Tompkins Financial (TMP) 10-K 1 Mar 19 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Feb. 22, 2019	Jun. 30, 2018
Document And Entity Information
Entity Registrant Name	Tompkins Financial Corp
Entity Central Index Key	1,005,817
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Trading Symbol	TMP
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity a Well-known Seasoned Issuer	No
Entity a Voluntary Filer	No
Entity's Reporting Status Current	Yes
Entity Filer Category	Large Accelerated Filer
Emerging Growth Company	false
Entity Small Business	false
Entity Public Float			$ 1,050
Entity Common Stock, Shares Outstanding		15,316,201
Entity Shell Company	false
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2,018

CONSOLIDATED STATEMENTS OF COND

CONSOLIDATED STATEMENTS OF CONDITION - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Cash and noninterest bearing balances due from banks	$ 78,524	$ 77,688
Interest bearing balances due from banks	1,865	6,615
Cash and Cash Equivalents	80,389	84,303
Available-for-sale securities, at fair value (amortized cost of $1,363,902 at December 31, 2018 and $1,408,996 at December 31, 2017)	1,332,658	1,391,862
Held-to-maturity securities, at amortized cost (fair value of $139,377 at December 31, 2018 and $140,315 at December 31, 2017)	140,579	139,216
Equity securities, at fair value (amortized cost $1,000 at December 31, 2018 and $1,000 at December 31, 2017)	887	913
Originated loans and leases, net of unearned income and deferred costs and fees	4,568,741	4,358,543
Acquired loans	265,198	310,577
Less: Allowance for loan and lease losses	43,410	39,771
Net Loans and Leases	4,790,529	4,629,349
Federal Home Loan Bank and other stock	52,262	50,498
Bank premises and equipment, net	97,202	86,995
Corporate owned life insurance	81,928	80,106
Goodwill	92,283	92,291
Other intangible assets, net	7,628	9,263
Accrued interest and other assets	82,091	83,494
Total Assets	6,758,436	6,648,290
Interest bearing:
Checking, savings and money market	2,853,190	2,651,632
Time	637,295	748,250
Noninterest bearing	1,398,474	1,437,925
Total Deposits	4,888,959	4,837,807
Federal funds purchased and securities sold under agreements to repurchase	81,842	75,177
Other borrowings	1,076,075	1,071,742
Trust preferred debentures	16,863	16,691
Other liabilities	73,826	70,671
Total Liabilities	6,137,565	6,072,088
Tompkins Financial Corporation shareholders' equity:
Common Stock - par value $.10 per share: Authorized 25,000,000 shares; Issued: 15,348,287 at December 31, 2018; and 15,301,524 at December 31, 2017	1,535	1,530
Additional paid-in capital	366,595	364,031
Retained earnings	319,396	265,007
Accumulated other comprehensive loss	(63,165)	(51,296)
Treasury stock, at cost – 122,227 shares at December 31, 2018, and 120,805 shares at December 31, 2017	(4,902)	(4,492)
Total Tompkins Financial Corporation Shareholders’ Equity	619,459	574,780
Noncontrolling interests	1,412	1,422
Total Equity	620,871	576,202
Total Liabilities and Equity	$ 6,758,436	$ 6,648,290

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Available-for-sale securities, at amortized cost	$ 1,363,902	$ 1,408,996
Securities - held-to-maturity	139,377	140,315
Equity securities, at amortized cost	$ 1,000	$ 1,000
Common Stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common Stock, authorized (in shares)	25,000,000	25,000,000
Common Stock, issued (in shares)	15,348,287	15,301,524
Treasury stock, shares (in shares)	(122,227)	(120,805)

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
INTEREST AND DIVIDEND INCOME
Loans	$ 214,370	$ 191,410	$ 169,630
Due from banks	31	37	6
Trading securities	0
Trading securities		0	220
Available-for-sale securities	30,377
Available-for-sale securities		29,721	27,846
Held-to-maturity securities	3,437	3,475	3,603
Federal Home Loan Bank stock and Federal Reserve Bank stock	3,377	2,121	1,434
Total Interest and Dividend Income	251,592	226,764	202,739
INTEREST EXPENSE
Time certificates of deposits of $250,000 or more	1,712	1,880	1,654
Other deposits	14,883	10,253	9,059
Federal funds purchased and securities sold under agreements to repurchase	152	235	2,228
Trust preferred debentures	1,227	1,158	2,390
Other borrowings	21,818	11,934	6,772
Total Interest Expense	39,792	25,460	22,103
Net Interest Income	211,800	201,304	180,636
Provision for loan and lease losses	3,942	4,161	4,321
Net Interest Income After Provision for Loan and Lease Losses	207,858	197,143	176,315
NONINTEREST INCOME
Insurance commissions and fees	29,369	28,778	29,492
Investment services income	17,288	15,665	15,203
Service charges on deposit accounts	8,435	8,437	8,793
Card services income	9,693	9,100	8,058
Mark-to-market loss on trading securities	0	0	(182)
Mark-to-market gain on liabilities held at fair value	0	0	227
Other income	13,130	7,631	6,291
Net (loss) gain on securities transactions	(466)
Net (loss) gain on securities transactions		(407)	926
Total Noninterest Income	77,449	69,204	68,808
NONINTEREST EXPENSES
Salaries and wages	85,625	81,948	77,379
Other employee benefits	22,090	21,458	19,909
Net occupancy expense of premises	13,309	13,214	12,521
Furniture and fixture expense	7,351	7,028	6,450
FDIC insurance	2,618	2,527	3,024
Amortization of intangible assets	1,771	1,932	2,090
Other operating expenses	48,303	42,998	37,234
Total Noninterest Expenses	181,067	171,105	158,607
Income Before Income Tax Expense	104,240	95,242	86,516
Income Tax Expense	21,805	42,620	27,045
Net Income Attributable to Noncontrolling Interests and Tompkins Financial Corporation	82,435	52,622	59,471
Less: Net income attributable to noncontrolling interests	127	128	131
Net Income Attributable to Tompkins Financial Corporation	$ 82,308	$ 52,494	$ 59,340
Basic Earnings Per Share (in dollars per share)	$ 5.39	$ 3.46	$ 3.94
Diluted Earnings Per Share (in dollars per share)	$ 5.35	$ 3.43	$ 3.91

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income attributable to noncontrolling interests and Tompkins Financial Corporation	$ 82,435	$ 52,622	$ 59,471
Available-for-sale securities:
Change in net unrealized gain/loss during the period	(10,981)	(2,681)	(4,615)
Reclassification adjustment for net realized loss (gain) on sale included in available-for-sale securities	332	244	(556)
Employee benefit plans:
Net retirement plan loss	(2,594)	(3,434)	(1,673)
Net retirement plan prior service (credit) cost	0	728	(113)
Amortization of net retirement plan actuarial gain	1,298	905	803
Amortization of net retirement plan prior service cost (credit)	11	9	46
Other comprehensive loss	(11,934)	(4,229)	(6,108)
Subtotal comprehensive income attributable to noncontrolling interests and Tompkins Financial Corporation	70,501	48,393	53,363
Less: Total comprehensive income attributable to noncontrolling interests	(127)	(128)	(131)
Total comprehensive income attributable to Tompkins Financial Corporation	$ 70,374	$ 48,265	$ 53,232

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
OPERATING ACTIVITIES
Net income attributable to Tompkins Financial Corporation	$ 82,308	$ 52,494	$ 59,340
Adjustments to reconcile net income, attributable to Tompkins Financial Corporation, to net cash provided by operating activities:
Provision for loan and lease losses	3,942	4,161	4,321
Depreciation and amortization of premises, equipment, and software	9,554	8,269	6,829
Accretion related to purchase accounting	(1,948)	(2,978)	(3,324)
Amortization of intangible assets	1,771	1,932	2,090
Earnings from corporate owned life insurance, net	(1,818)	(2,196)	(2,106)
Net amortization on securities	8,816	10,483	11,623
Mark-to-market loss on trading securities	0	0	182
Mark-to-market loss on liabilities held at fair value	0	0	(227)
Deferred income tax expense	2,354	14,598	1,859
Net loss (gain) on sale of securities transactions	466	407	(926)
Net gain on sale of loans	(458)	(50)	(95)
Proceeds from sale of loans	28,195	4,601	4,001
Loans originated for sale	(30,151)	(4,831)	(3,360)
Net (gain) loss on sale of bank premises and equipment	(2,946)	(30)	7
Net excess tax benefit from stock based compensation	680	1,635	1,433
Stock-based compensation expense	3,477	2,956	2,270
Decrease in interest receivable	(800)	(2,731)	(957)
Increase (decrease) in accrued interest payable	355	152	(71)
Proceeds from maturities, calls and principal paydowns of trading securities	0	0	5,781
Proceeds from sales of trading securities	0	0	1,397
Contribution to pension plan	0	(1,750)	(1,300)
Other, net	3,468	(1,057)	2,093
Net Cash Provided by Operating Activities	107,265	86,065	90,860
INVESTING ACTIVITIES
Proceeds from maturities, calls and principal paydowns of available-for-sale securities	151,053	166,625	244,456
Proceeds from sales of available-for-sale securities	70,652
Proceeds from sales of available-for-sale securities		64,106	97,296
Proceeds from maturities, calls and principal paydowns of held-to-maturity securities	6,729	8,068	11,776
Purchases of available-for-sale securities	(185,467)
Purchases of available-for-sale securities		(208,502)	(404,528)
Purchases of held-to-maturity securities	(8,492)	(5,556)	(8,207)
Net increase in loans and leases	(161,760)	(411,770)	(485,067)
Net increase in Federal Home Loan Bank stock	(1,764)	(7,365)	(13,164)
Proceeds from sale of bank premises and equipment	3,317	157	100
Purchases of bank premises, equipment and software	(18,084)	(35,290)	(16,274)
Other, net	216	2,576	119
Net Cash Used in Investing Activities	(143,600)	(426,951)	(573,493)
FINANCING ACTIVITIES
Net increase in demand, money market, and savings deposits	162,107	335,207	214,178
Net (decrease) increase in time deposits	(109,732)	(121,459)	16,946
Net increase (decrease) in securities sold under agreements to repurchase and Federal funds purchased	6,665	6,115	(67,279)
Increase in other borrowings	524,492	750,918	761,001
Redemption of trust preferred debentures	0	(21,161)	0
Repayment of other borrowings	(520,159)	(563,991)	(412,245)
Net shares issued related to restricted stock awards	(1,403)	(1,294)	(835)
Cash dividends	(29,634)	(27,627)	(26,603)
Repurchase of common stock	(2,448)	0	(1,166)
Shares issued for dividend reinvestment plan	0	2,872	3,201
Shares issued for employee stock ownership plan	3,073	2,296	1,938
Net proceeds from exercise of stock options	(540)	(641)	(806)
Net Cash Provided by Financing Activities	32,421	361,235	488,330
Net (Decrease) Increase Cash and Cash Equivalents	(3,914)	20,349	5,697
Cash and cash equivalents at beginning of year	84,303	63,954	58,257
Total Cash & Cash Equivalents at End of Year	80,389	84,303	63,954
Supplemental Cash Flow Information
Cash paid during the year for - Interest	40,660	26,387	23,465
Cash paid, net of refunds, during the year for - Income taxes	16,949	31,011	24,665
Non-cash investing and financing activities:
Transfer of loans to other real estate owned	$ 518	$ 2,886	$ 1,179

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Treasury Stock	Non- controlling Interests
Balances at beginning at Dec. 31, 2015	$ 516,466	$ 1,502	$ 350,823	$ 197,445	$ (31,001)	$ (3,755)	$ 1,452
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to noncontrolling interests and Tompkins Financial Corporation	59,471			59,340			131
Other comprehensive loss	(6,108)				(6,108)
Subtotal comprehensive income attributable to noncontrolling interests and Tompkins Financial Corporation	53,363
Cash dividends	(26,603)			(26,603)
Net exercise of stock options	(806)	4	(810)
Common stock repurchased and returned to unissued status	(1,166)	(2)	(1,164)
Stock-based compensation expense	2,270		2,270
Shares issued for dividend reinvestment plan	3,201	4	3,197
Shares issued for employee stock ownership plan	1,938	3	1,935
Directors deferred compensation plan	0		296			(296)
Restricted stock activity	(835)	3	(838)
Shares issued for purchase acquisition	1,708	3	1,705
Dividend to noncontrolling interests	(131)						(131)
Balances at ending at Dec. 31, 2016	549,405	1,517	357,414	230,182	(37,109)	(4,051)	1,452
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to noncontrolling interests and Tompkins Financial Corporation	52,622			52,494			128
Reclassification due to the adoption of ASU No. 2018-02	0			9,958	(9,958)
Other comprehensive loss	(4,229)				(4,229)
Subtotal comprehensive income attributable to noncontrolling interests and Tompkins Financial Corporation	48,393
Cash dividends	(27,627)			(27,627)
Net exercise of stock options	(641)	2	(643)
Stock-based compensation expense	2,956		2,956
Shares issued for dividend reinvestment plan	2,872	4	2,868
Shares issued for employee stock ownership plan	2,296	3	2,293
Directors deferred compensation plan	0		441			(441)
Restricted stock activity	(1,294)	4	(1,298)
Partial repurchase of noncontrolling interest	(30)						(30)
Dividend to noncontrolling interests	(128)						(128)
Balances at ending at Dec. 31, 2017	576,202	1,530	364,031	265,007	(51,296)	(4,492)	1,422
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to noncontrolling interests and Tompkins Financial Corporation	82,435			82,308			127
Other comprehensive loss	(11,934)				(11,934)
Subtotal comprehensive income attributable to noncontrolling interests and Tompkins Financial Corporation	70,501
Cash dividends	(29,634)
Cash dividends | Accounting Standards Update 2016-01				(29,634)
Net exercise of stock options	(540)	1	(541)
Common stock repurchased and returned to unissued status	(2,448)	(3)	(2,445)
Stock-based compensation expense	3,477		3,477
Shares issued for employee stock ownership plan	3,073	4	3,069
Directors deferred compensation plan	0	0	410			(410)
Restricted stock activity	(1,403)	3	(1,406)
Partial repurchase of noncontrolling interest	(10)						(10)
Dividend to noncontrolling interests	(127)						(127)
Balances at ending at Dec. 31, 2018	$ 620,871	$ 1,535	$ 366,595	$ 319,396	(63,165)	$ (4,902)	$ 1,412
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of ASU | Accounting Standards Update 2016-01					$ 65

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Stockholders' Equity [Abstract]
Cash dividends (in dollars per share)	$ 1.94	$ 1.82	$ 1.77
Net exercise of stock options and related tax benefit (in shares)	10,786	22,277	39,931
Common stock repurchased and returned to unissued status (in shares)			22,356
Shares issued for dividend reinvestment plan (in shares)		34,750	45,148
Shares issued for employee stock ownership plan (in shares)	38,883	27,412	31,435
Directors deferred compensation plan (in shares)	1,422	2,808	1,871
Restricted stock activity (in shares)	29,577	45,269	29,511
Shares issued for purchase acquisition (in shares)			32,553

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis Of Presentation Tompkins Financial Corporation (“Tompkins” or “the Company”) is a registered Financial Holding Company with the Federal Reserve Board pursuant to the Bank Holding Company Act of 1956, as amended, organized under the laws of New York State, and is the parent company of Tompkins Trust Company (the “Trust Company”), The Bank of Castile, Mahopac Bank, VIST Bank, and Tompkins Insurance Agencies, Inc. (“Tompkins Insurance”). The Trust Company provides a full array of trust and investment services under the Tompkins Financial Advisors brand. Unless the context otherwise requires, the term “Company” refers to Tompkins Financial Corporation and its subsidiaries. The consolidated financial information included herein combines the results of operations, the assets, liabilities, and shareholders’ equity (including comprehensive income or loss) of the Company and all entities in which the Company has a controlling financial interest. All significant intercompany balances and transactions are eliminated in consolidation. The Company determines whether it has a controlling financial interest in an entity by first evaluating whether the entity is a voting interest entity or a variable interest entity under U.S. accounting principles generally accepted. Voting interest entities are entities in which the total equity investment at risk is sufficient to enable the entity to finance itself independently and provides the equity holders with the obligation to absorb losses, the right to receive residual returns and the right to make decisions about the entity’s activities. The Company consolidates voting interest entities in which it has all, or at least a majority of, the voting interest. As defined in applicable accounting standards, variable interest entities (VIEs) are entities that lack one or more of the characteristics of a voting interest entity. A controlling financial interest in a VIE is present when the Company has both the power and ability to direct the activities of the VIE that most significantly impact the VIE’s economic performance and an obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. The Company’s wholly owned subsidiaries, Sleepy Hollow Capital Trust I, Leesport Capital Trust II, and Madison Statutory Trust I are VIE’s for which the Company is not the primary beneficiary. Accordingly, the accounts of these entities are not included in the Company’s consolidated financial statements. The consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles. In preparing the financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclose contingent assets and liabilities, at the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include the allowance for loan and lease losses, valuation of goodwill and intangible assets, deferred income tax assets, other-than-temporary impairment on investments, and obligations related to employee benefits. Amounts in the prior years’ consolidated financial statements are reclassified when necessary to conform to the current year’s presentation. The consolidated financial information included herein combines the results of operations, the assets, liabilities, and shareholders’ equity of the Company and its subsidiaries. Amounts in the prior periods’ unaudited condensed consolidated financial statements are reclassified when necessary to conform to the current periods’ presentation. The Company has evaluated subsequent events for potential recognition and/or disclosure and determined that no further disclosures were required. Cash and Cash Equivalents Cash and cash equivalents in the Consolidated Statements of Cash Flows include cash and noninterest bearing balances due from banks, interest-bearing balances due from banks, Federal funds sold, and money market funds. Management regularly evaluates the credit risk associated with the counterparties to these transactions and believes that the Company is not exposed to any significant credit risk on cash and cash equivalents. Each bank subsidiary is required to maintain reserve balances by the Federal Reserve Bank of New York. At December 31, 2018 , and December 31, 2017 , the reserve requirements for the Company’s banking subsidiaries totaled $6.6 million and $6.6 million , respectively. Securities Management determines the appropriate classification of debt and equity securities at the time of purchase. Securities are classified as held-to-maturity when the Company has the positive intent and ability to hold the securities to maturity. Held-to-maturity securities are stated at amortized cost. Debt securities not classified as held-to-maturity and marketable equity securities are classified as either available-for-sale or trading. Available-for-sale securities are stated at fair value with the unrealized gains and losses, net of tax, excluded from earnings and reported as a separate component of accumulated comprehensive income or loss, in shareholders’ equity. Trading securities are stated at fair value, with unrealized gains or losses included in earnings. Beginning January 1, 2018, upon adoption of ASU 2016-01, equity securities with readily determinable fair values are stated at fair value with realized and unrealized gains and losses reported in income. For periods prior to January 1, 2018, equity securities were classified as available-for-sale and stated at fair value with unrealized gains and losses reported as a separate component of accumulated other comprehensive income, net of tax. Securities with limited marketability or restricted equity securities, such as Federal Home Loan Bank stock and Federal Reserve Bank stock, are carried at cost, less any impairment, if any. Premiums and discounts are amortized or accreted over the expected life of the related security as an adjustment to yield using the interest method. Dividend and interest income are recognized when earned. Realized gains and losses on the sale of securities are included in net gain (loss) on securities transactions. The cost of securities sold is based on the specific identification method. At least quarterly, the Company performs an assessment to determine whether there have been any events or economic circumstances indicating that a security with an unrealized loss has suffered other-than-temporary impairment. A debt security is considered impaired if the fair value is less than its amortized cost basis at the reporting date. If impaired, the Company then assesses whether the unrealized loss is other-than-temporary. An unrealized loss on a debt security is generally deemed to be other-than-temporary and a credit loss is deemed to exist if the present value, discounted at the security’s effective rate, of the expected future cash flows is less than the amortized cost basis of the debt security. As a result, the credit loss component of an other-than-temporary impairment write-down for debt securities is recorded in earnings while the remaining portion of the impairment loss is recognized, net of tax, in other comprehensive income provided that the Company does not intend to sell the underlying debt security and it is more-likely-than not that the Company would not have to sell the debt security prior to recovery of the unrealized loss, which may be to maturity. If the Company intended to sell any securities with an unrealized loss or it is more-likely-than not that the Company would be required to sell the investment securities, before recovery of their amortized cost basis, then the entire unrealized loss would be recorded in earnings. Loans and Leases Loans are reported at their principal outstanding balance, net of deferred loan origination fees and costs, and unearned income. The Company has the ability and intent to hold its loans for the foreseeable future, except for certain residential real estate loans held-for-sale. The Company provides motor vehicle and equipment financing to its customers through direct financing leases. These leases are carried at the aggregate of lease payments receivable, plus estimated residual values, less unearned income. Unearned income on direct financing leases is amortized over the lease terms, resulting in a level rate of return. Residential real estate loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or estimated fair value. Fair value is determined on the basis of the rates quoted in the secondary market. Net unrealized losses attributable to changes in market interest rates are recognized through a valuation allowance by charges to income. Loans are generally sold on a non-recourse basis with servicing retained. Any gain or loss on the sale of loans is recognized at the time of sale as the difference between the recorded basis in the loan and the net proceeds from the sale. The Company may use commitments at the time loans are originated or identified for sale to mitigate interest rate risk. The commitments to sell loans and the commitments to originate loans held-for-sale at a set interest rate, if originated, are considered derivatives under ASC Topic 815. The impact of the estimated fair value adjustment was not significant to the consolidated financial statements. Interest income on loans is accrued and credited to income based upon the principal amount outstanding. Loan origination fees and costs are deferred and recognized over the life of the loan as an adjustment to yield. Loans are considered past due if the required principal and interest payments have not been received as of the date such payments are due. Loans and leases, including impaired loans, are generally classified as nonaccrual if they are past due as to maturity or payment of principal or interest for a period of more than 90 days, unless such loans are well secured and in the process of collection. Loans that are past due less than 90 days may also be classified as nonaccrual if repayment in full of principal or interest is in doubt. Loans may be returned to accrual status when all principal and interest amounts contractually due (including arrearages) are reasonably assured of repayment within an acceptable time period, and there is a sustained period (generally six consecutive months) of repayment performance by the borrower in accordance with the contractual terms of the loan agreement. When interest accrual is discontinued, all unpaid accrued interest is reversed. Payments received on loans on nonaccrual are generally applied to reduce the principal balance of the loan. The Company applies the provisions of ASC Topic 310-10-35, Loan Impairment , to all impaired commercial and commercial real estate loans over $250,000 and to all loans restructured in a troubled debt restructuring. Allowances for loan losses for the remaining loans are recognized in accordance with ASC Topic 450, Contingencies (“ASC Topic 450”). Management considers a loan to be impaired if, based on current information, it is probable that the Company will be unable to collect all scheduled payments of principal or interest when due, according to the contractual terms of the loan agreement. When a loan is considered to be impaired, the amount of the impairment is measured based on the present value of expected future cash flows discounted at the effective interest rate of the loan or, as a practical expedient, at the observable market price or the fair value of collateral (less costs to sell) if the loan is collateral dependent. Management excludes large groups of smaller balance homogeneous loans such as residential mortgages, consumer loans, and leases, which are collectively evaluated. Loans are considered modified in a troubled debt restructuring (“TDR”) when, due to a borrower’s financial difficulties, the Company makes a concession(s) to the borrower that it would not otherwise consider. These modifications may include, among others, an extension for the term of the loan, and granting a period when interest-only payments can be made with the principal payments and interest caught up over the remaining term of the loan or at maturity. Generally, a nonaccrual loan that has been modified in a TDR remains on non-accrual status for a period of six months to demonstrate that the borrower is able to meet the terms of the modified loan. However, performance prior to the modification, or significant events that coincide with the modification, are included in assessing whether the borrower can meet the new terms and may result in the loan being returned to accrual status at the time of loan modification or after a shorter performance period. If the borrower’s ability to meet the revised payment schedule is uncertain, the loan remains on nonaccrual status. In general, the principal balance of a loan is charged off in full or in part when management concludes, based on the available facts and circumstances, that collection of principal in full is not probable. For commercial and commercial real estate loans, this conclusion is generally based upon a review of the borrower’s financial condition and cash flow, payment history, economic conditions, and the conditions in the various markets in which the collateral, if any, may be liquidated. In general, consumer loans are charged-off in accordance with regulatory guidelines which provide that such loans be charged-off when the Company becomes aware of the loss, such as from a triggering event that may include new information about a borrower’s intent/ability to repay the loan, bankruptcy, fraud or death, among other things, but in no case will the charge-off exceed specified delinquency timeframes. Such delinquency timeframes state that closed-end retail loans (loans with pre-defined maturity dates, such as real estate mortgages, home equity loans and consumer installment loans) that become past due 120 cumulative days and open-end retail loans (loans that roll-over at the end of each term, such as home equity lines of credit) that become past due 180 cumulative days should be classified as a loss and charged-off. For residential real estate loans, charge-off decisions are based upon past due status, current assessment of collateral value, and general market conditions in the areas where the properties are located. Acquired Loans and Leases Loans acquired in acquisitions, subsequent to the effective date of ASC Topic 805, Business Combination, are recorded at fair value and subsequently accounted for in accordance with ASC Topic 310, and there is no carryover of the related allowance for loan and lease losses. Loans acquired with evidence of credit impairment are accounted for under ASC Subtopic 310-30. These loans may be aggregated and accounted for as pools of loans if the loans being aggregated have common risk characteristics. In the VIST acquisition, the Company elected to account for the loans with evidence of credit deterioration individually rather than aggregate them into pools. The difference between the undiscounted cash flows expected at acquisition and the investment in the acquired loans, or the “accretable yield,” is recognized as interest income utilizing the level-yield method over the life of each loan. Contractually required payments for interest and principal that exceed the undiscounted cash flows expected at acquisition, or the “non-accretable difference,” are not recognized as a yield adjustment, as a loss accrual or as a valuation allowance. Increases in expected cash flows subsequent to the acquisition are recognized prospectively through an adjustment of the yield on the loans over the remaining life, while decreases in expected cash flows are recognized as impairment through a loss provision and an increase in the allowance for loan losses. Valuation allowances (recognized in the allowance for loan losses) on these impaired loans reflect only losses incurred after the acquisition (representing all cash flows that were expected at acquisition but currently are not expected to be received). Acquired loans not exhibiting evidence of credit impairment at the time of acquisition are accounted for under ASC Subtopic 310-20. The Company amortizes/accretes into interest income the premium/discount determined at the date of purchase over the life of the loan on a level yield basis. Subsequent to the acquisition date, the methods used to estimate the appropriate allowance for loan losses are similar to originated loans. These loans are placed on nonaccrual status in accordance with the Company’s policy for originated loans. Acquired loans that met the criteria for nonaccrual of interest prior to the acquisition may be considered performing upon acquisition, regardless of whether the customer is contractually delinquent, if we can reasonably estimate the timing and amount of the expected cash flows on such loans and if the Company expects to fully collect the new carrying value of the loans. As such, we may no longer consider the loan to be nonaccrual or nonperforming and may accrue interest on these loans, including the impact of any accretable discount. The Company determined at acquisition that it could reasonably estimate future cash flows on acquired loans that were past due 90 days or more and on which the Company expects to fully collect the carrying value of the loans net of the allowance for acquired loan losses. As such, the Company does not consider these loans to be nonaccrual or nonperforming. Allowance For Loan and Lease Losses The Company has developed a methodology to measure the amount of estimated loan loss exposure inherent in the loan portfolio to assure that an appropriate allowance is maintained. The Company’s methodology is based upon guidance provided in SEC Staff Accounting Bulletin No. 102, Selected Loan Loss Allowance Methodology and Documentation Issues and allowance allocations are calculated in accordance with ASC Topic 310, Receivables and ASC Topic 450, Contingencies . The model is comprised of four major components that management has deemed appropriate in evaluating the appropriateness of the allowance for loan and lease losses. While none of these components, when used independently, is effective in arriving at a reserve level that appropriately measures the risk inherent in the portfolio, management believes that using them collectively, provides reasonable measurement of the loss exposure in the portfolio. The components include: impaired loans; criticized and classified credits; historical loss experience; and qualitative or subjective analysis. For impaired loans, an allowance is recognized if the fair value of the loan is less than the recorded investment in the loan (recorded investment in the loan is the principal balance plus any accrued interest, net of deferred loan fees or costs and unamortized premium or discount). A loan’s fair value reflects the present value of expected future cash flows discounted at the loan’s effective interest rate, or if the loan is collateral dependent, the fair value of the collateral, less estimated disposal costs. If the loan is collateral dependent, the principal balance of the loan is charged-off in an amount equal to the impairment measurement. The fair value of collateral dependent loans is derived primarily from collateral appraisals performed by independent third-party appraisers. For loans that are not impaired, but are rated special mention or worse, management evaluates credits based on elevated risk characteristics and assigns reserves based upon analysis of historical loss experience of loans with similar risk characteristics. For loans that are not impaired or reviewed individually, management assigns a reserve based upon historical loss experience over a designated look-back period. Management has evaluated a variety of look-back periods and has determined that an eight year look back period is appropriate to capture a full range of economic cycles. Management has also evaluated a variety of statistical methods in analyzing loss history, including averages, weighted averages and loss emergence periods and has determined that by applying a loss emergence period analysis to historical losses over a full economic cycle has resulted in a reasonable estimate of losses inherent in the loan portfolio. The model also includes an analysis of a variety of subjective factors to support the reserve estimate. These subjective factors may include allowance allocations for risks that may not otherwise be fully recognized in other components of the model. Among the subjective factors that are routinely considered as part of this analysis are: growth trends in the portfolio, changes in management and/or polices related to lending activities, trends in classified or nonaccrual loans, concentrations of credit, local and national economic trends, and industry trends. Periodically, management conducts an analysis to estimate the loss emergence period for various loan categories based on samples of historical charge-offs. Model output by loan category is reviewed to evaluate the reasonableness of the reserve levels in comparison to the estimated loss emergence period applied to historical loss experience. In addition to the components discussed above, management reviews the model output for reasonableness by analyzing the results in comparisons to recent trends in the loan/lease portfolio, through back-testing of results from prior models in comparison to actual loss history, and by comparing our reserves and loss history to industry peer results. The model results are reviewed by management at the Corporate Credit Policy Committee and presented to the Board of Directors. Additionally, on an annual basis, management conducts a validation process of the model. This validation includes reviewing the appropriateness of model calculations, back testing of model results and appropriateness of key assumptions used in the model. In addition, various Federal and State regulatory agencies, as part of their examination process, review the Company’s allowance and may require the Company to recognize additions to the allowance based on their judgments about information available to them at the time of their examination. For acquired credit impaired loans accounted for under FASB ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality, (“ASC Topic 310-30”), the Company’s allowance for loan and lease losses is estimated based upon our expected cash flows for these loans. To the extent that we experience a deterioration in borrower credit quality resulting in a decrease in our expected cash flows subsequent to the acquisition of the loans, an allowance for loan losses would be established based on our estimate of future credit losses over the remaining life of the loans. For acquired non-credit impaired loans accounted for under FASB ASC Topic 310-20, Nonrefundable Fees and Other Costs , (“ASC Topic 310-20”), the Company’s allowance for loan and lease losses is maintained through provisions for loan losses based upon an evaluation process that is similar to our evaluation process used for originated loans. This evaluation, which includes a review of loans on which full collectability may not be reasonably assured, considers, among other matters, the estimated fair value of the underlying collateral, economic conditions, historical net loan loss experience, carrying value of the loans, which includes the remaining net purchase discount or premium, and other factors that warrant recognition in determining our allowance for loan losses. Additionally, in June 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ("ASU 2016-13") , which replaces the current "incurred loss" model for recognizing credit losses with an "expected loss" model referred to as the Current Expected Credit Loss ("CECL") model. ASU 2016-13 will become effective for the Company for fiscal years beginning after December 15, 2019 and for interim periods within those fiscal years. Under the CECL model, we will be required to present certain financial assets carried at amortized cost at the net amount expected to be collected. Accordingly, the Company’s management anticipates that this significant accounting rule adjustment will materially affect how we determine our allowance for loan and lease losses as well as our accounting for investment securities. Premises and Equipment Land is carried at cost. Premises and equipment are stated at cost, less allowances for depreciation. The provision for depreciation for financial reporting purposes is computed generally by the straight-line method at rates sufficient to write-off the cost of such assets over their estimated useful lives. Buildings are amortized over a period of 10 - 39 years, and furniture, fixtures, and equipment are amortized over a period of 2 - 20 years. Leasehold improvements are generally depreciated over the lesser of the lease term or the estimated lives of the improvements. Maintenance and repairs are charged to expense as incurred. Gains or losses on disposition are reflected in earnings. Other Real Estate Owned Other real estate owned consists of properties formerly pledged as collateral to loans, which have been acquired by the Company through foreclosure proceedings or acceptance of a deed in lieu of foreclosure. Upon transfer of a loan to foreclosure status, an appraisal is generally obtained and any excess of the loan balance over the fair value, less estimated costs to sell, is charged against the allowance for loan/lease losses. Expenses and subsequent adjustments to the fair value are treated as other operating expense. Goodwill Goodwill represents the excess of purchase price over the fair value of assets acquired in a transaction using purchase accounting. Goodwill has an indefinite useful life and is not amortized, but is tested for impairment. Goodwill impairment tests are performed on an annual basis or when events or circumstances dictate. The Company tests goodwill annually as of December 31 st . The Company has the option to perform a qualitative assessment of goodwill, which considers company-specific and economic characteristics that might impact its carrying value. If based on this qualitative assessment, it is more likely than not that the fair value of the reporting unit is less than its carrying amount, then a quantitative test (Step 1) is performed, which compares the fair value of the reporting unit to the carrying amount of the reporting unit in order to identify potential impairment. If the estimated fair value of a reporting unit exceeds its carrying amount, the goodwill of the reporting unit is not considered impaired. However, if the carrying amount of the reporting unit were to exceed its estimated fair value, a second step (Step 2) would be performed that would compare the implied fair value of the reporting unit’s goodwill with the carrying amount of the goodwill for the reporting unit. The implied fair value of goodwill is determined in the same manner as goodwill that is recognized in a business combination. Significant judgment and estimates are involved in estimating the fair value of the assets and liabilities of the reporting units. Other Intangible Assets Other intangible assets include core deposit intangibles, customer related intangibles, covenants not to compete, and mortgage servicing rights. Core deposit intangibles represent a premium paid to acquire a base of stable, low cost deposits in the acquisition of a bank, or a bank branch, using purchase accounting. The amortization period for core deposit intangible ranges from 5 to 10 years , using an accelerated method. The covenants not to compete are amortized on a straight-line basis over 3 to 6 years , while customer related intangibles are amortized on an accelerated basis over a range of 6 to 15 years . The amortization period is monitored to determine if circumstances require such periods to be revised. The Company periodically reviews its intangible assets for changes in circumstances that may indicate the carrying amount of the asset is impaired. The Company tests its intangible assets for impairment on an annual basis or more frequently if conditions indicate that an impairment loss has more likely than not been incurred. Income Taxes Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Deferred taxes are reviewed quarterly and reduced by a valuation allowance if, based upon the information available, it is more likely than not that some or all of the deferred tax assets will not be realized. Realization of deferred tax assets is dependent upon the generation of a sufficient level of future taxable income and recoverable taxes paid in prior years. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets will be realized. The Company’s policy is to recognize interest and penalties on unrecognized tax benefits in income tax expense in the Consolidated Statements of Income. Tax Credit Investments The Company accounts for its investments in qualified affordable housing projects using the proportional amortization method. Under that method, the Company amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense. As of December 31, 2018 and 2017 , the Company's remaining investment in qualified affordable housing projects, net of amortization totaled $1.0 million and $1.4 million , respectively. Securities Sold Under Agreements to Repurchase Securities sold under agreements to repurchase (repurchase agreements) are agreements in which the Company transfers the underlying securities to a third-party custodian’s account that explicitly recognizes the Company’s interest in the securities. The agreements are accounted for as secured financing transactions provided the Company maintains effective control over the transferred securities and meets other criteria as specified in FASB ASC Topic 860, Transfers and Servicing (“ASC Topic 860”). The Company’s agreements are accounted for as secured financings; accordingly, the transaction proceeds are reflected as liabilities and the securities underlying the agreements continue to be carried in the Company’s securities portfolio. Treasury Stock The cost of treasury stock is shown on the Consolidated Statements of Condition as a separate component of shareholders’ equity, and is a reduction to total shareholders’ equity. Shares are released from treasury at fair value, identified on an average cost basis. Trust and Investment Services Assets held in fiduciary or agency capacities for customers are not included in the accompanying Consolidated Statements of Condition, since such items are not assets of the Company. Fees associated with providing trust and investment services are included in noninterest income. Earnings Per Share Basic earnings per share is calculated by dividing net income available to common shareholders by the weighted average number of shares outstanding during the year, exclusive of shares represented by the unvested portion of restricted stock and restricted stock units. Diluted earnings per share is calculated by dividing net income available to common shareholders by the weighted average number of shares outstanding during the year plus the dilutive effect of the unvested portion of restricted stock and restricted stock units and stock issuable upon conversion of common stock equivalents (primarily stock options) or certain other contingencies. The Company currently uses authoritative accounting guidance under ASC

Securities

Securities	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Securities	Securities Available-for-Sale Securities The following tables summarize available-for-sale securities held by the Company at December 31, 2018 and 2017 : Available-for-Sale Securities December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) U.S. Treasuries $ 289 $ 0 $ 0 $ 289 Obligations of U.S. Government sponsored entities $ 493,371 $ 80 $ 7,553 $ 485,898 Obligations of U.S. states and political subdivisions 86,260 113 933 85,440 Mortgage-backed securities – residential, issued by U.S. Government agencies 131,831 168 3,732 128,267 U.S. Government sponsored entities 649,620 537 19,599 630,558 Non-U.S. Government agencies or sponsored entities 31 0 0 31 U.S. corporate debt securities 2,500 0 325 2,175 Total available-for-sale securities $ 1,363,902 $ 898 $ 32,142 $ 1,332,658 Available-for-Sale Securities December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) Obligations of U.S. Government sponsored entities $ 507,248 $ 278 $ 3,333 $ 504,193 Obligations of U.S. states and political subdivisions 91,659 281 421 91,519 Mortgage-backed securities – residential, issued by U.S. Government agencies 139,747 659 2,671 137,735 U.S. Government sponsored entities 667,767 1,045 12,634 656,178 Non-U.S. Government agencies or sponsored entities 75 0 0 75 U.S. corporate debt securities 2,500 0 338 2,162 Total debt securities 1,408,996 2,263 19,397 1,391,862 Equity securities 1,000 0 87 913 Total available-for-sale securities $ 1,409,996 $ 2,263 $ 19,484 $ 1,392,775 Held-to-Maturity Securities The following tables summarize held-to-maturity securities held by the Company at December 31, 2018 and 2017 : Held-to-Maturity Securities December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) Obligations of U.S. Government sponsored entities $ 131,306 $ 0 $ 1,198 $ 130,108 Obligations of U.S. states and political subdivisions 9,273 20 24 9,269 Total held-to-maturity debt securities $ 140,579 $ 20 $ 1,222 $ 139,377 Held-to-Maturity Securities Held-to-Maturity Securities December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) Obligations of U.S. Government sponsored entities $ 131,707 $ 1,103 $ 90 $ 132,720 Obligations of U.S. states and political subdivisions 7,509 93 7 7,595 Total held-to-maturity debt securities $ 139,216 $ 1,196 $ 97 $ 140,315 The following table sets forth information with regard to sales transactions of securities available-for-sale: Year ended December 31, (in thousands) 2018 2017 2016 Proceeds from sales $ 70,652 $ 64,106 $ 97,296 Gross realized gains 327 19 894 Gross realized losses (767 ) (426 ) 0 Net (losses) gains on sales of available-for-sale securities $ (440 ) $ (407 ) $ 894 There were no sales of held-to-maturity securities in 2018 , 2017 , and 2016 . The Company also recognized losses of $26,000 on equity securities for the twelve months ended December 31, 2018, reflecting the change in fair value. The following table summarizes available-for-sale securities that had unrealized losses at December 31, 2018 : December 31, 2018 Available-for-Sale Securities Less than 12 Months 12 Months or Longer Total (in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Obligations of U.S. Government sponsored entities $ 21,660 $ 183 $ 449,141 $ 7,370 $ 470,801 $ 7,553 Obligations of U.S. states and political subdivisions 11,971 19 49,756 914 61,727 933 Mortgage-backed securities – residential, issued by U.S. Government agencies 16,854 22 96,247 3,710 113,101 3,732 U.S. Government sponsored entities 61,163 662 512,216 18,937 573,379 19,599 U.S. corporate debt securities 0 0 2,175 325 2,175 325 Total available-for-sale securities $ 111,648 $ 886 $ 1,109,535 $ 31,256 $ 1,221,183 $ 32,142 The following table summarizes held-to-maturity securities that had unrealized losses at December 31, 2018 : Held-to-Maturity Securities Less than 12 Months 12 Months or Longer Total (in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Obligations of U.S. Government sponsored entities $ 4,980 $ 9 $ 125,128 $ 1,189 $ 130,108 $ 1,198 Obligations of U.S. sponsored entities 8,127 24 0 0 8,127 24 Total held-to-maturity securities $ 13,107 $ 33 $ 125,128 $ 1,189 $ 138,235 $ 1,222 The following table summarizes available-for-sale securities that had unrealized losses at December 31, 2017 : December 31, 2017 Available-for-Sale Securities Less than 12 Months 12 Months or Longer Total (in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Obligations of U.S. Government sponsored entities $ 319,545 $ 2,301 $ 39,791 $ 1,032 $ 359,336 $ 3,333 Obligations of U.S. states and political subdivisions 39,571 219 11,729 202 51,300 421 Mortgage-backed securities – residential, issued by U.S. Government agencies 33,056 452 86,562 2,219 119,618 2,671 U.S. Government sponsored entities 208,524 1,941 410,767 10,693 619,291 12,634 U.S. corporate debt securities 0 0 2,163 338 2,163 338 Equity securities 0 0 913 87 913 87 Total available-for-sale securities $ 600,696 $ 4,913 $ 551,925 $ 14,571 $ 1,152,621 $ 19,484 The following table summarizes held-to-maturity securities that had unrealized losses at December 31, 2017 : Held-to-Maturity Securities Less than 12 Months 12 Months or Longer Total (in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Obligations of U.S. Government sponsored entities $ 20,505 $ 90 $ 0 $ 0 $ 20,505 $ 90 Obligations of U.S. sponsored entities 5,094 7 0 0 5,094 7 Total held-to-maturity securities $ 25,599 $ 97 $ 0 $ 0 $ 25,599 $ 97 The gross unrealized losses reported for residential mortgage-backed securities relate to investment securities issued by U.S. government sponsored entities such as Federal National Mortgage Association and Federal Home Loan Mortgage Corporation, and U.S. government agencies such as Government National Mortgage Association. The total gross unrealized losses, shown in the tables above, were primarily attributable to changes in interest rates and levels of market liquidity, relative to when the investment securities were purchased, and not due to the credit quality of the investment securities. The Company does not intend to sell the investment securities that are in an unrealized loss position until recovery of unrealized losses (which may be until maturity), and it is not more-likely-than not that the Company will be required to sell the investment securities before recovery of their amortized cost basis, which may be at maturity. Accordingly, as of December 31, 2018 , and December 31, 2017 , management believes the unrealized losses detailed in the tables above are not other-than-temporary. The Company did no t recognize any net credit impairment charge to earnings on investment securities in 2018 or 2017 . The amortized cost and estimated fair value of debt securities by contractual maturity are shown in the following table. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Mortgage-backed securities are shown separately since they are not due at a single maturity date. December 31, 2018 (in thousands) Amortized Cost Fair Value Available-for-sale securities: Due in one year or less $ 78,160 $ 77,930 Due after one year through five years 355,499 350,470 Due after five years through ten years 139,560 136,734 Due after ten years 9,201 8,668 Total 582,420 573,802 Mortgage-backed securities 781,482 758,856 Total available-for-sale debt securities $ 1,363,902 $ 1,332,658 December 31, 2017 (in thousands) Amortized Cost Fair Value Available-for-sale securities: Due in one year or less $ 51,909 $ 51,932 Due after one year through five years 368,846 367,377 Due after five years through ten years 162,061 160,374 Due after ten years 18,591 18,191 Total 601,407 597,874 Mortgage-backed securities 807,589 793,988 Total available-for-sale debt securities $ 1,408,996 $ 1,391,862 December 31, 2018 (in thousands) Amortized Cost Fair Value Held-to-maturity securities: Due in one year or less $ 8,850 $ 8,832 Due after one year through five years 86,520 85,645 Due after five years through ten years 45,209 44,900 Due after ten years 0 0 Total held-to-maturity debt securities $ 140,579 $ 139,377 December 31, 2017 (in thousands) Amortized Cost Fair Value Held-to-maturity securities: Due in one year or less $ 5,980 $ 5,979 Due after one year through five years 51,936 52,227 Due after five years through ten years 81,300 82,109 Due after ten years 0 0 Total held-to-maturity debt securities $ 139,216 $ 140,315 Trading Securities The Company had no securities designated as trading during 2018 or at year-end 2017. Pledged Securities The Company pledges securities as collateral for public deposits and other borrowings, and sells securities under agreements to repurchase. See “Note 8 - Securities Sold Under Agreements to Repurchase and Federal Funds Purchased” for further discussion. Securities carried of $1.2 billion and $1.3 billion , at December 31, 2018 and 2017 , respectively, were either pledged or sold under agreements to repurchase. Concentrations of Securities Except for U.S. government securities, there were no holdings, when taken in the aggregate, of any single issuer that exceeded 10% of shareholders’ equity at December 31, 2018 . Investment in Small Business Investment Companies The Company has equity investments in small business investment companies (“SBIC”) established for the purpose of providing financing to small businesses in market areas served by the Company. These investments totaled $1.4 million at December 31, 2018 , and $1.7 million at December 31, 2017 , and were included in other assets on the Company’s Consolidated Statements of Condition. These investments are accounted for either under the cost method or the equity method of accounting. As of December 31, 2018 , the Company reviewed these investments and determined that there was no impairment. Federal Home Loan Bank Stock The Company also holds non-marketable Federal Home Loan Bank New York (“FHLBNY”) stock, non-marketable Federal Home Loan Bank Pittsburgh (“FHLBPITT”) stock and non-marketable Atlantic Community Bankers Bank (“ACBB”) stock, all of which are required to be held for regulatory purposes and for borrowing availability. The required investment in FHLB stock is tied to the Company’s borrowing levels with the FHLB. Holdings of FHLBNY stock, FHLBPITT stock and ACBB stock totaled $37.4 million , $14.8 million and $95,000 at December 31, 2018 , respectively. These securities are carried at par, which is also cost. The FHLBNY and FHLBPITT continue to pay dividends and repurchase stock. As such, the Company has not recognized any impairment on its holdings of FHLBNY and FHLBPITT stock.

