for impairment	14,288	13,957
Allowance for loan losses, Modified in a troubled debt restructuring	6,446	5,689
Acquired with deteriorated credit quality	20,756	19,693	$ 16,546	$ 16,330
Loans:
Loans individually evaluated for impairment	3,310	1,238
Loans collectively evaluated for impairment	2,257,939	2,130,228
Acquired with deteriorated credit quality	1,467,990	1,349,203
Loans modified in a troubled debt restructuring	17,360	17,303
Total ending loans balance	2,279,753	2,149,848
Receivables Acquired with Deteriorated Credit Quality [Member]
Ending allowance balance attributable to loans:
Acquired with deteriorated credit quality	0	0
Loans:
Acquired with deteriorated credit quality	1,144	1,079
Commercial, Industrial, and Agricultural [Member]
Ending allowance balance attributable to loans:
Allowance for loan losses, Individually evaluated for impairment	20	47
Allowance for loan losses, Collectively evaluated for impairment	5,984	5,868
Allowance for loan losses, Modified in a troubled debt restructuring	278	245
Acquired with deteriorated credit quality	6,282	6,160	4,785	5,428
Loans:
Loans individually evaluated for impairment	1,418	1,187
Loans collectively evaluated for impairment	766,905	742,738
Acquired with deteriorated credit quality	773,473	749,138
Loans modified in a troubled debt restructuring	5,150	5,213
Total ending loans balance	773,473	749,138
Commercial, Industrial, and Agricultural [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Ending allowance balance attributable to loans:
Acquired with deteriorated credit quality	0	0
Loans:
Acquired with deteriorated credit quality	0	0
Commercial Mortgages [Member]
Ending allowance balance attributable to loans:
Allowance for loan losses, Individually evaluated for impairment	2	0
Allowance for loan losses, Collectively evaluated for impairment	3,850	3,563
Allowance for loan losses, Modified in a troubled debt restructuring	6,168	5,444
Acquired with deteriorated credit quality	10,020	9,007	7,357	6,753
Loans:
Loans individually evaluated for impairment	1,892	51
Loans collectively evaluated for impairment	679,271	586,845
Acquired with deteriorated credit quality	694,517	600,065
Loans modified in a troubled debt restructuring	12,210	12,090
Total ending loans balance	694,517	600,065
Commercial Mortgages [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Ending allowance balance attributable to loans:
Acquired with deteriorated credit quality	0	0
Loans:
Acquired with deteriorated credit quality	1,144	1,079
Residential Real Estate [Member]
Ending allowance balance attributable to loans:
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	2,052	2,033
Allowance for loan losses, Modified in a troubled debt restructuring	0	0
Acquired with deteriorated credit quality	2,052	2,033	2,022	1,653
Loans:
Loans individually evaluated for impairment	0	0
Loans collectively evaluated for impairment	725,683	713,347
Loans modified in a troubled debt restructuring	0	0
Total ending loans balance	725,683	713,347
Residential Real Estate [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Ending allowance balance attributable to loans:
Acquired with deteriorated credit quality	0	0
Loans:
Acquired with deteriorated credit quality	0	0
Consumer [Member]
Ending allowance balance attributable to loans:
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	2,065	2,179
Allowance for loan losses, Modified in a troubled debt restructuring	0	0
Acquired with deteriorated credit quality	2,065	2,179	2,089	2,215
Loans:
Loans individually evaluated for impairment	0	0
Loans collectively evaluated for impairment	77,981	80,193
Loans modified in a troubled debt restructuring	0	0
Total ending loans balance	77,981	80,193
Consumer [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Ending allowance balance attributable to loans:
Acquired with deteriorated credit quality	0	0
Loans:
Acquired with deteriorated credit quality	0	0
Credit Cards [Member]
Ending allowance balance attributable to loans:
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	123	120
Allowance for loan losses, Modified in a troubled debt restructuring	0	0
Acquired with deteriorated credit quality	123	120	105	93
Loans:
Loans individually evaluated for impairment	0	0
Loans collectively evaluated for impairment	6,965	6,753
Loans modified in a troubled debt restructuring	0	0
Total ending loans balance	6,965	6,753
Credit Cards [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Ending allowance balance attributable to loans:
Acquired with deteriorated credit quality	0	0
Loans:
Acquired with deteriorated credit quality	0	0
Overdrafts [Member]
Ending allowance balance attributable to loans:
Allowance for loan losses, Individually evaluated for impairment	0	0
Allowance for loan losses, Collectively evaluated for impairment	214	194
Allowance for loan losses, Modified in a troubled debt restructuring	0	0
Acquired with deteriorated credit quality	214	194	$ 188	$ 188
Loans:
Loans individually evaluated for impairment	0	0
Loans collectively evaluated for impairment	1,134	352
Loans modified in a troubled debt restructuring	0	0
Total ending loans balance	1,134	352
Overdrafts [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
Ending allowance balance attributable to loans:
Acquired with deteriorated credit quality	0	0
Loans:
Acquired with deteriorated credit quality	$ 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	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, Total	$ 22,683	$ 20,330
Recorded Investment, Total	20,670	18,541
Allowance for Loan Losses Allocated	6,468	5,736
Commercial, Industrial, and Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, Related Allowance	1,861	1,915
Recorded Investment, Related Allowance	1,852	1,915
Allowance for Loan Losses Allocated	298	292
Unpaid Principal Balance, No Related Allowance	5,478	5,264
Recorded Investment, No Related Allowance	4,716	4,485
Allowance for Loan Losses Allocated, No Related Allowance	0	0
Commercial Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, Related Allowance	9,290	9,940
Recorded Investment, Related Allowance	9,007	9,731
Allowance for Loan Losses Allocated	6,170	5,444
Unpaid Principal Balance, No Related Allowance	6,054	3,211
Recorded Investment, No Related Allowance	5,095	2,410
Allowance for Loan Losses Allocated, No Related Allowance	0	0
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance, Related Allowance	0	0
Recorded Investment, Related Allowance	0	0
Allowance for Loan Losses Allocated	0	0
Unpaid Principal Balance, No Related Allowance	0	0
Recorded Investment, No Related Allowance	0	0
Allowance for Loan Losses Allocated, No Related Allowance	$ 0	$ 0