Allowance for Loan and Lease Lo

Allowance for Loan and Lease Losses	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
Allowance for Loan and Lease Losses	Allowance for Loan and Lease Losses Originated Loans and Leases Management reviews the appropriateness of the allowance for loan and lease losses (“allowance”) on a regular basis. Management considers the accounting policy relating to the allowance to be a critical accounting policy, given the inherent uncertainty in evaluating the levels of the allowance required to cover credit losses in the portfolio and the material effect that assumptions could have on the Company’s results of operations. The Company has developed a methodology to measure the amount of estimated loan loss exposure inherent in the loan portfolio to assure that an appropriate allowance is maintained. The Company’s methodology is based upon guidance provided in SEC Staff Accounting Bulletin No. 102, Selected Loan Loss Allowance Methodology and Documentation Issues and allowance allocations are calculated in accordance with ASC Topic 310, Receivables and ASC Topic 450, Contingencies . The model is comprised of four major components that management has deemed appropriate in evaluating the appropriateness of the allowance for loan and lease losses. While none of these components, when used independently, is effective in arriving at a reserve level that appropriately measures the risk inherent in the portfolio, management believes that using them collectively, provides reasonable measurement of the loss exposure in the portfolio. The four components include: impaired loans; criticized and classified credits; historical loss experience; and qualitative or subjective analysis. Since the methodology is based upon historical experience and trends as well as management’s judgment, factors may arise that result in different estimations. Significant factors that could give rise to changes in these estimates may include, but are not limited to, changes in economic conditions in the local area, concentration of risk, changes in interest rates, and declines in local property values. While management’s evaluation of the allowance as of December 31, 2018 , considers the allowance to be appropriate, under different conditions or assumptions, the Company may need to adjust the allowance. Acquired Loans and Leases As part of our determination of the fair value of our acquired loans at the time of acquisition, the Company established a credit mark to provide for future losses in our acquired loan portfolio. To the extent that credit quality deteriorates subsequent to acquisition, such deterioration would result in the establishment of an allowance for the acquired loan portfolio. Changes in the allowance for loan and lease losses for the twelve months ended December 31, 2018, 2017 and 2016 are summarized as follows: (in thousands) 2018 2017 2016 Total allowance at beginning of year $ 39,771 $ 35,755 $ 32,004 Provisions charged to operations 3,942 4,161 4,321 Recoveries on loans and leases 2,137 2,429 2,139 Charge-offs on loans and leases (2,440 ) (2,574 ) (2,709 ) Total allowance at end of year $ 43,410 $ 39,771 $ 35,755 The following tables detail activity in the allowance for originated and acquired loan and lease losses by portfolio segment for the twelve months ended December 31, 2018 and 2017 . December 31, 2018 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Allowance for originated loans and leases: Beginning balance $ 11,812 $ 20,412 $ 6,161 $ 1,301 $ 0 $ 39,686 Charge-offs (293 ) (60 ) (424 ) (1,350 ) 0 (2,127 ) Recoveries 50 812 324 679 0 1,865 Provision (352 ) 2,319 1,256 674 0 3,897 Ending Balance $ 11,217 $ 23,483 $ 7,317 $ 1,304 $ 0 $ 43,321 December 31, 2018 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Allowance for acquired loans: Beginning balance $ 25 $ 0 $ 54 $ 6 $ 0 $ 85 Charge-offs (41 ) (82 ) (190 ) 0 0 (313 ) Recoveries 106 31 135 0 0 272 Provision (35 ) 51 29 0 0 45 Ending Balance $ 55 $ 0 $ 28 $ 6 $ 0 $ 89 December 31, 2017 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Allowance for originated loans and leases: Beginning balance $ 9,389 $ 19,836 $ 5,149 $ 1,224 $ 0 $ 35,598 Charge-offs (291 ) (21 ) (584 ) (960 ) 0 (1,856 ) Recoveries 119 980 212 405 0 1,716 Provision 2,595 (383 ) 1,384 632 0 4,228 Ending Balance $ 11,812 $ 20,412 $ 6,161 $ 1,301 $ 0 $ 39,686 December 31, 2017 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Allowance for acquired loans: Beginning balance $ 0 $ 97 $ 54 $ 6 $ 0 $ 157 Charge-offs (74 ) (159 ) (483 ) (2 ) 0 (718 ) Recoveries 24 637 44 8 0 713 Provision 75 (575 ) 439 (6 ) 0 (67 ) Ending Balance $ 25 $ 0 $ 54 $ 6 $ 0 $ 85 At December 31, 2018 and 2017 , the allocation of the allowance for loan and lease losses summarized on the basis of the Company’s impairment methodology was as follows: December 31, 2018 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Allowance for originated loans and leases: Individually evaluated for impairment $ 397 $ 3,365 $ 0 $ 0 $ 0 $ 3,762 Collectively evaluated for impairment 10,820 20,118 7,317 1,304 0 39,559 Ending balance $ 11,217 $ 23,483 $ 7,317 $ 1,304 $ 0 $ 43,321 Allowance for acquired loans: Individually evaluated for impairment $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 Collectively evaluated for impairment 55 0 28 6 0 89 Ending balance $ 55 $ 0 $ 28 $ 6 $ 0 $ 89 December 31, 2017 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Allowance for originated loans and leases: Individually evaluated for impairment $ 441 $ 0 $ 0 $ 0 $ 0 $ 441 Collectively evaluated for impairment 11,371 20,412 6,161 1,301 0 39,245 Ending balance $ 11,812 $ 20,412 $ 6,161 $ 1,301 $ 0 $ 39,686 Allowance for acquired loans: Individually evaluated for impairment $ 25 $ 0 $ 0 $ 0 $ 0 $ 25 Collectively evaluated for impairment 0 0 54 6 0 60 Ending balance $ 25 $ 0 $ 54 $ 6 $ 0 $ 85 The recorded investment in loans and leases summarized on the basis of the Company’s impairment methodology as of December 31, 2018 and December 31, 2017 was as follows: December 31, 2018 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Originated loans and leases: Individually evaluated for impairment $ 1,864 $ 8,388 $ 3,915 $ 0 $ 0 $ 14,167 Collectively evaluated for impairment 1,032,059 2,153,181 1,288,346 70,228 14,556 4,558,370 Total $ 1,033,923 $ 2,161,569 $ 1,292,261 $ 70,228 $ 14,556 $ 4,572,537 December 31, 2018 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Acquired loans: Individually evaluated for impairment $ 32 $ 842 $ 2,564 $ 0 $ 0 $ 3,438 Loans acquired with deteriorated credit quality 153 5,852 5,031 0 0 11,036 Collectively evaluated for impairment 43,527 172,398 34,038 761 0 250,724 Total $ 43,712 $ 179,092 $ 41,633 $ 761 $ 0 $ 265,198 December 31, 2017 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Originated loans and leases: Individually evaluated for impairment $ 1,759 $ 6,626 $ 3,965 $ 0 $ 0 $ 12,350 Collectively evaluated for impairment 1,038,916 1,986,354 1,247,887 62,358 14,467 4,349,982 Total $ 1,040,675 $ 1,992,980 $ 1,251,852 $ 62,358 $ 14,467 $ 4,362,332 December 31, 2017 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Acquired loans: Individually evaluated for impairment $ 276 $ 1,372 $ 1,823 $ 0 $ 0 $ 3,471 Loans acquired with deteriorated credit quality 506 7,481 3,975 0 0 11,962 Collectively evaluated for impairment 50,194 198,894 45,291 765 0 295,144 Total $ 50,976 $ 207,747 $ 51,089 $ 765 $ 0 $ 310,577 A loan is impaired when, based on current information and events, it is probable that we will be unable to collect all amounts due according to the contractual terms of the loan agreement. Impaired loans consist of our non-homogenous nonaccrual loans, and all loans restructured in a troubled debt restructuring (TDR). Specific reserves on individually identified impaired loans that are not collateral dependent are measured based on the present value of expected future cash flows discounted at the original effective interest rate of each loan. For loans that are collateral dependent, impairment is measured based on the fair value of the collateral less estimated selling costs, and such impaired amounts are generally charged off. The majority of impaired loans are collateral dependent impaired loans that have limited exposure or require limited specific reserves because of the amount of collateral support with respect to these loans, and previous charge-offs. Interest payments on impaired loans are typically applied to principal unless collectability of the principal amount is reasonably assured. In these cases, interest is recognized on a cash basis. There was no interest income recognized on impaired loans and leases for 2018 , 2017 and 2016 . The recorded investment on impaired loans as of December 31, 2018 , and 2017 was as follows: December 31, 2018 December 31, 2017 (in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance Originated loans and leases with no related allowance Commercial and industrial Commercial and industrial other $ 183 $ 271 $ 0 $ 1,246 $ 1,250 $ 0 Commercial real estate Commercial real estate other 3,205 3,405 0 6,626 6,633 0 Residential real estate Home equity 3,915 4,168 0 3,965 4,049 0 Subtotal $ 7,303 $ 7,844 $ 0 $ 11,837 $ 11,932 $ 0 Originated loans and leases with related allowance Commercial and industrial Commercial and industrial other $ 5,183 $ 5,183 $ 3,365 $ 513 $ 532 $ 441 Commercial real estate Commercial real estate other 1,681 1,681 397 0 0 0 Subtotal 6,864 6,864 3,762 513 532 441 Total $ 14,167 $ 14,708 $ 3,762 $ 12,350 $ 12,464 $ 441 December 31, 2018 December 31, 2017 (in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance Acquired loans with no related allowance Commercial and industrial Commercial and industrial other $ 32 $ 32 $ 0 $ 226 $ 226 $ 0 Commercial real estate Commercial real estate other 842 924 0 1,372 1,474 0 Residential real estate Home equity 2,564 2,696 0 1,823 1,854 0 Subtotal $ 3,438 $ 3,652 $ 0 $ 3,421 $ 3,554 $ 0 Acquired loans with related allowance Commercial and industrial Commercial and industrial other $ 0 $ 0 $ 0 $ 50 $ 50 $ 25 Subtotal 0 0 0 50 50 25 Total $ 3,438 $ 3,652 $ 0 $ 3,471 $ 3,604 $ 25 The average recorded investment and interest income recognized on impaired originated loans for the twelve months ended December 31, 2018 , 2017 , and 2016 was as follows: Twelve Months Ended December 31, 2018 2017 2016 (in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Originated loans and leases with no related allowance Commercial and industrial Commercial and industrial other $ 1,979 $ 0 $ 718 $ 0 $ 249 $ 0 Commercial real estate Commercial real estate other 5,165 0 7,287 0 6,089 0 Residential real estate Home equity 3,983 0 3,551 0 3,003 0 Subtotal $ 11,127 $ 0 $ 11,556 $ 0 $ 9,341 $ 0 Originated loans and leases with related allowance Commercial and industrial Commercial and industrial other $ 1,374 $ 0 $ 276 $ 0 $ 114 $ 0 Commercial real estate Commercial real estate other 1,357 0 0 0 1,715 0 Subtotal $ 2,731 $ 0 $ 276 $ 0 $ 1,829 $ 0 Total $ 13,858 $ 0 $ 11,832 $ 0 $ 11,170 $ 0 The average recorded investment and interest income recognized on impaired acquired loans for the twelve months ended December 31, 2018 , 2017 and 2016 was as follows: Twelve Months Ended December 31, 2018 2017 2016 (in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Acquired loans with no related allowance Commercial and industrial Commercial and industrial other $ 50 $ 0 $ 111 $ 0 $ 183 $ 0 Commercial real estate Construction 0 0 0 0 152 0 Commercial real estate other 999 0 2,141 0 4,141 0 Residential real estate Home equity 2,945 0 1,861 0 1,316 0 Subtotal $ 3,994 $ 0 $ 4,113 $ 0 $ 5,792 $ 0 Acquired loans with related allowance Commercial and industrial Commercial and industrial other $ 0 $ 0 $ 10 $ 0 $ 0 $ 0 Commercial real estate Commercial real estate other 0 0 0 0 58 0 Subtotal $ 0 $ 0 $ 10 $ 0 $ 58 $ 0 Total $ 3,994 $ 0 $ 4,123 $ 0 $ 5,850 $ 0 The average recorded investment in impaired loans was $17.9 million at December 31, 2018 , $15.8 million at December 31, 2017 , and $17.0 million at December 31, 2016 . Loans are considered modified in a TDR when, due to a borrower’s financial difficulties, the Company makes a concession(s) to the borrower that it would not otherwise consider. When modifications are provided for reasons other than as a result of the financial distress of the borrower, these loans are not classified as TDRs or impaired. These modifications primarily include, among others, an extension of the term of the loan, and granting a period when interest-only payments can be made, with the principal payments and interest caught up over the remaining term of the loan or at maturity, among others. The following tables present loans by class modified in 2018 and 2017 as troubled debt restructurings. Troubled Debt Restructuring December 31, 2018 Twelve months ended Defaulted TDRs 3 (in thousands) Number Pre-Modification Post- Number Post- Commercial real estate Commercial real estate other 1 1 26 26 0 0 Residential real estate Home equity 2 6 $ 507 $ 507 0 $ 0 Total 7 $ 533 $ 533 0 $ 0 1 Represents the following concessions: extension of term and reduction of rate. 2 Represents the following concessions: extension of term and reduction of rate. 3 TDRs that defaulted during the 12 months ended December 31, 2018 that had been restructured in the prior twelve months. December 31, 2017 Twelve months ended Defaulted TDRs 2 (in thousands) Number Pre-Modification Post- Number Post- Residential real estate Home equity 1 6 $ 716 $ 716 1 $ 55 Total 6 $ 716 $ 716 1 $ 55 1 Represents the following concessions: extension of term and reduction of rate. 2 TDRs that defaulted during the 12 months ended December 31, 2017 that had been restructured in the prior twelve months. The Company recognized TDRs with a balance of $533,000 during 2018 , compared to $716,000 in 2017 . The Company was not committed to lend additional amounts as of December 31, 2018 to customers with outstanding loans that are classified as TDRs. The following table presents credit quality indicators (internal risk grade) by class of commercial loans, commercial real estate loans and agricultural loans as of December 31, 2018 and 2017 . December 31, 2018 (in thousands) Commercial and Industrial Other Commercial and Industrial Agriculture Commercial Real Estate Other Commercial Real Estate Agriculture Commercial Real Estate Construction Total Originated loans and leases Internal risk grade: Pass $ 910,476 $ 93,939 $ 1,797,599 $ 157,156 $ 164,285 $ 3,123,455 Special Mention 8,675 4,951 9,484 4,964 0 28,074 Substandard 7,278 8,604 20,196 7,885 0 43,963 Total $ 926,429 $ 107,494 $ 1,827,279 $ 170,005 $ 164,285 $ 3,195,492 December 31, 2018 (in thousands) Commercial and Industrial Other Commercial and Industrial Agriculture Commercial Real Estate Other Commercial Real Estate Agriculture Commercial Real Estate Construction Total Acquired loans Internal risk grade: Pass $ 43,447 $ 0 $ 174,383 $ 224 $ 1,384 $ 219,438 Special Mention 0 0 452 0 0 452 Substandard 265 0 2,649 0 0 2,914 Total $ 43,712 $ 0 $ 177,484 $ 224 $ 1,384 $ 222,804 December 31, 2017 (in thousands) Commercial and Industrial Other Commercial and Industrial Agriculture Commercial Real Estate Other Commercial Real Estate Agriculture Commercial Real Estate Construction Total Originated loans and leases Internal risk grade: Pass $ 919,214 $ 100,470 $ 1,627,713 $ 119,392 $ 201,948 $ 2,968,737 Special Mention 6,680 8,068 19,068 9,980 538 44,334 Substandard 6,173 70 14,001 340 0 20,584 Total $ 932,067 $ 108,608 $ 1,660,782 $ 129,712 $ 202,486 $ 3,033,655 December 31, 2017 (in thousands) Commercial and Industrial Other Commercial and Industrial Agriculture Commercial Real Estate Other Commercial Real Estate Agriculture Commercial Real Estate Construction Total Acquired loans Internal risk grade: Pass $ 50,554 $ 0 $ 198,822 $ 247 $ 1,480 $ 251,103 Special Mention 0 0 2,265 0 0 2,265 Substandard 422 0 4,933 0 0 5,355 Total $ 50,976 $ 0 $ 206,020 $ 247 $ 1,480 $ 258,723 The following table presents credit quality indicators by class of residential real estate loans and by class of consumer loans as of December 31, 2018 and 2017 . Nonperforming loans include nonaccrual, impaired and loans 90 days past due and accruing interest, all other loans are considered performing. December 31, 2018 (in thousands) Residential Home Equity Residential Mortgages Consumer Indirect Consumer Other Total Originated loans and leases Performing $ 206,675 $ 1,076,032 $ 12,508 $ 57,486 $ 1,352,701 Nonperforming 1,784 7,770 155 79 9,788 Total $ 208,459 $ 1,083,802 $ 12,663 $ 57,565 $ 1,362,489 December 31, 2018 (in thousands) Residential Home Equity Residential Mortgages Consumer Indirect Consumer Other Total Acquired Loans and Leases Performing $ 19,735 $ 19,380 $ 0 $ 761 $ 39,876 Nonperforming 1,414 1,104 0 0 2,518 Total $ 21,149 $ 20,484 $ 0 $ 761 $ 42,394 December 31, 2017 (in thousands) Residential Home Equity Residential Mortgages Consumer Indirect Consumer Other Total Originated loans and leases Performing $ 211,275 $ 1,032,932 $ 11,866 $ 50,138 $ 1,306,211 Nonperforming 1,537 6,108 278 76 7,999 Total $ 212,812 $ 1,039,040 $ 12,144 $ 50,214 $ 1,314,210 December 31, 2017 (in thousands) Residential Home Equity Residential Mortgages Consumer Indirect Consumer Other Total Acquired loans Performing $ 26,840 $ 21,531 $ 0 $ 765 $ 49,136 Nonperforming 1,604 1,114 0 0 2,718 Total $ 28,444 $ 22,645 $ 0 $ 765 $ 51,854

Loans and Leases

Loans and Leases	12 Months Ended
	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Abstract]
Loans and Leases	Loans and Leases Loans and Leases at December 31, 2018 and December 31, 2017 were as follows: December 31, 2018 December 31, 2017 (in thousands) Originated Acquired Total Loans and Leases Originated Acquired Total Loans and Leases Commercial and industrial Agriculture $ 107,494 $ 0 $ 107,494 $ 108,608 $ 0 $ 108,608 Commercial and industrial other 926,429 43,712 970,141 932,067 50,976 983,043 Subtotal commercial and industrial 1,033,923 43,712 1,077,635 1,040,675 50,976 1,091,651 Commercial real estate Construction 164,285 1,384 165,669 202,486 1,480 203,966 Agriculture 170,005 224 170,229 129,712 247 129,959 Commercial real estate other 1,827,279 177,484 2,004,763 1,660,782 206,020 1,866,802 Subtotal commercial real estate 2,161,569 179,092 2,340,661 1,992,980 207,747 2,200,727 Residential real estate Home equity 208,459 21,149 229,608 212,812 28,444 241,256 Mortgages 1,083,802 20,484 1,104,286 1,039,040 22,645 1,061,685 Subtotal residential real estate 1,292,261 41,633 1,333,894 1,251,852 51,089 1,302,941 Consumer and other Indirect 12,663 0 12,663 12,144 0 12,144 Consumer and other 57,565 761 58,326 50,214 765 50,979 Subtotal consumer and other 70,228 761 70,989 62,358 765 63,123 Leases 14,556 0 14,556 14,467 0 14,467 Total loans and leases 4,572,537 265,198 4,837,735 4,362,332 310,577 4,672,909 Less: unearned income and deferred costs and fees (3,796 ) 0 (3,796 ) (3,789 ) 0 (3,789 ) Total loans and leases, net of unearned income and deferred costs and fees $ 4,568,741 $ 265,198 $ 4,833,939 $ 4,358,543 $ 310,577 $ 4,669,120 The outstanding principal balance and the related carrying amount of the Company’s loans acquired in the VIST Acquisition were as follows at December 31: (in thousands) December 31, 2018 December 31, 2017 Acquired Credit Impaired Loans Outstanding principal balance $ 12,822 $ 14,337 Carrying amount 11,036 11,962 Acquired Non-Credit Impaired Loans Outstanding principal balance 256,265 301,128 Carrying amount 254,162 298,615 Total Acquired Loans Outstanding principal balance $ 269,087 $ 315,465 Carrying amount $ 265,198 $ 310,577 The Company has adopted comprehensive lending policies, underwriting standards and loan review procedures. There were no significant changes to the Company’s existing lending policies, underwriting standards or loan review procedures during 2018 . The Company’s Board of Directors approves the lending policies at least annually. The Company recognizes that exceptions to policy guidelines may occasionally occur and has established procedures for approving exceptions to these policy guidelines. Management has also implemented reporting systems to monitor loan originations, loan quality, concentrations of credit, loan delinquencies and nonperforming loans and potential problem loans. Residential real estate loans The Company’s policy is to underwrite residential real estate loans in accordance with secondary market guidelines in effect at the time of origination, including loan-to-value (“LTV”) and documentation requirements. LTVs exceeding 80% for fixed rate loans and 85% for adjustable rate loans require private mortgage insurance to reduce the exposure to 78% . The Company verifies applicants’ income, obtains credit reports and independent real estate appraisals in the underwriting process to ensure adequate collateral coverage and that loans are extended to individuals with good credit and income sufficient to repay the loan. In limited circumstances, the Company will make exceptions to secondary market underwriting standards to support community reinvestment activities. The Company originates fixed rate and adjustable rate residential mortgage loans, including loans that have characteristics of both, such as a 7/1 adjustable rate mortgage, which has a fixed rate for the first seven years and then adjusts annually thereafter. The majority of residential mortgage loans originated over the last several years have been fixed rate loans due to the low interest rate environment. Adjustable rate residential real estate loans may be underwritten based upon an initial rate which is below the fully indexed rate; however, the initial rate is generally less than 100 basis points below the fully indexed rate. As such, the Company does not believe that this practice creates any significant credit risk. The Company may sell residential real estate loans in the secondary market based on interest rate considerations. These residential real estate loans are generally sold to Federal Home Loan Mortgage Corporation (“FHLMC”) or State of New York Mortgage Agency (“SONYMA”) without recourse in accordance with standard secondary market loan sale agreements. These residential real estate loan sales are subject to customary representations and warranties, including representations and warranties related to gross incompetence and fraud. The Company has not had to repurchase any loans as a result of these general representations and warranties. During 2018 , 2017 , and 2016 , the Company sold residential mortgage loans totaling $27.7 million , $4.6 million , and $3.9 million , respectively, and realized net gains on these sales of $458,000 , $50,000 , and $95,000 , respectively. These residential real estate loans are generally sold without recourse in accordance with standard secondary market loan sale agreements. When residential mortgage loans are sold to FHLMC or SONYMA, the Company typically retains all servicing rights, which provides the Company with a source of fee income. In connection with the sales in 2018 , 2017 , and 2016 , the Company recorded mortgage-servicing assets of $207,000 , $38,000 , and $21,000 , respectively. Amortization of mortgage servicing assets amounted to $69,000 in 2018 , $122,000 in 2017 , and $157,000 in 2016 . At December 31, 2018 and 2017 , the Company serviced residential mortgage loans aggregating $120.9 million and $104.1 million , including loans securitized and held as available-for-sale securities. Mortgage servicing rights, at amortized basis, totaled $805,000 at December 31, 2018 and $667,000 at December 31, 2017 . These mortgage servicing rights were evaluated for impairment at year-end 2018 and 2017 and no impairment was recognized. Loans held for sale, which are included in residential real estate totaled $2.7 million and $280,000 at December 31, 2018 and 2017 , respectively. As members of the FHLB, the Company’s subsidiary banks may use unencumbered mortgage related assets to secure borrowings from the FHLB. At December 31, 2018 and 2017 , the Company had $425.0 million and $475.0 million , respectively, of term advances from the FHLB that were secured by residential mortgage loans. Commercial and industrial loans The Company’s Commercial Loan Policy sets forth guidelines for debt service coverage ratios, LTV’s and documentation standards. Commercial and industrial loans are primarily made based on identified cash flows of the borrower with consideration given to underlying collateral and personal or government guarantees. The Company’s policy establishes debt service coverage ratio limits that require a borrower’s cash flow to be sufficient to cover principal and interest payments on all new and existing debt. Commercial and industrial loans are generally secured by the assets being financed or other business assets such as accounts receivable or inventory. Many of the loans in the commercial portfolio have variable interest rates tied to Prime Rate, FHLBNY borrowing rates, or U.S. Treasury indices. Commercial real estate The Company’s Commercial Loan Policy sets forth guidelines for debt service coverage ratios, LTV’s and documentation standards. Commercial real estate loans are primarily made based on identified cash flows of the borrower with consideration given to underlying real estate collateral and personal or government guarantees. The Company’s policy establishes a maximum LTV of 75% and debt service coverage ratio limits that require a borrower’s cash flow to be sufficient to cover principal and interest payments on all new and existing debt. Commercial real estate loans may be fixed or variable rate loans with interest rates tied to Prime Rate, FHLBNY borrowing rates, or U.S. Treasury indices. Agriculture loans Agriculturally-related loans include loans to dairy farms and vegetable crop farms. Agriculturally-related loans are primarily made based on identified cash flows of the borrower with consideration given to underlying collateral, personal guarantees, and government related guarantees. Agriculturally-related loans are generally secured by the assets or property being financed or other business assets such as accounts receivable, livestock, equipment, or commodities/crops. The Company’s Commercial Loan Policy establishes a maximum LTV of 75% for real estate secured loans and debt service coverage ratio limits that require a borrower’s cash flow to be sufficient to cover principal and interest payments on all new and existing debt. The policy also establishes maximum LTV ratios for non-real estate collateral, such as livestock, commodities/crops, equipment and accounts receivable. Agriculturally-related loans may be fixed or variable rate with interest tied to Prime Rate, FHLBNY borrowing rates, or U.S. Treasury indices. Consumer and other loans The consumer loan portfolio includes personal installment loans, direct and indirect automobile financing, and overdraft lines of credit. The majority of the consumer portfolio consists of indirect and direct automobile loans. Consumer loans are generally short-term and have fixed rates of interest that are set giving consideration to current market interest rates, the financial strength of the borrower, and internal profitability targets. The Company's Consumer Loan Underwriting Guidelines Policy establishes maximum debt to income ratios and includes guidelines for verification of applicants’ income and receipt of credit reports. Leases Leases are primarily made to commercial customers and the origination criteria typically includes the value of the underlying assets being financed, the useful life of the assets being financed, and identified cash flows of the borrower. Most leases carry a fixed rate of interest that is set giving consideration to current market interest rates, the financial strength of the borrower, and internal profitability targets. Loan and Lease Customers The Company’s loan and lease customers are located primarily in the upstate New York communities served by its three subsidiary banks and in the Pennsylvania communities served by VIST Bank. The Trust Company operates fourteen banking offices in the counties of Tompkins, Cayuga, Cortland, Onondaga and Schuyler, New York. The Bank of Castile operates eighteen banking offices in the counties of Wyoming, Livingston, Genesee, Orleans and Monroe, New York. Mahopac Bank operates fourteen banking offices in the counties of Putnam County, Dutchess County and Westchester, New York. VIST Bank operates twenty offices in the counties of Berks, Montgomery, Philadelphia, Delaware and Schuylkill, Pennsylvania. Other than general economic risks, management is not aware of any material concentrations of credit risk to any industry or individual borrower. Directors and officers of the Company and its affiliated companies were customer of, and had other transactions with, the Company's banking subsidiaries in the ordinary course of business. Such loans and commitments were made on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with other persons not related to the Company, and did not involve more than normal risk of collectability or present other unfavorable features. Loans to Related Parties Loan transactions with related parties at December 31 are summarized as follows: (in thousands) 2018 2017 Balance at beginning of year $ 14,503 $ 11,662 New Directors/Executive Officers 467 0 New loans and advancements 30,570 3,972 Loan payments (5,945 ) (1,131 ) Balance at end of year $ 39,595 $ 14,503 Nonaccrual Loans and Leases Loans are considered past due if the required principal and interest payments have not been received as of the date such payments are due. Loans are placed on nonaccrual status either due to the delinquency status of principal and/or interest (generally when past due 90 or more days) or a judgment by management that the full repayment of principal and interest is unlikely. When interest accrual is discontinued, all unpaid accrued interest is reversed. Payments received on loans on nonaccrual are generally applied to reduce the principal balance of the loan. Loans are generally returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. When management determines that the collection of principal in full is improbable, management will charge-off a partial amount or full amount of the loan balance. Management considers specific facts and circumstances relative to each individual credit in making such a determination. For residential and consumer loans, management uses specific regulatory guidance and thresholds for determining charge-offs. Acquired loans that met the criteria for nonaccrual of interest prior to the acquisition may be considered performing upon acquisition, regardless of whether the customer is contractually delinquent, if we can reasonably estimate the timing and amount of the expected cash flows on such loans and if the Company expects to fully collect the new carrying value of the loans. As such, we may no longer consider the loan to be nonaccrual or nonperforming and may accrue interest on these loans, including the impact of any accretable discount. The Company has determined that it can reasonably estimate future cash flows on our current portfolio of acquired loans that are past due 90 days or more and on which the Company is accruing interest and expect to fully collect the carrying value of the loans net of the allowance for acquired loan losses. The below table is an aging analysis of past due loans, segregated by originated and acquired loan and lease portfolios, and by class of loans, as of December 31, 2018 and 2017 . December 31, 2018 (in thousands) 30-89 days 90 days or more Current Loans Total Loans 90 days and accruing 1 Nonaccrual Originated Loans and Leases Commercial and industrial Agriculture $ 0 $ 0 $ 107,494 $ 107,494 $ 0 $ 0 Commercial and industrial other 2,367 1,659 922,403 926,429 0 1,861 Subtotal commercial and industrial 2,367 1,659 1,029,897 1,033,923 0 1,861 Commercial real estate Construction 0 0 164,285 164,285 0 0 Agriculture 71 0 169,934 170,005 0 0 Commercial real estate other 1,201 1,856 1,824,222 1,827,279 0 7,691 Subtotal commercial real estate 1,272 1,856 2,158,441 2,161,569 0 7,691 Residential real estate Home equity 986 1,026 206,447 208,459 0 1,784 Mortgages 2,693 4,027 1,077,082 1,083,802 0 7,770 Subtotal residential real estate 3,679 5,053 1,283,529 1,292,261 0 9,554 Consumer and other Indirect 333 59 12,271 12,663 0 155 Consumer and other 187 24 57,354 57,565 0 79 Subtotal consumer and other 520 83 69,625 70,228 0 234 Leases 0 0 14,556 14,556 0 0 Total loans and leases 7,838 8,651 4,556,048 4,572,537 0 19,340 Less: unearned income and deferred costs and fees 0 0 (3,796 ) (3,796 ) 0 0 Total originated loans and leases, net of unearned income and deferred costs and fees $ 7,838 $ 8,651 $ 4,552,252 $ 4,568,741 $ 0 $ 19,340 Acquired Loans and Leases Commercial and industrial Commercial and industrial other $ 0 $ 10 $ 43,702 $ 43,712 $ 10 $ 22 Subtotal commercial and industrial 0 10 43,702 43,712 10 22 Commercial real estate Construction 0 0 1,384 1,384 0 0 Agriculture 0 0 224 224 0 0 Commercial real estate other 0 839 176,645 177,484 525 316 Subtotal commercial real estate 0 839 178,253 179,092 525 316 Residential real estate Home equity 46 803 20,300 21,149 59 1,414 Mortgages 18 969 19,497 20,484 722 1,104 Subtotal residential real estate 64 1,772 39,797 41,633 781 2,518 Consumer and other Consumer and other 3 0 758 761 0 0 Subtotal consumer and other 3 0 758 761 0 0 Total acquired loans and leases, net of unearned income and deferred costs and fees $ 67 $ 2,621 $ 262,510 $ 265,198 $ 1,316 $ 2,856 1 Includes acquired loans that were recorded at fair value at the acquisition date. December 31, 2017 (in thousands) 30-89 days 90 days or more Current Loans Total Loans 90 days and accruing 1 Nonaccrual Originated loans and leases Commercial and industrial Agriculture $ 0 $ 0 $ 108,608 $ 108,608 $ 0 $ 0 Commercial and industrial other 431 849 930,787 932,067 0 2,852 Subtotal commercial and industrial 431 849 1,039,395 1,040,675 0 2,852 Commercial real estate Construction 0 0 202,486 202,486 0 0 Agriculture 0 0 129,712 129,712 0 0 Commercial real estate other 1,583 2,125 1,657,074 1,660,782 0 5,402 Subtotal commercial real estate 1,583 2,125 1,989,272 1,992,980 0 5,402 Residential real estate Home equity 1,045 448 211,319 212,812 0 1,537 Mortgages 3,153 2,692 1,033,195 1,039,040 0 6,108 Subtotal residential real estate 4,198 3,140 1,244,514 1,251,852 0 7,645 Consumer and other Indirect 449 205 11,490 12,144 6 278 Consumer and other 130 42 50,042 50,214 38 76 Subtotal consumer and other 579 247 61,532 62,358 44 354 Leases 0 0 14,467 14,467 0 0 Total loans and leases 6,791 6,361 4,349,180 4,362,332 44 16,253 Less: unearned income and deferred costs and fees 0 0 (3,789 ) (3,789 ) 0 0 Total originated loans and leases, net of unearned income and deferred costs and fees $ 6,791 $ 6,361 $ 4,345,391 $ 4,358,543 $ 44 $ 16,253 Acquired loans and leases Commercial and industrial Commercial and industrial other $ 12 $ 61 $ 50,903 $ 50,976 $ 61 $ 0 Subtotal commercial and industrial 12 61 50,903 50,976 61 0 Commercial real estate Construction 0 0 1,480 1,480 0 0 Agriculture 0 0 247 247 0 0 Commercial real estate other 167 727 205,126 206,020 515 546 Subtotal commercial real estate 167 727 206,853 207,747 515 546 Residential real estate Home equity 601 564 27,279 28,444 130 1,604 Mortgages 472 942 21,231 22,645 440 1,114 Subtotal residential real estate 1,073 1,506 48,510 51,089 570 2,718 Consumer and other Consumer and other 4 0 761 765 0 0 Subtotal consumer and other 4 0 761 765 0 0 Total acquired loans and leases, net of unearned income and deferred costs and fees $ 1,256 $ 2,294 $ 307,027 $ 310,577 $ 1,146 $ 3,264 1 Includes acquired loans that were recorded at fair value at the acquisition date. The difference between the interest income that would have been recorded if nonaccrual loans and leases had paid in accordance with their original terms and the interest income that was recorded, was $1.0 million for each of the years ended December 31, 2018 , 2017 and 2016 . The Company had no material commitments to make additional advances to borrowers with nonperforming loans.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets (in thousands) Banking Insurance Wealth Management Total Balance at January 1, 2017 $ 64,369 $ 20,043 $ 8,211 $ 92,623 Goodwill related to sale of portion of business unit 1 0 (332 ) 0 (332 ) Balance at December 31, 2017 $ 64,369 $ 19,711 $ 8,211 $ 92,291 Goodwill related to sale of portion of business unit 1 0 (8 ) 0 (8 ) Balance at December 31, 2018 $ 64,369 $ 19,703 $ 8,211 $ 92,283 1 The $8,000 and $332,000 reduction of goodwill in 2018 and 2017 , respectively, reflects an adjustment related to the sale of a portion of insurance revenues. In 2017 , Tompkins Insurance sold a portion of its personal lines insurance revenues, which had been acquired in a previous acquisition, to a third party. In 2018, Tompkins Insurance adjusted the goodwill related to the sale in 2017. Goodwill is assigned to reporting units. The Company reviews its goodwill and intangible assets annually, or more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying value. Based on the Company’s review as of December 31, 2018 , there was no impairment of its goodwill or intangible assets. The Company’s impairment testing is highly sensitive to certain assumptions and estimates used. In the event that economic or credit conditions deteriorate significantly, additional interim impairment tests may be required. Other Intangible Assets The following table provides information regarding the Company's amortizing intangible assets: December 31, 2018 Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in thousands) Amortized intangible assets: Core deposit intangible $ 18,774 $ 15,386 $ 3,388 Customer relationships 8,877 5,888 2,989 Other intangibles 5,983 4,732 1,251 Total intangible assets $ 33,634 $ 26,006 $ 7,628 December 31, 2017 Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in thousands) Amortized intangible assets: Core deposit intangible $ 18,774 $ 14,302 $ 4,472 Customer relationships 8,878 5,339 3,539 Other intangibles 5,776 4,524 1,252 Total intangible assets $ 33,428 $ 24,165 $ 9,263 Amortization expense related to intangible assets totaled $1.8 million in 2018 , $1.9 million in 2017 and $2.1 million in 2016 . The estimated aggregate future amortization expense for intangible assets remaining as of December 31, 2018 is as follows: Estimated amortization expense:* (in thousands) For the year ended December 31, 2019 $ 1,671 For the year ended December 31, 2020 1,472 For the year ended December 31, 2021 1,307 For the year ended December 31, 2022 864 For the year ended December 31, 2023 302 *Excludes the amortization of mortgage servicing rights. Amortization of mortgage servicing rights was $69,000 in 2018 , $122,000 in 2017 and $157,000 in 2016 .

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Premises and Equipment	Premises and Equipment Premises and equipment at December 31 were as follows: (in thousands) 2018 2017 Land $ 9,348 $ 9,245 Premises and equipment 103,850 95,272 Furniture, fixtures, and equipment 73,013 68,023 Accumulated depreciation and amortization (89,009 ) (85,545 ) Total $ 97,202 $ 86,995 Depreciation and amortization expenses in 2018 , 2017 and 2016 are included in operating expenses as follows: (in thousands) 2018 2017 2016 Premises $ 2,989 $ 2,527 $ 2,247 Furniture, fixtures, and equipment 4,615 4,297 4,004 Total $ 7,604 $ 6,824 $ 6,251 The following is a summary of the future minimum lease payments under non-cancelable operating leases as of December 31, 2018 : (in thousands) 2019 $ 4,790 2020 3,995 2021 3,644 2022 3,429 2023 3,386 Thereafter 13,023 Total $ 32,267 The Company leases land, buildings and equipment under operating lease arrangements. Total gross rental expense amounted to $4.7 million in 2018 , $5.1 million in 2017 , and $5.2 million in 2016 . Most leases include options to renew for periods ranging from 5 to 20 years . Options to renew are not included in the above future minimum rental commitments.

Deposits

Deposits	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Deposits	Deposits Aggregate time deposits of $250,000 or more were $156.6 million at December 31, 2018 , and $221.7 million at December 31, 2017 . Scheduled maturities of time deposits at December 31, 2018 , were as follows: (in thousands) Less than $250,000 $250,000 and over Total Maturity Three months or less $ 101,415 $ 58,522 $ 159,937 Over three through six months 98,889 28,693 127,582 Over six through twelve months 147,865 41,685 189,550 Total due in 2019 $ 348,169 $ 128,900 $ 477,069 2020 62,821 12,926 75,747 2021 45,530 11,918 57,448 2022 16,124 2,584 18,708 2023 7,991 258 8,249 Thereafter 74 0 74 Total $ 480,709 $ 156,586 $ 637,295

Securities Sold Under Agreement

Securities Sold Under Agreements to Repurchase and Federal Funds Purchased	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Securities Sold Under Agreements to Repurchase and Federal Funds Purchased	Securities Sold Under Agreements to Repurchase and Federal Funds Purchased Information regarding securities sold under agreements to repurchase and Federal funds purchased is detailed in the following tables for the years ended December 31: Securities Sold Under Agreements to Repurchase 2018 2017 2016 (dollar amounts in thousands) Total outstanding at December 31 $ 81,842 $ 75,177 $ 69,062 Maximum month-end balance 81,842 80,326 125,063 Average balance during the year 63,472 64,888 99,622 Weighted average rate at December 31 0.22 % 0.23 % 0.88 % Average interest rate paid during the year 0.24 % 0.36 % 2.24 % Federal Funds Purchased Average balance during the year 0 0 0 Weighted average rate at December 31 N/A N/A N/A Average interest rate paid during the year 0.00 % 0.00 % 0.00 % Securities sold under agreements to repurchase (“repurchase agreements”) are secured borrowings that typically mature within thirty to ninety days, although the Company has entered into repurchase agreements with the Federal Home Loan Bank (“FHLB”) with longer maturities. The Company uses both retail and wholesale repurchase agreements. Retail repurchase agreements are arrangements with local customers of the Company, in which the Company agrees to sell securities to the customer with an agreement to repurchase those securities at a specified later date. Retail repurchase agreements totaled $81.8 million at December 31, 2018 . The Company had no outstanding wholesale repurchase agreements at December 31, 2018 . Securities sold under agreements to repurchase are stated at the amount of cash received in connection with the transaction. The Company may be required to provide additional collateral based on the fair value of the underlying securities. Federal funds purchased are short-term borrowings that typically mature within one to ninety days.

Other Borrowings

Other Borrowings	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Other Borrowings	Other Borrowings The following table summarized the Company’s borrowings as of December 31: (in thousands) 2018 2017 Overnight FHLB advances $ 647,075 $ 587,742 Term FHLB advances 425,000 475,000 Other 4,000 9,000 Total other borrowings $ 1,076,075 $ 1,071,742 The Company, through its subsidiary banks, had available line-of-credit agreements with correspondent banks permitting borrowings to a maximum of approximately $98.0 million at December 31, 2018 and $58.0 million at December 31, 2017 . There were no outstanding advances against those lines at December 31, 2018 and December 31, 2017 . Through its subsidiary banks, the Company has borrowing relationships with the FHLB, which provides secured borrowing capacity, subject to available collateral. The unused borrowing capacity on established lines with the FHLB was $1.0 billion at both December 31, 2018 and December 31, 2017 . As members of the FHLB, the Company’s subsidiary banks can use certain unencumbered residential and commercial real estate related assets and investment securities to secure borrowings from the FHLB. At December 31, 2018 , total unencumbered residential and commercial real estate related loans and investment securities pledged at the FHLB were $554.3 million . At December 31, 2018 , there were $647.1 million in overnight advances and $425.0 million in term advances with the FHLB, with a weighted average rate of 2.07% , compared to $587.7 million in overnight advances and $475.0 million in term advances at December 31, 2017 , with a weighted average rate of 1.53% . At December 31, 2018 , the term advances with the FHLB include $275.0 million which mature within one year and $150.0 million which mature in over one year. Maturities of advances due in over one year include $130.0 million in 2020 and $20.0 million in 2021 . The Company had no callable FHLB borrowings at December 31, 2018 . The Company has a $25 million line of credit with a bank. As of December 31, 2018 and 2017, there was $4.0 million and $9.0 million , respectively, outstanding on the line. The line matures in June 2019.

Trust Preferred Debentures

Trust Preferred Debentures	12 Months Ended
	Dec. 31, 2018
Trust Preferred Debentures
Trust Preferred Debentures	Trust Preferred Debentures The Company has three unconsolidated subsidiary trusts (“the Trusts”): Sleepy Hollow Capital Trust I, Leesport Capital Trust II, and Madison Statutory Trust I. The latter two were acquired in the acquisition of VIST Financial, while Sleepy Hollow Capital Trust I was acquired in a previous acquisition. The Company owns 100% of the common equity of each Trust. The Trusts were formed for the purpose of issuing Company-obligated mandatorily redeemable capital securities to third-party investors and investing the proceeds from the sale in junior subordinated debt securities (subordinated debt) issued by the Company, which are the sole assets of each Trust. Since third-party investors are the primary beneficiaries, the Trusts are not consolidated in the Company’s financial statements. Distributions on the preferred securities issued by the Trusts are payable quarterly at a rate per annum equal to the interest rate being earned by the Trusts on the debenture held by the Trusts and are recorded as interest expense in the consolidated financial statements. The preferred securities are subject to mandatory redemption, in whole or in part, upon repayment of the subordinated debt. The subordinated debt, net of the Company’s investment in the Trusts, qualifies as Tier 1 capital under the Board of Governors of the Federal Reserve System (FRB) guidelines. The Company has entered into agreements which, when taken collectively, fully and unconditionally guarantee the obligations under the preferred securities subject to the terms of each of the guarantees. The following table provides information relating to the Trusts as of December 31, 2018 : Description Issuance Date Par Amount Interest Rate Maturity Date Sleepy Hollow Capital Trust I August 2003 $4.0 million 3-month LIBOR plus 3.05% August 2033 Leesport Capital Trust II September 2002 $10.0 million 3-month LIBOR plus 3.45% September 2032 Madison Statutory Trust I June 2003 $5.0 million 3-month LIBOR plus 3.10% June 2033 Sleepy Hollow Capital Trust I In August 2003 , Sleepy Hollow Capital Trust I issued $4.0 million of floating rate (three-month LIBOR plus 305 basis points) trust preferred securities, which represent beneficial interests in the assets of the trust. The trust preferred securities will mature on August 2033 . Distributions on the trust preferred securities are payable quarterly in arrears on March 31, June 30, September 30 and December 31 of each year. Sleepy Hollow Capital Trust I also issued $0.1 million of common equity securities to the Company. The proceeds of the offering were used to acquire the Company’s subordinated debentures that are due concurrently with the trust preferred securities. Leesport Capital Trust II Leesport Capital Trust II, a Delaware statutory business trust, was formed on September 26, 2002 and issued 10.0 million of mandatory redeemable capital securities carrying a floating interest rate of three month LIBOR plus 3.45% . These debentures are the sole assets of the Trust. The terms of the junior subordinated debentures are the same as the terms of the capital securities. The obligations under the debentures constitute a full and unconditional guarantee by VIST Financial of the obligations of the Trust under the capital securities. These securities must be redeemed in September 2032 , but may be redeemed at anytime. The Company assumed the rights and obligations of VIST Financial pertaining to the Leesport Capital Trust II through the Company’s acquisition of VIST Financial in August 2012. Madison Statutory Trust I Madison Statutory Trust, a Connecticut statutory business trust, was formed on June 2003 and issued 5.0 million of mandatory redeemable capital securities carrying a floating interest rate of three month LIBOR plus 3.10% . These debentures are the sole assets of the Trust. The terms of the junior subordinated debentures are the same as the terms of the capital securities. The obligations under the debentures constitute a full and unconditional guarantee by VIST Financial of the obligations of the Trust under the capital securities. These securities must be redeemed in June 2033 , but may be redeemed at any time. The Company assumed the rights and obligations of VIST Financial pertaining to the Madison Statutory Trust I through the Company’s acquisition of VIST Financial in August 2012.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Employee Benefits Plans	Employee Benefit Plans The Company maintains a noncontributory defined-benefit plan (the "DB Pension Plan") and two noncontributory defined-contribution retirement plans (the "DC Retirement Plan" and "2015 DC Retirement Plan") which cover substantially all employees of the Company. The DB Pension Plan was closed to new employees at year-end 2009 and was frozen on July 31, 2015. The benefits under the DB Pension Plan are based on years of service, age and percentages of the employees' average final compensation. Assets of the Company's DB Pension Plan are invested in common and preferred stock, mutual funds and cash equivalents. At December 31, 2018 and 2017 , DB Pension Plan assets included 42,192 shares of Tompkins' common stock that had a fair value of $3.2 million and $3.4 million , respectively. The defined-contribution retirement plans cover substantially all employees of the Company who have reached the age of 21 and completed one year of service. For participants in these plans, the Company makes contributions to an account set up in the participant's name. The amount equals a percentage of pay and varies based on the participant's age, service, and tenure with the Company. The defined-contribution retirement plans offer the participant a wide range of investment alternatives from which to choose. Expenses related to the defined-contribution plans totaled $3.9 million in 2018 , $4.1 million in 2017 , and $3.8 million in 2016 . The Company maintains supplemental employee retirement plans (“SERPs”) for certain executives. On November 9, 2016, certain SERPs were amended and restated to reflect changes resulting from the freezing of the DB Pension Plan. The Company entered into additional SERP agreements with certain executives. The amount related to this change is reflected in the table below as an amendment in 2016. All benefits provided under the SERPs are unfunded and the Company makes payments to plan participants. The Company also maintains a post-retirement life and healthcare benefit plan (the “Life and Healthcare Plan”), which was amended in 2005. For employees commencing employment after January 1, 2005, the Company does not contribute towards post-retirement healthcare benefits. Retirees and employees who were eligible to retire when the Life and Healthcare Plan was amended were unaffected. Generally, all other employees were eligible for Health Reimbursement Accounts (“HRA”) with an initial balance equal to the amount of the Company’s estimated then current liability. Contributions to the plan are limited to an annual contribution of 4% of the total HRA balances. Employees, upon retirement, will be able to utilize their HRA for qualified health costs and deductibles. Effective January 1, 2017, the Company no longer allowed retirees under the age of 65 to participate in the employee health plan. The amount related to this change is reflected in the table below as an amendment in 2017. The Company engages independent, external actuaries to compute the amounts of liabilities and expenses relating to these plans, subject to the assumptions that the Company selects. The benefit obligation for these plans represents the liability of the Company for current and former employees, and is affected primarily by the following: service cost (benefits attributed to employee service during the period); interest cost (interest on the liability due to the passage of time); actuarial gains/losses (experience during the year different from that assumed and changes in plan assumptions); and benefits paid to participants. The following table sets forth the changes in the projected benefit obligation for the DB Pension Plan and SERPs and the accumulated post-retirement benefit obligation for the Life and Healthcare Plan; and the respective plan assets, and the plans’ funded status and amounts recognized in the Company’s Consolidated Statements of Condition at December 31, 2018 and 2017 (the measurement dates of the plans). DB Pension Plans Life and Healthcare Plan SERP Plan (in thousands) 2018 2017 2018 2017 2018 2017 Change in benefit obligation: Benefit obligation at beginning of year $ 82,748 $ 77,304 $ 8,995 $ 9,121 $ 26,142 $ 23,399 Service cost 0 0 212 192 160 166 Interest cost 2,508 2,501 270 268 833 852 Plan participants’ contributions 0 0 122 98 0 0 Amendments 0 0 0 (964 ) 0 0 Curtailments 0 0 0 0 0 0 Actuarial loss (gain) (2,324 ) 5,928 (1,337 ) 708 (2,987 ) 2,407 Benefits paid (3,243 ) (2,985 ) (405 ) (428 ) (609 ) (682 ) Benefit obligation at end of year $ 79,689 $ 82,748 $ 7,857 $ 8,995 $ 23,539 $ 26,142 Change in plan assets: Fair value of plan assets at beginning of year $ 80,154 $ 71,807 $ 0 $ 0 $ 0 $ 0 Actual return on plan assets (4,437 ) 9,582 0 0 0 0 Plan participants’ contributions 0 0 122 98 0 0 Employer contributions 0 1,750 283 330 609 682 Benefits paid (3,243 ) (2,985 ) (405 ) (428 ) (609 ) (682 ) Fair value of plan assets at end of year $ 72,474 $ 80,154 $ 0 $ 0 $ 0 $ 0 Unfunded status $ (7,215 ) $ (2,594 ) $ (7,857 ) $ (8,995 ) $ (23,539 ) $ (26,142 ) The accumulated benefit obligation for the DB Pension Plan for 2018 and 2017 was $79.7 million and $82.7 million , respectively. The accumulated benefit obligation for the Life and Healthcare Plan for 2018 and 2017 was $7.9 million and $9.0 million , respectively. The accumulated benefit obligation for the SERPs for 2018 and 2017 was $23.5 million and $26.1 million , respectively. The unfunded status of the DB Pension Plan, the Life and Healthcare Plan, and SERPs was recognized in other liabilities in the Consolidated Statement of Condition at December 31, 2018 in the amounts of $7.2 million , $7.9 million , and $23.5 million , respectively. The unfunded status of the DB Pension Plan, the Life and Healthcare Plan, and SERPs in the amount of $2.6 million , $9.0 million , and $26.1 million , respectively, was recognized in other liabilities in the Consolidated Statement of Condition at December 31, 2017 . Net periodic benefit cost and other comprehensive income (loss) includes the following components: (in thousands) DB Pension Plans Life and Healthcare Plan SERP Plan Components of net periodic benefit cost 2018 2017 2016 2018 2017 2016 2018 2017 2016 Service cost $ 0 $ 0 $ 0 $ 212 $ 192 $ 258 $ 160 $ 166 $ 171 Interest cost 2,508 2,501 2,473 270 268 283 833 852 832 Expected return on plan assets (5,648 ) (5,088 ) (4,844 ) 0 0 0 0 0 0 Amortization of prior service (credit) cost (10 ) (10 ) (15 ) (62 ) (62 ) 16 87 87 75 Recognized net actuarial loss 1,118 1,075 975 62 34 5 539 399 358 Net periodic benefit (credit) cost $ (2,032 ) $ (1,522 ) $ (1,411 ) $ 482 $ 432 $ 562 $ 1,619 $ 1,504 $ 1,436 Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss) Net actuarial loss (gain) $ 7,761 $ 1,434 $ 1,880 $ (1,337 ) $ 708 $ 210 $ (2,987 ) $ 2,407 $ 697 Recognized actuarial loss (1,118 ) (1,075 ) (975 ) (62 ) (34 ) (5 ) (539 ) (399 ) (358 ) Prior service credit 0 0 0 0 (964 ) 0 0 0 188 Recognized prior service cost (credit) 10 10 15 62 62 (16 ) (87 ) (87 ) (75 ) Recognized in other comprehensive income (loss) $ 6,653 $ 369 $ 920 $ (1,337 ) $ (228 ) $ 189 $ (3,613 ) $ 1,921 $ 452 Total recognized in net periodic benefit cost and other comprehensive income $ 4,621 $ (1,153 ) $ (491 ) $ (855 ) $ 204 $ 751 $ (1,994 ) $ 3,425 $ 1,888 Pre-tax amounts recognized as a component of accumulated other comprehensive income (loss) as of year-end that have not been recognized as a component of the Company’s combined net periodic benefit cost of the Company’s DB Pension Plan, Life and Healthcare Plan and SERPs are presented in the following table. (in thousands) DB Pension Plans Life and Healthcare Plan SERP Plan 2018 2017 2016 2018 2017 2016 2018 2017 2016 Net actuarial loss (gain) $ 46,603 $ 39,960 $ 39,601 $ 368 $ 1,767 $ 1,093 $ 5,560 $ 9,086 $ 7,077 Prior service cost (credit) (20 ) (30 ) (40 ) (606 ) (668 ) 235 514 602 689 Total $ 46,583 $ 39,930 $ 39,561 $ (238 ) $ 1,099 $ 1,328 $ 6,074 $ 9,688 $ 7,766 The pre-tax amounts included in accumulated other comprehensive income (loss) that are expected to be recognized in net periodic pension cost during the fiscal year ended December 31, 2019 are shown below. (in thousands) Pension Plans Life and Healthcare Plan SERP Plan Actuarial loss 1,305 0 286 Prior service cost (10 ) (62 ) 87 Total 1,295 (62 ) 373 Weighted-average assumptions used in accounting for the plans were as follows: (in thousands) DB Pension Plans Life and Healthcare Plan SERP Plan 2018 2017 2016 2018 2017 2016 2018 2017 2016 Discount Rates Benefit Cost for Plan Year 3.43 % 3.89 % 4.05 % 3.51 % 3.97 % 4.14 % 3.55 % 4.10 % 4.32 % Benefit Obligation at End of Plan Year 4.08 % 3.43 % 3.89 % 4.13 % 3.51 % 3.97 % 4.16 % 3.55 % 4.10 % Expected long-term return on plan assets 7.25 % 7.25 % 7.25 % N/A N/A N/A N/A N/A N/A Rate of compensation increase Benefit Cost for Plan Year N/A N/A N/A 5.00 % 5.00 % 5.00 % 5.00 % 5.00 % 5.00 % Benefit Obligation at End of Plan Year N/A N/A N/A 4.00 % 5.00 % 5.00 % 5.00 % 5.00 % 5.00 % Tompkins offers post-retirement life and healthcare benefits, although as previously mentioned, has discontinued providing post-retirement healthcare to participants hired after 2004. The weighted average annual assumed rate of increase in the per capita cost of covered benefits (the health care cost trend rate) was 5.9% beginning in 2018 and is assumed to decrease gradually to 4.5% in 2027 and beyond. A 1% increase in the assumed health care cost trend rate would increase service and interest costs by approximately $1,300 and increase the Company’s benefit obligation by approximately $39,000 . A 1% decrease in the assumed health care cost trend rate, would decrease service and interest costs by approximately $1,100 and decrease the Company’s benefit obligation by approximately $35,000 . To develop the expected long-term rate of return on assets assumption for the DB Pension Plan, the Company considered the historical returns and the future expectations for returns for each asset class, as well as target asset allocations of the pension portfolio. Based on this analysis, the Company selected 7.25% as the long-term rate of return on asset assumption. The discount rates used to determine the Company’s DB Pension Plan and other post-retirement benefit obligations as of December 31, 2018 , and December 31, 2017 , were determined by matching estimated benefit cash flows to a yield curve derived from Citigroup’s regular bond yield at December 31, 2018 and December 31, 2017 . Based on the Company’s anticipation of future experience under the DB Pension Plan, the mortality tables used to determine future benefit obligations under the plan were updated as of December 31, 2018 to the RP 2014 Total Employee and Healthy Annuitant Mortality Tables rolled back to 2006 and projected with Mortality Improvement Scale MP 2018. The Company updated this assumption based on the new improvement table released by The Society of Actuaries in October 2018 . The appropriateness of the assumptions is reviewed annually. Cash Flows Plan assets are amounts that have been segregated and restricted to provide benefits, and include amounts contributed by the Company and amounts earned from investing contributions, less benefits paid. The Company funds the cost of the SERPs and the Life and Healthcare Plan benefits on a pay-as-you-go basis. The benefits as of December 31, 2018 , expected to be paid in each of the next five fiscal years, and in the aggregate for the five fiscal years thereafter were as follows: (in thousands) DB Pension Plans Life and Healthcare Plan SERP Plan 2019 $ 3,950 $ 529 $ 673 2020 4,067 477 697 2021 4,210 430 688 2022 4,280 416 740 2023 4,463 439 845 2024-2028 23,686 2,162 4,475 Total $ 44,656 $ 4,453 $ 8,118 Plan Assets The Company’s DB Pension Plan’s weighted-average asset allocations at December 31, 2018 and 2017 , respectively, by asset category are as follows: 2018 2017 Equity securities 65 % 65 % Debt securities 34 % 34 % Other 1 % 1 % Total Allocation 100 % 100 % It is the policy of the Trustees to invest the Pension Trust Fund (the “Fund”) for total return. The Trustees seek the maximum return consistent with the interests of the participants and beneficiaries and prudent investment management. The management of the Fund’s assets is in compliance with the guidelines established in the Company’s Pension Plan and Trust Investment Policy, which is reviewed and approved annually by the Tompkins Board of Directors, and the Pension Investment Review Committee. The intention is for the Fund to be prudently diversified. The Fund’s investments will be invested among the fixed income, equity and cash equivalent sectors. The pension committee will designate minimum and maximum positions in any of the sectors. In no case shall more than 10% of the Fund assets consist of qualified securities or real estate of the Company. Unless otherwise approved by the Trustees, the following investments are prohibited: 1. Restricted stock, private placements, short positions, calls, puts, or margin transactions; 2. Commodities, oil and gas properties, real estate properties, or 3. Any investment that would constitute a prohibited transaction as described in the Employee Retirement Income Security Act of 1974 (“ERISA”), section 407, 29 U.S.C. 1106. In general, the investment in debt securities is limited to readily marketable debt securities having a Standard & Poor’s rating of “A” or Moody’s rating of “A”, securities of, or guaranteed by the United States Government or its agencies, or obligations of banks or their holding companies that are rated in the three highest ratings assigned by Fitch Investor Service, Inc. In addition, investments in equity securities must be listed on the NYSE or traded on the national Over The Counter market or listed on the NASDAQ. Cash equivalents generally may be United States Treasury obligations, commercial paper having a Standard & Poor’s rating of “A-1” or Moody’s National Credit Officer rating of “P-1”or higher. The major categories of assets in the Company’s DB Pension Plan as of year-end are presented in the following table. Assets are segregated by the level of valuation inputs within the fair value hierarchy established by ASC Topic 820 utilized to measure fair value (see Note 19-Fair Value Measurements). Fair Value Measurements December 31, 2018 (in thousands) Fair Value 2018 (Level 1) (Level 2) (Level 3) Cash and cash equivalents $ 1,018 $ 1,018 $ 0 $ 0 Common stocks 20,648 20,648 0 0 Mutual funds 50,808 50,808 0 0 Total Fair Value of Plan Assets $ 72,474 $ 72,474 $ 0 $ 0 Fair Value Measurements December 31, 2017 (in thousands) Fair Value 2017 (Level 1) (Level 2) (Level 3) Cash and cash equivalents $ 448 $ 448 $ 0 $ 0 Common stocks 24,994 24,994 0 0 Mutual funds 54,712 54,712 0 0 Total Fair Value of Plan Assets $ 80,154 $ 80,154 $ 0 $ 0 The Company determines the fair value for its pension plan assets using an independent pricing service. The pricing service uses a variety of techniques to determine fair value, including market maker bids, quotes and pricing models. Inputs to the model include recent trades, benchmark interest rates, spreads, and actual and projected cash flows. Based on the inputs used by our independent pricing services, the Company identifies the appropriate level within the fair value hierarchy to report these fair values. U.S. Treasury securities, common stocks and mutual funds are considered Level 1 based on quoted prices in active markets. The Company has an Employee Stock Ownership Plan (ESOP) and a 401(k) Investment and Stock Ownership Plan (ISOP) covering substantially all employees of the Company. The ESOP allows for Company contributions in the form of common stock of the Company. Annually, the Tompkins Board of Directors determines a profit-sharing payout to its employees in accordance with a performance-based formula. A percentage of the approved amount is paid in Company common stock into the ESOP. Contributions are limited to a maximum amount as stipulated in the ESOP. The remaining percentage is either paid out in cash or deferred into the ISOP at the direction of the employee. Compensation expense related to the profit-sharing totaled $4.9 million in 2018 , $5.8 million in 2017 , and $4.9 million in 2016 . Under the ISOP, employees may contribute a percentage of their eligible compensation with a Company match of such contributions up to a maximum match of 4% . Participation in the 401(k) Plan is contingent upon certain age and service requirements. The Company’s expense associated with these matching provisions was $2.6 million in 2018 , $2.5 million in 2017 , and $2.4 million in 2016 . Life insurance benefits are provided to certain officers of the Company. In connection with these policies, the Company reflects life insurance assets on its Consolidated Statements of Condition of $81.9 million at December 31, 2018 , and $80.1 million at December 31, 2017 . The insurance is carried at its cash surrender value on the Consolidated Statements of Condition. Increases in the cash surrender value of the insurance are reflected as noninterest income, net of any related mortality expense. The Company provides split dollar life insurance benefits to certain employees. The plan is unfunded and the estimated liability of the plan of $1.5 million and $1.5 million is recorded in other liabilities in the Consolidated Statements of Condition at December 31, 2018 and 2017 , respectively. Compensation expense related to the split dollar life insurance was approximately $52,000 in 2018 and $115,000 in 2017 .

Stock Plans and Stock Based Com

Stock Plans and Stock Based Compensation	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Plans and Stock Based Compensation	Stock Plans and Stock Based Compensation Under the Tompkins Financial Corporation 2009 Equity Plan (“2009 Equity Plan”), the Company may grant incentive stock options, stock appreciation rights ("SARs"), shares of restricted stock and restricted stock units covering up to 1,602,000 shares of the Company's common stock to certain officers, employees, and nonemployee directors. Stock options and SARs are granted at an exercise price equal to the stock’s fair value at the date of grant, may not have a term in excess of ten years, and have vesting periods that range between one and seven years from the grant date. Restricted stock awards have vesting periods that range between five and seven years from grant date, and have grant date fair values that equal the closing price of the Company’s common stock on grant date. Prior to the adoption of the 2009 Equity Plan, the Company had similar stock option plans, which remain in effect solely with respect to unexercised options issued under these plans. The Company granted 65,785 equity awards to its employees in 2018 , consisting of 65,785 shares of restricted stock. The Company granted 59,333 equity awards to its employees in 2017 , consisting of 59,333 shares of restricted stock. The Company granted 73,716 equity awards to its employees in 2016 , consisting of 53,770 shares of restricted stock, and 19,946 SARs. The following table presents the activity related to stock options and SARs under all plans for the year ended December 2018 . Number of Shares/Rights Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Outstanding at January 1, 2018 269,506 $ 47.34 Granted 0 0.00 Exercised (33,745 ) 41.22 Forfeited (10,386 ) 52.53 Outstanding at December 31, 2018 225,375 $ 48.02 4.56 $ 6,118,933 Exercisable at December 31, 2018 139,483 $ 44.06 3.56 $ 4,326,073 Total stock-based compensation expense for stock options and SARs was $304,000 in 2018 , $367,000 in 2017 , and $476,000 in 2016 . As of December 31, 2018 , unrecognized compensation cost related to unvested stock options and SARs totaled $0.6 million . The cost is expected to be recognized over a weighted average period of 3.0 years . Net cash proceeds, tax benefits and intrinsic value related to total stock options, SARs, and restricted stock exercised is as follows: (in thousands) 2018 2017 2016 Proceeds from stock option exercises $ (540 ) $ (641 ) $ (806 ) Tax benefits related to stock option exercises 680 1,634 1,433 Intrinsic value of stock option exercises 1,447 3,139 3,718 The Company uses the Black-Scholes option-valuation model to determine the fair value of incentive stock options and SARs at the date of grant. The valuation model estimates fair value based on the assumptions listed in the table below. The risk-free rate is the interest rate available on zero-coupon U.S. Treasury instruments with a remaining term equal to the expected term of the share option at the time of grant. The expected dividend yield is based on the dividend trends and the market price of the Company’s stock price at grant. Volatility is largely based on historical volatility of the Company’s stock price. The expected term is based upon historical experience of employee exercises and terminations as the vesting term of the grants. The fair values of the grants are expensed over the vesting periods. There were no stock options or SARs granted in 2018 or 2017. 2018 2017 2016 Weighted per share average fair value at grant date N/A N/A $ 12.88 Risk-free interest rate N/A N/A 1.57 % Expected dividend yield N/A N/A 3.00 % Volatility N/A N/A 24.58 % Expected life (years) N/A N/A 5.5 December 31, 2018 Options and SARs Outstanding Options and SARs Exercisable Range of Exercise Prices Number Outstanding Weighted Average Remaining Contractual Life Weighted Average Exercise Price Number Exercisable Weighted Average Exercise Price $35.71-37.50 42,598 2.62 $ 37.00 42,598 $ 37.00 $37.51-41.00 33,623 4.27 $ 40.60 19,444 $ 40.60 $41.01-50.00 90,478 3.93 $ 46.43 59,900 $ 45.01 $50.01-76.90 58,454 7.10 $ 62.64 17,485 $ 61.75 $76.91-86.18 222 7.89 $ 86.18 56 $ 86.18 225,375 4.56 $ 48.02 139,483 $ 44.06 The following table presents activity related to restricted stock awards for the twelve months ended December 31, 2018 . Number of Shares Weighted Average Fair Value Unvested at January 1, 2018 261,373 $ 61.32 Granted 65,785 75.44 Vested (53,667 ) 53.71 Forfeited (18,252 ) 61.81 Unvested at December 31, 2018 255,239 $ 66.52 The Company granted 65,785 restricted stock awards in 2018 at an average grant date fair value of $75.44 . The Company granted 59,333 restricted stock awards in 2017 at an average grant date fair value of $79.51 . The Company granted 53,770 restricted stock awards in 2016 at an average grant date fair value of $76.93 . The grant date fair values were the closing prices of the Company’s common stock on the grant dates. The Company recognized stock-based compensation related to restricted stock awards of $3.2 million in 2018 , $2.6 million in 2017 , and $1.8 million in 2016 . Unrecognized compensation costs related to restricted stock awards totaled $13.3 million at December 31, 2018 and will be recognized over 3.8 years on a weighted average basis.

Other Noninterest Income and Ex

Other Noninterest Income and Expense	12 Months Ended
	Dec. 31, 2018
Other Income and Expenses [Abstract]
Other Noninterest Income and Expense	Other Noninterest Income and Expense Other income and operating expense totals are presented in the table below. Components of these totals exceeding 1% , and other significant items, of the aggregate of total other noninterest income and total other noninterest expenses for any of the years presented below are stated separately. Year ended December 31, (in thousands) 2018 2017 2016 NONINTEREST INCOME Other service charges $ 3,263 $ 2,982 $ 2,671 Increase in cash surrender value of corporate owned life insurance 1,818 2,196 2,106 Net gain on sale of loans 458 50 95 Gain (loss) on sale of fixed assets 2,954 30 (7 ) Other miscellaneous income 4,637 2,373 1,426 Total other noninterest income $ 13,130 $ 7,631 $ 6,291 NONINTEREST EXPENSES Marketing expense $ 5,495 $ 5,013 $ 5,087 Professional fees 8,564 5,725 5,446 Technology expense 10,099 8,332 7,011 Cardholder expense 3,277 3,391 2,503 Other miscellaneous expenses 20,868 20,537 17,187 Total other noninterest expenses $ 48,303 $ 42,998 $ 37,234