Loans - Impaired Financing Rece

Loans - Impaired Financing Receivables with Related and not Related Allowances (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, Total	$ 19,491	$ 18,618
Interest Income Recognized, Total	99	179
Cash Basis Interest Recognized, Total	99	179
Commercial, Industrial, and Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, Related Allowance	1,884	1,636
Interest Income Recognized, Related Allowance	22	18
Cash Basis Interest Recognized, Related Allowance	22	18
Average Recorded Investment, No Related Allowance	4,600	1,712
Interest Income Recognized, No Related Allowance	46	16
Cash Basis Interest Recognized, No Related Allowance	46	16
Commercial Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, Related Allowance	9,234	15,270
Interest Income Recognized, Related Allowance	18	145
Cash Basis Interest Recognized, Related Allowance	18	145
Average Recorded Investment, No Related Allowance	3,753	0
Interest Income Recognized, No Related Allowance	13	0
Cash Basis Interest Recognized, No Related Allowance	13	0
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, Related Allowance	0	0
Interest Income Recognized, Related Allowance	0	0
Cash Basis Interest Recognized, Related Allowance	0	0
Average Recorded Investment, No Related Allowance	0	0
Interest Income Recognized, No Related Allowance	0	0
Cash Basis Interest Recognized, No Related Allowance	$ 0	$ 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	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	$ 19,750	$ 19,232
Past Due Over 90 Days Still on Accrual	475	477
Commercial, Industrial, and Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	2,737	1,869
Past Due Over 90 Days Still on Accrual	0	78
Commercial Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	11,361	11,065
Past Due Over 90 Days Still on Accrual	0	0
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	5,038	5,470
Past Due Over 90 Days Still on Accrual	425	338
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	614	828
Past Due Over 90 Days Still on Accrual	13	17
Credit Cards [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	0	0
Past Due Over 90 Days Still on Accrual	$ 37	$ 44