Revenue Recognition

Revenue Recognition	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition On January 1, 2018, the Company adopted ASU No. 2014-09 “Revenue from Contracts with Customers” (ASC 606) and all subsequent ASUs that modified ASC 606. As stated in Note 1 - "Summary of Significant Accounting Policies ," results for reporting periods beginning after January 1, 2018 are presented under ASC 606, while prior period amounts were not adjusted and continue to be reported in accordance with our historic accounting under ASC 605. The Company recorded a net increase to beginning retained earnings of $1.8 million as of January 1, 2018 due to the cumulative impact of adopting ASC 606. The impact to beginning retained earnings was primarily driven by the recognition of contingency income related to our insurance business segment. Under ASC 606, the Company made any necessary revisions to its policies related to the new revenue recognition guidance. In general, for revenue not associated with financial instruments, guarantees and lease contracts, we apply the following steps when recognizing revenue from contracts with customers: (i) identify the contract, (ii) identify the performance obligations, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations and (v) recognize revenue when performance obligation is satisfied. Our contracts with customers are generally short term in nature, typically due within one year or less or cancellable by us or our customer upon a short notice period. Performance obligations for our customer contracts are generally satisfied at a single point in time, typically when the transaction is complete, or over time. For performance obligations satisfied over time, we primarily use the output method, directly measuring the value of the products/services transferred to the customer, to determine when performance obligations have been satisfied. We typically receive payment from customers and recognize revenue concurrent with the satisfaction of our performance obligations. In most cases, this occurs within a single financial reporting period. For payments received in advance of the satisfaction of performance obligations, revenue recognition is deferred until such time the performance obligations have been satisfied. In cases where we have not received payment despite satisfaction of our performance obligations, we accrue an estimate of the amount due in the period our performance obligations have been satisfied. For contracts with variable components, only amounts for which collection is probable are accrued. We generally act in a principal capacity, on our own behalf, in most of our contracts with customers. In such transactions, we recognize revenue and the related costs to provide our services on a gross basis in our financial statements. In some cases, we act in an agent capacity, deriving revenue through assisting other entities in transactions with our customers. In such transactions, we recognized revenue and the related costs to provide our services on a net basis in our financial statements. These transactions primarily relate to insurance and brokerage commissions. ASC 606 does not apply to revenue associated with financial instruments, including revenue from loans and securities. In addition, certain noninterest income streams such as fees associated with mortgage servicing rights, financial guarantees, derivatives, and certain credit card fees are also not in scope of the new guidance. ASC 606 is applicable to noninterest revenue streams such as trust and asset management income, deposit related fees, interchange fees, merchant income, and annuity and insurance commissions. However, the recognition of these revenue streams did not change significantly upon adoption of ASC 606. Insurance Commissions and Fees Fees are earned upon the effective date of bound coverage, as no significant performance obligation remains after coverage is bound. As the Company has historically recognized revenue in this manner, with the noted exception related to installment billing discussed below, the adoption of ASC 606 will not significantly impact the revenue from this source on a quarterly or annual basis. Installment billing - Agency Bill Prior to the adoption of ASC 606, commission revenue on policies billed in installments were recognized on the latter of the policy effective date or the date that the premium was billed to the client. As a result of the adoption of ASC 606, revenue associated with the issuance of policies will be recognized upon the effective date of the associated policy regardless of the billing method, meaning that commission revenues billed on an installment basis will be now recognized earlier than they had been previously. Revenue will be accrued based upon the completion of the performance obligation creating a current asset for the unbilled revenue until such time as an invoice is generated, typically not to exceed twelve months. The Company does not expect the overall impact of these changes to be significant, but it will result in slight variances from quarter to quarter. Contingent commissions Prior to the adoption of ASC 606, revenue that was not fixed and determinable because a contingency exists was not recognized until the contingency was resolved. Under ASC 606, the Company must use its judgment to estimate the amount of consideration that will be received such that a significant reversal of revenue is not probable. Contingent commissions represent a form of variable consideration associated with the same performance obligation, which is the placement of coverage, for which we earn core commissions. In connection with the new standard, contingent commissions will be estimated with an appropriate constraint applied and accrued relative to the recognition of the corresponding core commissions. The resulting effect on the timing of recognition of contingent commissions will more closely follow a similar pattern as our core commissions with true-ups recognized when payments are received or as additional information that affects the estimate becomes available. Refund of commissions The contract with the insurance carrier dictates commissions paid to the Company shall be refunded to the carrier upon cancellation by the policyholder. As a result, the Company has established a liability for the estimated amount of commission for which the Company does not expect to be entitled, and corresponding reduction to the gross commission received or receivable. The refund liability will be updated at the end of each reporting period for changes in circumstances. Trust & Asset Management Trust and asset management income is primarily comprised of fees earned from the management and administration of trusts and other customer assets. The Company’s performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the month-end market value of the assets under management and the applicable fee rate. Payment is generally received a few days after month end through a direct charge to customers’ accounts. The Company does not earn performance-based incentives. Optional services such as real estate sales and tax return preparation services are also available to existing trust and asset management customers. The Company’s performance obligation for these transactional-based services is generally satisfied, and related revenue recognized, at a point in time (i.e., as incurred). Payment is received shortly after services are rendered. Mutual Fund & Investment Income Mutual fund and investment income consists of other recurring revenue streams such as commissions from sales of mutual funds and other investments, investment advisory fees from the Company’s Strategic Asset Management Services (SAM) wealth management product. Commissions from the sale of mutual funds and other investments are recognized on trade date, which is when the Company has satisfied its performance obligation. The Company also receives periodic service fees (i.e., trailers) from mutual fund companies typically based on a percentage of net asset value. Trailer revenue is recorded over time, usually monthly or quarterly, as net asset value is determined. Investment advisor fees from the wealth management product is earned over time and based on an annual percentage rate of the net asset value. The investment advisor fees are charged to the customer’s account in advance on the first month of the quarter, and the revenue is recognized over the following three-month period. The Company does engage a third party, LPL Financial, LLC (LPL), to satisfy part of this performance obligation, and therefore this income is reported net of any corresponding expenses paid to LPL. Service Charges on Deposit Accounts Service charges on deposit accounts consist of account analysis fees (i.e., net fees earned on analyzed business and public checking accounts), monthly service fees, check orders, and other deposit account related fees. The Company’s performance obligation for account analysis fees and monthly service fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Check orders and other deposit account related fees are largely transactional based, and therefore, the Company’s performance obligation is satisfied and related revenue recognized, at a point in time. Payment for service charges on deposit accounts is primarily received immediately or in the following month through a direct charge to customers’ accounts. Card Services Income Fees, exchange, and other service charges are primarily comprised of debit and credit card income, ATM fees, merchant services income, and other service charges. Debit and credit card income is primarily comprised of interchange fees earned whenever the Company’s debit and credit cards are processed through card payment networks such as MasterCard. ATM fees are primarily generated when a Company cardholder uses a non-Company ATM or a non-Company cardholder uses a Company ATM. Merchant services income mainly represents fees charged to merchants to process their debit and credit card transactions, in addition to account management fees. The Company’s performance obligation for fees and exchange are largely satisfied, and related revenue recognized, when the services are rendered or upon completion. Payment is typically received immediately or in the following month. Other Other service charges include revenue from processing wire and ACH transfers, lock box service and safe deposit box rental. Both wire transfer fees and lock box services are charged on per item basis. Wire and ACH transfer fees are charged at the time of transfer and charged directly to the customer account. Lock box customers are billed monthly and payments are received in the following month through a direct charge to customers’ accounts. Safe deposit box rental fees are charged to the customer on an annual basis and recognized upon receipt of payment. The Company determined that since rentals and renewals occur fairly consistently over time, revenue is recognized on a basis consistent with the duration of the performance obligation. The following presents noninterest income, segregated by revenue streams in-scope and out-of-scope of ASC 606, for the year ended December 31, 2018 and 2017 . Year Ended (dollars in thousands) 12/31/2018 12/31/2017 Noninterest Income In-scope of Topic 606: Commissions and Fees $ 27,272 $ 26,412 Installment Billing 6 0 Refund of Commissions (29 ) 0 Contract Liabilities/Deferred Revenue (181 ) (253 ) Contingent commissions 2,301 2,619 Subtotal Insurance Revenues 29,369 28,778 Trust and Asset Management 11,848 10,049 Mutual Fund & Investment Income 5,440 5,616 Subtotal Investment Service Income 17,288 15,665 Service Charges on Deposit Accounts 8,435 8,437 Card Services Income 9,693 9,100 Other 1,176 1,111 Noninterest Income (in-scope of ASC 606) 65,961 63,091 Noninterest Income (out-of-scope of ASC 606) 1 11,488 6,113 Total Noninterest Income $ 77,449 $ 69,204 1 The period ending December 31, 2018 includes approximately $2.9 million related to gain on sale of fixed assets. Contract Balances Receivables primarily consist of amounts due for insurance and wealth management services performed for which the Company's performance obligations have been fully satisfied. Receivables amounted to $4.3 million and $1.8 million , respectively, at December 31, 2018 , compared to $4.0 million and $1.9 million , respectively, at December 31, 2017 and were included in other assets in the audited Consolidated Statements of Condition. A contract asset balance occurs when an entity performs a service for a customer before the customer pays consideration (resulting in a contract receivable) or before payment is due (resulting in a contract asset). The Company’s noninterest revenue streams, excluding some insurance commissions and fees, are largely based on transactional activity, or standard month-end revenue accruals such as asset management fees based on month-end market values. Consideration is often received immediately or shortly after the Company satisfies its performance obligation and revenue is recognized. As of December 31, 2018 and December 31, 2017 , the Company did not have any significant contract balances related to this transactional activity. The transaction price for an insurance entity often includes an element of consideration that is variable or contingent on the outcome of future events, such as volume of business, growth and claims experience. Consideration for this “contingent revenue” is typically paid during the first quarter of the subsequent year. ASC 606 states that variable consideration be estimated using a method that best predicts the amount of consideration to which the entity will be entitled using the approach that it expects will best predict the amount of consideration to which the entity will be entitled. This assessment would consider the terms of the contract and all reasonably available information, including historical, current, and forecast information. As of December 31, 2018 and at the date of adoption of ASC 606, contract assets related to this contingent income were $1.9 million and $2.4 million , respectively. The decrease in the contract asset balance during the year ended December 31, 2018 is primarily a result of detrimental claims experience throughout the year. A contract liability balance is an entity’s obligation to transfer a service to a customer for which the entity has already received payment (or payment is due) from the customer. The Company often receives cash payments from customers in advance of the Company’s performance resulting in contract liabilities. These contract liabilities are classified current or long-term in the Consolidated Condensed Balance Sheet based on the timing of when the Company expects to recognize revenue. As of December 31, 2018 and at the date of adoption of ASC 606, contract liabilities were $1.8 million and $1.7 million , respectively, and are included within accrued expenses in the accompanying Consolidated Condensed Statements of Condition. The liabilities include premiums due to insurance carriers in addition to unearned commission revenue. The increase in the contract liability balance during the year ended December 31, 2018 is primarily as a result of billings and cash payments received in advance of satisfying performance obligations, offset by insurance premiums and revenue recognized during the period that was included in the contract liability balance at the date of adoption. The adoption of ASC 606 did not create a change in accounting for insurance commissions and fees as they relate to contract liabilities, however the company did eliminate the practice of deferring revenue on its larger accounts over the course of the policy period. Contract Acquisition Costs In connection with the adoption of ASC 606, an entity is required to capitalize, and subsequently amortize into expense, certain incremental costs of obtaining a contract with a customer if these costs are expected to be recovered. The incremental costs of obtaining a contract are those costs that an entity incurs to obtain a contract with a customer that it would not have incurred if the contract had not been obtained (for example, sales commission). The Company utilizes the practical expedient which allows entities to immediately expense contract acquisition costs when the asset that would have resulted from capitalizing these costs would have been amortized in one year or less . Upon adoption of ASC 606, the Company did not capitalize any contract acquisition costs.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The income tax expense (benefit) attributable to income from operations is summarized as follows: (in thousands) Current Deferred Total 2018 Federal $ 16,391 $ 2,281 $ 18,672 State 3,060 73 3,133 Total $ 19,451 $ 2,354 $ 21,805 2017 Federal $ 26,860 $ 14,749 $ 41,609 State 1,162 (151 ) 1,011 Total $ 28,022 $ 14,598 $ 42,620 2016 Federal $ 22,943 $ 1,551 $ 24,494 State 2,243 308 2,551 Total $ 25,186 $ 1,859 $ 27,045 The primary reasons for the differences between income tax expense and the amount computed by applying the statutory federal income tax rate to earnings are as follows: 2018 2017 2016 Statutory federal income tax rate 21.0 % 35.0 % 35.0 % State income taxes, net of federal benefit 2.4 0.7 1.9 Tax exempt income (1.5 ) (2.6 ) (2.7 ) Excess benefits from equity-based compensation (0.6 ) (1.6 ) (1.4 ) Bank-owned life insurance income (0.4 ) (0.8 ) (0.8 ) Federal tax credit (0.6 ) (2.0 ) (0.4 ) Enactment of Federal tax reform 0.0 15.7 0.0 All other 0.6 0.4 (0.3 ) Total 20.9 % 44.8 % 31.3 % Deferred income taxes reflect the net tax effects of temporary differences between the carrying amount of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of the Company’s deferred tax assets and liabilities as of December 31 were as follows: (in thousands) 2018 2017 2016 Deferred tax assets: Allowance for loan and lease losses $ 10,676 $ 9,577 $ 13,737 Interest income on nonperforming loans 384 417 214 Compensation and benefits 10,885 10,406 14,504 Purchase accounting adjustments 0 0 527 Liabilities held at fair value 12 3 1 Other 2,333 2,515 3,088 Total $ 24,290 $ 22,918 $ 32,071 Deferred tax liabilities: Prepaid pension 8,700 8,140 11,439 Depreciation 4,193 2,686 3,006 Intangibles 971 776 882 Purchase accounting adjustments 328 194 0 Leases 1,790 1,145 1,687 Other 1,459 774 1,214 Total deferred tax liabilities $ 17,441 $ 13,715 $ 18,228 Net deferred tax asset at year-end $ 6,849 $ 9,203 $ 13,843 Net deferred tax asset at beginning of year $ 9,203 $ 13,843 $ 16,185 Decrease in net deferred tax asset (2,354 ) (4,640 ) (2,342 ) Purchase accounting adjustments, net 0 0 (483 ) Federal tax reform remeasurement of AOCI deferred tax asset $ 0 $ 9,958 $ 0 Deferred tax expense $ 2,354 $ 14,598 $ 1,859 The above analysis does not include recorded deferred tax assets (liabilities) of $7.5 million and $4.3 million as of December 31, 2018 and 2017 , respectively, related to net unrealized holdings losses/(gains) in the available-for-sale securities portfolio. In addition, the analysis excludes the recorded deferred tax assets of $12.9 million and $12.6 million , as of December 31, 2018 and 2017 , respectively, related to employee benefit plans. However, the $10.0 million included above in the line 'Federal tax reform remeasurement of AOCI deferred tax asset' reflects the remeasurement of the net deferred taxes related to unrealized holding losses/(gains) in the available-for-sale portfolio and employee benefit plans as of December 31, 2017. Realization of deferred tax assets is dependent upon the generation of future taxable income or the existence of sufficient taxable income. A valuation allowance is provided when it is more likely than not that some portion of the deferred tax assets will not be realized. In assessing the need for a valuation allowance, management considers the scheduled reversal of the deferred tax liabilities, the level of historical taxable income, and the projected future taxable income over the periods in which the temporary differences comprising the deferred tax assets will be deductible. Based on its assessment, management determined that no valuation allowance is necessary at December 31, 2018 and 2017 . At December 31, 2018 and December 31, 2017 , the Company had no ASC 740-10 unrecognized tax benefits. The Company does not expect the total amount of unrecognized tax benefits to significantly increase within the next twelve months. The Company recognizes interest and penalties on unrecognized tax benefits in income tax expense in its Consolidated Statements of Income. The Company is subject to U.S. federal income tax and income tax in New York and various state jurisdictions. All tax years ending after December 31, 2014 are open to examination by the taxing authorities. On December 22, 2017, H.R.1, commonly known as the Tax Cuts and Jobs Act (the "Tax Act") was signed into law. The Tax Act includes many provisions that affect the Company's income tax expense, including reducing our corporate federal tax rate from 35% to 21% effective January 1, 2018. As a result of the rate reduction, the Company was required to re-measure, through income tax expense, our deferred tax assets and liabilities using the enacted rate at which the Company expects them to be recovered or settled. The re-measurement of the Company's net deferred tax asset resulted in additional 2017 income tax expense of $14.9 million . Also, on December 22, 2017, the U.S. Securities and Exchange Commission ("SEC") released Staff Accounting Bulletin No. 118 ("SAB 118") to address any uncertainty or diversity of views in practice in accounting for the income tax effects of the Tax Act in situations where a registrant does not have the necessary information available, prepared, or analyzed in reasonable detail to complete this accounting in the reporting period that includes the enactment date. SAB 118 allows for a measurement period not to extend beyond one year from the Tax Act's enactment date to complete the necessary accounting. In 2017, the Company recorded provisional amounts of deferred income taxes using reasonable estimates in areas where information necessary to complete the accounting was not available, prepared, or analyzed. One area was the Company's deferred tax liability for temporary differences between the tax and financial reporting bases of fixed assets principally due to the accelerated depreciation under the Tax Act which allows for full expensing of qualified property purchased and placed in service after September 27, 2017. The Company completed the calculations for the fixed assets with the completion of its 2017 tax returns and completed our analysis of the Internal Revenue Code Section 162(m), which, generally, limits the annual deduction for certain compensation paid to certain employees to $1.0 million, after further guidance was issued. The impact of the completed calculations to the re-measurement of the deferred taxes resulted in an immaterial change and the analysis of the Section 162(m) rules resulted in no adjustment.

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2018
Stockholders' Equity Note [Abstract]
Other Comprehensive Income (Loss)	Other Comprehensive Income (Loss) The tax effect allocated to each component of other comprehensive income (loss) were as follows: December 31, 2018 Before-Tax Amount Tax (Expense) Benefit Net of Tax Available-for-sale securities: (in thousands) Change in net unrealized loss during the period $ (14,550 ) $ 3,569 $ (10,981 ) Reclassification adjustment for net realized loss on sale included in available-for-sale securities 440 (108 ) 332 Net unrealized losses (14,110 ) 3,461 (10,649 ) Employee benefit plans: Net retirement plan loss (3,437 ) 843 (2,594 ) Amortization of net retirement plan actuarial gain 1,719 (421 ) 1,298 Amortization of net retirement plan prior service (cost) credit 15 (4 ) 11 Employee benefit plans (1,703 ) 418 (1,285 ) Other comprehensive loss $ (15,813 ) $ 3,879 $ (11,934 ) December 31, 2017 Before-Tax Amount Tax (Expense) Benefit Net of Tax Available-for-sale securities: (in thousands) Change in net unrealized loss during the period $ (4,442 ) $ 1,761 $ (2,681 ) Reclassification adjustment for net realized loss on sale included in available-for-sale securities 407 (163 ) 244 Net unrealized losses (4,035 ) 1,598 (2,437 ) Employee benefit plans: Net retirement plan loss (4,549 ) 1,115 (3,434 ) Net retirement plan prior service credit 964 (236 ) 728 Amortization of net retirement plan actuarial gain 1,508 (603 ) 905 Amortization of net retirement plan prior service (cost) credit 15 (6 ) 9 Employee benefit plans (2,062 ) 270 (1,792 ) Other comprehensive loss $ (6,097 ) $ 1,868 $ (4,229 ) December 31, 2016 Before-Tax Amount Tax (Expense) Benefit Net of Tax Available-for-sale securities: (in thousands) Change in net unrealized loss during the period $ (7,689 ) $ 3,074 $ (4,615 ) Reclassification adjustment for net realized gain on sale included in available-for-sale securities (926 ) 370 (556 ) Net unrealized losses (8,615 ) 3,444 (5,171 ) Employee benefit plans: Net retirement plan loss (2,787 ) 1,114 (1,673 ) Net retirement plan prior service credit (188 ) 75 (113 ) Amortization of net retirement plan actuarial loss 1,338 (535 ) 803 Amortization of net retirement plan prior service (cost) credit 76 (30 ) 46 Employee benefit plans (1,561 ) 624 (937 ) Other comprehensive loss $ (10,176 ) $ 4,068 $ (6,108 ) The following table presents the activity in our accumulated other comprehensive loss for the periods indicated: (in thousands) Available-for-Sale Employee Benefit Plans Accumulated Other Balance at January 1, 2016 $ (2,744 ) $ (28,257 ) $ (31,001 ) Other comprehensive loss (5,171 ) (937 ) (6,108 ) Balance at December 31, 2016 $ (7,915 ) $ (29,194 ) $ (37,109 ) Balance at January 1, 2017 (7,915 ) (29,194 ) (37,109 ) Other comprehensive loss (2,437 ) (1,792 ) (4,229 ) Balance at reclassification due to adoption of ASU 2018-02 $ (2,653 ) $ (7,305 ) $ (9,958 ) Balance at December 31, 2017 (13,005 ) (38,291 ) (51,296 ) Balance at January 1, 2018 (13,005 ) (38,291 ) (51,296 ) Other comprehensive loss (10,649 ) (1,285 ) (11,934 ) Adoption of ASU 2016-01 65 0 65 Balance at December 31, 2018 $ (23,589 ) $ (39,576 ) $ (63,165 ) December 31, 2018 Details about Accumulated other Comprehensive Income Components (in thousands) Amount Reclassified from Accumulated Other Comprehensive (Loss) 1 Affected Line Item in the Statement Where Net Income is Presented Available-for-sale securities: Unrealized gains and losses on available-for-sale securities $ (440 ) Net (loss) gain on securities transactions 108 Tax benefit (332 ) Net of tax Employee benefit plans: Amortization of the following 2 Net retirement plan actuarial gain (1,719 ) Other operating expense Net retirement plan prior service credit (15 ) Other operating expense (1,734 ) Total before tax 425 Tax benefit (1,309 ) Net of tax December 31, 2017 Details about Accumulated other Comprehensive Income Components (in thousands) Amount Reclassified from Accumulated Other Comprehensive (Loss) 1 Affected Line Item in the Statement Where Net Income is Presented Available-for-sale securities: Unrealized gains and losses on available-for-sale securities $ (407 ) Net (loss) gain on securities transactions 163 Tax benefit (244 ) Net of tax Employee benefit plans: Amortization of the following 2 Net retirement plan actuarial gain (1,508 ) Other operating expense Net retirement plan prior service credit (15 ) Other operating expense (1,523 ) Total before tax 609 Tax benefit (914 ) Net of tax 1 Amounts in parentheses indicate debits in income statement. 2 The accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost (See Note 11 - “Employee Benefit Plans”).

Commitments and Contingent Liab

Commitments and Contingent Liabilities	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Commitments and Contingent Liabilities The Company, in the normal course of business, is a party to financial instruments with off-balance-sheet risk to meet the financial needs of its customers. These financial instruments include loan commitments, standby letters of credit, and unused portions of lines of credit. The contract, or notional amount, of these instruments represents the Company’s involvement in particular classes of financial instruments. These instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized on the Consolidated Statements of Condition. The Company’s maximum potential obligations to extend credit for loan commitments (unfunded loans, unused lines of credit, and standby letters of credit) outstanding on December 31 were as follows: (in thousands) 2018 2017 Loan commitments $ 156,111 $ 148,611 Standby letters of credit 21,685 27,805 Undisbursed portion of lines of credit 819,252 815,188 Total $ 997,048 $ 991,604 Commitments to extend credit (including lines of credit) are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Standby letters of credit are conditional commitments to guarantee the performance of a customer to a third party. The Company extends standby letters of credit to its customers in the normal course of business. The standby letters of credit are generally short-term. As of December 31, 2018 , the Company’s maximum potential obligation under standby letters of credit was $21.7 million . Management uses the same credit policies in making commitments to extend credit and standby letters of credit as are used for on-balance-sheet lending decisions. Based upon management’s evaluation of the counterparty, the Company may require collateral to support commitments to extend credit and standby letters of credit. The credit risk amounts are equal to the contractual amounts, assuming the amounts are fully advanced and collateral or other security is of no value. The Company does not anticipate losses as a result of these transactions. These commitments also have off-balance-sheet interest-rate risk, in that the interest rate at which these commitments were made may not be at market rates on the date the commitments are fulfilled. Since some commitments and standby letters of credit are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash flow requirements. At December 31, 2018 , the Company had rate lock agreements associated with mortgage loans to be sold in the secondary market (certain of which relate to loan applications for which no formal commitment has been made) amounting to approximately $5.1 million . In order to limit the interest rate risk associated with rate lock agreements, as well as the interest rate risk associated with mortgages held for sale, if any, the Company enters into agreements to sell loans in the secondary market to unrelated investors on a loan-by-loan basis. At December 31, 2018 , the Company had approximately $2.7 million of commitments to sell mortgages to unrelated investors on a loan-by-loan basis. In the normal course of business, the Company is involved in various legal proceedings. In the opinion of management, based upon the review with counsel, the proceedings are not expected to have a material effect on the Company’s financial condition or results of operations.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Calculation of basic earnings per share (Basic EPS) and diluted earnings per share (Diluted EPS) is shown below. Year ended December 31, (in thousands, except share and per share data) 2018 2017 2016 Basic Net income available to common shareholders $ 82,308 $ 52,494 $ 59,340 Less: dividends and undistributed earnings allocated to unvested restricted stock awards (1,315 ) (818 ) (912 ) Net earnings allocated to common shareholders 80,993 51,676 58,428 Weighted average shares outstanding, including participating securities 15,283,914 15,193,438 15,044,733 Less: average participating securities (244,685 ) (243,006 ) (232,021 ) Weighted average shares outstanding - Basic 15,039,229 14,950,432 14,812,712 Diluted Net earnings allocated to common shareholders 80,993 51,676 58,428 Weighted average shares outstanding - Basic 15,039,229 14,950,432 14,812,712 Dilutive effect of common stock options or restricted stock awards 93,028 122,823 123,519 Weighted average shares outstanding - Diluted 15,132,257 15,073,255 14,936,231 Basic EPS $ 5.39 $ 3.46 $ 3.94 Diluted EPS $ 5.35 $ 3.43 $ 3.91 Stock-based compensation awards representing 10,013 , 20,789 , and 72,321 common shares for 2018 , 2017 , and 2016 , respectively, were not included in the computations of diluted earnings per common share because the effect on those periods would have been antidilutive.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements FASB ASC Topic 820, Fair Value Measurements and Disclosures, defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles and expands disclosures about fair value measurements. FASB ASC Topic 820 also establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are: Level 1 – Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; Level 2 – Quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs that are observable, either directly or indirectly, for substantially the full term of the asset or liability; Level 3 – Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity). The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of December 31, 2018 and 2017 segregated by the level of valuation inputs within the fair value hierarchy used to measure fair value. Recurring Fair Value Measurements December 31, 2018 (in thousands) Fair Value (Level 1) (Level 2) (Level 3) Available-for-sale securities U.S. Treasuries $ 289 $ 0 $ 289 $ 0 Obligations of U.S. Government sponsored entities $ 485,898 $ 0 $ 485,898 $ 0 Obligations of U.S. states and political subdivisions 85,440 0 85,440 0 Mortgage-backed securities - residential U.S. Government agencies 128,267 0 128,267 0 U.S. Government sponsored entities 630,558 0 630,558 0 Non-U.S. Government agencies or sponsored entities 31 0 31 0 U.S. corporate debt securities 2,175 0 2,175 0 Total Available-for-sale securities 1,332,658 0 1,332,658 0 Equity securities 887 0 0 887 The change in the fair value of the $887,000 of available-for-sale securities valued using significant unobservable inputs (level 3), between January 1, 2018 and December 31, 2018 was immaterial. Recurring Fair Value Measurements December 31, 2017 (in thousands) Fair Value (Level 1) (Level 2) (Level 3) Available-for-sale securities Obligations of U.S. Government sponsored entities 504,193 0 504,193 0 Obligations of U.S. states and political subdivisions 91,519 0 91,519 0 Mortgage-backed securities - residential U.S. Government agencies 137,735 0 137,735 0 U.S. Government sponsored entities 656,178 0 656,178 0 Non-U.S. Government agencies or sponsored entities 75 0 75 0 U.S. corporate debt securities 2,162 0 2,162 0 Total Available-for-sale securities 1,391,862 0 1,391,862 0 Equity securities 913 0 0 913 The change in the fair value of the $913,000 of available-for-sale securities valued using significant unobservable inputs (level 3), between January 1, 2017 and December 31, 2017 was immaterial. The Company determines fair value for its available-for-sale securities using an independent bond pricing service for identical assets or very similar securities. The pricing service uses a variety of techniques to determine fair value, including market maker bids, quotes and pricing models. Inputs to the model include recent trades, benchmark interest rates, spreads, and actual and projected cash flows. The Company reviews the prices supplied by the independent pricing service, as well as their underlying pricing methodologies, for reasonableness and to ensure such prices are aligned with traditional pricing matrices. In general, the Company’s investment portfolio consists of traditional investments, nearly all of which are U.S. Treasury obligations, federal agency bullet or mortgage pass-through securities, or general obligation municipal bonds. Pricing for such instruments is fairly generic and is easily obtained. At least annually, the Company will validate prices supplied by the independent pricing service by comparing to prices obtained from a second third-party source. Based on the inputs used by our independent pricing services, the Company identifies the appropriate level within the fair value hierarchy to report these fair values. Certain assets are measured at fair value on a nonrecurring basis, that is, they are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances. For the Company, these include loans held for sale, collateral dependent impaired loans, other real estate owned, goodwill and other intangible assets. During 2018 , certain collateral dependent impaired loans and other real estate owned at December 31, 2018 , were adjusted down to fair value. Collateral values are estimated using Level 2 inputs based upon observable market data. Real estate values are generally valued using independent appraisals or other indications of value based on recent comparable sales of similar properties or assumptions generally available in the market. Fair value measurements at reporting date using: Gain (losses) from fair value changes (in thousands) As of Quoted prices in active markets for identical assets Significant other observable inputs Significant unobservable inputs Twelve months ended Assets: 12/31/2018 (Level 1) (Level 2) (Level 3) 12/31/2018 Impaired loans $ 6,500 $ 0 $ 6,500 $ 0 $ (173 ) Other real estate owned 1,594 0 1,594 0 (211 ) Fair value measurements at reporting date using: Gain (losses) from fair value changes (in thousands) As of Quoted prices in active markets for identical assets Significant other observable inputs Significant unobservable inputs Twelve months ended Assets: 12/31/2017 (Level 1) (Level 2) (Level 3) 12/31/2017 Impaired loans $ 4,617 $ 0 $ 4,617 $ 0 $ (332 ) Other real estate owned 2,047 0 2,047 0 (532 ) The following table presents the carrying amounts and estimated fair values of the Company’s financial instruments at December 31, 2018 and 2017 . The carrying amounts shown in the table are included in the Consolidated Statements of Condition under the indicated captions. The fair value estimates, methods and assumptions set forth below for the Company’s financial instruments, including those financial instruments carried at cost, are made solely to comply with disclosures required by generally accepted accounting principles in the United States and does not always incorporate the exit-price concept of fair value prescribed by ASC Topic 820-10 and should be read in conjunction with the financial statements and notes included in this Report. Estimated Fair Value of Financial Instruments December 31, 2018 (in thousands) Carrying Amount Fair Value (Level 1) (Level 2) (Level 3) Financial Assets: Cash and cash equivalents $ 80,389 $ 80,389 $ 80,389 $ 0 $ 0 Securities - held-to-maturity 140,579 139,377 0 139,377 0 FHLB and FRB stock 52,262 52,262 0 52,262 0 Accrued interest receivable 20,922 20,922 0 20,922 0 Loans and leases, net 1 4,790,529 4,649,308 0 6,500 4,642,808 Financial Liabilities: Time deposits $ 637,295 $ 631,489 $ 0 $ 631,489 $ 0 Other deposits 4,251,664 4,251,664 0 4,251,664 0 Securities sold under agreements to repurchase 81,842 81,842 0 81,842 0 Other borrowings 1,076,075 1,074,081 0 1,074,081 0 Trust preferred debentures 16,863 21,921 0 21,921 0 Accrued interest payable 2,408 2,408 0 2,408 0 1 Lease receivables, although excluded from the scope of ASC Topic 825, are included in the estimated fair value amounts at their carrying value. Estimated Fair Value of Financial Instruments December 31, 2017 (in thousands) Carrying Amount Fair Value (Level 1) (Level 2) (Level 3) Financial Assets: Cash and cash equivalents $ 84,303 $ 84,303 $ 84,303 $ 0 $ 0 Securities - held-to-maturity 139,216 140,315 0 140,315 0 FHLB and FRB stock 50,498 50,498 0 50,498 0 Accrued interest receivable 20,122 20,122 0 20,122 0 Loans and leases, net 1 4,632,288 4,555,720 0 4,617 4,551,103 Financial Liabilities: Time deposits $ 748,250 $ 744,310 $ 0 $ 744,310 $ 0 Other deposits 4,089,557 4,089,557 0 4,089,557 0 Securities sold under agreements to repurchase 75,177 75,177 0 75,177 0 Other borrowings 1,071,742 1,069,609 0 1,069,609 0 Trust preferred debentures 16,691 22,012 0 22,012 0 Accrued interest payable 2,054 2,054 0 2,054 0 1 Lease receivables, although excluded from the scope of ASC Topic 825, are included in the estimated fair value amounts at their carrying value. The following methods and assumptions were used in estimating fair value disclosures for financial instruments. Cash and Cash Equivalents The carrying amounts reported in the Consolidated Statements of Condition for cash, noninterest-bearing deposits, money market funds, and Federal funds sold approximate the fair value of those assets. Securities Fair values for U.S. Treasury securities are based on quoted market prices. Fair values for obligations of U.S. government sponsored entities, mortgage-backed securities-residential, obligations of U.S. states and political subdivisions, and U.S. corporate debt securities are based on quoted market prices, where available, as provided by third party pricing vendors. If quoted market prices were not available, fair values are based on quoted market prices of comparable instruments in active markets and/or based upon matrix pricing methodology, which uses comprehensive interest rate tables to determine market price, movement and yield relationships. For miscellaneous equity securities, carrying value is cost. These securities are reviewed periodically to determine if there are any events or changes in circumstances that would adversely affect their value. FHLB and FRB Stock The carrying amount of FHLB and FRB stock approximates fair value. If the stock is redeemed, the Company will receive an amount equal to the par value of the stock. Loans and Leases Fair value for loans as of December 31, 2018, are calculated using an exit price notion. The Company's valuation methodology takes into account factors such as estimated cash flows, including contractual cash flow and assumptions for prepayments; liquidity risk; and credit risk. For prior periods, fair values were calculated using an entry price notion. The fair values of residential loans were estimated using discounted cash flow analyses, based upon available market benchmarks for rates and prepayment assumptions. The fair values of commercial and consumer loans were estimated using discounted cash flow analyses, based upon interest rates currently offered for loans and leases with similar terms and credit quality. The fair values of loans held for sale were determined based upon contractual prices for loans with similar characteristics. Accrued Interest Receivable and Accrued Interest Payable The carrying amount of these short term instruments approximate fair value. Deposits The fair values disclosed for noninterest bearing accounts and accounts with no stated maturities are equal to the amount payable on demand at the reporting date. The fair value of time deposits is based upon discounted cash flow analyses using rates offered for FHLB advances, which is the Company’s primary alternative source of funds. Securities Sold Under Agreements to Repurchase The carrying amounts of repurchase agreements and other short-term borrowings approximate their fair values. Fair values of long-term borrowings are estimated using a discounted cash flow approach, based on current market rates for similar borrowings. For securities sold under agreements to repurchase where the Company has elected the fair value option, the Company also receives pricing information from third parties, including the FHLB. Other Borrowings The fair values of other borrowings are estimated using discounted cash flow analysis, discounted at the Company’s current incremental borrowing rate for similar borrowing arrangements. For other borrowings where the Company has elected the fair value option, the Company also receives pricing information from third parties, including the FHLB. Trust Preferred Debentures The fair value of the trust preferred debentures has been estimated using a discounted cash flow analysis which uses a discount factor of a market spread over current interest rates for similar instruments.

Regulations and Supervision

Regulations and Supervision	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Regulations and Supervision	10.5% $492,857 />10.0% Trust Company $191,872/13.9% $144,822 />10.5% $137,926 />10.0% Castile $138,816/11.7% $124,738 />10.5% $118,798 />10.0% Mahopac $126,342/12.7% $104,146 />10.5% $99,186 />10.0% VIST $158,557/11.7% $142,048 />10.5% $135,284 />10.0% Common Equity Tier 1 Capital (to risk-weighted assets) The Company (consolidated) $583,458/11.8% $345,000 />7.0% $320,357 />6.5% Trust Company $180,077/13.1% $96,548 />7.0% $89,652 />6.5% Castile $129,482/10.9% $83,159>7.0% $77,219 />6.5% Mahopac $114,327/11.5% $69,431 />7.0% $64,471 />6.5% VIST $146,131/10.8% $94,699 />7.0% $87,934 />6.5% Tier 1 Capital (to risk-weighted assets) The Company (consolidated) $600,321/12.2% $418,929 />8.5% $394,286 />8.0% Trust Company $180,077/13.1% $117,237 />8.5% $110,341 />8.0% Castile $129,482/10.9% $100,978 />8.5% $95,038 />8.0% Mahopac $114,327/11.5% $84,309 />8.5% $79,349 />8.0% VIST $146,131/10.8% $114,991 />8.5% $108,227 />8.0% Tier 1 Capital (to average assets) The Company (consolidated) $600,321/9.1% $265,465 />4.0% $331,832 />5.0% Trust Company $180,077/8.5% $84,592 />4.0% $105,740 />5.0% Castile $129,482/8.6% $60,368 />4.0% $75,460 />5.0% Mahopac $114,327/8.4% $54,219 />4.0% $67,773 />5.0% VIST $146,131/8.8% $66,282 />4.0% $82,853 />5.0% December 31, 2017 Total Capital (to risk-weighted assets) The Company (consolidated) $585,013 /12.3% $500,676 />10.5% $476,835 />10.0% Trust Company $171,774/12.5% $144,235 />10.5% $137,366 />10.0% Castile $125,510/11.3% $117,042 />10.5% $111,469 />10.0% Mahopac $117,740/12.1% $102,555 />10.5% $97,672 />10.0% VIST $148,185/11.4% $136,518 />10.5% $130,017 />10.0% Common Equity Tier 1 Capital (to risk-weighted assets) The Company (consolidated) $526,822/11.1% $333,784 />7.0% $309,943 />6.5% Trust Company $160,047/11.7% $96,156 />7.0% $89,288 />6.5% Castile $116,783/10.5% $78,028>7.0% $72,455 />6.5% Mahopac $105,979/10.9% $68,370 />7.0% $63,487 />6.5% VIST $138,901/10.7% $91,012 />7.0% $84,511 />6.5% Tier 1 Capital (to risk-weighted assets) The Company (consolidated) $543,514/11.4% $405,310 />8.5% $381,468 />8.0% Trust Company $160,047/11.7% $116,761 />8.5% $109,893 />8.0% Castile $116,783/10.5% $94,748 />8.5% $89,175 />8.0% Mahopac $105,979/10.9% $83,021 />8.5% $78,137 />8.0% VIST $138,901/10.7% $110,515 />8.5% $104,014 />8.0% Tier 1 Capital (to average assets) The Company (consolidated) $543,514/8.4% $257,887 />4.0% $322,359 />5.0% Trust Company $160,047/7.8% $82,425 />4.0% $103,031 />5.0% Castile $116,783/8.1% $57,833 />4.0% $72,292 />5.0% Mahopac $105,979/8.1% $52,463 />4.0% $65,578 />5.0% VIST $138,901/8.6% $64,647 />4.0% $80,809 />5.0%" id="sjs-B4">Regulations and Supervision Capital Requirements: The Company and its subsidiary banks are subject to various regulatory capital requirements administered by Federal bank regulatory agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material adverse effect on the Company’s business, results of operation and financial condition. Under capital adequacy guidelines and the regulatory framework for prompt corrective action (PCA), banks must meet specific guidelines that involve quantitative measures of assets, liabilities, and certain off-balance-sheet items as calculated under regulatory accounting practices. Capital amounts and classifications of the Company and its subsidiary banks are also subject to qualitative judgments by regulators concerning components, risk weightings, and other factors. Quantitative measures established by regulation to ensure capital adequacy require the maintenance of minimum amounts and ratios (set forth in the table below) of common equity Tier I capital, total capital and Tier 1 capital to risk-weighted assets (as defined in the regulation), and of Tier 1 capital to average assets (as defined in the regulation). Management believes that the Company and its subsidiary banks meet all capital adequacy requirements to which they are subject. At year end 2017, the Company early adopted ASU 2018-02, "Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income". ASU 2018-02 permits a reclassification from accumulated other comprehensive income (loss) to retained earnings for stranded tax effects resulting from the newly enacted federal corporate income tax rate associated with the enactment of the Tax Cuts and Jobs Act in December 2017. The amount of the reclassification was the difference between the historical corporate income tax rate of 35 percent and the newly enacted 21 percent corporate income tax rate. The adoption resulted in the reclassification from accumulated other comprehensive income (loss) to retained earnings totaling $10.0 million , reflected in the Consolidated Statements of Changes in Shareholders' Equity. As of December 31, 2018 , the most recent notifications from Federal bank regulatory agencies categorized Tompkins Trust Company, The Bank of Castile, Mahopac Bank, and VIST Bank as “well capitalized” under the regulatory framework for PCA. To be categorized as well capitalized, the Company and its subsidiary banks must maintain total risk-based, Tier 1 risk-based, common equity Tier 1 capital and Tier 1 leverage ratios as set forth in the table below. There are no conditions or events since that notification that management believes have changed the capital category of the Company or its subsidiary banks. The following table presents actual and required capital ratios as of December 31, 2018 and December 31, 2017 for Tompkins and its four banking subsidiaries. The minimum required capital amounts presented include the minimum required capital levels as of January 1, 2019 when the Basel III Capital Rules have been fully phased-in. Capital levels required to be considered well capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules. Actual capital amounts and ratios of the Company and its subsidiary banks are as follows: Actual Minimum Capital Required- Basel III Fully-Phased-In Required (dollar amounts in thousands) Amount/Ratio Amount/Ratio Amount/Ratio December 31, 2018 Total Capital (to risk-weighted assets) The Company (consolidated) $645,891 /13.1% $517,500 />10.5% $492,857 />10.0% Trust Company $191,872/13.9% $144,822 />10.5% $137,926 />10.0% Castile $138,816/11.7% $124,738 />10.5% $118,798 />10.0% Mahopac $126,342/12.7% $104,146 />10.5% $99,186 />10.0% VIST $158,557/11.7% $142,048 />10.5% $135,284 />10.0% Common Equity Tier 1 Capital (to risk-weighted assets) The Company (consolidated) $583,458/11.8% $345,000 />7.0% $320,357 />6.5% Trust Company $180,077/13.1% $96,548 />7.0% $89,652 />6.5% Castile $129,482/10.9% $83,159>7.0% $77,219 />6.5% Mahopac $114,327/11.5% $69,431 />7.0% $64,471 />6.5% VIST $146,131/10.8% $94,699 />7.0% $87,934 />6.5% Tier 1 Capital (to risk-weighted assets) The Company (consolidated) $600,321/12.2% $418,929 />8.5% $394,286 />8.0% Trust Company $180,077/13.1% $117,237 />8.5% $110,341 />8.0% Castile $129,482/10.9% $100,978 />8.5% $95,038 />8.0% Mahopac $114,327/11.5% $84,309 />8.5% $79,349 />8.0% VIST $146,131/10.8% $114,991 />8.5% $108,227 />8.0% Tier 1 Capital (to average assets) The Company (consolidated) $600,321/9.1% $265,465 />4.0% $331,832 />5.0% Trust Company $180,077/8.5% $84,592 />4.0% $105,740 />5.0% Castile $129,482/8.6% $60,368 />4.0% $75,460 />5.0% Mahopac $114,327/8.4% $54,219 />4.0% $67,773 />5.0% VIST $146,131/8.8% $66,282 />4.0% $82,853 />5.0% December 31, 2017 Total Capital (to risk-weighted assets) The Company (consolidated) $585,013 /12.3% $500,676 />10.5% $476,835 />10.0% Trust Company $171,774/12.5% $144,235 />10.5% $137,366 />10.0% Castile $125,510/11.3% $117,042 />10.5% $111,469 />10.0% Mahopac $117,740/12.1% $102,555 />10.5% $97,672 />10.0% VIST $148,185/11.4% $136,518 />10.5% $130,017 />10.0% Common Equity Tier 1 Capital (to risk-weighted assets) The Company (consolidated) $526,822/11.1% $333,784 />7.0% $309,943 />6.5% Trust Company $160,047/11.7% $96,156 />7.0% $89,288 />6.5% Castile $116,783/10.5% $78,028>7.0% $72,455 />6.5% Mahopac $105,979/10.9% $68,370 />7.0% $63,487 />6.5% VIST $138,901/10.7% $91,012 />7.0% $84,511 />6.5% Tier 1 Capital (to risk-weighted assets) The Company (consolidated) $543,514/11.4% $405,310 />8.5% $381,468 />8.0% Trust Company $160,047/11.7% $116,761 />8.5% $109,893 />8.0% Castile $116,783/10.5% $94,748 />8.5% $89,175 />8.0% Mahopac $105,979/10.9% $83,021 />8.5% $78,137 />8.0% VIST $138,901/10.7% $110,515 />8.5% $104,014 />8.0% Tier 1 Capital (to average assets) The Company (consolidated) $543,514/8.4% $257,887 />4.0% $322,359 />5.0% Trust Company $160,047/7.8% $82,425 />4.0% $103,031 />5.0% Castile $116,783/8.1% $57,833 />4.0% $72,292 />5.0% Mahopac $105,979/8.1% $52,463 />4.0% $65,578 />5.0% VIST $138,901/8.6% $64,647 />4.0% $80,809 />5.0%

Condensed Parent Company Only F

Condensed Parent Company Only Financial Statements	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
Condensed Parent Company Only Financial Statements	Condensed Parent Company Only Financial Statements Condensed financial statements for Tompkins (the Parent Company) as of December 31, 2018, 2017 and 2016 are presented below. Condensed Statements of Condition (in thousands) 2018 2017 Assets Cash $ 6,235 $ 3,326 Investment in subsidiaries, at equity 625,193 586,976 Other 9,416 10,686 Total Assets $ 640,844 $ 600,988 Liabilities and Shareholders’ Equity Borrowings $ 4,000 $ 9,000 Trust preferred debentures issued to non-consolidated subsidiary 16,863 16,691 Other liabilities 522 517 Tompkins Financial Corporation Shareholders’ Equity 619,459 574,780 Total Liabilities and Shareholders’ Equity $ 640,844 $ 600,988 Condensed Statements of Income (in thousands) 2018 2017 2016 Dividends received from subsidiaries 44,518 33,522 47,584 Other income 332 281 269 Total Operating Income 44,850 33,803 47,853 Interest expense 1,468 1,550 2,743 Other expenses 7,222 6,120 6,089 Total Operating Expenses 8,690 7,670 8,832 Income Before Taxes and Equity in Undistributed Earnings of Subsidiaries 36,160 26,133 39,021 Income tax benefit 1,687 1,867 3,549 Equity in undistributed earnings of subsidiaries 44,461 24,494 16,770 Net Income $ 82,308 $ 52,494 $ 59,340 Condensed Statements of Cash Flows (in thousands) 2018 2017 2016 Operating activities Net income $ 82,308 $ 52,494 $ 59,340 Adjustments to reconcile net income to net cash provided by operating activities Equity in undistributed earnings of subsidiaries (44,461 ) (24,494 ) (16,770 ) Other, net 1,014 (1,569 ) 1,826 Net Cash Provided by Operating Activities 38,861 26,431 44,396 Investing activities Other, net 0 1,052 24 Net Cash Provided by Investing Activities 0 1,052 24 Financing activities Borrowings, net (5,000 ) (28,161 ) 2,490 Cash dividends (29,634 ) (27,627 ) (26,603 ) Repurchase of common shares (2,448 ) 0 (1,166 ) Net proceeds from restricted stock awards (1,403 ) (1,294 ) (835 ) Shares issued for dividend reinvestment plans 0 2,872 3,201 Shares issued for employee stock ownership plan 3,073 2,296 1,938 Net proceeds from exercise of stock options (540 ) (641 ) (806 ) Net Cash Used in Financing Activities (35,952 ) (52,555 ) (21,781 ) Net (decrease) increase in cash 2,909 (25,072 ) 22,639 Cash at beginning of year 3,326 28,398 5,759 Cash at End of Year $ 6,235 $ 3,326 $ 28,398 A Statement of Changes in Shareholders’ Equity has not been presented since it is the same as the Consolidated Statement of Changes in Shareholders’ Equity previously presented.

Segment and Related Information

Segment and Related Information	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Segment and Related Information	Segment and Related Information The Company manages its operations through three reportable business segments in accordance with the standards set forth in FASB ASC 280, “Segment Reporting”: (i) banking and financial services (“Banking”), (ii) insurance services (“Tompkins Insurance Agencies, Inc.”) and (iii) wealth management (“Tompkins Financial Advisors”). The Company’s insurance services and wealth management services are managed separately from the Banking segment. Banking The banking segment is primarily comprised of the Company's four banking subsidiaries: Tompkins Trust Company, a commercial bank with 14 banking offices operated in Ithaca, NY and surrounding communities. The Bank of Castile (DBA Tompkins Bank of Castile), a commercial bank with 18 banking offices located in the Genesee Valley region of New York State as well as Monroe County; Mahopac Bank (DBA Tompkins Mahopac Bank), a commercial bank with 14 full-service banking offices located in the counties north of New York City; and VIST Bank (DBA Tompkins VIST Bank), a banking organization with 20 banking offices headquartered and operating in Southeastern Pennsylvania. Banking services consist primarily of attracting deposits from the areas served by the Company’s banking subsidiaries and using those deposits to originate a variety of commercial loans, agricultural loans, consumer loans, real estate loans and leases in those same areas. The Company’s subsidiary banks provide a variety of retail banking services including checking accounts, savings accounts, time deposits, IRA products, residential mortgage loans, personal loans, home equity loans, credit cards, debit cards and safe deposit services delivered through its branch facilities, ATMs, voice response, mobile banking, Internet banking and remote deposit services. The Company’s subsidiary banks also provide a variety of commercial banking services such as lending activities for a variety of business purposes, including real estate financing, construction, equipment financing, accounts receivable financing and commercial leasing. Other commercial services include deposit and cash management services, letters of credit, sweep accounts, credit cards, Internet-based account services, mobile banking and remote deposit services. The banking subsidiaries do not engage in sub-prime lending. Insurance The Company provides property and casualty insurance services and employee benefits consulting through Tompkins Insurance Agencies, Inc., a wholly-owned subsidiary of the Company, headquartered in Batavia, New York. Tompkins Insurance is an independent insurance agency, representing many major insurance carriers. Tompkins Insurance provides employee benefit consulting to employers in Western and Central New York and Southeastern Pennsylvania, assisting them with their medical, group life insurance and group disability insurance. Through the 2012 acquisition of VIST Financial, Tompkins Insurance expanded its operations with the addition of VIST Insurance, a full service agency offering a similar array of insurance products as Tompkins Insurance in southeastern Pennsylvania. Tompkins Insurance offers services to customers of the Company’s banking subsidiaries by sharing offices with The Bank of Castile, Tompkins Trust Company and VIST Bank. In addition to these shared offices, Tompkins Insurance has five stand-alone offices in Western New York. Wealth Management The wealth management segment is generally organized under the Tompkins Financial Advisors brand. Tompkins Financial Advisors offers a comprehensive suite of financial services to customers, including trust and estate services, investment management and financial and insurance planning for individuals, corporate executives, small business owners and high net worth individuals. Tompkins Financial Advisors has offices in each of the Company’s four subsidiary banks. Summarized financial information concerning the Company’s reportable segments and the reconciliation to the Company’s consolidated results is shown in the following table. Investment in subsidiaries is netted out of the presentations below. The “Intercompany” column identifies the intercompany activities of revenues, expenses and other assets between the banking and financial services segments. The Company accounts for intercompany fees and services at an estimated fair value according to regulatory requirements for the services provided. Intercompany items relate primarily to the use of human resources, information systems, accounting and marketing services provided by any of the banks and the holding company. All other accounting policies are the same as those described in Note 1 “Summary of significant accounting policies” in this Report. As of and for the year ended December 31, 2018 (in thousands) Banking Insurance Wealth Management Intercompany Consolidated Interest income $ 251,592 $ 3 $ 0 $ (3 ) $ 251,592 Interest expense 39,795 0 0 (3 ) 39,792 Net interest income 211,797 3 0 0 211,800 Provision for loan and lease losses 3,942 0 0 0 3,942 Noninterest income 31,738 29,760 17,997 (2,046 ) 77,449 Noninterest expense 145,070 25,427 12,616 (2,046 ) 181,067 Income before income tax expense 94,523 4,336 5,381 0 104,240 Income tax expense 19,486 1,092 1,227 0 21,805 Net Income attributable to noncontrolling interests and Tompkins Financial Corporation 75,037 3,244 4,154 0 82,435 Less: Net income attributable to noncontrolling interests 127 0 0 0 127 Net Income attributable to Tompkins Financial Corporation $ 74,910 $ 3,244 $ 4,154 $ 0 $ 82,308 Depreciation and amortization $ 9,194 $ 230 $ 130 $ 0 $ 9,554 Assets 6,707,625 42,088 21,365 (12,642 ) 6,758,436 Goodwill 64,370 19,702 8,211 0 92,283 Other intangibles, net 4,224 3,192 212 0 7,628 Net loans and leases 4,790,529 0 0 0 4,790,529 Deposits 4,900,464 0 0 (11,505 ) 4,888,959 Total equity 568,988 32,996 18,887 0 620,871 As of and for the year ended December 31, 2017 (in thousands) Banking Insurance Wealth Management Intercompany & Merger Consolidated Interest income $ 226,764 $ 2 $ 0 $ (2 ) $ 226,764 Interest expense 25,462 0 0 (2 ) 25,460 Net interest income 201,302 2 0 0 201,304 Provision for loan and lease losses 4,161 0 0 0 4,161 Noninterest income 25,498 29,106 16,345 (1,745 ) 69,204 Noninterest expense 135,750 24,503 12,597 (1,745 ) 171,105 Income before income tax expense 86,889 4,605 3,748 0 95,242 Income tax expense 39,731 1,705 1,184 0 42,620 Net Income attributable to noncontrolling interests and Tompkins Financial Corporation 47,158 2,900 2,564 0 52,622 Less: Net income attributable to noncontrolling interests 128 0 0 0 128 Net Income attributable to Tompkins Financial Corporation $ 47,030 $ 2,900 $ 2,564 $ 0 $ 52,494 Depreciation and amortization $ 7,927 $ 285 $ 57 $ 0 $ 8,269 Assets 6,602,242 39,599 17,779 (11,330 ) 6,648,290 Goodwill 64,369 19,711 8,211 0 92,291 Other intangibles, net 5,170 3,812 281 0 9,263 Net loans and leases 4,629,349 0 0 0 4,629,349 Deposits 4,848,654 0 0 (10,847 ) 4,837,807 Total equity 530,386 31,083 14,733 0 576,202 As of and for the year ended December 31, 2016 (in thousands) Banking Insurance Wealth Management Intercompany & Merger Consolidated Interest income $ 202,739 $ 2 $ 0 $ (2 ) $ 202,739 Interest expense 22,105 0 0 (2 ) 22,103 Net interest income 180,634 2 0 0 180,636 Provision for loan and lease losses 4,321 0 0 0 4,321 Noninterest income 24,402 29,741 15,842 (1,177 ) 68,808 Noninterest expense 123,004 24,564 12,216 (1,177 ) 158,607 Income before income tax expense 77,711 5,179 3,626 0 86,516 Income tax expense 23,928 1,906 1,211 0 27,045 Net Income attributable to noncontrolling interests and Tompkins Financial Corporation 53,783 3,273 2,415 0 59,471 Less: Net income attributable to noncontrolling interests 131 0 0 0 131 Net Income attributable to Tompkins Financial Corporation $ 53,652 $ 3,273 $ 2,415 $ 0 $ 59,340 Depreciation and amortization 6,401 353 75 0 $ 6,829 Assets 6,190,824 38,988 15,403 (8,459 ) 6,236,756 Goodwill 64,369 20,043 8,211 0 92,623 Other intangibles, net 6,433 4,560 356 0 11,349 Net loans and leases 4,222,278 0 0 0 4,222,278 Deposits 4,633,527 0 0 (8,388 ) 4,625,139 Total equity 506,411 30,825 12,169 0 549,405 Unaudited Quarterly Financial Data 2018 (in thousands) First Second Third Fourth Interest and dividend income $ 60,140 $ 62,143 $ 63,984 $ 65,325 Interest expense 7,453 9,429 10,821 12,089 Net interest income 52,687 52,714 53,163 53,236 Provision for loan and lease losses 567 1,045 272 2,058 Income before income taxes 26,229 27,842 26,361 23,808 Net income 20,436 22,059 20,902 18,911 Net income per common share (basic) 1.34 1.44 1.37 1.24 Net income per common share (diluted) 1.33 1.43 1.36 1.23 Unaudited Quarterly Financial Data 2017 (in thousands) First Second Third Fourth Interest and dividend income $ 53,621 $ 56,342 $ 57,772 $ 59,029 Interest expense 5,587 6,041 6,772 7,060 Net interest income 48,034 50,301 51,000 51,969 Provision for loan and lease losses 769 976 402 2,014 Income before income taxes 23,137 25,207 25,917 20,981 Net income 15,717 16,926 17,394 2,457 Net income per common share (basic) 1.04 1.11 1.14 0.16 Net income per common share (diluted) 1.03 1.11 1.14 0.16

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Basis Of Presentation	Basis Of Presentation Tompkins Financial Corporation (“Tompkins” or “the Company”) is a registered Financial Holding Company with the Federal Reserve Board pursuant to the Bank Holding Company Act of 1956, as amended, organized under the laws of New York State, and is the parent company of Tompkins Trust Company (the “Trust Company”), The Bank of Castile, Mahopac Bank, VIST Bank, and Tompkins Insurance Agencies, Inc. (“Tompkins Insurance”). The Trust Company provides a full array of trust and investment services under the Tompkins Financial Advisors brand. Unless the context otherwise requires, the term “Company” refers to Tompkins Financial Corporation and its subsidiaries. The consolidated financial information included herein combines the results of operations, the assets, liabilities, and shareholders’ equity (including comprehensive income or loss) of the Company and all entities in which the Company has a controlling financial interest. All significant intercompany balances and transactions are eliminated in consolidation. The Company determines whether it has a controlling financial interest in an entity by first evaluating whether the entity is a voting interest entity or a variable interest entity under U.S. accounting principles generally accepted. Voting interest entities are entities in which the total equity investment at risk is sufficient to enable the entity to finance itself independently and provides the equity holders with the obligation to absorb losses, the right to receive residual returns and the right to make decisions about the entity’s activities. The Company consolidates voting interest entities in which it has all, or at least a majority of, the voting interest. As defined in applicable accounting standards, variable interest entities (VIEs) are entities that lack one or more of the characteristics of a voting interest entity. A controlling financial interest in a VIE is present when the Company has both the power and ability to direct the activities of the VIE that most significantly impact the VIE’s economic performance and an obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. The Company’s wholly owned subsidiaries, Sleepy Hollow Capital Trust I, Leesport Capital Trust II, and Madison Statutory Trust I are VIE’s for which the Company is not the primary beneficiary. Accordingly, the accounts of these entities are not included in the Company’s consolidated financial statements. The consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles. In preparing the financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclose contingent assets and liabilities, at the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include the allowance for loan and lease losses, valuation of goodwill and intangible assets, deferred income tax assets, other-than-temporary impairment on investments, and obligations related to employee benefits. Amounts in the prior years’ consolidated financial statements are reclassified when necessary to conform to the current year’s presentation. The consolidated financial information included herein combines the results of operations, the assets, liabilities, and shareholders’ equity of the Company and its subsidiaries. Amounts in the prior periods’ unaudited condensed consolidated financial statements are reclassified when necessary to conform to the current periods’ presentation.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents in the Consolidated Statements of Cash Flows include cash and noninterest bearing balances due from banks, interest-bearing balances due from banks, Federal funds sold, and money market funds. Management regularly evaluates the credit risk associated with the counterparties to these transactions and believes that the Company is not exposed to any significant credit risk on cash and cash equivalents. Each bank subsidiary is required to maintain reserve balances by the Federal Reserve Bank of New York.
Securities	Securities Management determines the appropriate classification of debt and equity securities at the time of purchase. Securities are classified as held-to-maturity when the Company has the positive intent and ability to hold the securities to maturity. Held-to-maturity securities are stated at amortized cost. Debt securities not classified as held-to-maturity and marketable equity securities are classified as either available-for-sale or trading. Available-for-sale securities are stated at fair value with the unrealized gains and losses, net of tax, excluded from earnings and reported as a separate component of accumulated comprehensive income or loss, in shareholders’ equity. Trading securities are stated at fair value, with unrealized gains or losses included in earnings. Beginning January 1, 2018, upon adoption of ASU 2016-01, equity securities with readily determinable fair values are stated at fair value with realized and unrealized gains and losses reported in income. For periods prior to January 1, 2018, equity securities were classified as available-for-sale and stated at fair value with unrealized gains and losses reported as a separate component of accumulated other comprehensive income, net of tax. Securities with limited marketability or restricted equity securities, such as Federal Home Loan Bank stock and Federal Reserve Bank stock, are carried at cost, less any impairment, if any. Premiums and discounts are amortized or accreted over the expected life of the related security as an adjustment to yield using the interest method. Dividend and interest income are recognized when earned. Realized gains and losses on the sale of securities are included in net gain (loss) on securities transactions. The cost of securities sold is based on the specific identification method. At least quarterly, the Company performs an assessment to determine whether there have been any events or economic circumstances indicating that a security with an unrealized loss has suffered other-than-temporary impairment. A debt security is considered impaired if the fair value is less than its amortized cost basis at the reporting date. If impaired, the Company then assesses whether the unrealized loss is other-than-temporary. An unrealized loss on a debt security is generally deemed to be other-than-temporary and a credit loss is deemed to exist if the present value, discounted at the security’s effective rate, of the expected future cash flows is less than the amortized cost basis of the debt security. As a result, the credit loss component of an other-than-temporary impairment write-down for debt securities is recorded in earnings while the remaining portion of the impairment loss is recognized, net of tax, in other comprehensive income provided that the Company does not intend to sell the underlying debt security and it is more-likely-than not that the Company would not have to sell the debt security prior to recovery of the unrealized loss, which may be to maturity. If the Company intended to sell any securities with an unrealized loss or it is more-likely-than not that the Company would be required to sell the investment securities, before recovery of their amortized cost basis, then the entire unrealized loss would be recorded in earnings.
Loans and Leases	Loans and Leases Loans are reported at their principal outstanding balance, net of deferred loan origination fees and costs, and unearned income. The Company has the ability and intent to hold its loans for the foreseeable future, except for certain residential real estate loans held-for-sale. The Company provides motor vehicle and equipment financing to its customers through direct financing leases. These leases are carried at the aggregate of lease payments receivable, plus estimated residual values, less unearned income. Unearned income on direct financing leases is amortized over the lease terms, resulting in a level rate of return. Residential real estate loans originated and intended for sale in the secondary market are carried at the lower of aggregate cost or estimated fair value. Fair value is determined on the basis of the rates quoted in the secondary market. Net unrealized losses attributable to changes in market interest rates are recognized through a valuation allowance by charges to income. Loans are generally sold on a non-recourse basis with servicing retained. Any gain or loss on the sale of loans is recognized at the time of sale as the difference between the recorded basis in the loan and the net proceeds from the sale. The Company may use commitments at the time loans are originated or identified for sale to mitigate interest rate risk. The commitments to sell loans and the commitments to originate loans held-for-sale at a set interest rate, if originated, are considered derivatives under ASC Topic 815. The impact of the estimated fair value adjustment was not significant to the consolidated financial statements. Interest income on loans is accrued and credited to income based upon the principal amount outstanding. Loan origination fees and costs are deferred and recognized over the life of the loan as an adjustment to yield. Loans are considered past due if the required principal and interest payments have not been received as of the date such payments are due. Loans and leases, including impaired loans, are generally classified as nonaccrual if they are past due as to maturity or payment of principal or interest for a period of more than 90 days, unless such loans are well secured and in the process of collection. Loans that are past due less than 90 days may also be classified as nonaccrual if repayment in full of principal or interest is in doubt. Loans may be returned to accrual status when all principal and interest amounts contractually due (including arrearages) are reasonably assured of repayment within an acceptable time period, and there is a sustained period (generally six consecutive months) of repayment performance by the borrower in accordance with the contractual terms of the loan agreement. When interest accrual is discontinued, all unpaid accrued interest is reversed. Payments received on loans on nonaccrual are generally applied to reduce the principal balance of the loan. The Company applies the provisions of ASC Topic 310-10-35, Loan Impairment , to all impaired commercial and commercial real estate loans over $250,000 and to all loans restructured in a troubled debt restructuring. Allowances for loan losses for the remaining loans are recognized in accordance with ASC Topic 450, Contingencies (“ASC Topic 450”). Management considers a loan to be impaired if, based on current information, it is probable that the Company will be unable to collect all scheduled payments of principal or interest when due, according to the contractual terms of the loan agreement. When a loan is considered to be impaired, the amount of the impairment is measured based on the present value of expected future cash flows discounted at the effective interest rate of the loan or, as a practical expedient, at the observable market price or the fair value of collateral (less costs to sell) if the loan is collateral dependent. Management excludes large groups of smaller balance homogeneous loans such as residential mortgages, consumer loans, and leases, which are collectively evaluated. Loans are considered modified in a troubled debt restructuring (“TDR”) when, due to a borrower’s financial difficulties, the Company makes a concession(s) to the borrower that it would not otherwise consider. These modifications may include, among others, an extension for the term of the loan, and granting a period when interest-only payments can be made with the principal payments and interest caught up over the remaining term of the loan or at maturity. Generally, a nonaccrual loan that has been modified in a TDR remains on non-accrual status for a period of six months to demonstrate that the borrower is able to meet the terms of the modified loan. However, performance prior to the modification, or significant events that coincide with the modification, are included in assessing whether the borrower can meet the new terms and may result in the loan being returned to accrual status at the time of loan modification or after a shorter performance period. If the borrower’s ability to meet the revised payment schedule is uncertain, the loan remains on nonaccrual status. In general, the principal balance of a loan is charged off in full or in part when management concludes, based on the available facts and circumstances, that collection of principal in full is not probable. For commercial and commercial real estate loans, this conclusion is generally based upon a review of the borrower’s financial condition and cash flow, payment history, economic conditions, and the conditions in the various markets in which the collateral, if any, may be liquidated. In general, consumer loans are charged-off in accordance with regulatory guidelines which provide that such loans be charged-off when the Company becomes aware of the loss, such as from a triggering event that may include new information about a borrower’s intent/ability to repay the loan, bankruptcy, fraud or death, among other things, but in no case will the charge-off exceed specified delinquency timeframes. Such delinquency timeframes state that closed-end retail loans (loans with pre-defined maturity dates, such as real estate mortgages, home equity loans and consumer installment loans) that become past due 120 cumulative days and open-end retail loans (loans that roll-over at the end of each term, such as home equity lines of credit) that become past due 180 cumulative days should be classified as a loss and charged-off. For residential real estate loans, charge-off decisions are based upon past due status, current assessment of collateral value, and general market conditions in the areas where the properties are located.
Acquired Loans and Leases	Acquired Loans and Leases Loans acquired in acquisitions, subsequent to the effective date of ASC Topic 805, Business Combination, are recorded at fair value and subsequently accounted for in accordance with ASC Topic 310, and there is no carryover of the related allowance for loan and lease losses. Loans acquired with evidence of credit impairment are accounted for under ASC Subtopic 310-30. These loans may be aggregated and accounted for as pools of loans if the loans being aggregated have common risk characteristics. In the VIST acquisition, the Company elected to account for the loans with evidence of credit deterioration individually rather than aggregate them into pools. The difference between the undiscounted cash flows expected at acquisition and the investment in the acquired loans, or the “accretable yield,” is recognized as interest income utilizing the level-yield method over the life of each loan. Contractually required payments for interest and principal that exceed the undiscounted cash flows expected at acquisition, or the “non-accretable difference,” are not recognized as a yield adjustment, as a loss accrual or as a valuation allowance. Increases in expected cash flows subsequent to the acquisition are recognized prospectively through an adjustment of the yield on the loans over the remaining life, while decreases in expected cash flows are recognized as impairment through a loss provision and an increase in the allowance for loan losses. Valuation allowances (recognized in the allowance for loan losses) on these impaired loans reflect only losses incurred after the acquisition (representing all cash flows that were expected at acquisition but currently are not expected to be received). Acquired loans not exhibiting evidence of credit impairment at the time of acquisition are accounted for under ASC Subtopic 310-20. The Company amortizes/accretes into interest income the premium/discount determined at the date of purchase over the life of the loan on a level yield basis. Subsequent to the acquisition date, the methods used to estimate the appropriate allowance for loan losses are similar to originated loans. These loans are placed on nonaccrual status in accordance with the Company’s policy for originated loans. Acquired loans that met the criteria for nonaccrual of interest prior to the acquisition may be considered performing upon acquisition, regardless of whether the customer is contractually delinquent, if we can reasonably estimate the timing and amount of the expected cash flows on such loans and if the Company expects to fully collect the new carrying value of the loans. As such, we may no longer consider the loan to be nonaccrual or nonperforming and may accrue interest on these loans, including the impact of any accretable discount. The Company determined at acquisition that it could reasonably estimate future cash flows on acquired loans that were past due 90 days or more and on which the Company expects to fully collect the carrying value of the loans net of the allowance for acquired loan losses. As such, the Company does not consider these loans to be nonaccrual or nonperforming.
Allowance For Loan and Lease Losses	Allowance For Loan and Lease Losses The Company has developed a methodology to measure the amount of estimated loan loss exposure inherent in the loan portfolio to assure that an appropriate allowance is maintained. The Company’s methodology is based upon guidance provided in SEC Staff Accounting Bulletin No. 102, Selected Loan Loss Allowance Methodology and Documentation Issues and allowance allocations are calculated in accordance with ASC Topic 310, Receivables and ASC Topic 450, Contingencies . The model is comprised of four major components that management has deemed appropriate in evaluating the appropriateness of the allowance for loan and lease losses. While none of these components, when used independently, is effective in arriving at a reserve level that appropriately measures the risk inherent in the portfolio, management believes that using them collectively, provides reasonable measurement of the loss exposure in the portfolio. The components include: impaired loans; criticized and classified credits; historical loss experience; and qualitative or subjective analysis. For impaired loans, an allowance is recognized if the fair value of the loan is less than the recorded investment in the loan (recorded investment in the loan is the principal balance plus any accrued interest, net of deferred loan fees or costs and unamortized premium or discount). A loan’s fair value reflects the present value of expected future cash flows discounted at the loan’s effective interest rate, or if the loan is collateral dependent, the fair value of the collateral, less estimated disposal costs. If the loan is collateral dependent, the principal balance of the loan is charged-off in an amount equal to the impairment measurement. The fair value of collateral dependent loans is derived primarily from collateral appraisals performed by independent third-party appraisers. For loans that are not impaired, but are rated special mention or worse, management evaluates credits based on elevated risk characteristics and assigns reserves based upon analysis of historical loss experience of loans with similar risk characteristics. For loans that are not impaired or reviewed individually, management assigns a reserve based upon historical loss experience over a designated look-back period. Management has evaluated a variety of look-back periods and has determined that an eight year look back period is appropriate to capture a full range of economic cycles. Management has also evaluated a variety of statistical methods in analyzing loss history, including averages, weighted averages and loss emergence periods and has determined that by applying a loss emergence period analysis to historical losses over a full economic cycle has resulted in a reasonable estimate of losses inherent in the loan portfolio. The model also includes an analysis of a variety of subjective factors to support the reserve estimate. These subjective factors may include allowance allocations for risks that may not otherwise be fully recognized in other components of the model. Among the subjective factors that are routinely considered as part of this analysis are: growth trends in the portfolio, changes in management and/or polices related to lending activities, trends in classified or nonaccrual loans, concentrations of credit, local and national economic trends, and industry trends. Periodically, management conducts an analysis to estimate the loss emergence period for various loan categories based on samples of historical charge-offs. Model output by loan category is reviewed to evaluate the reasonableness of the reserve levels in comparison to the estimated loss emergence period applied to historical loss experience. In addition to the components discussed above, management reviews the model output for reasonableness by analyzing the results in comparisons to recent trends in the loan/lease portfolio, through back-testing of results from prior models in comparison to actual loss history, and by comparing our reserves and loss history to industry peer results. The model results are reviewed by management at the Corporate Credit Policy Committee and presented to the Board of Directors. Additionally, on an annual basis, management conducts a validation process of the model. This validation includes reviewing the appropriateness of model calculations, back testing of model results and appropriateness of key assumptions used in the model. In addition, various Federal and State regulatory agencies, as part of their examination process, review the Company’s allowance and may require the Company to recognize additions to the allowance based on their judgments about information available to them at the time of their examination. For acquired credit impaired loans accounted for under FASB ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality, (“ASC Topic 310-30”), the Company’s allowance for loan and lease losses is estimated based upon our expected cash flows for these loans. To the extent that we experience a deterioration in borrower credit quality resulting in a decrease in our expected cash flows subsequent to the acquisition of the loans, an allowance for loan losses would be established based on our estimate of future credit losses over the remaining life of the loans. For acquired non-credit impaired loans accounted for under FASB ASC Topic 310-20, Nonrefundable Fees and Other Costs , (“ASC Topic 310-20”), the Company’s allowance for loan and lease losses is maintained through provisions for loan losses based upon an evaluation process that is similar to our evaluation process used for originated loans. This evaluation, which includes a review of loans on which full collectability may not be reasonably assured, considers, among other matters, the estimated fair value of the underlying collateral, economic conditions, historical net loan loss experience, carrying value of the loans, which includes the remaining net purchase discount or premium, and other factors that warrant recognition in determining our allowance for loan losses. Additionally, in June 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ("ASU 2016-13") , which replaces the current "incurred loss" model for recognizing credit losses with an "expected loss" model referred to as the Current Expected Credit Loss ("CECL") model. ASU 2016-13 will become effective for the Company for fiscal years beginning after December 15, 2019 and for interim periods within those fiscal years. Under the CECL model, we will be required to present certain financial assets carried at amortized cost at the net amount expected to be collected. Accordingly, the Company’s management anticipates that this significant accounting rule adjustment will materially affect how we determine our allowance for loan and lease losses as well as our accounting for investment securities.
Premises and Equipment	Premises and Equipment Land is carried at cost. Premises and equipment are stated at cost, less allowances for depreciation. The provision for depreciation for financial reporting purposes is computed generally by the straight-line method at rates sufficient to write-off the cost of such assets over their estimated useful lives. Buildings are amortized over a period of 10 - 39 years, and furniture, fixtures, and equipment are amortized over a period of 2 - 20 years. Leasehold improvements are generally depreciated over the lesser of the lease term or the estimated lives of the improvements. Maintenance and repairs are charged to expense as incurred. Gains or losses on disposition are reflected in earnings.
Other Real Estate Owned	Other Real Estate Owned Other real estate owned consists of properties formerly pledged as collateral to loans, which have been acquired by the Company through foreclosure proceedings or acceptance of a deed in lieu of foreclosure. Upon transfer of a loan to foreclosure status, an appraisal is generally obtained and any excess of the loan balance over the fair value, less estimated costs to sell, is charged against the allowance for loan/lease losses. Expenses and subsequent adjustments to the fair value are treated as other operating expense.
Goodwill	Goodwill Goodwill represents the excess of purchase price over the fair value of assets acquired in a transaction using purchase accounting. Goodwill has an indefinite useful life and is not amortized, but is tested for impairment. Goodwill impairment tests are performed on an annual basis or when events or circumstances dictate. The Company tests goodwill annually as of December 31 st . The Company has the option to perform a qualitative assessment of goodwill, which considers company-specific and economic characteristics that might impact its carrying value. If based on this qualitative assessment, it is more likely than not that the fair value of the reporting unit is less than its carrying amount, then a quantitative test (Step 1) is performed, which compares the fair value of the reporting unit to the carrying amount of the reporting unit in order to identify potential impairment. If the estimated fair value of a reporting unit exceeds its carrying amount, the goodwill of the reporting unit is not considered impaired. However, if the carrying amount of the reporting unit were to exceed its estimated fair value, a second step (Step 2) would be performed that would compare the implied fair value of the reporting unit’s goodwill with the carrying amount of the goodwill for the reporting unit. The implied fair value of goodwill is determined in the same manner as goodwill that is recognized in a business combination. Significant judgment and estimates are involved in estimating the fair value of the assets and liabilities of the reporting units.
Other Intangible Assets	Other Intangible Assets Other intangible assets include core deposit intangibles, customer related intangibles, covenants not to compete, and mortgage servicing rights. Core deposit intangibles represent a premium paid to acquire a base of stable, low cost deposits in the acquisition of a bank, or a bank branch, using purchase accounting. The amortization period for core deposit intangible ranges from 5 to 10 years , using an accelerated method. The covenants not to compete are amortized on a straight-line basis over 3 to 6 years , while customer related intangibles are amortized on an accelerated basis over a range of 6 to 15 years . The amortization period is monitored to determine if circumstances require such periods to be revised. The Company periodically reviews its intangible assets for changes in circumstances that may indicate the carrying amount of the asset is impaired. The Company tests its intangible assets for impairment on an annual basis or more frequently if conditions indicate that an impairment loss has more likely than not been incurred.
Income Taxes	Income Taxes Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Deferred taxes are reviewed quarterly and reduced by a valuation allowance if, based upon the information available, it is more likely than not that some or all of the deferred tax assets will not be realized. Realization of deferred tax assets is dependent upon the generation of a sufficient level of future taxable income and recoverable taxes paid in prior years. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets will be realized. The Company’s policy is to recognize interest and penalties on unrecognized tax benefits in income tax expense in the Consolidated Statements of Income.
Tax Credit Investments	The Company accounts for its investments in qualified affordable housing projects using the proportional amortization method. Under that method, the Company amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense.
Securities Sold Under Agreements to Repurchase	Securities Sold Under Agreements to Repurchase Securities sold under agreements to repurchase (repurchase agreements) are agreements in which the Company transfers the underlying securities to a third-party custodian’s account that explicitly recognizes the Company’s interest in the securities. The agreements are accounted for as secured financing transactions provided the Company maintains effective control over the transferred securities and meets other criteria as specified in FASB ASC Topic 860, Transfers and Servicing (“ASC Topic 860”). The Company’s agreements are accounted for as secured financings; accordingly, the transaction proceeds are reflected as liabilities and the securities underlying the agreements continue to be carried in the Company’s securities portfolio.
Treasury Stock	Treasury Stock The cost of treasury stock is shown on the Consolidated Statements of Condition as a separate component of shareholders’ equity, and is a reduction to total shareholders’ equity. Shares are released from treasury at fair value, identified on an average cost basis.
Trust and Investment Services	Trust and Investment Services Assets held in fiduciary or agency capacities for customers are not included in the accompanying Consolidated Statements of Condition, since such items are not assets of the Company. Fees associated with providing trust and investment services are included in noninterest income.
Earnings Per Share	Earnings Per Share Basic earnings per share is calculated by dividing net income available to common shareholders by the weighted average number of shares outstanding during the year, exclusive of shares represented by the unvested portion of restricted stock and restricted stock units. Diluted earnings per share is calculated by dividing net income available to common shareholders by the weighted average number of shares outstanding during the year plus the dilutive effect of the unvested portion of restricted stock and restricted stock units and stock issuable upon conversion of common stock equivalents (primarily stock options) or certain other contingencies. The Company currently uses authoritative accounting guidance under ASC Topic 260, Earnings Per Share , which provides that unvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and shall be included in the computation of earnings per share pursuant to the two-class method. The Company issues stock-based compensation awards that included restricted stock awards that contain such rights.
Segment Reporting	Segment Reporting The Company manages its operations through three reportable business segments in accordance with the standards set forth in FASB ASC Topic 280, “Segment Reporting”. The three segments are: (i) banking (“Banking”), (ii) insurance (“Tompkins Insurance Agencies, Inc.”) and (iii) wealth management (“Tompkins Financial Advisors”). The Company’s insurance services and wealth management services are managed separately from the Bank.
Comprehensive Income (Loss)	Comprehensive Income (Loss) For the Company, comprehensive income (loss) represents net income plus the net change in unrealized gains or losses on securities available-for-sale for the period (net of taxes), and the actuarial gain or loss and amortization of unrealized amounts in the Company’s defined-benefit retirement and pension plan, supplemental employee retirement plan, and post-retirement life and healthcare benefit plan (net of taxes), and is presented in the Consolidated Statements of Comprehensive Income (Loss) and Consolidated Statements of Changes in Shareholders’ Equity. Accumulated other comprehensive income (loss) represents the net unrealized gains or losses on securities available-for-sale (net of tax) and unrecognized net actuarial gain or loss, unrecognized prior service costs, and unrecognized net initial obligation (net of tax) in the Company’s defined-benefit retirement and pension plan, supplemental employee retirement plan, and post-retirement life and healthcare benefit plan.
Pension and Other Employee Benefits	Pension and Other Employee Benefits The Company maintains noncontributory defined-benefit and defined contribution plans, which cover substantially all employees of the Company. In addition, the Company also maintains supplemental employee retirement plans for certain executives and a post-retirement life and healthcare plan. These plans are discussed in detail in Note 11 “Employee Benefit Plans”. The Company incurs certain employment-related expenses associated with these plans. In order to measure the expense associated with these plans, various assumptions are made including the discount rate used to value certain liabilities, expected return on plan assets, anticipated mortality rates, and expected future healthcare costs. The assumptions are based on historical experience as well as current facts and circumstances. A third-party actuarial firm is used to assist management in measuring the expense and liability associated with the plans. The Company uses a December 31 measurement date for its plans. As of the measurement date, plan assets are determined based on fair value, generally representing observable market prices. The projected benefit obligation is primarily determined based on the present value of projected benefit distributions at an assumed discount rate. The expenses associated with these plans are charged to current operating expenses. The Company recognizes an asset for a plan’s overfunded status or a liability for a plan’s underfunded status in the Company’s consolidated statements of condition, and recognizes changes in the funded status of these plans in comprehensive income, net of applicable taxes, in the year in which the change occurred.
Fair Value Measurements	Fair Value Measurements The Company accounts for the provisions of FASB ASC Topic 820, Fair Value Measurements and Disclosures (“ASC Topic 820”), for financial assets and financial liabilities. ASC Topic 820 defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles, and expands disclosures about fair value measurements. See Note 19 “Fair Value Measurements”. In general, fair values of financial instruments are based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and the Company’s creditworthiness, among others.
Revenue Recognition	Revenue Recognition Tompkins adopted Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers (Topic 606) as of January 1, 2018, the impact of which is discussed below. Under ASU 2014-09, the Company adopted new policies related to revenue recognition. In general, for revenue not associated with financial instruments, guarantees and lease contracts, the Company applies the following steps when recognizing revenue from contracts with customers: (i) identify the contract, (ii) identify the performance obligations, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations and (v) recognize revenue when a performance obligation is satisfied. Tompkins' contracts with customers are generally short term in nature, typically due within one year or less or cancellable by the Company or the Company's customer upon a short notice period. Performance obligations for the Company's customer contracts are generally satisfied at a single point in time, typically when the transaction is complete, or over time. For performance obligations satisfied over time, Tompkins primarily uses the output method, directly measuring the value of the products/services transferred to the customer, to determine when performance obligations have been satisfied. The Company typically receives payment from customers and recognizes revenue concurrent with the satisfaction of the Company's performance obligations. In most cases, this occurs within a single financial reporting period. For payments received in advance of the satisfaction of performance obligations, revenue recognition is deferred until such time as the performance obligations have been satisfied. In cases where the Company has not received payment despite satisfaction of the Company's performance obligations, the Company accrues an estimate of the amount due in the period the Company's performance obligations have been satisfied. For contracts with variable components, only amounts for which collection is probable are accrued. The Company generally acts in a principal capacity, on the Company's own behalf, in most of the Company's contracts with customers. In such transactions, Tompkins recognizes revenue and the related costs to provide the services on a gross basis in the Company's financial statements. In some cases, Tompkins acts in an agent capacity, deriving revenue through assisting other entities in transactions with the Company's customers. In such transactions, Tompkins recognizes revenue and the related costs to provide the services on a net basis in the Company's financial statements. These transactions recognized on a net basis primarily relate to insurance and brokerage commissions and fees derived from the Company's customers' use of various interchange and ATM/debit card networks.
Accounting Standards Updates	Accounting Standards Updates In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers” ("ASC 606") . The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies generally will be required to use more judgment and make more estimates than under current guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. For financial reporting purposes, the standard allows for either full retrospective adoption, meaning the standard is applied to all of the periods presented, or modified retrospective adoption, meaning the standard is applied only to the most current period presented in the financial statements with the cumulative effect of initially applying the standard recognized at the date of initial application. Since the guidance does not apply to revenue associated with financial instruments, including loans and securities that are accounted for under other GAAP, the new guidance did not have a material impact on revenue most closely associated with financial instruments, including interest income and expense. The Company completed its overall assessment of revenue streams and review of related contracts potentially affected by the ASU, including trust and asset management fees, deposit related fees, interchange fees, merchant income, and annuity and insurance commissions. On January 1, 2018, the Company adopted ASC 606 using the modified retrospective method for all contracts. Results for reporting periods beginning January 1, 2018 are presented under ASC 606, while prior period amounts were not adjusted and continue to be reported in accordance with the Company’s historic accounting under Topic 605, Revenue Recognition. The Company recorded a net increase to beginning retained earnings of $1.8 million as of January 1, 2018 due to the cumulative impact of adopting ASC 606. The impact on beginning retained earnings was primarily driven by the recognition of $1.8 million of contingency income related to our insurance business segment. The adoption of ASC 606 did not have a significant impact on the Company’s consolidated financial statements as of and for the twelve months ended December 31, 2018 and, as a result, comparisons of revenues and operating profit performance between periods are not significantly affected by the adoption of this ASU. Refer to Note 14 "Revenue Recognition" for additional disclosures required by ASC 606. In January 2016, the FASB issued ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities.” This ASU addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments by making targeted improvements to GAAP as follows: (1) require equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer; (2) simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. When a qualitative assessment indicates that impairment exists, an entity is required to measure the investment at fair value; (3) eliminate the requirement to disclose the fair value of financial instruments measured at amortized cost for entities that are not public business entities; (4) eliminate the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet; (5) require public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (6) require an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (7) require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements; and (8) clarify that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets. The Company adopted ASU No. 2016-01 effective January 1, 2018, and recognized a cumulative-effect adjustment of $65,000 for the after-tax impact of the unrealized loss on equity securities. In addition, the Company measured the fair value of its loan portfolio as of December 31, 2018 using an exit price notion. Refer to Note 19 - "Fair Value". In August 2016, the FASB issued ASU No. 2016-15, “Classification of Certain Cash Receipts and Cash Payments.” ASU 2016-15 provides guidance related to certain cash flow issues in order to reduce the current and potential future diversity in practice. The Company adopted ASU No. 2016-15 on January 1, 2018. ASU No. 2016-15 did not have a material impact on the Company’s consolidated financial statements. In February 2017, the FASB issued ASU 2017-05, “Other Income - Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20) - Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets.” ASU 2017-05 clarifies the scope of Subtopic 610-20 and adds guidance for partial sales of nonfinancial assets, including partial sales of real estate. Historically, U.S. GAAP contained several different accounting models to evaluate whether the transfer of certain assets qualified for sale treatment. ASU 2017-05 reduces the number of potential accounting models that might apply and clarifies which model does apply in various circumstances. The Company adopted ASU No. 2017-05 on January 1, 2018. ASU No. 2017-15 did not have a material impact on the Company’s consolidated financial statements. In March 2017, the FASB issued ASU No. 2017-07, “Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.” Under the new guidance, employers are required to present the service cost component of the net periodic benefit cost in the same income statement line item (e.g., Salaries and Benefits) as other employee compensation costs arising from services rendered during the period. In addition, only the service cost component will be eligible for capitalization in assets. Employers will present the other components of net periodic benefit cost separately (e.g., Other Noninterest Expense) from the line item that includes the service cost. ASU No. 2017-07 is effective for interim and annual reporting periods beginning after December 15, 2017. Employers will apply the guidance on the presentation of the components of net periodic benefit cost in the income statement retrospectively. The guidance limiting the capitalization of net periodic benefit cost in assets to the service cost component will be applied prospectively. The Company adopted ASU No. 2017-07 on January 1, 2018 and utilized the ASU’s practical expedient allowing entities to estimate amounts for comparative periods using the information previously disclosed in their pension and other postretirement benefit plan footnote. ASU No. 2017-07 did not have a material impact on the Company’s consolidated financial statements. In May 2017, the FASB issued ASU 2017-09, “Compensation-Stock Compensation (Topic 718)- Scope of Modification Accounting.” ASU 2017-09 clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. Under ASU 2017-09, an entity will not apply modification accounting to a share-based payment award if all of the following are the same immediately before and after the change: (i) the award's fair value, (ii) the award's vesting conditions and (iii) the award's classification as an equity or liability instrument. ASU 2017-09 became effective for us on January 1, 2018 and did not have a significant impact on our consolidated financial statements. ASU 2018-02, "Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income" was issued to address a narrow-scope financial reporting issue that arose as a consequence of the change in the tax law. On December 22, 2017, the U.S. federal government enacted a tax bill, H.R.1, An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018 (Tax Cuts and Jobs Act of 2017). ASU 2018-02 allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the newly enacted federal corporate income tax rate. The amount of the reclassification would be the difference between the historical corporate income tax rate of 35 percent and the newly enacted 21 percent corporate income tax rate. ASU 2018-02 is effective for all entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years with early adoption permitted, including adoption in any interim period, for (i) public business entities for reporting periods for which financial statements have not yet been issued and (ii) all other entities for reporting periods for which financial statements have not yet been made available for issuance. The changes are applied retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act of 2017 is recognized. The Company early adopted ASU 2018-02 in 2017, which resulted in the reclassification from accumulated other comprehensive income (loss) to retained earnings totaling $10.0 million , reflected in the consolidated statements of changes in shareholders' equity. ASU 2018-05, "Income Taxes (Topic 740) - Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin (SAB) No. 118." ASU 2018-05 amends the Accounting Standards Codification to incorporate various SEC paragraphs pursuant to the issuance of SAB 118. SAB 118 addresses the application of generally accepted accounting principles in situations when a registrant does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the Tax Cuts and Jobs Act of 2017. See Note 15 - "Income Taxes". ASU 2016-02,“Leases (Topic 842).” ASU 2016-02 will, among other things, require lessees to recognize a lease liability, which is a lessee‘s obligation to make lease payments arising from a lease, measured on a discounted basis; and a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. ASU 2016-02 does not significantly change lease accounting requirements applicable to lessors; however, certain changes were made to align, where necessary, lessor accounting with the lessee accounting model and ASC Topic 606, “Revenue from Contracts with Customers.” ASU 2016-2 will be effective for Tompkins on January 1, 2019 and will require transition using a modified retrospective approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The Company occupies certain banking offices and uses certain equipment under noncancelable operating lease agreements, which currently are not reflected in its consolidated statement of condition. Tompkins has prepared an inventory of its leases and evaluated the impact of this ASU on these leases. Upon adoption of the guidance, the Company expects to report increased assets and increased liabilities as a result of recognizing right-of-use assets and lease liabilities on its consolidated statement of condition. ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” ASU 2016-13 requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts and requires enhanced disclosures related to the significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, ASU 2016-13 amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 will be effective on January 1, 2020. Tompkins is currently evaluating the requirements of the new guidance to determine what modifications to our existing allowance methodology may be required. The Company has formed a cross-functional committee that is assessing our data and system needs and developing a CECL compliant model while gathering the requisite data. The Company expects that the new guidance will likely result in an increase in the allowance; however, Tompkins is unable to quantify the impact at this time since we are still reviewing the guidance. The extent of any impact to our allowance will depend, in part, upon the composition of our loan portfolio at the adoption date as well as economic conditions and loss forecasts at that date. The guidance of ASU 2016-13 was recently amended by ASU 2018-19, “Codification Improvements to Topic 326, Financial Instruments - Credit Losses,” which changed the effective date for non-public companies and clarified that operating lease receivables are not within the scope of the standard. ASU 2017-04, “Intangibles - Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment.” ASU 2017-04 eliminates Step 2 from the goodwill impairment test which required entities to compute the implied fair value of goodwill. Under ASU 2017-04, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. ASU 2017-04 will be effective for us on January 1, 2020, with early adoption permitted for interim or annual impairment tests beginning in 2017. Tompkins is currently evaluating the potential impact of ASU 2017-04 on our consolidated financial statements. ASU 2017-08 “Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20) - Premium Amortization on Purchased Callable Debt Securities.” ASU 2017-08 shortens the amortization period for certain callable debt securities held at a premium to require such premiums to be amortized to the earliest call date unless applicable guidance related to certain pools of securities is applied to consider estimated prepayments. Under prior guidance, entities were generally required to amortize premiums on individual, non-pooled callable debt securities as a yield adjustment over the contractual life of the security. ASU 2017-08 does not change the accounting for callable debt securities held at a discount. ASU 2017-08 became effective for us on January 1, 2019 and is not expected to have a significant impact on our consolidated financial statements. ASU 2017-12, “Derivatives and Hedging (Topic 815) - Targeted Improvements to Accounting for Hedging Activities.” ASU 2017-12 amends the hedge accounting recognition and presentation requirements in ASC 815 to improve the transparency and understandability of information conveyed to financial statement users about an entity’s risk management activities to better align the entity’s financial reporting for hedging relationships with those risk management activities and to reduce the complexity of and simplify the application of hedge accounting. ASU 2017-12 became effective for us on January 1, 2019 and is not expected to have a significant impact on our consolidated financial statements. ASU 2018-13, “Fair Value Measurement (Topic 820) - Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement.” ASU 2018-13 modifies the disclosure requirements on fair value measurements in Topic 820. The amendments in this update remove disclosures that no longer are considered cost beneficial, modify/clarify the specific requirements of certain disclosures, and add disclosure requirements identified as relevant. ASU 2018-13 will be effective for us on January 1, 2020, with early adoption permitted, and is not expected to have a significant impact on our consolidated financial statements. ASU 2018-14, “Compensation - Retirement Benefits-Defined Benefit Plans-General (Subtopic 715-20).” ASU 2018-14 amends and modifies the disclosure requirements for employers that sponsor defined benefit pension or other post-retirement plans. The amendments in this update remove disclosures that no longer are considered cost beneficial, clarify the specific requirements of disclosures, and add disclosure requirements identified as relevant. ASU 2018-14 will be effective for us on January 1, 2021, with early adoption permitted, and is not expected to have a significant impact on our consolidated financial statements. ASU 2018-15, “Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40) - Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract.” ASU 2018-15 clarifies certain aspects of ASU 2015-05, “Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement,” which was issued in April 2015. Specifically, ASU 2018-15 aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). ASU 2018-15 does not affect the accounting for the service element of a hosting arrangement that is a service contract. ASU 2018-15 will be effective for us on January 1, 2020, with early adoption permitted. Tompkins is currently evaluating the potential impact of ASU 2018-15 on our consolidated financial statements. ASU 2018-16, “Derivatives and Hedging (Topic 815) - Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes.” The amendments in this update permit use of the OIS rate based on SOFR as a U.S. benchmark interest rate for hedge accounting purposes under Topic 815 in addition to the interest rates on direct U.S. Treasury obligations, the LIBOR swap rate, the OIS rate based on the Fed Funds Effective Rate and the Securities Industry and Financial Markets Association (SIFMA) Municipal Swap Rate. ASU 2018-16 became effective for us on January 1, 2019 and is not expected to have a significant impact on our consolidated financial statements.