Loans - Aging of Recorded Inves

Loans - Aging of Recorded Investment in Past Due Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 14,617	$ 14,761
Loans Not Past Due	2,265,136	2,135,087
Total	2,279,753	2,149,848
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,345	5,753
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,535	2,457
Greater than 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	7,737	6,551
Commercial, Industrial, and Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,479	4,139
Loans Not Past Due	769,994	744,999
Total	773,473	749,138
Commercial, Industrial, and Agricultural [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,371	2,745
Commercial, Industrial, and Agricultural [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	173	646
Commercial, Industrial, and Agricultural [Member] | Greater than 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	935	748
Commercial Mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,031	525
Loans Not Past Due	692,486	599,540
Total	694,517	600,065
Commercial Mortgages [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3	233
Commercial Mortgages [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	314	0
Commercial Mortgages [Member] | Greater than 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,714	292
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	7,632	8,439
Loans Not Past Due	718,051	704,908
Total	725,683	713,347
Residential Real Estate [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,565	2,290
Residential Real Estate [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,596	1,494
Residential Real Estate [Member] | Greater than 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,471	4,655
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,403	1,573
Loans Not Past Due	76,578	78,620
Total	77,981	80,193
Consumer [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	376	454
Consumer [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	447	307
Consumer [Member] | Greater than 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	580	812
Credit Cards [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	72	85
Loans Not Past Due	6,893	6,668
Total	6,965	6,753
Credit Cards [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	30	31
Credit Cards [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5	10
Credit Cards [Member] | Greater than 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	37	44
Overdrafts [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Loans Not Past Due	1,134	352
Total	1,134	352
Overdrafts [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Overdrafts [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Overdrafts [Member] | Greater than 89 Days Past Due [Member]
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	3 Months Ended	12 Months Ended
	Mar. 31, 2018USD ($)Loans	Dec. 31, 2017USD ($)Loans
Financing Receivable, Modifications [Line Items]
Number of Loans | Loans	19	19
Loan Balance	$ 17,360	$ 17,303
Specific Reserve	$ 6,446	$ 5,689
Commercial, Industrial, and Agricultural [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Loans	10	10
Loan Balance	$ 5,150	$ 5,213
Specific Reserve	$ 278	$ 245
Commercial Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Loans	9	9
Loan Balance	$ 12,210	$ 12,090
Specific Reserve	$ 6,168	$ 5,444
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Loans	0	0
Loan Balance	$ 0	$ 0
Specific Reserve	$ 0	$ 0
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Loans	0	0
Loan Balance	$ 0	$ 0
Specific Reserve	$ 0	$ 0
Credit Cards [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Loans	0	0
Loan Balance	$ 0	$ 0
Specific Reserve	$ 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	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	$ 1,467,990	$ 1,349,203
Commercial, Industrial, and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	773,473	749,138
Commercial Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	694,517	600,065
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	1,417,246	1,294,733
Pass [Member] | Commercial, Industrial, and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	740,558	713,102
Pass [Member] | Commercial Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	676,688	581,631
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	12,284	21,145
Special Mention [Member] | Commercial, Industrial, and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	9,513	16,726
Special Mention [Member] | Commercial Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	2,771	4,419
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	38,460	33,325
Substandard [Member] | Commercial, Industrial, and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	23,402	19,310
Substandard [Member] | Commercial Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	15,058	14,015
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	0	0
Doubtful [Member] | Commercial, Industrial, and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	0	0
Doubtful [Member] | Commercial Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing receivable recorded investment	$ 0	$ 0

Loans - Recorded Investment in

Loans - Recorded Investment in Residential, Consumer and Credit Card Loans Based on Payment Activity (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Residential real estate	$ 725,683	$ 713,347
Credit cards	6,965	6,753
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Consumer	77,981	80,193
Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Residential real estate	720,220	707,539
Credit cards	6,928	6,709
Performing [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Consumer	77,354	79,348
Non-Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Residential real estate	5,463	5,808
Credit cards	37	44
Non-Performing [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Consumer	$ 627	$ 845

Loans - Summary of Holiday's Lo

Loans - Summary of Holiday's Loan Portfolio (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: unearned discount	$ (3,629)	$ (3,889)
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer	77,981	80,193
Holiday Financial Services Corporation [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: unearned discount	(3,629)	(3,889)
Total	18,263	19,539
Holiday Financial Services Corporation [Member] | Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Consumer	$ 21,892	$ 23,428

Deposits - Total Deposits (Deta

Deposits - Total Deposits (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Percentage Change, Checking, non-interest bearing	(3.40%)
Percentage Change, Checking, interest bearing	4.70%
Percentage Change, Savings accounts	1.60%
Percentage Change, Certificates of deposit	3.20%
Percentage change, Total	1.90%
Checking, non-interest bearing	$ 311,052	$ 321,858
Checking, interest bearing	592,075	565,399
Savings accounts	930,108	915,587
Certificates of deposit	376,820	364,971
Total deposits	$ 2,210,055	$ 2,167,815