Securities (Tables)

Securities (Tables)	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Schedule of available for sale, debt securities	The following tables summarize available-for-sale securities held by the Company at December 31, 2018 and 2017 : Available-for-Sale Securities December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) U.S. Treasuries $ 289 $ 0 $ 0 $ 289 Obligations of U.S. Government sponsored entities $ 493,371 $ 80 $ 7,553 $ 485,898 Obligations of U.S. states and political subdivisions 86,260 113 933 85,440 Mortgage-backed securities – residential, issued by U.S. Government agencies 131,831 168 3,732 128,267 U.S. Government sponsored entities 649,620 537 19,599 630,558 Non-U.S. Government agencies or sponsored entities 31 0 0 31 U.S. corporate debt securities 2,500 0 325 2,175 Total available-for-sale securities $ 1,363,902 $ 898 $ 32,142 $ 1,332,658
Schedule of available for sale securities	Available-for-Sale Securities December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) Obligations of U.S. Government sponsored entities $ 507,248 $ 278 $ 3,333 $ 504,193 Obligations of U.S. states and political subdivisions 91,659 281 421 91,519 Mortgage-backed securities – residential, issued by U.S. Government agencies 139,747 659 2,671 137,735 U.S. Government sponsored entities 667,767 1,045 12,634 656,178 Non-U.S. Government agencies or sponsored entities 75 0 0 75 U.S. corporate debt securities 2,500 0 338 2,162 Total debt securities 1,408,996 2,263 19,397 1,391,862 Equity securities 1,000 0 87 913 Total available-for-sale securities $ 1,409,996 $ 2,263 $ 19,484 $ 1,392,775
Schedule of held to maturity securities	The following tables summarize held-to-maturity securities held by the Company at December 31, 2018 and 2017 : Held-to-Maturity Securities December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) Obligations of U.S. Government sponsored entities $ 131,306 $ 0 $ 1,198 $ 130,108 Obligations of U.S. states and political subdivisions 9,273 20 24 9,269 Total held-to-maturity debt securities $ 140,579 $ 20 $ 1,222 $ 139,377 Held-to-Maturity Securities Held-to-Maturity Securities December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (in thousands) Obligations of U.S. Government sponsored entities $ 131,707 $ 1,103 $ 90 $ 132,720 Obligations of U.S. states and political subdivisions 7,509 93 7 7,595 Total held-to-maturity debt securities $ 139,216 $ 1,196 $ 97 $ 140,315
Schedule of debt securities, available for sale with unrealized losses	The following table summarizes available-for-sale securities that had unrealized losses at December 31, 2018 : December 31, 2018 Available-for-Sale Securities Less than 12 Months 12 Months or Longer Total (in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Obligations of U.S. Government sponsored entities $ 21,660 $ 183 $ 449,141 $ 7,370 $ 470,801 $ 7,553 Obligations of U.S. states and political subdivisions 11,971 19 49,756 914 61,727 933 Mortgage-backed securities – residential, issued by U.S. Government agencies 16,854 22 96,247 3,710 113,101 3,732 U.S. Government sponsored entities 61,163 662 512,216 18,937 573,379 19,599 U.S. corporate debt securities 0 0 2,175 325 2,175 325 Total available-for-sale securities $ 111,648 $ 886 $ 1,109,535 $ 31,256 $ 1,221,183 $ 32,142
Schedule of available for sale securities with unrealized losses	The following table summarizes available-for-sale securities that had unrealized losses at December 31, 2017 : December 31, 2017 Available-for-Sale Securities Less than 12 Months 12 Months or Longer Total (in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Obligations of U.S. Government sponsored entities $ 319,545 $ 2,301 $ 39,791 $ 1,032 $ 359,336 $ 3,333 Obligations of U.S. states and political subdivisions 39,571 219 11,729 202 51,300 421 Mortgage-backed securities – residential, issued by U.S. Government agencies 33,056 452 86,562 2,219 119,618 2,671 U.S. Government sponsored entities 208,524 1,941 410,767 10,693 619,291 12,634 U.S. corporate debt securities 0 0 2,163 338 2,163 338 Equity securities 0 0 913 87 913 87 Total available-for-sale securities $ 600,696 $ 4,913 $ 551,925 $ 14,571 $ 1,152,621 $ 19,484
Schedule held-to-maturity securities with unrealized losses	The following table summarizes held-to-maturity securities that had unrealized losses at December 31, 2017 : Held-to-Maturity Securities Less than 12 Months 12 Months or Longer Total (in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Obligations of U.S. Government sponsored entities $ 20,505 $ 90 $ 0 $ 0 $ 20,505 $ 90 Obligations of U.S. sponsored entities 5,094 7 0 0 5,094 7 Total held-to-maturity securities $ 25,599 $ 97 $ 0 $ 0 $ 25,599 $ 97 The following table summarizes held-to-maturity securities that had unrealized losses at December 31, 2018 : Held-to-Maturity Securities Less than 12 Months 12 Months or Longer Total (in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Obligations of U.S. Government sponsored entities $ 4,980 $ 9 $ 125,128 $ 1,189 $ 130,108 $ 1,198 Obligations of U.S. sponsored entities 8,127 24 0 0 8,127 24 Total held-to-maturity securities $ 13,107 $ 33 $ 125,128 $ 1,189 $ 138,235 $ 1,222
Schedule of amortized cost and estimated fair value of debt securities by contractual maturity	The amortized cost and estimated fair value of debt securities by contractual maturity are shown in the following table. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Mortgage-backed securities are shown separately since they are not due at a single maturity date. December 31, 2018 (in thousands) Amortized Cost Fair Value Available-for-sale securities: Due in one year or less $ 78,160 $ 77,930 Due after one year through five years 355,499 350,470 Due after five years through ten years 139,560 136,734 Due after ten years 9,201 8,668 Total 582,420 573,802 Mortgage-backed securities 781,482 758,856 Total available-for-sale debt securities $ 1,363,902 $ 1,332,658 December 31, 2017 (in thousands) Amortized Cost Fair Value Available-for-sale securities: Due in one year or less $ 51,909 $ 51,932 Due after one year through five years 368,846 367,377 Due after five years through ten years 162,061 160,374 Due after ten years 18,591 18,191 Total 601,407 597,874 Mortgage-backed securities 807,589 793,988 Total available-for-sale debt securities $ 1,408,996 $ 1,391,862 December 31, 2018 (in thousands) Amortized Cost Fair Value Held-to-maturity securities: Due in one year or less $ 8,850 $ 8,832 Due after one year through five years 86,520 85,645 Due after five years through ten years 45,209 44,900 Due after ten years 0 0 Total held-to-maturity debt securities $ 140,579 $ 139,377 December 31, 2017 (in thousands) Amortized Cost Fair Value Held-to-maturity securities: Due in one year or less $ 5,980 $ 5,979 Due after one year through five years 51,936 52,227 Due after five years through ten years 81,300 82,109 Due after ten years 0 0 Total held-to-maturity debt securities $ 139,216 $ 140,315
Schedule of Realized Gain (Loss) [Table Text Block]	The following table sets forth information with regard to sales transactions of securities available-for-sale: Year ended December 31, (in thousands) 2018 2017 2016 Proceeds from sales $ 70,652 $ 64,106 $ 97,296 Gross realized gains 327 19 894 Gross realized losses (767 ) (426 ) 0 Net (losses) gains on sales of available-for-sale securities $ (440 ) $ (407 ) $ 894

Allowance for Loan and Lease _2

Allowance for Loan and Lease Losses (Tables)	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
Schedule of originated and acquired loan and lease losses by portfolio segment	Changes in the allowance for loan and lease losses for the twelve months ended December 31, 2018, 2017 and 2016 are summarized as follows: (in thousands) 2018 2017 2016 Total allowance at beginning of year $ 39,771 $ 35,755 $ 32,004 Provisions charged to operations 3,942 4,161 4,321 Recoveries on loans and leases 2,137 2,429 2,139 Charge-offs on loans and leases (2,440 ) (2,574 ) (2,709 ) Total allowance at end of year $ 43,410 $ 39,771 $ 35,755 The following tables detail activity in the allowance for originated and acquired loan and lease losses by portfolio segment for the twelve months ended December 31, 2018 and 2017 . December 31, 2018 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Allowance for originated loans and leases: Beginning balance $ 11,812 $ 20,412 $ 6,161 $ 1,301 $ 0 $ 39,686 Charge-offs (293 ) (60 ) (424 ) (1,350 ) 0 (2,127 ) Recoveries 50 812 324 679 0 1,865 Provision (352 ) 2,319 1,256 674 0 3,897 Ending Balance $ 11,217 $ 23,483 $ 7,317 $ 1,304 $ 0 $ 43,321 December 31, 2018 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Allowance for acquired loans: Beginning balance $ 25 $ 0 $ 54 $ 6 $ 0 $ 85 Charge-offs (41 ) (82 ) (190 ) 0 0 (313 ) Recoveries 106 31 135 0 0 272 Provision (35 ) 51 29 0 0 45 Ending Balance $ 55 $ 0 $ 28 $ 6 $ 0 $ 89 December 31, 2017 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Allowance for originated loans and leases: Beginning balance $ 9,389 $ 19,836 $ 5,149 $ 1,224 $ 0 $ 35,598 Charge-offs (291 ) (21 ) (584 ) (960 ) 0 (1,856 ) Recoveries 119 980 212 405 0 1,716 Provision 2,595 (383 ) 1,384 632 0 4,228 Ending Balance $ 11,812 $ 20,412 $ 6,161 $ 1,301 $ 0 $ 39,686 December 31, 2017 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Allowance for acquired loans: Beginning balance $ 0 $ 97 $ 54 $ 6 $ 0 $ 157 Charge-offs (74 ) (159 ) (483 ) (2 ) 0 (718 ) Recoveries 24 637 44 8 0 713 Provision 75 (575 ) 439 (6 ) 0 (67 ) Ending Balance $ 25 $ 0 $ 54 $ 6 $ 0 $ 85
Schedule of the allowance for loan and lease losses based on impairment methodology	At December 31, 2018 and 2017 , the allocation of the allowance for loan and lease losses summarized on the basis of the Company’s impairment methodology was as follows: December 31, 2018 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Allowance for originated loans and leases: Individually evaluated for impairment $ 397 $ 3,365 $ 0 $ 0 $ 0 $ 3,762 Collectively evaluated for impairment 10,820 20,118 7,317 1,304 0 39,559 Ending balance $ 11,217 $ 23,483 $ 7,317 $ 1,304 $ 0 $ 43,321 Allowance for acquired loans: Individually evaluated for impairment $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 Collectively evaluated for impairment 55 0 28 6 0 89 Ending balance $ 55 $ 0 $ 28 $ 6 $ 0 $ 89 December 31, 2017 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Allowance for originated loans and leases: Individually evaluated for impairment $ 441 $ 0 $ 0 $ 0 $ 0 $ 441 Collectively evaluated for impairment 11,371 20,412 6,161 1,301 0 39,245 Ending balance $ 11,812 $ 20,412 $ 6,161 $ 1,301 $ 0 $ 39,686 Allowance for acquired loans: Individually evaluated for impairment $ 25 $ 0 $ 0 $ 0 $ 0 $ 25 Collectively evaluated for impairment 0 0 54 6 0 60 Ending balance $ 25 $ 0 $ 54 $ 6 $ 0 $ 85
Schedule of recorded investment in loans and leases impairment methodology	The recorded investment in loans and leases summarized on the basis of the Company’s impairment methodology as of December 31, 2018 and December 31, 2017 was as follows: December 31, 2018 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Originated loans and leases: Individually evaluated for impairment $ 1,864 $ 8,388 $ 3,915 $ 0 $ 0 $ 14,167 Collectively evaluated for impairment 1,032,059 2,153,181 1,288,346 70,228 14,556 4,558,370 Total $ 1,033,923 $ 2,161,569 $ 1,292,261 $ 70,228 $ 14,556 $ 4,572,537 December 31, 2018 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Acquired loans: Individually evaluated for impairment $ 32 $ 842 $ 2,564 $ 0 $ 0 $ 3,438 Loans acquired with deteriorated credit quality 153 5,852 5,031 0 0 11,036 Collectively evaluated for impairment 43,527 172,398 34,038 761 0 250,724 Total $ 43,712 $ 179,092 $ 41,633 $ 761 $ 0 $ 265,198 December 31, 2017 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Originated loans and leases: Individually evaluated for impairment $ 1,759 $ 6,626 $ 3,965 $ 0 $ 0 $ 12,350 Collectively evaluated for impairment 1,038,916 1,986,354 1,247,887 62,358 14,467 4,349,982 Total $ 1,040,675 $ 1,992,980 $ 1,251,852 $ 62,358 $ 14,467 $ 4,362,332 December 31, 2017 (in thousands) Commercial and Industrial Commercial Real Estate Residential Real Estate Consumer and Other Finance Leases Total Acquired loans: Individually evaluated for impairment $ 276 $ 1,372 $ 1,823 $ 0 $ 0 $ 3,471 Loans acquired with deteriorated credit quality 506 7,481 3,975 0 0 11,962 Collectively evaluated for impairment 50,194 198,894 45,291 765 0 295,144 Total $ 50,976 $ 207,747 $ 51,089 $ 765 $ 0 $ 310,577
Schedule of recorded investments in impaired loans	The recorded investment on impaired loans as of December 31, 2018 , and 2017 was as follows: December 31, 2018 December 31, 2017 (in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance Originated loans and leases with no related allowance Commercial and industrial Commercial and industrial other $ 183 $ 271 $ 0 $ 1,246 $ 1,250 $ 0 Commercial real estate Commercial real estate other 3,205 3,405 0 6,626 6,633 0 Residential real estate Home equity 3,915 4,168 0 3,965 4,049 0 Subtotal $ 7,303 $ 7,844 $ 0 $ 11,837 $ 11,932 $ 0 Originated loans and leases with related allowance Commercial and industrial Commercial and industrial other $ 5,183 $ 5,183 $ 3,365 $ 513 $ 532 $ 441 Commercial real estate Commercial real estate other 1,681 1,681 397 0 0 0 Subtotal 6,864 6,864 3,762 513 532 441 Total $ 14,167 $ 14,708 $ 3,762 $ 12,350 $ 12,464 $ 441 December 31, 2018 December 31, 2017 (in thousands) Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance Acquired loans with no related allowance Commercial and industrial Commercial and industrial other $ 32 $ 32 $ 0 $ 226 $ 226 $ 0 Commercial real estate Commercial real estate other 842 924 0 1,372 1,474 0 Residential real estate Home equity 2,564 2,696 0 1,823 1,854 0 Subtotal $ 3,438 $ 3,652 $ 0 $ 3,421 $ 3,554 $ 0 Acquired loans with related allowance Commercial and industrial Commercial and industrial other $ 0 $ 0 $ 0 $ 50 $ 50 $ 25 Subtotal 0 0 0 50 50 25 Total $ 3,438 $ 3,652 $ 0 $ 3,471 $ 3,604 $ 25 The average recorded investment and interest income recognized on impaired originated loans for the twelve months ended December 31, 2018 , 2017 , and 2016 was as follows: Twelve Months Ended December 31, 2018 2017 2016 (in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Originated loans and leases with no related allowance Commercial and industrial Commercial and industrial other $ 1,979 $ 0 $ 718 $ 0 $ 249 $ 0 Commercial real estate Commercial real estate other 5,165 0 7,287 0 6,089 0 Residential real estate Home equity 3,983 0 3,551 0 3,003 0 Subtotal $ 11,127 $ 0 $ 11,556 $ 0 $ 9,341 $ 0 Originated loans and leases with related allowance Commercial and industrial Commercial and industrial other $ 1,374 $ 0 $ 276 $ 0 $ 114 $ 0 Commercial real estate Commercial real estate other 1,357 0 0 0 1,715 0 Subtotal $ 2,731 $ 0 $ 276 $ 0 $ 1,829 $ 0 Total $ 13,858 $ 0 $ 11,832 $ 0 $ 11,170 $ 0 The average recorded investment and interest income recognized on impaired acquired loans for the twelve months ended December 31, 2018 , 2017 and 2016 was as follows: Twelve Months Ended December 31, 2018 2017 2016 (in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Acquired loans with no related allowance Commercial and industrial Commercial and industrial other $ 50 $ 0 $ 111 $ 0 $ 183 $ 0 Commercial real estate Construction 0 0 0 0 152 0 Commercial real estate other 999 0 2,141 0 4,141 0 Residential real estate Home equity 2,945 0 1,861 0 1,316 0 Subtotal $ 3,994 $ 0 $ 4,113 $ 0 $ 5,792 $ 0 Acquired loans with related allowance Commercial and industrial Commercial and industrial other $ 0 $ 0 $ 10 $ 0 $ 0 $ 0 Commercial real estate Commercial real estate other 0 0 0 0 58 0 Subtotal $ 0 $ 0 $ 10 $ 0 $ 58 $ 0 Total $ 3,994 $ 0 $ 4,123 $ 0 $ 5,850 $ 0
Schedule of troubled debt restructurings	The following tables present loans by class modified in 2018 and 2017 as troubled debt restructurings. Troubled Debt Restructuring December 31, 2018 Twelve months ended Defaulted TDRs 3 (in thousands) Number Pre-Modification Post- Number Post- Commercial real estate Commercial real estate other 1 1 26 26 0 0 Residential real estate Home equity 2 6 $ 507 $ 507 0 $ 0 Total 7 $ 533 $ 533 0 $ 0 1 Represents the following concessions: extension of term and reduction of rate. 2 Represents the following concessions: extension of term and reduction of rate. 3 TDRs that defaulted during the 12 months ended December 31, 2018 that had been restructured in the prior twelve months. December 31, 2017 Twelve months ended Defaulted TDRs 2 (in thousands) Number Pre-Modification Post- Number Post- Residential real estate Home equity 1 6 $ 716 $ 716 1 $ 55 Total 6 $ 716 $ 716 1 $ 55 1 Represents the following concessions: extension of term and reduction of rate. 2 TDRs that defaulted during the 12 months ended December 31, 2017 that had been restructured in the prior twelve months.
Schedule of credit quality indicators on loans by class of commercial and industrial loans and commercial real estate loans	The following table presents credit quality indicators (internal risk grade) by class of commercial loans, commercial real estate loans and agricultural loans as of December 31, 2018 and 2017 . December 31, 2018 (in thousands) Commercial and Industrial Other Commercial and Industrial Agriculture Commercial Real Estate Other Commercial Real Estate Agriculture Commercial Real Estate Construction Total Originated loans and leases Internal risk grade: Pass $ 910,476 $ 93,939 $ 1,797,599 $ 157,156 $ 164,285 $ 3,123,455 Special Mention 8,675 4,951 9,484 4,964 0 28,074 Substandard 7,278 8,604 20,196 7,885 0 43,963 Total $ 926,429 $ 107,494 $ 1,827,279 $ 170,005 $ 164,285 $ 3,195,492 December 31, 2018 (in thousands) Commercial and Industrial Other Commercial and Industrial Agriculture Commercial Real Estate Other Commercial Real Estate Agriculture Commercial Real Estate Construction Total Acquired loans Internal risk grade: Pass $ 43,447 $ 0 $ 174,383 $ 224 $ 1,384 $ 219,438 Special Mention 0 0 452 0 0 452 Substandard 265 0 2,649 0 0 2,914 Total $ 43,712 $ 0 $ 177,484 $ 224 $ 1,384 $ 222,804 December 31, 2017 (in thousands) Commercial and Industrial Other Commercial and Industrial Agriculture Commercial Real Estate Other Commercial Real Estate Agriculture Commercial Real Estate Construction Total Originated loans and leases Internal risk grade: Pass $ 919,214 $ 100,470 $ 1,627,713 $ 119,392 $ 201,948 $ 2,968,737 Special Mention 6,680 8,068 19,068 9,980 538 44,334 Substandard 6,173 70 14,001 340 0 20,584 Total $ 932,067 $ 108,608 $ 1,660,782 $ 129,712 $ 202,486 $ 3,033,655 December 31, 2017 (in thousands) Commercial and Industrial Other Commercial and Industrial Agriculture Commercial Real Estate Other Commercial Real Estate Agriculture Commercial Real Estate Construction Total Acquired loans Internal risk grade: Pass $ 50,554 $ 0 $ 198,822 $ 247 $ 1,480 $ 251,103 Special Mention 0 0 2,265 0 0 2,265 Substandard 422 0 4,933 0 0 5,355 Total $ 50,976 $ 0 $ 206,020 $ 247 $ 1,480 $ 258,723
Schedule of credit quality indicators by class of residential real estate and consumer loans	The following table presents credit quality indicators by class of residential real estate loans and by class of consumer loans as of December 31, 2018 and 2017 . Nonperforming loans include nonaccrual, impaired and loans 90 days past due and accruing interest, all other loans are considered performing. December 31, 2018 (in thousands) Residential Home Equity Residential Mortgages Consumer Indirect Consumer Other Total Originated loans and leases Performing $ 206,675 $ 1,076,032 $ 12,508 $ 57,486 $ 1,352,701 Nonperforming 1,784 7,770 155 79 9,788 Total $ 208,459 $ 1,083,802 $ 12,663 $ 57,565 $ 1,362,489 December 31, 2018 (in thousands) Residential Home Equity Residential Mortgages Consumer Indirect Consumer Other Total Acquired Loans and Leases Performing $ 19,735 $ 19,380 $ 0 $ 761 $ 39,876 Nonperforming 1,414 1,104 0 0 2,518 Total $ 21,149 $ 20,484 $ 0 $ 761 $ 42,394 December 31, 2017 (in thousands) Residential Home Equity Residential Mortgages Consumer Indirect Consumer Other Total Originated loans and leases Performing $ 211,275 $ 1,032,932 $ 11,866 $ 50,138 $ 1,306,211 Nonperforming 1,537 6,108 278 76 7,999 Total $ 212,812 $ 1,039,040 $ 12,144 $ 50,214 $ 1,314,210 December 31, 2017 (in thousands) Residential Home Equity Residential Mortgages Consumer Indirect Consumer Other Total Acquired loans Performing $ 26,840 $ 21,531 $ 0 $ 765 $ 49,136 Nonperforming 1,604 1,114 0 0 2,718 Total $ 28,444 $ 22,645 $ 0 $ 765 $ 51,854

Loans and Leases (Tables)

Loans and Leases (Tables)	12 Months Ended
	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Abstract]
Schedule of loans and leases	Loans and Leases at December 31, 2018 and December 31, 2017 were as follows: December 31, 2018 December 31, 2017 (in thousands) Originated Acquired Total Loans and Leases Originated Acquired Total Loans and Leases Commercial and industrial Agriculture $ 107,494 $ 0 $ 107,494 $ 108,608 $ 0 $ 108,608 Commercial and industrial other 926,429 43,712 970,141 932,067 50,976 983,043 Subtotal commercial and industrial 1,033,923 43,712 1,077,635 1,040,675 50,976 1,091,651 Commercial real estate Construction 164,285 1,384 165,669 202,486 1,480 203,966 Agriculture 170,005 224 170,229 129,712 247 129,959 Commercial real estate other 1,827,279 177,484 2,004,763 1,660,782 206,020 1,866,802 Subtotal commercial real estate 2,161,569 179,092 2,340,661 1,992,980 207,747 2,200,727 Residential real estate Home equity 208,459 21,149 229,608 212,812 28,444 241,256 Mortgages 1,083,802 20,484 1,104,286 1,039,040 22,645 1,061,685 Subtotal residential real estate 1,292,261 41,633 1,333,894 1,251,852 51,089 1,302,941 Consumer and other Indirect 12,663 0 12,663 12,144 0 12,144 Consumer and other 57,565 761 58,326 50,214 765 50,979 Subtotal consumer and other 70,228 761 70,989 62,358 765 63,123 Leases 14,556 0 14,556 14,467 0 14,467 Total loans and leases 4,572,537 265,198 4,837,735 4,362,332 310,577 4,672,909 Less: unearned income and deferred costs and fees (3,796 ) 0 (3,796 ) (3,789 ) 0 (3,789 ) Total loans and leases, net of unearned income and deferred costs and fees $ 4,568,741 $ 265,198 $ 4,833,939 $ 4,358,543 $ 310,577 $ 4,669,120
Schedule of outstanding principal and carrying amount of loans acquired	The outstanding principal balance and the related carrying amount of the Company’s loans acquired in the VIST Acquisition were as follows at December 31: (in thousands) December 31, 2018 December 31, 2017 Acquired Credit Impaired Loans Outstanding principal balance $ 12,822 $ 14,337 Carrying amount 11,036 11,962 Acquired Non-Credit Impaired Loans Outstanding principal balance 256,265 301,128 Carrying amount 254,162 298,615 Total Acquired Loans Outstanding principal balance $ 269,087 $ 315,465 Carrying amount $ 265,198 $ 310,577
Schedule of loans to related parties	Loan transactions with related parties at December 31 are summarized as follows: (in thousands) 2018 2017 Balance at beginning of year $ 14,503 $ 11,662 New Directors/Executive Officers 467 0 New loans and advancements 30,570 3,972 Loan payments (5,945 ) (1,131 ) Balance at end of year $ 39,595 $ 14,503
Schedule of age analysis of past due loans	The below table is an aging analysis of past due loans, segregated by originated and acquired loan and lease portfolios, and by class of loans, as of December 31, 2018 and 2017 . December 31, 2018 (in thousands) 30-89 days 90 days or more Current Loans Total Loans 90 days and accruing 1 Nonaccrual Originated Loans and Leases Commercial and industrial Agriculture $ 0 $ 0 $ 107,494 $ 107,494 $ 0 $ 0 Commercial and industrial other 2,367 1,659 922,403 926,429 0 1,861 Subtotal commercial and industrial 2,367 1,659 1,029,897 1,033,923 0 1,861 Commercial real estate Construction 0 0 164,285 164,285 0 0 Agriculture 71 0 169,934 170,005 0 0 Commercial real estate other 1,201 1,856 1,824,222 1,827,279 0 7,691 Subtotal commercial real estate 1,272 1,856 2,158,441 2,161,569 0 7,691 Residential real estate Home equity 986 1,026 206,447 208,459 0 1,784 Mortgages 2,693 4,027 1,077,082 1,083,802 0 7,770 Subtotal residential real estate 3,679 5,053 1,283,529 1,292,261 0 9,554 Consumer and other Indirect 333 59 12,271 12,663 0 155 Consumer and other 187 24 57,354 57,565 0 79 Subtotal consumer and other 520 83 69,625 70,228 0 234 Leases 0 0 14,556 14,556 0 0 Total loans and leases 7,838 8,651 4,556,048 4,572,537 0 19,340 Less: unearned income and deferred costs and fees 0 0 (3,796 ) (3,796 ) 0 0 Total originated loans and leases, net of unearned income and deferred costs and fees $ 7,838 $ 8,651 $ 4,552,252 $ 4,568,741 $ 0 $ 19,340 Acquired Loans and Leases Commercial and industrial Commercial and industrial other $ 0 $ 10 $ 43,702 $ 43,712 $ 10 $ 22 Subtotal commercial and industrial 0 10 43,702 43,712 10 22 Commercial real estate Construction 0 0 1,384 1,384 0 0 Agriculture 0 0 224 224 0 0 Commercial real estate other 0 839 176,645 177,484 525 316 Subtotal commercial real estate 0 839 178,253 179,092 525 316 Residential real estate Home equity 46 803 20,300 21,149 59 1,414 Mortgages 18 969 19,497 20,484 722 1,104 Subtotal residential real estate 64 1,772 39,797 41,633 781 2,518 Consumer and other Consumer and other 3 0 758 761 0 0 Subtotal consumer and other 3 0 758 761 0 0 Total acquired loans and leases, net of unearned income and deferred costs and fees $ 67 $ 2,621 $ 262,510 $ 265,198 $ 1,316 $ 2,856 1 Includes acquired loans that were recorded at fair value at the acquisition date. December 31, 2017 (in thousands) 30-89 days 90 days or more Current Loans Total Loans 90 days and accruing 1 Nonaccrual Originated loans and leases Commercial and industrial Agriculture $ 0 $ 0 $ 108,608 $ 108,608 $ 0 $ 0 Commercial and industrial other 431 849 930,787 932,067 0 2,852 Subtotal commercial and industrial 431 849 1,039,395 1,040,675 0 2,852 Commercial real estate Construction 0 0 202,486 202,486 0 0 Agriculture 0 0 129,712 129,712 0 0 Commercial real estate other 1,583 2,125 1,657,074 1,660,782 0 5,402 Subtotal commercial real estate 1,583 2,125 1,989,272 1,992,980 0 5,402 Residential real estate Home equity 1,045 448 211,319 212,812 0 1,537 Mortgages 3,153 2,692 1,033,195 1,039,040 0 6,108 Subtotal residential real estate 4,198 3,140 1,244,514 1,251,852 0 7,645 Consumer and other Indirect 449 205 11,490 12,144 6 278 Consumer and other 130 42 50,042 50,214 38 76 Subtotal consumer and other 579 247 61,532 62,358 44 354 Leases 0 0 14,467 14,467 0 0 Total loans and leases 6,791 6,361 4,349,180 4,362,332 44 16,253 Less: unearned income and deferred costs and fees 0 0 (3,789 ) (3,789 ) 0 0 Total originated loans and leases, net of unearned income and deferred costs and fees $ 6,791 $ 6,361 $ 4,345,391 $ 4,358,543 $ 44 $ 16,253 Acquired loans and leases Commercial and industrial Commercial and industrial other $ 12 $ 61 $ 50,903 $ 50,976 $ 61 $ 0 Subtotal commercial and industrial 12 61 50,903 50,976 61 0 Commercial real estate Construction 0 0 1,480 1,480 0 0 Agriculture 0 0 247 247 0 0 Commercial real estate other 167 727 205,126 206,020 515 546 Subtotal commercial real estate 167 727 206,853 207,747 515 546 Residential real estate Home equity 601 564 27,279 28,444 130 1,604 Mortgages 472 942 21,231 22,645 440 1,114 Subtotal residential real estate 1,073 1,506 48,510 51,089 570 2,718 Consumer and other Consumer and other 4 0 761 765 0 0 Subtotal consumer and other 4 0 761 765 0 0 Total acquired loans and leases, net of unearned income and deferred costs and fees $ 1,256 $ 2,294 $ 307,027 $ 310,577 $ 1,146 $ 3,264 1 Includes acquired loans that were recorded at fair value at the acquisition date.

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of goodwill	(in thousands) Banking Insurance Wealth Management Total Balance at January 1, 2017 $ 64,369 $ 20,043 $ 8,211 $ 92,623 Goodwill related to sale of portion of business unit 1 0 (332 ) 0 (332 ) Balance at December 31, 2017 $ 64,369 $ 19,711 $ 8,211 $ 92,291 Goodwill related to sale of portion of business unit 1 0 (8 ) 0 (8 ) Balance at December 31, 2018 $ 64,369 $ 19,703 $ 8,211 $ 92,283 1 The $8,000 and $332,000 reduction of goodwill in 2018 and 2017 , respectively, reflects an adjustment related to the sale of a portion of insurance revenues. In 2017 , Tompkins Insurance sold a portion of its personal lines insurance revenues, which had been acquired in a previous acquisition, to a third party. In 2018, Tompkins Insurance adjusted the goodwill related to the sale in 2017.
Schedule of amortizing intangible assets	The following table provides information regarding the Company's amortizing intangible assets: December 31, 2018 Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in thousands) Amortized intangible assets: Core deposit intangible $ 18,774 $ 15,386 $ 3,388 Customer relationships 8,877 5,888 2,989 Other intangibles 5,983 4,732 1,251 Total intangible assets $ 33,634 $ 26,006 $ 7,628 December 31, 2017 Gross Carrying Amount Accumulated Amortization Net Carrying Amount (in thousands) Amortized intangible assets: Core deposit intangible $ 18,774 $ 14,302 $ 4,472 Customer relationships 8,878 5,339 3,539 Other intangibles 5,776 4,524 1,252 Total intangible assets $ 33,428 $ 24,165 $ 9,263
Schedule of estimated amortization expense	The estimated aggregate future amortization expense for intangible assets remaining as of December 31, 2018 is as follows: Estimated amortization expense:* (in thousands) For the year ended December 31, 2019 $ 1,671 For the year ended December 31, 2020 1,472 For the year ended December 31, 2021 1,307 For the year ended December 31, 2022 864 For the year ended December 31, 2023 302 *Excludes the amortization of mortgage servicing rights. Amortization of mortgage servicing rights was $69,000 in 2018 , $122,000 in 2017 and $157,000 in 2016 .

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Schedule of premise and equipment	Premises and equipment at December 31 were as follows: (in thousands) 2018 2017 Land $ 9,348 $ 9,245 Premises and equipment 103,850 95,272 Furniture, fixtures, and equipment 73,013 68,023 Accumulated depreciation and amortization (89,009 ) (85,545 ) Total $ 97,202 $ 86,995
Schedule of depreciation and amortization	Depreciation and amortization expenses in 2018 , 2017 and 2016 are included in operating expenses as follows: (in thousands) 2018 2017 2016 Premises $ 2,989 $ 2,527 $ 2,247 Furniture, fixtures, and equipment 4,615 4,297 4,004 Total $ 7,604 $ 6,824 $ 6,251
Schedule of future minimum lease payments	The following is a summary of the future minimum lease payments under non-cancelable operating leases as of December 31, 2018 : (in thousands) 2019 $ 4,790 2020 3,995 2021 3,644 2022 3,429 2023 3,386 Thereafter 13,023 Total $ 32,267

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Schedule of maturities of time deposits	Scheduled maturities of time deposits at December 31, 2018 , were as follows: (in thousands) Less than $250,000 $250,000 and over Total Maturity Three months or less $ 101,415 $ 58,522 $ 159,937 Over three through six months 98,889 28,693 127,582 Over six through twelve months 147,865 41,685 189,550 Total due in 2019 $ 348,169 $ 128,900 $ 477,069 2020 62,821 12,926 75,747 2021 45,530 11,918 57,448 2022 16,124 2,584 18,708 2023 7,991 258 8,249 Thereafter 74 0 74 Total $ 480,709 $ 156,586 $ 637,295

Securities Sold Under Agreeme_2

Securities Sold Under Agreements to Repurchase and Federal Funds Purchased (Tables)	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Schedule of securities sold under agreements to repurchase	Information regarding securities sold under agreements to repurchase and Federal funds purchased is detailed in the following tables for the years ended December 31: Securities Sold Under Agreements to Repurchase 2018 2017 2016 (dollar amounts in thousands) Total outstanding at December 31 $ 81,842 $ 75,177 $ 69,062 Maximum month-end balance 81,842 80,326 125,063 Average balance during the year 63,472 64,888 99,622 Weighted average rate at December 31 0.22 % 0.23 % 0.88 % Average interest rate paid during the year 0.24 % 0.36 % 2.24 % Federal Funds Purchased Average balance during the year 0 0 0 Weighted average rate at December 31 N/A N/A N/A Average interest rate paid during the year 0.00 % 0.00 % 0.00 %

Other Borrowings (Tables)

Other Borrowings (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Schedule of borrowings	The following table summarized the Company’s borrowings as of December 31: (in thousands) 2018 2017 Overnight FHLB advances $ 647,075 $ 587,742 Term FHLB advances 425,000 475,000 Other 4,000 9,000 Total other borrowings $ 1,076,075 $ 1,071,742

Trust Preferred Debentures (Tab

Trust Preferred Debentures (Tables)	12 Months Ended
	Dec. 31, 2018
Trust Preferred Debentures
Schedule of information related to trusts	The following table provides information relating to the Trusts as of December 31, 2018 : Description Issuance Date Par Amount Interest Rate Maturity Date Sleepy Hollow Capital Trust I August 2003 $4.0 million 3-month LIBOR plus 3.05% August 2033 Leesport Capital Trust II September 2002 $10.0 million 3-month LIBOR plus 3.45% September 2032 Madison Statutory Trust I June 2003 $5.0 million 3-month LIBOR plus 3.10% June 2033

Employee Benefits Plans (Tables

Employee Benefits Plans (Tables)	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Schedule of changes in the projected benefit obligations	The following table sets forth the changes in the projected benefit obligation for the DB Pension Plan and SERPs and the accumulated post-retirement benefit obligation for the Life and Healthcare Plan; and the respective plan assets, and the plans’ funded status and amounts recognized in the Company’s Consolidated Statements of Condition at December 31, 2018 and 2017 (the measurement dates of the plans). DB Pension Plans Life and Healthcare Plan SERP Plan (in thousands) 2018 2017 2018 2017 2018 2017 Change in benefit obligation: Benefit obligation at beginning of year $ 82,748 $ 77,304 $ 8,995 $ 9,121 $ 26,142 $ 23,399 Service cost 0 0 212 192 160 166 Interest cost 2,508 2,501 270 268 833 852 Plan participants’ contributions 0 0 122 98 0 0 Amendments 0 0 0 (964 ) 0 0 Curtailments 0 0 0 0 0 0 Actuarial loss (gain) (2,324 ) 5,928 (1,337 ) 708 (2,987 ) 2,407 Benefits paid (3,243 ) (2,985 ) (405 ) (428 ) (609 ) (682 ) Benefit obligation at end of year $ 79,689 $ 82,748 $ 7,857 $ 8,995 $ 23,539 $ 26,142 Change in plan assets: Fair value of plan assets at beginning of year $ 80,154 $ 71,807 $ 0 $ 0 $ 0 $ 0 Actual return on plan assets (4,437 ) 9,582 0 0 0 0 Plan participants’ contributions 0 0 122 98 0 0 Employer contributions 0 1,750 283 330 609 682 Benefits paid (3,243 ) (2,985 ) (405 ) (428 ) (609 ) (682 ) Fair value of plan assets at end of year $ 72,474 $ 80,154 $ 0 $ 0 $ 0 $ 0 Unfunded status $ (7,215 ) $ (2,594 ) $ (7,857 ) $ (8,995 ) $ (23,539 ) $ (26,142 )
Schedule of net periodic benefit cost and other comprehensive income	Net periodic benefit cost and other comprehensive income (loss) includes the following components: (in thousands) DB Pension Plans Life and Healthcare Plan SERP Plan Components of net periodic benefit cost 2018 2017 2016 2018 2017 2016 2018 2017 2016 Service cost $ 0 $ 0 $ 0 $ 212 $ 192 $ 258 $ 160 $ 166 $ 171 Interest cost 2,508 2,501 2,473 270 268 283 833 852 832 Expected return on plan assets (5,648 ) (5,088 ) (4,844 ) 0 0 0 0 0 0 Amortization of prior service (credit) cost (10 ) (10 ) (15 ) (62 ) (62 ) 16 87 87 75 Recognized net actuarial loss 1,118 1,075 975 62 34 5 539 399 358 Net periodic benefit (credit) cost $ (2,032 ) $ (1,522 ) $ (1,411 ) $ 482 $ 432 $ 562 $ 1,619 $ 1,504 $ 1,436 Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss) Net actuarial loss (gain) $ 7,761 $ 1,434 $ 1,880 $ (1,337 ) $ 708 $ 210 $ (2,987 ) $ 2,407 $ 697 Recognized actuarial loss (1,118 ) (1,075 ) (975 ) (62 ) (34 ) (5 ) (539 ) (399 ) (358 ) Prior service credit 0 0 0 0 (964 ) 0 0 0 188 Recognized prior service cost (credit) 10 10 15 62 62 (16 ) (87 ) (87 ) (75 ) Recognized in other comprehensive income (loss) $ 6,653 $ 369 $ 920 $ (1,337 ) $ (228 ) $ 189 $ (3,613 ) $ 1,921 $ 452 Total recognized in net periodic benefit cost and other comprehensive income $ 4,621 $ (1,153 ) $ (491 ) $ (855 ) $ 204 $ 751 $ (1,994 ) $ 3,425 $ 1,888
Schedule of pre-tax amounts recognized as a component of accumulated other comprehensive income	Pre-tax amounts recognized as a component of accumulated other comprehensive income (loss) as of year-end that have not been recognized as a component of the Company’s combined net periodic benefit cost of the Company’s DB Pension Plan, Life and Healthcare Plan and SERPs are presented in the following table. (in thousands) DB Pension Plans Life and Healthcare Plan SERP Plan 2018 2017 2016 2018 2017 2016 2018 2017 2016 Net actuarial loss (gain) $ 46,603 $ 39,960 $ 39,601 $ 368 $ 1,767 $ 1,093 $ 5,560 $ 9,086 $ 7,077 Prior service cost (credit) (20 ) (30 ) (40 ) (606 ) (668 ) 235 514 602 689 Total $ 46,583 $ 39,930 $ 39,561 $ (238 ) $ 1,099 $ 1,328 $ 6,074 $ 9,688 $ 7,766
Schedule of pre-tax amounts expected to be recognized	The pre-tax amounts included in accumulated other comprehensive income (loss) that are expected to be recognized in net periodic pension cost during the fiscal year ended December 31, 2019 are shown below. (in thousands) Pension Plans Life and Healthcare Plan SERP Plan Actuarial loss 1,305 0 286 Prior service cost (10 ) (62 ) 87 Total 1,295 (62 ) 373
Schedule of weighted-average assumptions	Weighted-average assumptions used in accounting for the plans were as follows: (in thousands) DB Pension Plans Life and Healthcare Plan SERP Plan 2018 2017 2016 2018 2017 2016 2018 2017 2016 Discount Rates Benefit Cost for Plan Year 3.43 % 3.89 % 4.05 % 3.51 % 3.97 % 4.14 % 3.55 % 4.10 % 4.32 % Benefit Obligation at End of Plan Year 4.08 % 3.43 % 3.89 % 4.13 % 3.51 % 3.97 % 4.16 % 3.55 % 4.10 % Expected long-term return on plan assets 7.25 % 7.25 % 7.25 % N/A N/A N/A N/A N/A N/A Rate of compensation increase Benefit Cost for Plan Year N/A N/A N/A 5.00 % 5.00 % 5.00 % 5.00 % 5.00 % 5.00 % Benefit Obligation at End of Plan Year N/A N/A N/A 4.00 % 5.00 % 5.00 % 5.00 % 5.00 % 5.00 %
Schedule of expected benefits to be paid in each of next five years	The benefits as of December 31, 2018 , expected to be paid in each of the next five fiscal years, and in the aggregate for the five fiscal years thereafter were as follows: (in thousands) DB Pension Plans Life and Healthcare Plan SERP Plan 2019 $ 3,950 $ 529 $ 673 2020 4,067 477 697 2021 4,210 430 688 2022 4,280 416 740 2023 4,463 439 845 2024-2028 23,686 2,162 4,475 Total $ 44,656 $ 4,453 $ 8,118
Schedule of weighted average asset allocation of plans	The Company’s DB Pension Plan’s weighted-average asset allocations at December 31, 2018 and 2017 , respectively, by asset category are as follows: 2018 2017 Equity securities 65 % 65 % Debt securities 34 % 34 % Other 1 % 1 % Total Allocation 100 % 100 %
Schedule of fair value measurement of pension plan	The major categories of assets in the Company’s DB Pension Plan as of year-end are presented in the following table. Assets are segregated by the level of valuation inputs within the fair value hierarchy established by ASC Topic 820 utilized to measure fair value (see Note 19-Fair Value Measurements). Fair Value Measurements December 31, 2018 (in thousands) Fair Value 2018 (Level 1) (Level 2) (Level 3) Cash and cash equivalents $ 1,018 $ 1,018 $ 0 $ 0 Common stocks 20,648 20,648 0 0 Mutual funds 50,808 50,808 0 0 Total Fair Value of Plan Assets $ 72,474 $ 72,474 $ 0 $ 0 Fair Value Measurements December 31, 2017 (in thousands) Fair Value 2017 (Level 1) (Level 2) (Level 3) Cash and cash equivalents $ 448 $ 448 $ 0 $ 0 Common stocks 24,994 24,994 0 0 Mutual funds 54,712 54,712 0 0 Total Fair Value of Plan Assets $ 80,154 $ 80,154 $ 0 $ 0

Stock Plans and Stock Based C_2

Stock Plans and Stock Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of stock options and stock appreciation rights	The following table presents the activity related to stock options and SARs under all plans for the year ended December 2018 . Number of Shares/Rights Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Outstanding at January 1, 2018 269,506 $ 47.34 Granted 0 0.00 Exercised (33,745 ) 41.22 Forfeited (10,386 ) 52.53 Outstanding at December 31, 2018 225,375 $ 48.02 4.56 $ 6,118,933 Exercisable at December 31, 2018 139,483 $ 44.06 3.56 $ 4,326,073
Schedule of intrinsic value of options, SARs, and restricted stock	Net cash proceeds, tax benefits and intrinsic value related to total stock options, SARs, and restricted stock exercised is as follows: (in thousands) 2018 2017 2016 Proceeds from stock option exercises $ (540 ) $ (641 ) $ (806 ) Tax benefits related to stock option exercises 680 1,634 1,433 Intrinsic value of stock option exercises 1,447 3,139 3,718
Schedule of total stock options exercised	Net cash proceeds, tax benefits and intrinsic value related to total stock options, SARs, and restricted stock exercised is as follows: (in thousands) 2018 2017 2016 Proceeds from stock option exercises $ (540 ) $ (641 ) $ (806 ) Tax benefits related to stock option exercises 680 1,634 1,433 Intrinsic value of stock option exercises 1,447 3,139 3,718
Schedule of valuation model estimates fair value based on the assumptions	2018 2017 2016 Weighted per share average fair value at grant date N/A N/A $ 12.88 Risk-free interest rate N/A N/A 1.57 % Expected dividend yield N/A N/A 3.00 % Volatility N/A N/A 24.58 % Expected life (years) N/A N/A 5.5
Schedule of options outstanding	December 31, 2018 Options and SARs Outstanding Options and SARs Exercisable Range of Exercise Prices Number Outstanding Weighted Average Remaining Contractual Life Weighted Average Exercise Price Number Exercisable Weighted Average Exercise Price $35.71-37.50 42,598 2.62 $ 37.00 42,598 $ 37.00 $37.51-41.00 33,623 4.27 $ 40.60 19,444 $ 40.60 $41.01-50.00 90,478 3.93 $ 46.43 59,900 $ 45.01 $50.01-76.90 58,454 7.10 $ 62.64 17,485 $ 61.75 $76.91-86.18 222 7.89 $ 86.18 56 $ 86.18 225,375 4.56 $ 48.02 139,483 $ 44.06
Schedule of restricted stock awards	The following table presents activity related to restricted stock awards for the twelve months ended December 31, 2018 . Number of Shares Weighted Average Fair Value Unvested at January 1, 2018 261,373 $ 61.32 Granted 65,785 75.44 Vested (53,667 ) 53.71 Forfeited (18,252 ) 61.81 Unvested at December 31, 2018 255,239 $ 66.52

Other Noninterest Income and _2

Other Noninterest Income and Expense (Tables)	12 Months Ended
	Dec. 31, 2018
Other Income and Expenses [Abstract]
Schedule of other income and operating expense	Other income and operating expense totals are presented in the table below. Components of these totals exceeding 1% , and other significant items, of the aggregate of total other noninterest income and total other noninterest expenses for any of the years presented below are stated separately. Year ended December 31, (in thousands) 2018 2017 2016 NONINTEREST INCOME Other service charges $ 3,263 $ 2,982 $ 2,671 Increase in cash surrender value of corporate owned life insurance 1,818 2,196 2,106 Net gain on sale of loans 458 50 95 Gain (loss) on sale of fixed assets 2,954 30 (7 ) Other miscellaneous income 4,637 2,373 1,426 Total other noninterest income $ 13,130 $ 7,631 $ 6,291 NONINTEREST EXPENSES Marketing expense $ 5,495 $ 5,013 $ 5,087 Professional fees 8,564 5,725 5,446 Technology expense 10,099 8,332 7,011 Cardholder expense 3,277 3,391 2,503 Other miscellaneous expenses 20,868 20,537 17,187 Total other noninterest expenses $ 48,303 $ 42,998 $ 37,234

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Disaggregation of Noninterest Income	The following presents noninterest income, segregated by revenue streams in-scope and out-of-scope of ASC 606, for the year ended December 31, 2018 and 2017 . Year Ended (dollars in thousands) 12/31/2018 12/31/2017 Noninterest Income In-scope of Topic 606: Commissions and Fees $ 27,272 $ 26,412 Installment Billing 6 0 Refund of Commissions (29 ) 0 Contract Liabilities/Deferred Revenue (181 ) (253 ) Contingent commissions 2,301 2,619 Subtotal Insurance Revenues 29,369 28,778 Trust and Asset Management 11,848 10,049 Mutual Fund & Investment Income 5,440 5,616 Subtotal Investment Service Income 17,288 15,665 Service Charges on Deposit Accounts 8,435 8,437 Card Services Income 9,693 9,100 Other 1,176 1,111 Noninterest Income (in-scope of ASC 606) 65,961 63,091 Noninterest Income (out-of-scope of ASC 606) 1 11,488 6,113 Total Noninterest Income $ 77,449 $ 69,204 1 The period ending December 31, 2018 includes approximately $2.9 million related to gain on sale of fixed assets.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Schedule of income tax (benefit) expense attributable to income from operations	The income tax expense (benefit) attributable to income from operations is summarized as follows: (in thousands) Current Deferred Total 2018 Federal $ 16,391 $ 2,281 $ 18,672 State 3,060 73 3,133 Total $ 19,451 $ 2,354 $ 21,805 2017 Federal $ 26,860 $ 14,749 $ 41,609 State 1,162 (151 ) 1,011 Total $ 28,022 $ 14,598 $ 42,620 2016 Federal $ 22,943 $ 1,551 $ 24,494 State 2,243 308 2,551 Total $ 25,186 $ 1,859 $ 27,045
Schedule of effective income tax rate reconciliation	The primary reasons for the differences between income tax expense and the amount computed by applying the statutory federal income tax rate to earnings are as follows: 2018 2017 2016 Statutory federal income tax rate 21.0 % 35.0 % 35.0 % State income taxes, net of federal benefit 2.4 0.7 1.9 Tax exempt income (1.5 ) (2.6 ) (2.7 ) Excess benefits from equity-based compensation (0.6 ) (1.6 ) (1.4 ) Bank-owned life insurance income (0.4 ) (0.8 ) (0.8 ) Federal tax credit (0.6 ) (2.0 ) (0.4 ) Enactment of Federal tax reform 0.0 15.7 0.0 All other 0.6 0.4 (0.3 ) Total 20.9 % 44.8 % 31.3 %
Schedule of deferred tax assets and liabilities	Significant components of the Company’s deferred tax assets and liabilities as of December 31 were as follows: (in thousands) 2018 2017 2016 Deferred tax assets: Allowance for loan and lease losses $ 10,676 $ 9,577 $ 13,737 Interest income on nonperforming loans 384 417 214 Compensation and benefits 10,885 10,406 14,504 Purchase accounting adjustments 0 0 527 Liabilities held at fair value 12 3 1 Other 2,333 2,515 3,088 Total $ 24,290 $ 22,918 $ 32,071 Deferred tax liabilities: Prepaid pension 8,700 8,140 11,439 Depreciation 4,193 2,686 3,006 Intangibles 971 776 882 Purchase accounting adjustments 328 194 0 Leases 1,790 1,145 1,687 Other 1,459 774 1,214 Total deferred tax liabilities $ 17,441 $ 13,715 $ 18,228 Net deferred tax asset at year-end $ 6,849 $ 9,203 $ 13,843 Net deferred tax asset at beginning of year $ 9,203 $ 13,843 $ 16,185 Decrease in net deferred tax asset (2,354 ) (4,640 ) (2,342 ) Purchase accounting adjustments, net 0 0 (483 ) Federal tax reform remeasurement of AOCI deferred tax asset $ 0 $ 9,958 $ 0 Deferred tax expense $ 2,354 $ 14,598 $ 1,859

Other Comprehensive Income (L_2

Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2018
Stockholders' Equity Note [Abstract]
Schedule of tax effect allocated to each component of other comprehensive income	The tax effect allocated to each component of other comprehensive income (loss) were as follows: December 31, 2018 Before-Tax Amount Tax (Expense) Benefit Net of Tax Available-for-sale securities: (in thousands) Change in net unrealized loss during the period $ (14,550 ) $ 3,569 $ (10,981 ) Reclassification adjustment for net realized loss on sale included in available-for-sale securities 440 (108 ) 332 Net unrealized losses (14,110 ) 3,461 (10,649 ) Employee benefit plans: Net retirement plan loss (3,437 ) 843 (2,594 ) Amortization of net retirement plan actuarial gain 1,719 (421 ) 1,298 Amortization of net retirement plan prior service (cost) credit 15 (4 ) 11 Employee benefit plans (1,703 ) 418 (1,285 ) Other comprehensive loss $ (15,813 ) $ 3,879 $ (11,934 ) December 31, 2017 Before-Tax Amount Tax (Expense) Benefit Net of Tax Available-for-sale securities: (in thousands) Change in net unrealized loss during the period $ (4,442 ) $ 1,761 $ (2,681 ) Reclassification adjustment for net realized loss on sale included in available-for-sale securities 407 (163 ) 244 Net unrealized losses (4,035 ) 1,598 (2,437 ) Employee benefit plans: Net retirement plan loss (4,549 ) 1,115 (3,434 ) Net retirement plan prior service credit 964 (236 ) 728 Amortization of net retirement plan actuarial gain 1,508 (603 ) 905 Amortization of net retirement plan prior service (cost) credit 15 (6 ) 9 Employee benefit plans (2,062 ) 270 (1,792 ) Other comprehensive loss $ (6,097 ) $ 1,868 $ (4,229 ) December 31, 2016 Before-Tax Amount Tax (Expense) Benefit Net of Tax Available-for-sale securities: (in thousands) Change in net unrealized loss during the period $ (7,689 ) $ 3,074 $ (4,615 ) Reclassification adjustment for net realized gain on sale included in available-for-sale securities (926 ) 370 (556 ) Net unrealized losses (8,615 ) 3,444 (5,171 ) Employee benefit plans: Net retirement plan loss (2,787 ) 1,114 (1,673 ) Net retirement plan prior service credit (188 ) 75 (113 ) Amortization of net retirement plan actuarial loss 1,338 (535 ) 803 Amortization of net retirement plan prior service (cost) credit 76 (30 ) 46 Employee benefit plans (1,561 ) 624 (937 ) Other comprehensive loss $ (10,176 ) $ 4,068 $ (6,108 )
Schedule of accumulated other comprehensive income	The following table presents the activity in our accumulated other comprehensive loss for the periods indicated: (in thousands) Available-for-Sale Employee Benefit Plans Accumulated Other Balance at January 1, 2016 $ (2,744 ) $ (28,257 ) $ (31,001 ) Other comprehensive loss (5,171 ) (937 ) (6,108 ) Balance at December 31, 2016 $ (7,915 ) $ (29,194 ) $ (37,109 ) Balance at January 1, 2017 (7,915 ) (29,194 ) (37,109 ) Other comprehensive loss (2,437 ) (1,792 ) (4,229 ) Balance at reclassification due to adoption of ASU 2018-02 $ (2,653 ) $ (7,305 ) $ (9,958 ) Balance at December 31, 2017 (13,005 ) (38,291 ) (51,296 ) Balance at January 1, 2018 (13,005 ) (38,291 ) (51,296 ) Other comprehensive loss (10,649 ) (1,285 ) (11,934 ) Adoption of ASU 2016-01 65 0 65 Balance at December 31, 2018 $ (23,589 ) $ (39,576 ) $ (63,165 ) December 31, 2018 Details about Accumulated other Comprehensive Income Components (in thousands) Amount Reclassified from Accumulated Other Comprehensive (Loss) 1 Affected Line Item in the Statement Where Net Income is Presented Available-for-sale securities: Unrealized gains and losses on available-for-sale securities $ (440 ) Net (loss) gain on securities transactions 108 Tax benefit (332 ) Net of tax Employee benefit plans: Amortization of the following 2 Net retirement plan actuarial gain (1,719 ) Other operating expense Net retirement plan prior service credit (15 ) Other operating expense (1,734 ) Total before tax 425 Tax benefit (1,309 ) Net of tax December 31, 2017 Details about Accumulated other Comprehensive Income Components (in thousands) Amount Reclassified from Accumulated Other Comprehensive (Loss) 1 Affected Line Item in the Statement Where Net Income is Presented Available-for-sale securities: Unrealized gains and losses on available-for-sale securities $ (407 ) Net (loss) gain on securities transactions 163 Tax benefit (244 ) Net of tax Employee benefit plans: Amortization of the following 2 Net retirement plan actuarial gain (1,508 ) Other operating expense Net retirement plan prior service credit (15 ) Other operating expense (1,523 ) Total before tax 609 Tax benefit (914 ) Net of tax 1 Amounts in parentheses indicate debits in income statement. 2 The accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost (See Note 11 - “Employee Benefit Plans”).

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule of maximum potential obligations to extend credit for loan commitments	The Company’s maximum potential obligations to extend credit for loan commitments (unfunded loans, unused lines of credit, and standby letters of credit) outstanding on December 31 were as follows: (in thousands) 2018 2017 Loan commitments $ 156,111 $ 148,611 Standby letters of credit 21,685 27,805 Undisbursed portion of lines of credit 819,252 815,188 Total $ 997,048 $ 991,604

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Schedule of basic and diluted earnings per share	Calculation of basic earnings per share (Basic EPS) and diluted earnings per share (Diluted EPS) is shown below. Year ended December 31, (in thousands, except share and per share data) 2018 2017 2016 Basic Net income available to common shareholders $ 82,308 $ 52,494 $ 59,340 Less: dividends and undistributed earnings allocated to unvested restricted stock awards (1,315 ) (818 ) (912 ) Net earnings allocated to common shareholders 80,993 51,676 58,428 Weighted average shares outstanding, including participating securities 15,283,914 15,193,438 15,044,733 Less: average participating securities (244,685 ) (243,006 ) (232,021 ) Weighted average shares outstanding - Basic 15,039,229 14,950,432 14,812,712 Diluted Net earnings allocated to common shareholders 80,993 51,676 58,428 Weighted average shares outstanding - Basic 15,039,229 14,950,432 14,812,712 Dilutive effect of common stock options or restricted stock awards 93,028 122,823 123,519 Weighted average shares outstanding - Diluted 15,132,257 15,073,255 14,936,231 Basic EPS $ 5.39 $ 3.46 $ 3.94 Diluted EPS $ 5.35 $ 3.43 $ 3.91

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of assets and liabilities measured at fair value on a recurring basis	Recurring Fair Value Measurements December 31, 2017 (in thousands) Fair Value (Level 1) (Level 2) (Level 3) Available-for-sale securities Obligations of U.S. Government sponsored entities 504,193 0 504,193 0 Obligations of U.S. states and political subdivisions 91,519 0 91,519 0 Mortgage-backed securities - residential U.S. Government agencies 137,735 0 137,735 0 U.S. Government sponsored entities 656,178 0 656,178 0 Non-U.S. Government agencies or sponsored entities 75 0 75 0 U.S. corporate debt securities 2,162 0 2,162 0 Total Available-for-sale securities 1,391,862 0 1,391,862 0 Equity securities 913 0 0 913 The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of December 31, 2018 and 2017 segregated by the level of valuation inputs within the fair value hierarchy used to measure fair value. Recurring Fair Value Measurements December 31, 2018 (in thousands) Fair Value (Level 1) (Level 2) (Level 3) Available-for-sale securities U.S. Treasuries $ 289 $ 0 $ 289 $ 0 Obligations of U.S. Government sponsored entities $ 485,898 $ 0 $ 485,898 $ 0 Obligations of U.S. states and political subdivisions 85,440 0 85,440 0 Mortgage-backed securities - residential U.S. Government agencies 128,267 0 128,267 0 U.S. Government sponsored entities 630,558 0 630,558 0 Non-U.S. Government agencies or sponsored entities 31 0 31 0 U.S. corporate debt securities 2,175 0 2,175 0 Total Available-for-sale securities 1,332,658 0 1,332,658 0 Equity securities 887 0 0 887
Schedule of assets and liabilities measured at fair value on a non recurring basis	Fair value measurements at reporting date using: Gain (losses) from fair value changes (in thousands) As of Quoted prices in active markets for identical assets Significant other observable inputs Significant unobservable inputs Twelve months ended Assets: 12/31/2018 (Level 1) (Level 2) (Level 3) 12/31/2018 Impaired loans $ 6,500 $ 0 $ 6,500 $ 0 $ (173 ) Other real estate owned 1,594 0 1,594 0 (211 ) Fair value measurements at reporting date using: Gain (losses) from fair value changes (in thousands) As of Quoted prices in active markets for identical assets Significant other observable inputs Significant unobservable inputs Twelve months ended Assets: 12/31/2017 (Level 1) (Level 2) (Level 3) 12/31/2017 Impaired loans $ 4,617 $ 0 $ 4,617 $ 0 $ (332 ) Other real estate owned 2,047 0 2,047 0 (532 )
Schedule of carrying amount and fair value of financial instruments	The following table presents the carrying amounts and estimated fair values of the Company’s financial instruments at December 31, 2018 and 2017 . The carrying amounts shown in the table are included in the Consolidated Statements of Condition under the indicated captions. The fair value estimates, methods and assumptions set forth below for the Company’s financial instruments, including those financial instruments carried at cost, are made solely to comply with disclosures required by generally accepted accounting principles in the United States and does not always incorporate the exit-price concept of fair value prescribed by ASC Topic 820-10 and should be read in conjunction with the financial statements and notes included in this Report. Estimated Fair Value of Financial Instruments December 31, 2018 (in thousands) Carrying Amount Fair Value (Level 1) (Level 2) (Level 3) Financial Assets: Cash and cash equivalents $ 80,389 $ 80,389 $ 80,389 $ 0 $ 0 Securities - held-to-maturity 140,579 139,377 0 139,377 0 FHLB and FRB stock 52,262 52,262 0 52,262 0 Accrued interest receivable 20,922 20,922 0 20,922 0 Loans and leases, net 1 4,790,529 4,649,308 0 6,500 4,642,808 Financial Liabilities: Time deposits $ 637,295 $ 631,489 $ 0 $ 631,489 $ 0 Other deposits 4,251,664 4,251,664 0 4,251,664 0 Securities sold under agreements to repurchase 81,842 81,842 0 81,842 0 Other borrowings 1,076,075 1,074,081 0 1,074,081 0 Trust preferred debentures 16,863 21,921 0 21,921 0 Accrued interest payable 2,408 2,408 0 2,408 0 1 Lease receivables, although excluded from the scope of ASC Topic 825, are included in the estimated fair value amounts at their carrying value. Estimated Fair Value of Financial Instruments December 31, 2017 (in thousands) Carrying Amount Fair Value (Level 1) (Level 2) (Level 3) Financial Assets: Cash and cash equivalents $ 84,303 $ 84,303 $ 84,303 $ 0 $ 0 Securities - held-to-maturity 139,216 140,315 0 140,315 0 FHLB and FRB stock 50,498 50,498 0 50,498 0 Accrued interest receivable 20,122 20,122 0 20,122 0 Loans and leases, net 1 4,632,288 4,555,720 0 4,617 4,551,103 Financial Liabilities: Time deposits $ 748,250 $ 744,310 $ 0 $ 744,310 $ 0 Other deposits 4,089,557 4,089,557 0 4,089,557 0 Securities sold under agreements to repurchase 75,177 75,177 0 75,177 0 Other borrowings 1,071,742 1,069,609 0 1,069,609 0 Trust preferred debentures 16,691 22,012 0 22,012 0 Accrued interest payable 2,054 2,054 0 2,054 0 1 Lease receivables, although excluded from the scope of ASC Topic 825, are included in the estimated fair value amounts at their carrying value.

Regulations and Supervision (Ta

Regulations and Supervision (Tables)	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Schedule of capital amounts and ratios	Actual capital amounts and ratios of the Company and its subsidiary banks are as follows: Actual Minimum Capital Required- Basel III Fully-Phased-In Required (dollar amounts in thousands) Amount/Ratio Amount/Ratio Amount/Ratio December 31, 2018 Total Capital (to risk-weighted assets) The Company (consolidated) $645,891 /13.1% $517,500 />10.5% $492,857 />10.0% Trust Company $191,872/13.9% $144,822 />10.5% $137,926 />10.0% Castile $138,816/11.7% $124,738 />10.5% $118,798 />10.0% Mahopac $126,342/12.7% $104,146 />10.5% $99,186 />10.0% VIST $158,557/11.7% $142,048 />10.5% $135,284 />10.0% Common Equity Tier 1 Capital (to risk-weighted assets) The Company (consolidated) $583,458/11.8% $345,000 />7.0% $320,357 />6.5% Trust Company $180,077/13.1% $96,548 />7.0% $89,652 />6.5% Castile $129,482/10.9% $83,159>7.0% $77,219 />6.5% Mahopac $114,327/11.5% $69,431 />7.0% $64,471 />6.5% VIST $146,131/10.8% $94,699 />7.0% $87,934 />6.5% Tier 1 Capital (to risk-weighted assets) The Company (consolidated) $600,321/12.2% $418,929 />8.5% $394,286 />8.0% Trust Company $180,077/13.1% $117,237 />8.5% $110,341 />8.0% Castile $129,482/10.9% $100,978 />8.5% $95,038 />8.0% Mahopac $114,327/11.5% $84,309 />8.5% $79,349 />8.0% VIST $146,131/10.8% $114,991 />8.5% $108,227 />8.0% Tier 1 Capital (to average assets) The Company (consolidated) $600,321/9.1% $265,465 />4.0% $331,832 />5.0% Trust Company $180,077/8.5% $84,592 />4.0% $105,740 />5.0% Castile $129,482/8.6% $60,368 />4.0% $75,460 />5.0% Mahopac $114,327/8.4% $54,219 />4.0% $67,773 />5.0% VIST $146,131/8.8% $66,282 />4.0% $82,853 />5.0% December 31, 2017 Total Capital (to risk-weighted assets) The Company (consolidated) $585,013 /12.3% $500,676 />10.5% $476,835 />10.0% Trust Company $171,774/12.5% $144,235 />10.5% $137,366 />10.0% Castile $125,510/11.3% $117,042 />10.5% $111,469 />10.0% Mahopac $117,740/12.1% $102,555 />10.5% $97,672 />10.0% VIST $148,185/11.4% $136,518 />10.5% $130,017 />10.0% Common Equity Tier 1 Capital (to risk-weighted assets) The Company (consolidated) $526,822/11.1% $333,784 />7.0% $309,943 />6.5% Trust Company $160,047/11.7% $96,156 />7.0% $89,288 />6.5% Castile $116,783/10.5% $78,028>7.0% $72,455 />6.5% Mahopac $105,979/10.9% $68,370 />7.0% $63,487 />6.5% VIST $138,901/10.7% $91,012 />7.0% $84,511 />6.5% Tier 1 Capital (to risk-weighted assets) The Company (consolidated) $543,514/11.4% $405,310 />8.5% $381,468 />8.0% Trust Company $160,047/11.7% $116,761 />8.5% $109,893 />8.0% Castile $116,783/10.5% $94,748 />8.5% $89,175 />8.0% Mahopac $105,979/10.9% $83,021 />8.5% $78,137 />8.0% VIST $138,901/10.7% $110,515 />8.5% $104,014 />8.0% Tier 1 Capital (to average assets) The Company (consolidated) $543,514/8.4% $257,887 />4.0% $322,359 />5.0% Trust Company $160,047/7.8% $82,425 />4.0% $103,031 />5.0% Castile $116,783/8.1% $57,833 />4.0% $72,292 />5.0% Mahopac $105,979/8.1% $52,463 />4.0% $65,578 />5.0% VIST $138,901/8.6% $64,647 />4.0% $80,809 />5.0%

Condensed Parent Company Only_2

Condensed Parent Company Only Financial Statements (Tables)	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
Schedule of condensed statements of condition	Condensed financial statements for Tompkins (the Parent Company) as of December 31, 2018, 2017 and 2016 are presented below. Condensed Statements of Condition (in thousands) 2018 2017 Assets Cash $ 6,235 $ 3,326 Investment in subsidiaries, at equity 625,193 586,976 Other 9,416 10,686 Total Assets $ 640,844 $ 600,988 Liabilities and Shareholders’ Equity Borrowings $ 4,000 $ 9,000 Trust preferred debentures issued to non-consolidated subsidiary 16,863 16,691 Other liabilities 522 517 Tompkins Financial Corporation Shareholders’ Equity 619,459 574,780 Total Liabilities and Shareholders’ Equity $ 640,844 $ 600,988
Schedule of condensed statements of income	Condensed Statements of Income (in thousands) 2018 2017 2016 Dividends received from subsidiaries 44,518 33,522 47,584 Other income 332 281 269 Total Operating Income 44,850 33,803 47,853 Interest expense 1,468 1,550 2,743 Other expenses 7,222 6,120 6,089 Total Operating Expenses 8,690 7,670 8,832 Income Before Taxes and Equity in Undistributed Earnings of Subsidiaries 36,160 26,133 39,021 Income tax benefit 1,687 1,867 3,549 Equity in undistributed earnings of subsidiaries 44,461 24,494 16,770 Net Income $ 82,308 $ 52,494 $ 59,340
Schedule of condensed statements of cash flows	Condensed Statements of Cash Flows (in thousands) 2018 2017 2016 Operating activities Net income $ 82,308 $ 52,494 $ 59,340 Adjustments to reconcile net income to net cash provided by operating activities Equity in undistributed earnings of subsidiaries (44,461 ) (24,494 ) (16,770 ) Other, net 1,014 (1,569 ) 1,826 Net Cash Provided by Operating Activities 38,861 26,431 44,396 Investing activities Other, net 0 1,052 24 Net Cash Provided by Investing Activities 0 1,052 24 Financing activities Borrowings, net (5,000 ) (28,161 ) 2,490 Cash dividends (29,634 ) (27,627 ) (26,603 ) Repurchase of common shares (2,448 ) 0 (1,166 ) Net proceeds from restricted stock awards (1,403 ) (1,294 ) (835 ) Shares issued for dividend reinvestment plans 0 2,872 3,201 Shares issued for employee stock ownership plan 3,073 2,296 1,938 Net proceeds from exercise of stock options (540 ) (641 ) (806 ) Net Cash Used in Financing Activities (35,952 ) (52,555 ) (21,781 ) Net (decrease) increase in cash 2,909 (25,072 ) 22,639 Cash at beginning of year 3,326 28,398 5,759 Cash at End of Year $ 6,235 $ 3,326 $ 28,398

Segment and Related Informati_2

Segment and Related Information (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Schedule of segment and related information	Summarized financial information concerning the Company’s reportable segments and the reconciliation to the Company’s consolidated results is shown in the following table. Investment in subsidiaries is netted out of the presentations below. The “Intercompany” column identifies the intercompany activities of revenues, expenses and other assets between the banking and financial services segments. The Company accounts for intercompany fees and services at an estimated fair value according to regulatory requirements for the services provided. Intercompany items relate primarily to the use of human resources, information systems, accounting and marketing services provided by any of the banks and the holding company. All other accounting policies are the same as those described in Note 1 “Summary of significant accounting policies” in this Report. As of and for the year ended December 31, 2018 (in thousands) Banking Insurance Wealth Management Intercompany Consolidated Interest income $ 251,592 $ 3 $ 0 $ (3 ) $ 251,592 Interest expense 39,795 0 0 (3 ) 39,792 Net interest income 211,797 3 0 0 211,800 Provision for loan and lease losses 3,942 0 0 0 3,942 Noninterest income 31,738 29,760 17,997 (2,046 ) 77,449 Noninterest expense 145,070 25,427 12,616 (2,046 ) 181,067 Income before income tax expense 94,523 4,336 5,381 0 104,240 Income tax expense 19,486 1,092 1,227 0 21,805 Net Income attributable to noncontrolling interests and Tompkins Financial Corporation 75,037 3,244 4,154 0 82,435 Less: Net income attributable to noncontrolling interests 127 0 0 0 127 Net Income attributable to Tompkins Financial Corporation $ 74,910 $ 3,244 $ 4,154 $ 0 $ 82,308 Depreciation and amortization $ 9,194 $ 230 $ 130 $ 0 $ 9,554 Assets 6,707,625 42,088 21,365 (12,642 ) 6,758,436 Goodwill 64,370 19,702 8,211 0 92,283 Other intangibles, net 4,224 3,192 212 0 7,628 Net loans and leases 4,790,529 0 0 0 4,790,529 Deposits 4,900,464 0 0 (11,505 ) 4,888,959 Total equity 568,988 32,996 18,887 0 620,871 As of and for the year ended December 31, 2017 (in thousands) Banking Insurance Wealth Management Intercompany & Merger Consolidated Interest income $ 226,764 $ 2 $ 0 $ (2 ) $ 226,764 Interest expense 25,462 0 0 (2 ) 25,460 Net interest income 201,302 2 0 0 201,304 Provision for loan and lease losses 4,161 0 0 0 4,161 Noninterest income 25,498 29,106 16,345 (1,745 ) 69,204 Noninterest expense 135,750 24,503 12,597 (1,745 ) 171,105 Income before income tax expense 86,889 4,605 3,748 0 95,242 Income tax expense 39,731 1,705 1,184 0 42,620 Net Income attributable to noncontrolling interests and Tompkins Financial Corporation 47,158 2,900 2,564 0 52,622 Less: Net income attributable to noncontrolling interests 128 0 0 0 128 Net Income attributable to Tompkins Financial Corporation $ 47,030 $ 2,900 $ 2,564 $ 0 $ 52,494 Depreciation and amortization $ 7,927 $ 285 $ 57 $ 0 $ 8,269 Assets 6,602,242 39,599 17,779 (11,330 ) 6,648,290 Goodwill 64,369 19,711 8,211 0 92,291 Other intangibles, net 5,170 3,812 281 0 9,263 Net loans and leases 4,629,349 0 0 0 4,629,349 Deposits 4,848,654 0 0 (10,847 ) 4,837,807 Total equity 530,386 31,083 14,733 0 576,202 As of and for the year ended December 31, 2016 (in thousands) Banking Insurance Wealth Management Intercompany & Merger Consolidated Interest income $ 202,739 $ 2 $ 0 $ (2 ) $ 202,739 Interest expense 22,105 0 0 (2 ) 22,103 Net interest income 180,634 2 0 0 180,636 Provision for loan and lease losses 4,321 0 0 0 4,321 Noninterest income 24,402 29,741 15,842 (1,177 ) 68,808 Noninterest expense 123,004 24,564 12,216 (1,177 ) 158,607 Income before income tax expense 77,711 5,179 3,626 0 86,516 Income tax expense 23,928 1,906 1,211 0 27,045 Net Income attributable to noncontrolling interests and Tompkins Financial Corporation 53,783 3,273 2,415 0 59,471 Less: Net income attributable to noncontrolling interests 131 0 0 0 131 Net Income attributable to Tompkins Financial Corporation $ 53,652 $ 3,273 $ 2,415 $ 0 $ 59,340 Depreciation and amortization 6,401 353 75 0 $ 6,829 Assets 6,190,824 38,988 15,403 (8,459 ) 6,236,756 Goodwill 64,369 20,043 8,211 0 92,623 Other intangibles, net 6,433 4,560 356 0 11,349 Net loans and leases 4,222,278 0 0 0 4,222,278 Deposits 4,633,527 0 0 (8,388 ) 4,625,139 Total equity 506,411 30,825 12,169 0 549,405
Quarterly financial information	Unaudited Quarterly Financial Data 2018 (in thousands) First Second Third Fourth Interest and dividend income $ 60,140 $ 62,143 $ 63,984 $ 65,325 Interest expense 7,453 9,429 10,821 12,089 Net interest income 52,687 52,714 53,163 53,236 Provision for loan and lease losses 567 1,045 272 2,058 Income before income taxes 26,229 27,842 26,361 23,808 Net income 20,436 22,059 20,902 18,911 Net income per common share (basic) 1.34 1.44 1.37 1.24 Net income per common share (diluted) 1.33 1.43 1.36 1.23 Unaudited Quarterly Financial Data 2017 (in thousands) First Second Third Fourth Interest and dividend income $ 53,621 $ 56,342 $ 57,772 $ 59,029 Interest expense 5,587 6,041 6,772 7,060 Net interest income 48,034 50,301 51,000 51,969 Provision for loan and lease losses 769 976 402 2,014 Income before income taxes 23,137 25,207 25,917 20,981 Net income 15,717 16,926 17,394 2,457 Net income per common share (basic) 1.04 1.11 1.14 0.16 Net income per common share (diluted) 1.03 1.11 1.14 0.16

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details) $ in Thousands	Jan. 01, 2018USD ($)	Dec. 31, 2018USD ($)segment	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Property, Plant and Equipment [Line Items]
Reserve requirements for banking subsidiaries		$ 6,600	$ 6,600
Investment in qualified affordable housing projects		$ 1,000	1,400
Number of reportable business segments | segment		3
Retained earnings		$ 319,396	265,007
Noninterest income		$ 77,449	69,204	$ 68,808
Reclassification due to the adoption of ASU No. 2018-02			0
Minimum | Core deposit intangible
Property, Plant and Equipment [Line Items]
Amortization period for other intangible assets (in years)		5 years
Minimum | Covenants Noncompete
Property, Plant and Equipment [Line Items]
Amortization period for other intangible assets (in years)		3 years
Minimum | Customer relationships
Property, Plant and Equipment [Line Items]
Amortization period for other intangible assets (in years)		6 years
Maximum | Core deposit intangible
Property, Plant and Equipment [Line Items]
Amortization period for other intangible assets (in years)		10 years
Maximum | Covenants Noncompete
Property, Plant and Equipment [Line Items]
Amortization period for other intangible assets (in years)		6 years
Maximum | Customer relationships
Property, Plant and Equipment [Line Items]
Amortization period for other intangible assets (in years)		15 years
Building | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful (in years)		10 years
Building | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful (in years)		39 years
Furniture, fixtures, and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful (in years)		2 years
Furniture, fixtures, and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful (in years)		20 years
Accounting Standards Update 2014-09
Property, Plant and Equipment [Line Items]
Adoption of ASU 2016-01	$ 1,780
Accounting Standards Update 2016-01
Property, Plant and Equipment [Line Items]
Adoption of ASU 2016-01	0
Accounting Standards Update 2018-02
Property, Plant and Equipment [Line Items]
Reclassification due to the adoption of ASU No. 2018-02			10,000
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
Property, Plant and Equipment [Line Items]
Retained earnings	1,800
Insurance Business Segment | Contingent Consideration | Difference between Revenue Guidance in Effect before and after Topic 606
Property, Plant and Equipment [Line Items]
Noninterest income	1,800
Accumulated Other Comprehensive (Loss) Income
Property, Plant and Equipment [Line Items]
Reclassification due to the adoption of ASU No. 2018-02			$ (9,958)
Accumulated Other Comprehensive (Loss) Income | Accounting Standards Update 2016-01
Property, Plant and Equipment [Line Items]
Adoption of ASU 2016-01	$ 65	$ 65