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Dilutive effects of assumed exercises of stock options	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
	Mar. 31, 2018	Mar. 31, 2017
Basic earnings per common share computation:
Net income per consolidated statements of income	$ 7,097	$ 6,480
Net earnings allocated to participating securities	(34)	(39)
Net earnings allocated to common stock	$ 7,063	$ 6,441
Weighted average common shares outstanding, including shares considered participating securities	15,273	14,979
Less: Average participating securities	(72)	(86)
Weighted average shares	15,201	14,893
Basic earnings per common share	$ 0.46	$ 0.43
Diluted earnings per common share computation:
Net earnings allocated to common stock	$ 7,063	$ 6,441
Weighted average common shares outstanding for basic earnings per common share	15,201	14,893
Add: Dilutive effects of assumed exercises of stock options	0	0
Weighted average shares and dilutive potential common shares	15,201	14,893
Diluted earnings per common share	$ 0.46	$ 0.43
Distributed Earnings Allocated to Common Stock [Member]
Basic earnings per common share computation:
Net earnings allocated to common stock	$ 2,509	$ 2,508
Undistributed Earnings Allocated to Common Stock [Member]
Basic earnings per common share computation:
Net earnings allocated to common stock	$ 4,554	$ 3,933

Derivative Instruments - Additi

Derivative Instruments - Additional Information (Detail) - USD ($)	May 03, 2011	Mar. 31, 2018	Dec. 31, 2017
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Term of interest rate swap agreement executed	5 years
Interest rate swap inception date	May 3, 2011
Value of subordinated note hedged	$ 10,000,000
Interest rate swap effective date	Sep. 15, 2013
Interest rate		The interest rate swap involves 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.
Derivatives designated as fair value hedges		$ 0	$ 0
Accumulated other comprehensive loss estimated		217,000
Collateral amount for counterparty interest rate swap		$ 1,400,000	1,400,000
LIBOR Plus 155 Basis Points [Member]
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Variable rate on the subordinated debt on effective date in case of interest rate swap		LIBOR plus 155 basis points
Variable interest rate on subordinate debt		3.43%
4.02% Fixed Rate Plus 155 Basis Points [Member]
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Variable rate on the subordinated debt on effective date in case of interest rate swap		4.02% fixed rate plus 155 basis points
Interest rate being paid by the corporation		5.57%
Interest Rate Swaps [Member]
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Derivative basis spread on variable rate		1.55%
Derivative fixed interest rate rate basis		4.02%
Cash collateral pledged		$ 750,000	$ 750,000

Derivative Instruments - Amount

Derivative Instruments - Amounts and Locations of Activity Related to Interest Rate Swaps Designated as Cash Flow Hedges within Corporation's Consolidated Balance Sheet and Statement of Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Derivative [Line Items]
Interest rate contracts	$ 62	$ 55
Accrued Interest and Other Liabilities [Member]
Derivative [Line Items]
Interest rate contract, fair value	(83)		$ (161)
Interest Expense - Subordinated Debentures [Member]
Derivative [Line Items]
Interest expense, Fair Value	(58)	(76)
Other Income [Member]
Derivative [Line Items]
Other income	$ 0	$ 0

Derivative Instruments - Amou61

Derivative Instruments - Amounts and Locations of Activity Related to Back-to-Back Interest Rate Swaps within Corporation's Consolidated Balance Sheet (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
3rd Party Interest Rate Swaps [Member]
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Notional Amount	$ 11,772,000	$ 11,848,000
Weighted Average Maturity (in years)	7 years 9 months 18 days	8 years
Weighted Average Fixed Rate	4.52%	4.51%
Weighted Average Variable Rate, Description	1 month LIBOR + 2.37%	1 month LIBOR + 2.37%
Weighted Average Variable Rate	2.37%	2.37%
Fair Value	$ (146,000)	$ 149,000
Customer Interest Rate Swaps [Member]
Schedule Of Loans And Allowance For Loan By Class Individually And Collectively Evaluated For Impairment [Line Items]
Notional Amount	$ 11,772,000	$ 11,848,000
Weighted Average Maturity (in years)	7 years 9 months 18 days	8 years
Weighted Average Fixed Rate	4.52%	4.51%
Weighted Average Variable Rate, Description	1 month LIBOR + 2.37%	1 month LIBOR + 2.37%
Weighted Average Variable Rate	2.37%	2.37%
Fair Value	$ 146,000	$ (149,000)

Revenue from Contracts with C62

Revenue from Contracts with Customers - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018
Revenue from Contract with Customer [Abstract]
Percetage of primary source of revenue	93.30%

Disaggregation of Revenue Deriv

Disaggregation of Revenue Derived from Contracts with Customers (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Non-interest Income
Service charges on deposit accounts	$ 1,247	$ 1,090
Wealth and asset management fees	1,030	871
Mortgage banking	208	184
Card processing and interchange income	971	878
Net gains (losses) on sales of securities	0	1,383
Other income	1,295	1,367
Total non-interest income	$ 4,751	$ 5,773

Contingency - Additional Inform

Contingency - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 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