Securities - Available-for-Sale

Securities - Available-for-Sale Securities Held by Company (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,363,902	$ 1,408,996
Gross Unrealized Gains	898
Gross Unrealized Losses	32,142
Available-for-sale securities, at fair value	1,332,658	1,391,862
Amortized Cost		1,409,996
Gross Unrealized Gains		2,263
Gross Unrealized Losses		19,484
Fair Value		1,392,775
U.S. Treasuries
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	289
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Available-for-sale securities, at fair value	289
Obligations of U.S. Government sponsored entities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	493,371
Gross Unrealized Gains	80
Gross Unrealized Losses	7,553
Available-for-sale securities, at fair value	485,898
Amortized Cost		507,248
Gross Unrealized Gains		278
Gross Unrealized Losses		3,333
Fair Value		504,193
Obligations of U.S. states and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	86,260
Gross Unrealized Gains	113
Gross Unrealized Losses	933
Available-for-sale securities, at fair value	85,440
Amortized Cost		91,659
Gross Unrealized Gains		281
Gross Unrealized Losses		421
Fair Value		91,519
U.S. Government agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	131,831
Gross Unrealized Gains	168
Gross Unrealized Losses	3,732
Available-for-sale securities, at fair value	128,267
Amortized Cost		139,747
Gross Unrealized Gains		659
Gross Unrealized Losses		2,671
Fair Value		137,735
U.S. Government sponsored entities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	649,620
Gross Unrealized Gains	537
Gross Unrealized Losses	19,599
Available-for-sale securities, at fair value	630,558
Amortized Cost		667,767
Gross Unrealized Gains		1,045
Gross Unrealized Losses		12,634
Fair Value		656,178
Non-U.S. Government agencies or sponsored entities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	31
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Available-for-sale securities, at fair value	31
Amortized Cost		75
Gross Unrealized Gains		0
Gross Unrealized Losses		0
Fair Value		75
U.S. corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,500
Gross Unrealized Gains	0
Gross Unrealized Losses	325
Available-for-sale securities, at fair value	2,175
Amortized Cost		2,500
Gross Unrealized Gains		0
Gross Unrealized Losses		338
Fair Value		2,162
Debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	582,420	601,407
Available-for-sale securities, at fair value	$ 573,802	597,874
Amortized Cost		1,408,996
Gross Unrealized Gains		2,263
Gross Unrealized Losses		19,397
Fair Value		1,391,862
Equity securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		1,000
Gross Unrealized Gains		0
Gross Unrealized Losses		87
Fair Value		$ 913

Securities - Held-to-Maturity S

Securities - Held-to-Maturity Securities Held by Company (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 140,579	$ 139,216
Gross Unrealized Gains	20	1,196
Gross Unrealized Losses	1,222	97
Fair Value	139,377	140,315
Obligations of U.S. Government sponsored entities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	131,306	131,707
Gross Unrealized Gains	0	1,103
Gross Unrealized Losses	1,198	90
Fair Value	130,108	132,720
Obligations of U.S. states and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	9,273	7,509
Gross Unrealized Gains	20	93
Gross Unrealized Losses	24	7
Fair Value	$ 9,269	$ 7,595

Securities - Sales Transactions

Securities - Sales Transactions of Securities Available-for-Sale (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales	$ 70,652,000
Proceeds from sales		$ 64,106,000	$ 97,296,000
Gross realized gains	327,000
Gross realized gains		19,000	894,000
Gross realized losses	(767,000)
Gross realized losses		(426,000)	0
Net (losses) gains on sales of available-for-sale securities	(440,000)
Net (losses) gains on sales of available-for-sale securities		(407,000)	894,000
Sales of held-to-maturity securities	$ 0	$ 0	$ 0

Securities - Unrealized Losses

Securities - Unrealized Losses on Available-for-Sale and Held-to-Maturity Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value
Less than 12 Months	$ 111,648
12 Months or Longer	1,109,535
Total	1,221,183
Less than 12 Months		$ 600,696
12 Months or Longer		551,925
Total		1,152,621
Unrealized Losses
Less than 12 Months	886
12 Months or Longer	31,256
Total	32,142
Less than 12 Months		4,913
12 Months or Longer		14,571
Total		19,484
Fair Value
Less than 12 Months	13,107	25,599
12 Months or Longer	125,128	0
Total	138,235	25,599
Unrealized Losses
Less than 12 Months	33	97
12 Months or Longer	1,189	0
Total	1,222	97
Obligations of U.S. Government sponsored entities
Fair Value
Less than 12 Months	21,660
12 Months or Longer	449,141
Total	470,801
Less than 12 Months		319,545
12 Months or Longer		39,791
Total		359,336
Unrealized Losses
Less than 12 Months	183
12 Months or Longer	7,370
Total	7,553
Less than 12 Months		2,301
12 Months or Longer		1,032
Total		3,333
Fair Value
Less than 12 Months	4,980	20,505
12 Months or Longer	125,128	0
Total	130,108	20,505
Unrealized Losses
Less than 12 Months	9	90
12 Months or Longer	1,189	0
Total	1,198	90
Obligations of U.S. states and political subdivisions
Fair Value
Less than 12 Months	11,971
12 Months or Longer	49,756
Total	61,727
Less than 12 Months		39,571
12 Months or Longer		11,729
Total		51,300
Unrealized Losses
Less than 12 Months	19
12 Months or Longer	914
Total	933
Less than 12 Months		219
12 Months or Longer		202
Total		421
U.S. Government agencies
Fair Value
Less than 12 Months	16,854
12 Months or Longer	96,247
Total	113,101
Less than 12 Months		33,056
12 Months or Longer		86,562
Total		119,618
Unrealized Losses
Less than 12 Months	22
12 Months or Longer	3,710
Total	3,732
Less than 12 Months		452
12 Months or Longer		2,219
Total		2,671
U.S. Government sponsored entities
Fair Value
Less than 12 Months	61,163
12 Months or Longer	512,216
Total	573,379
Less than 12 Months		208,524
12 Months or Longer		410,767
Total		619,291
Unrealized Losses
Less than 12 Months	662
12 Months or Longer	18,937
Total	19,599
Less than 12 Months		1,941
12 Months or Longer		10,693
Total		12,634
U.S. corporate debt securities
Fair Value
Less than 12 Months	0
12 Months or Longer	2,175
Total	2,175
Less than 12 Months		0
12 Months or Longer		2,163
Total		2,163
Unrealized Losses
Less than 12 Months	0
12 Months or Longer	325
Total	325
Less than 12 Months		0
12 Months or Longer		338
Total		338
Equity securities
Fair Value
Less than 12 Months		0
12 Months or Longer		913
Total		913
Unrealized Losses
Less than 12 Months		0
12 Months or Longer		87
Total		87
Obligations of U.S. sponsored entities
Fair Value
Less than 12 Months	8,127	5,094
12 Months or Longer	0	0
Total	8,127	5,094
Unrealized Losses
Less than 12 Months	24	7
12 Months or Longer	0	0
Total	$ 24	$ 7

Securities - Narrative (Details

Securities - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Recognized losses on equity securities	$ 26,000
Securities pledged or sold under agreements to repurchase	1,200,000,000	$ 1,300,000,000
Equity method investments	1,400,000	$ 1,700,000
Equity method investment, other than temporary Impairment	0
Federal Home Loan Bank New York (FHLBNY)
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal home loan bank, advances, branch of FHLB bank, amount of advances	37,400,000
Federal Home Loan Bank Pittsburgh (FHLBPITT)
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal home loan bank, advances, branch of FHLB bank, amount of advances	14,800,000
Atlantic Central Bankers Bank (ACBB)
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal home loan bank, advances, branch of FHLB bank, amount of advances	$ 95,000

Securities - Amortized Cost and

Securities - Amortized Cost and Estimated Fair Value of Available-for-Sale Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Amortized Cost
Amortized Cost	$ 1,363,902	$ 1,408,996
Fair Value
Total available-for-sale debt securities	1,332,658	1,391,862
Debt securities
Amortized Cost
Due in one year or less	78,160	51,909
Due after one year through five years	355,499	368,846
Due after five years through ten years	139,560	162,061
Due after ten years	9,201	18,591
Amortized Cost	582,420	601,407
Fair Value
Due in one year or less	77,930	51,932
Due after one year through five years	350,470	367,377
Due after five years through ten years	136,734	160,374
Due after ten years	8,668	18,191
Total available-for-sale debt securities	573,802	597,874
Mortgage-backed securities
Amortized Cost
Amortized Cost	781,482	807,589
Fair Value
Total available-for-sale debt securities	$ 758,856	$ 793,988

Securities - Amortized Cost a_2

Securities - Amortized Cost and Estimated Fair Value of Held-to-Maturity Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Amortized Cost
Due in one year or less	$ 8,850	$ 5,980
Due after one year through five years	86,520	51,936
Due after five years through ten years	45,209	81,300
Due after ten years	0	0
Total held-to-maturity debt securities	140,579	139,216
Fair Value
Due in one year or less	8,832	5,979
Due after one year through five years	85,645	52,227
Due after five years through ten years	44,900	82,109
Due after ten years	0	0
Total held-to-maturity debt securities	$ 139,377	$ 140,315

Allowance for Loan and Lease _3

Allowance for Loan and Lease Losses - Changes in Allowance for Loan and Lease Losses (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Movement in allowance for Loan and Lease Losses:
Total allowance at beginning of year				$ 39,771				$ 35,755	$ 39,771	$ 35,755	$ 32,004
Provisions charged to operations	$ 2,058	$ 272	$ 1,045	$ 567	$ 2,014	$ 402	$ 976	$ 769	3,942	4,161	4,321
Recoveries on loans and leases									2,137	2,429	2,139
Charge-offs on loans and leases									(2,440)	(2,574)	(2,709)
Total allowance at end of year	$ 43,410				$ 39,771				$ 43,410	$ 39,771	$ 35,755

Loans and Leases - Schedule of

Loans and Leases - Schedule of Loans and Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 4,837,735	$ 4,672,909
Less: unearned income and deferred costs and fees	(3,796)	(3,789)
Total originated loans and leases, net of unearned income and deferred costs and fees	4,833,939	4,669,120
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,077,635	1,091,651
Commercial and industrial | Agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	107,494	108,608
Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	970,141	983,043
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	2,340,661	2,200,727
Commercial real estate | Agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	170,229	129,959
Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	2,004,763	1,866,802
Commercial real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	165,669	203,966
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,333,894	1,302,941
Residential real estate | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	229,608	241,256
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	70,989	63,123
Consumer and other | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	58,326	50,979
Consumer and other | Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	12,663	12,144
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	14,556	14,467
Originated Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	4,572,537	4,362,332
Less: unearned income and deferred costs and fees	(3,796)	(3,789)
Total originated loans and leases, net of unearned income and deferred costs and fees	4,568,741	4,358,543
Originated Loans and Leases | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,033,923	1,040,675
Originated Loans and Leases | Commercial and industrial | Agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	107,494	108,608
Originated Loans and Leases | Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	926,429	932,067
Originated Loans and Leases | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	2,161,569	1,992,980
Originated Loans and Leases | Commercial real estate | Agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	170,005	129,712
Originated Loans and Leases | Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,827,279	1,660,782
Originated Loans and Leases | Commercial real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	164,285	202,486
Originated Loans and Leases | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,292,261	1,251,852
Originated Loans and Leases | Residential real estate | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	208,459	212,812
Originated Loans and Leases | Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	70,228	62,358
Originated Loans and Leases | Consumer and other | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	57,565	50,214
Originated Loans and Leases | Consumer and other | Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	12,663	12,144
Originated Loans and Leases | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	14,556	14,467
Acquired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	265,198	310,577
Less: unearned income and deferred costs and fees	0	0
Total originated loans and leases, net of unearned income and deferred costs and fees	265,198	310,577
Acquired Loans and Leases | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	43,712	50,976
Acquired Loans and Leases | Commercial and industrial | Agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	0	0
Acquired Loans and Leases | Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	43,712	50,976
Acquired Loans and Leases | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	179,092	207,747
Acquired Loans and Leases | Commercial real estate | Agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	224	247
Acquired Loans and Leases | Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	177,484	206,020
Acquired Loans and Leases | Commercial real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	1,384	1,480
Acquired Loans and Leases | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	41,633	51,089
Acquired Loans and Leases | Residential real estate | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	21,149	28,444
Acquired Loans and Leases | Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	761	765
Acquired Loans and Leases | Consumer and other | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	761	765
Acquired Loans and Leases | Consumer and other | Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	0	0
Acquired Loans and Leases | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans and leases	$ 0	$ 0

Allowance for Loan and Lease _4

Allowance for Loan and Lease Losses - Allowance for Originated and Acquired Loan and Lease Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				$ 39,771					$ 39,771
Provision for loan and lease losses	$ 2,058	$ 272	$ 1,045	567	$ 2,014	$ 402	$ 976	$ 769	3,942	$ 4,161	$ 4,321
Ending Balance	43,410				39,771				43,410	39,771
Originated Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				39,686				35,598	39,686	35,598
Charge-offs									(2,127)	(1,856)
Recoveries									1,865	1,716
Provision for loan and lease losses									3,897	4,228
Ending Balance	43,321				39,686				43,321	39,686	35,598
Acquired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				85				157	85	157
Charge-offs									(313)	(718)
Recoveries									272	713
Provision for loan and lease losses									45	(67)
Ending Balance	89				85				89	85	157
Commercial and industrial | Originated Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				11,812				9,389	11,812	9,389
Charge-offs									(293)	(291)
Recoveries									50	119
Provision for loan and lease losses									(352)	2,595
Ending Balance	11,217				11,812				11,217	11,812	9,389
Commercial and industrial | Acquired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				25				0	25	0
Charge-offs									(41)	(74)
Recoveries									106	24
Provision for loan and lease losses									(35)	75
Ending Balance	55				25				55	25	0
Commercial real estate | Originated Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				20,412				19,836	20,412	19,836
Charge-offs									(60)	(21)
Recoveries									812	980
Provision for loan and lease losses									2,319	(383)
Ending Balance	23,483				20,412				23,483	20,412	19,836
Commercial real estate | Acquired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				0				97	0	97
Charge-offs									(82)	(159)
Recoveries									31	637
Provision for loan and lease losses									51	(575)
Ending Balance	0				0				0	0	97
Residential real estate | Originated Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				6,161				5,149	6,161	5,149
Charge-offs									(424)	(584)
Recoveries									324	212
Provision for loan and lease losses									1,256	1,384
Ending Balance	7,317				6,161				7,317	6,161	5,149
Residential real estate | Acquired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				54				54	54	54
Charge-offs									(190)	(483)
Recoveries									135	44
Provision for loan and lease losses									29	439
Ending Balance	28				54				28	54	54
Consumer and other | Originated Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				1,301				1,224	1,301	1,224
Charge-offs									(1,350)	(960)
Recoveries									679	405
Provision for loan and lease losses									674	632
Ending Balance	1,304				1,301				1,304	1,301	1,224
Consumer and other | Acquired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				6				6	6	6
Charge-offs									0	(2)
Recoveries									0	8
Provision for loan and lease losses									0	(6)
Ending Balance	6				6				6	6	6
Finance Leases | Originated Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				0				0	0	0
Charge-offs									0	0
Recoveries									0	0
Provision for loan and lease losses									0	0
Ending Balance	0				0				0	0	0
Finance Leases | Acquired Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				$ 0				$ 0	0	0
Charge-offs									0	0
Recoveries									0	0
Provision for loan and lease losses									0	0
Ending Balance	$ 0				$ 0				$ 0	$ 0	$ 0

Loans and Leases - Outstanding

Loans and Leases - Outstanding Principal Balance and Related Carrying Amount of Loans Acquired in VIST Acquisition (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Total Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding principal balance	$ 3,652	$ 3,604
Carrying amount	3,438	3,471
VIST | Acquired Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding principal balance	12,822	14,337
Carrying amount	11,036	11,962
VIST | Acquired Non-Credit Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding principal balance	256,265	301,128
Carrying amount	254,162	298,615
VIST | Total Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding principal balance	269,087	315,465
Carrying amount	$ 265,198	$ 310,577

Allowance for Loan and Lease _5

Allowance for Loan and Lease Losses - Allocation of Allowance For Loan and Lease Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ending balance	$ 43,410	$ 39,771
Originated Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	3,762	441
Collectively evaluated for impairment	39,559	39,245
Ending balance	43,321	39,686	$ 35,598
Acquired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	25
Collectively evaluated for impairment	89	60
Ending balance	89	85	157
Commercial and industrial | Originated Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	397	441
Collectively evaluated for impairment	10,820	11,371
Ending balance	11,217	11,812	9,389
Commercial and industrial | Acquired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	25
Collectively evaluated for impairment	55	0
Ending balance	55	25	0
Commercial real estate | Originated Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	3,365	0
Collectively evaluated for impairment	20,118	20,412
Ending balance	23,483	20,412	19,836
Commercial real estate | Acquired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	0	0
Ending balance	0	0	97
Residential real estate | Originated Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	7,317	6,161
Ending balance	7,317	6,161	5,149
Residential real estate | Acquired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	28	54
Ending balance	28	54	54
Consumer and other | Originated Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	1,304	1,301
Ending balance	1,304	1,301	1,224
Consumer and other | Acquired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	6	6
Ending balance	6	6	6
Finance Leases | Originated Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	0	0
Ending balance	0	0	0
Finance Leases | Acquired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	0	0
Ending balance	$ 0	$ 0	$ 0

Loans and Leases - Narrative (D

Loans and Leases - Narrative (Details)	12 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2018USD ($)banking_office	Dec. 31, 2018USD ($)subsidiary_bank	Dec. 31, 2018USD ($)subsidiary_trust	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Business Acquisition [Line Items]
Initial rate below the fully indexed rate, percent (less than)		0.01%
Sale of residential mortgage loans	$ 27,700,000					$ 4,600,000	$ 3,900,000
Net gains on sale of residential mortgage loans	458,000					50,000	95,000
Mortgage servicing assets added during the period	207,000					38,000	21,000
Amortization of mortgage servicing assets	69,000					122,000	157,000
Residential mortgage loans serviced	120,900,000					104,100,000
Mortgage servicing rights, amortized cost	805,000	$ 805,000	$ 805,000	$ 805,000	$ 805,000	667,000
Mortgage servicing rights (MSR) impairment	0					0
Loans held for sale	2,700,000	2,700,000	2,700,000	2,700,000	2,700,000	280,000
Residential mortgage loans used to secure advances from FHLB	425,000,000	425,000,000	$ 425,000,000	$ 425,000,000	$ 425,000,000	475,000,000
Number of subsidiary banks			4	3	4
Interest income on nonaccrual loans	1,000,000					$ 1,000,000	$ 1,000,000
Loans and leases receivable, impaired, commitments to lend to nonperforming loans	$ 0	$ 0	$ 0	$ 0	$ 0
Tompkins, Cayuga, Cortland and Schuyler Counties, New York
Business Acquisition [Line Items]
Number of banking offices | banking_office			14
Wyoming, Livingston, Genessee, Orleans and Monroe, New York
Business Acquisition [Line Items]
Number of banking offices | banking_office			18
Putnam Country, Dutchess Country and Westchester, New York
Business Acquisition [Line Items]
Number of banking offices | banking_office			14
Berks, Montgomery, Philadelphia, Deleware and Schuylkill, Pennsylvania
Business Acquisition [Line Items]
Number of banking offices | banking_office			20
LTV 80 to 100 Percent
Business Acquisition [Line Items]
Loan to value - fixed rate loans (percent)	80.00%	80.00%	80.00%	80.00%	80.00%
Loan to value - adjusted rate loans (percent)	85.00%	85.00%	85.00%	85.00%	85.00%
Loan to value - private mortgage insurance (percent)	78.00%	78.00%	78.00%	78.00%	78.00%
Commercial real estate
Business Acquisition [Line Items]
Loan to value - debt service coverage ratio	75.00%	75.00%	75.00%	75.00%	75.00%
Agriculture | Commercial real estate
Business Acquisition [Line Items]
Loan to value - debt service coverage ratio	75.00%	75.00%	75.00%	75.00%	75.00%

Allowance for Loan and Lease _6

Allowance for Loan and Lease Losses - Investment in Loans and Leases (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 4,837,735,000	$ 4,672,909,000
Interest income on impaired loans and leases	0	0	$ 0
Originated Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	14,167,000	12,350,000
Collectively evaluated for impairment	4,558,370,000	4,349,982,000
Total Loans	4,572,537,000	4,362,332,000
Acquired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	3,438,000	3,471,000
Loans acquired with deteriorated credit quality	11,036,000	11,962,000
Collectively evaluated for impairment	250,724,000	295,144,000
Total Loans	265,198,000	310,577,000
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,077,635,000	1,091,651,000
Commercial and industrial | Originated Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	1,864,000	1,759,000
Collectively evaluated for impairment	1,032,059,000	1,038,916,000
Total Loans	1,033,923,000	1,040,675,000
Commercial and industrial | Acquired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	32,000	276,000
Loans acquired with deteriorated credit quality	153,000	506,000
Collectively evaluated for impairment	43,527,000	50,194,000
Total Loans	43,712,000	50,976,000
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	2,340,661,000	2,200,727,000
Commercial real estate | Originated Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	8,388,000	6,626,000
Collectively evaluated for impairment	2,153,181,000	1,986,354,000
Total Loans	2,161,569,000	1,992,980,000
Commercial real estate | Acquired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	842,000	1,372,000
Loans acquired with deteriorated credit quality	5,852,000	7,481,000
Collectively evaluated for impairment	172,398,000	198,894,000
Total Loans	179,092,000	207,747,000
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,333,894,000	1,302,941,000
Residential real estate | Originated Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	3,915,000	3,965,000
Collectively evaluated for impairment	1,288,346,000	1,247,887,000
Total Loans	1,292,261,000	1,251,852,000
Residential real estate | Acquired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	2,564,000	1,823,000
Loans acquired with deteriorated credit quality	5,031,000	3,975,000
Collectively evaluated for impairment	34,038,000	45,291,000
Total Loans	41,633,000	51,089,000
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	70,989,000	63,123,000
Consumer and other | Originated Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	70,228,000	62,358,000
Total Loans	70,228,000	62,358,000
Consumer and other | Acquired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Loans acquired with deteriorated credit quality	0	0
Collectively evaluated for impairment	761,000	765,000
Total Loans	761,000	765,000
Finance Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	14,556,000	14,467,000
Finance Leases | Originated Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	14,556,000	14,467,000
Total Loans	14,556,000	14,467,000
Finance Leases | Acquired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Loans acquired with deteriorated credit quality	0	0
Collectively evaluated for impairment	0	0
Total Loans	$ 0	$ 0

Loans and Leases - Loans to Rel

Loans and Leases - Loans to Related Parties (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Loans and Leases Receivable, Related Parties [Roll Forward]
Balance at beginning of year	$ 14,503	$ 11,662
New Directors/Executive Officers	467	0
New loans and advancements	30,570	3,972
Loan payments	(5,945)	(1,131)
Balance at end of year	$ 39,595	$ 14,503

Allowance for Loan and Lease _7

Allowance for Loan and Lease Losses - Recorded Investment on Impaired Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Originated Loans and Leases
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	$ 7,303	$ 11,837
Unpaid principal balance with no related allowance	7,844	11,932
Recorded investment with related allowance	6,864	513
Unpaid principal balance with related allowance	6,864	532
Related Allowance	3,762	441
Recorded investment	14,167	12,350
Unpaid principal balance	14,708	12,464
Originated Loans and Leases | Commercial and industrial | Other
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	183	1,246
Unpaid principal balance with no related allowance	271	1,250
Recorded investment with related allowance	5,183	513
Unpaid principal balance with related allowance	5,183	532
Related Allowance	3,365	441
Originated Loans and Leases | Commercial real estate | Other
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	3,205	6,626
Unpaid principal balance with no related allowance	3,405	6,633
Recorded investment with related allowance	1,681	0
Unpaid principal balance with related allowance	1,681	0
Related Allowance	397	0
Originated Loans and Leases | Residential real estate | Home equity
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	3,915	3,965
Unpaid principal balance with no related allowance	4,168	4,049
Acquired Loans and Leases
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	3,438	3,421
Unpaid principal balance with no related allowance	3,652	3,554
Recorded investment with related allowance	0	50
Unpaid principal balance with related allowance	0	50
Related Allowance	0	25
Recorded investment	3,438	3,471
Unpaid principal balance	3,652	3,604
Acquired Loans and Leases | Commercial and industrial | Other
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	32	226
Unpaid principal balance with no related allowance	32	226
Recorded investment with related allowance	0	50
Unpaid principal balance with related allowance	0	50
Related Allowance	0	25
Acquired Loans and Leases | Commercial real estate | Other
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	842	1,372
Unpaid principal balance with no related allowance	924	1,474
Acquired Loans and Leases | Residential real estate | Home equity
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	2,564	1,823
Unpaid principal balance with no related allowance	$ 2,696	$ 1,854

Loans and Leases - Aging Analys

Loans and Leases - Aging Analysis of Past Due Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	$ 4,837,735	$ 4,672,909
Less: unearned income and deferred costs and fees	(3,796)	(3,789)
Total originated loans and leases, net of unearned income and deferred costs and fees	4,833,939	4,669,120
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	1,077,635	1,091,651
Commercial and industrial | Agriculture
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	107,494	108,608
Commercial and industrial | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	970,141	983,043
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	2,340,661	2,200,727
Commercial real estate | Agriculture
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	170,229	129,959
Commercial real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	2,004,763	1,866,802
Commercial real estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	165,669	203,966
Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	1,333,894	1,302,941
Residential real estate | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	229,608	241,256
Residential real estate | Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	1,104,286	1,061,685
Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	70,989	63,123
Consumer and other | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	58,326	50,979
Consumer and other | Indirect
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	12,663	12,144
Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	14,556	14,467
Originated Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	4,556,048	4,349,180
Total Loans	4,572,537	4,362,332
90 days and accruing	0	44
Nonaccrual	19,340	16,253
Less: unearned income and deferred costs and fees	(3,796)	(3,789)
Less: unearned income and deferred costs and fees, current	(3,796)	(3,789)
Less: unearned income and deferred costs and fees, 90 days and accruing	0	0
Less: unearned income and deferred costs and fees, nonaccrual	0	0
Total originated loans and leases, net of unearned income and deferred costs and fees	4,568,741	4,358,543
Total originated loans and leases, net of unearned income and deferred costs and fees, current	4,552,252	4,345,391
Originated Loans and Leases | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	7,838	6,791
Less: unearned income and deferred costs and fees	0	0
Total originated loans and leases, net of unearned income and deferred costs and fees	7,838	6,791
Originated Loans and Leases | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	8,651	6,361
Less: unearned income and deferred costs and fees	0	0
Total originated loans and leases, net of unearned income and deferred costs and fees	8,651	6,361
Originated Loans and Leases | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,029,897	1,039,395
Total Loans	1,033,923	1,040,675
90 days and accruing	0	0
Nonaccrual	1,861	2,852
Originated Loans and Leases | Commercial and industrial | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	2,367	431
Originated Loans and Leases | Commercial and industrial | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	1,659	849
Originated Loans and Leases | Commercial and industrial | Agriculture
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	107,494	108,608
Total Loans	107,494	108,608
90 days and accruing	0	0
Nonaccrual	0	0
Originated Loans and Leases | Commercial and industrial | Agriculture | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	0
Originated Loans and Leases | Commercial and industrial | Agriculture | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	0
Originated Loans and Leases | Commercial and industrial | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	922,403	930,787
Total Loans	926,429	932,067
90 days and accruing	0	0
Nonaccrual	1,861	2,852
Originated Loans and Leases | Commercial and industrial | Other | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	2,367	431
Originated Loans and Leases | Commercial and industrial | Other | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	1,659	849
Originated Loans and Leases | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	2,158,441	1,989,272
Total Loans	2,161,569	1,992,980
90 days and accruing	0	0
Nonaccrual	7,691	5,402
Originated Loans and Leases | Commercial real estate | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	1,272	1,583
Originated Loans and Leases | Commercial real estate | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	1,856	2,125
Originated Loans and Leases | Commercial real estate | Agriculture
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	169,934	129,712
Total Loans	170,005	129,712
90 days and accruing	0	0
Nonaccrual	0	0
Originated Loans and Leases | Commercial real estate | Agriculture | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	71	0
Originated Loans and Leases | Commercial real estate | Agriculture | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	0
Originated Loans and Leases | Commercial real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,824,222	1,657,074
Total Loans	1,827,279	1,660,782
90 days and accruing	0	0
Nonaccrual	7,691	5,402
Originated Loans and Leases | Commercial real estate | Other | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	1,201	1,583
Originated Loans and Leases | Commercial real estate | Other | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	1,856	2,125
Originated Loans and Leases | Commercial real estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	164,285	202,486
Total Loans	164,285	202,486
90 days and accruing	0	0
Nonaccrual	0	0
Originated Loans and Leases | Commercial real estate | Construction | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	0
Originated Loans and Leases | Commercial real estate | Construction | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	0
Originated Loans and Leases | Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,283,529	1,244,514
Total Loans	1,292,261	1,251,852
90 days and accruing	0	0
Nonaccrual	9,554	7,645
Originated Loans and Leases | Residential real estate | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	3,679	4,198
Originated Loans and Leases | Residential real estate | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	5,053	3,140
Originated Loans and Leases | Residential real estate | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	206,447	211,319
Total Loans	208,459	212,812
90 days and accruing	0	0
Nonaccrual	1,784	1,537
Originated Loans and Leases | Residential real estate | Home equity | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	986	1,045
Originated Loans and Leases | Residential real estate | Home equity | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	1,026	448
Originated Loans and Leases | Residential real estate | Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,077,082	1,033,195
Total Loans	1,083,802	1,039,040
90 days and accruing	0	0
Nonaccrual	7,770	6,108
Originated Loans and Leases | Residential real estate | Mortgages | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	2,693	3,153
Originated Loans and Leases | Residential real estate | Mortgages | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	4,027	2,692
Originated Loans and Leases | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	69,625	61,532
Total Loans	70,228	62,358
90 days and accruing	0	44
Nonaccrual	234	354
Originated Loans and Leases | Consumer and other | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	520	579
Originated Loans and Leases | Consumer and other | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	83	247
Originated Loans and Leases | Consumer and other | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	57,354	50,042
Total Loans	57,565	50,214
90 days and accruing	0	38
Nonaccrual	79	76
Originated Loans and Leases | Consumer and other | Other | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	187	130
Originated Loans and Leases | Consumer and other | Other | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	24	42
Originated Loans and Leases | Consumer and other | Indirect
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	12,271	11,490
Total Loans	12,663	12,144
90 days and accruing	0	6
Nonaccrual	155	278
Originated Loans and Leases | Consumer and other | Indirect | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	333	449
Originated Loans and Leases | Consumer and other | Indirect | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	59	205
Originated Loans and Leases | Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	14,556	14,467
Total Loans	14,556	14,467
90 days and accruing	0	0
Nonaccrual	0	0
Originated Loans and Leases | Leases | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	0
Originated Loans and Leases | Leases | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	0
Acquired Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	262,510	307,027
Total Loans	265,198	310,577
90 days and accruing	1,316	1,146
Nonaccrual	2,856	3,264
Less: unearned income and deferred costs and fees	0	0
Total originated loans and leases, net of unearned income and deferred costs and fees	265,198	310,577
Acquired Loans and Leases | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	67	1,256
Acquired Loans and Leases | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	2,621	2,294
Acquired Loans and Leases | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	43,702	50,903
Total Loans	43,712	50,976
90 days and accruing	10	61
Nonaccrual	22	0
Acquired Loans and Leases | Commercial and industrial | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	12
Acquired Loans and Leases | Commercial and industrial | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	10	61
Acquired Loans and Leases | Commercial and industrial | Agriculture
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	0	0
Acquired Loans and Leases | Commercial and industrial | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	43,702	50,903
Total Loans	43,712	50,976
90 days and accruing	10	61
Nonaccrual	22	0
Acquired Loans and Leases | Commercial and industrial | Other | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	12
Acquired Loans and Leases | Commercial and industrial | Other | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	10	61
Acquired Loans and Leases | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	178,253	206,853
Total Loans	179,092	207,747
90 days and accruing	525	515
Nonaccrual	316	546
Acquired Loans and Leases | Commercial real estate | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	167
Acquired Loans and Leases | Commercial real estate | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	839	727
Acquired Loans and Leases | Commercial real estate | Agriculture
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	224	247
Total Loans	224	247
90 days and accruing	0	0
Nonaccrual	0	0
Acquired Loans and Leases | Commercial real estate | Agriculture | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	0
Acquired Loans and Leases | Commercial real estate | Agriculture | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	0
Acquired Loans and Leases | Commercial real estate | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	176,645	205,126
Total Loans	177,484	206,020
90 days and accruing	525	515
Nonaccrual	316	546
Acquired Loans and Leases | Commercial real estate | Other | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	167
Acquired Loans and Leases | Commercial real estate | Other | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	839	727
Acquired Loans and Leases | Commercial real estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,384	1,480
Total Loans	1,384	1,480
90 days and accruing	0	0
Nonaccrual	0	0
Acquired Loans and Leases | Commercial real estate | Construction | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	0
Acquired Loans and Leases | Commercial real estate | Construction | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	0
Acquired Loans and Leases | Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	39,797	48,510
Total Loans	41,633	51,089
90 days and accruing	781	570
Nonaccrual	2,518	2,718
Acquired Loans and Leases | Residential real estate | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	64	1,073
Acquired Loans and Leases | Residential real estate | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	1,772	1,506
Acquired Loans and Leases | Residential real estate | Home equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	20,300	27,279
Total Loans	21,149	28,444
90 days and accruing	59	130
Nonaccrual	1,414	1,604
Acquired Loans and Leases | Residential real estate | Home equity | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	46	601
Acquired Loans and Leases | Residential real estate | Home equity | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	803	564
Acquired Loans and Leases | Residential real estate | Mortgages
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	19,497	21,231
Total Loans	20,484	22,645
90 days and accruing	722	440
Nonaccrual	1,104	1,114
Acquired Loans and Leases | Residential real estate | Mortgages | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	18	472
Acquired Loans and Leases | Residential real estate | Mortgages | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	969	942
Acquired Loans and Leases | Consumer and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	758	761
Total Loans	761	765
90 days and accruing	0	0
Nonaccrual	0	0
Acquired Loans and Leases | Consumer and other | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	3	4
Acquired Loans and Leases | Consumer and other | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	0
Acquired Loans and Leases | Consumer and other | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	758	761
Total Loans	761	765
90 days and accruing	0	0
Nonaccrual	0	0
Acquired Loans and Leases | Consumer and other | Other | 30-89 days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	3	4
Acquired Loans and Leases | Consumer and other | Other | 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due	0	0
Acquired Loans and Leases | Consumer and other | Indirect
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	0	0
Acquired Loans and Leases | Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	$ 0	$ 0

Allowance for Loan and Lease _8

Allowance for Loan and Lease Losses - Average Recorded Investment and Interest Income Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 17,900	$ 15,800	$ 17,000
Originated Loans and Leases
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	11,127	11,556	9,341
Interest Income Recognized With No Related Allowance	0	0	0
Average Recorded Investment With Related Allowance	2,731	276	1,829
Interest Income Recognized With Related Allowance	0	0	0
Average Recorded Investment	13,858	11,832	11,170
Interest Income Recognized	0	0	0
Originated Loans and Leases | Commercial and industrial | Other
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	1,979	718	249
Interest Income Recognized With No Related Allowance	0	0	0
Average Recorded Investment With Related Allowance	1,374	276	114
Interest Income Recognized With Related Allowance	0	0	0
Originated Loans and Leases | Commercial real estate | Other
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	5,165	7,287	6,089
Interest Income Recognized With No Related Allowance	0	0	0
Average Recorded Investment With Related Allowance	1,357	0	1,715
Interest Income Recognized With Related Allowance	0	0	0
Originated Loans and Leases | Residential real estate | Home equity
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	3,983	3,551	3,003
Interest Income Recognized With No Related Allowance	0	0	0
Acquired Loans and Leases
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	3,994	4,113	5,792
Interest Income Recognized With No Related Allowance	0	0	0
Average Recorded Investment With Related Allowance	0	10	58
Interest Income Recognized With Related Allowance	0	0	0
Average Recorded Investment	3,994	4,123	5,850
Interest Income Recognized	0	0	0
Acquired Loans and Leases | Commercial and industrial | Other
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	50	111	183
Interest Income Recognized With No Related Allowance	0	0	0
Average Recorded Investment With Related Allowance	0	10	0
Interest Income Recognized With Related Allowance	0	0	0
Acquired Loans and Leases | Commercial real estate | Other
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	999	2,141	4,141
Interest Income Recognized With No Related Allowance	0	0	0
Average Recorded Investment With Related Allowance	0	0	58
Interest Income Recognized With Related Allowance	0	0	0
Acquired Loans and Leases | Commercial real estate | Construction
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	0	0	152
Interest Income Recognized With No Related Allowance	0	0	0
Acquired Loans and Leases | Residential real estate | Home equity
Financing Receivable, Impaired [Line Items]
Average Recorded Investment With No Related Allowance	2,945	1,861	1,316
Interest Income Recognized With No Related Allowance	$ 0	$ 0	$ 0

Allowance for Loan and Lease _9

Allowance for Loan and Lease Losses - Loans by Class Modified as Troubled Debt Restructurings (Details) - Originated Loans and Leases $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)loan	Dec. 31, 2017USD ($)loan
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	7	6
Pre-Modification Outstanding Recorded Investment	$ 533	$ 716
Post- Modification Outstanding Recorded Investment	$ 533	$ 716
Number of Loans TDRs | loan	0	1
Post- Modification Outstanding Recorded Investment TDRs	$ 0	$ 55
Commercial real estate | Other
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	1
Pre-Modification Outstanding Recorded Investment	$ 26
Post- Modification Outstanding Recorded Investment	$ 26
Number of Loans TDRs | loan	0
Post- Modification Outstanding Recorded Investment TDRs	$ 0
Residential real estate | Home equity
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	6	6
Pre-Modification Outstanding Recorded Investment	$ 507	$ 716
Post- Modification Outstanding Recorded Investment	$ 507	$ 716
Number of Loans TDRs | loan	0	1
Post- Modification Outstanding Recorded Investment TDRs	$ 0	$ 55

Allowance for Loan and Lease_10

Allowance for Loan and Lease Losses - Credit Quality Indicators by Class of Commercial Real Estate (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Originated Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 3,195,492	$ 3,033,655
Originated Loans and Leases | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	3,123,455	2,968,737
Originated Loans and Leases | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	28,074	44,334
Originated Loans and Leases | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	43,963	20,584
Originated Loans and Leases | Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	926,429	932,067
Originated Loans and Leases | Commercial and industrial | Other | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	910,476	919,214
Originated Loans and Leases | Commercial and industrial | Other | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	8,675	6,680
Originated Loans and Leases | Commercial and industrial | Other | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	7,278	6,173
Originated Loans and Leases | Commercial and industrial | Agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	107,494	108,608
Originated Loans and Leases | Commercial and industrial | Agriculture | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	93,939	100,470
Originated Loans and Leases | Commercial and industrial | Agriculture | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	4,951	8,068
Originated Loans and Leases | Commercial and industrial | Agriculture | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	8,604	70
Originated Loans and Leases | Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	1,827,279	1,660,782
Originated Loans and Leases | Commercial real estate | Other | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	1,797,599	1,627,713
Originated Loans and Leases | Commercial real estate | Other | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	9,484	19,068
Originated Loans and Leases | Commercial real estate | Other | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	20,196	14,001
Originated Loans and Leases | Commercial real estate | Agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	170,005	129,712
Originated Loans and Leases | Commercial real estate | Agriculture | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	157,156	119,392
Originated Loans and Leases | Commercial real estate | Agriculture | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	4,964	9,980
Originated Loans and Leases | Commercial real estate | Agriculture | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	7,885	340
Originated Loans and Leases | Commercial real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	164,285	202,486
Originated Loans and Leases | Commercial real estate | Construction | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	164,285	201,948
Originated Loans and Leases | Commercial real estate | Construction | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0	538
Originated Loans and Leases | Commercial real estate | Construction | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0	0
Acquired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	222,804	258,723
Acquired Loans and Leases | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	219,438	251,103
Acquired Loans and Leases | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	452	2,265
Acquired Loans and Leases | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	2,914	5,355
Acquired Loans and Leases | Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	43,712	50,976
Acquired Loans and Leases | Commercial and industrial | Other | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	43,447	50,554
Acquired Loans and Leases | Commercial and industrial | Other | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0	0
Acquired Loans and Leases | Commercial and industrial | Other | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	265	422
Acquired Loans and Leases | Commercial and industrial | Agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0	0
Acquired Loans and Leases | Commercial and industrial | Agriculture | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0	0
Acquired Loans and Leases | Commercial and industrial | Agriculture | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0	0
Acquired Loans and Leases | Commercial and industrial | Agriculture | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0	0
Acquired Loans and Leases | Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	177,484	206,020
Acquired Loans and Leases | Commercial real estate | Other | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	174,383	198,822
Acquired Loans and Leases | Commercial real estate | Other | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	452	2,265
Acquired Loans and Leases | Commercial real estate | Other | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	2,649	4,933
Acquired Loans and Leases | Commercial real estate | Agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	224	247
Acquired Loans and Leases | Commercial real estate | Agriculture | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	224	247
Acquired Loans and Leases | Commercial real estate | Agriculture | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0	0
Acquired Loans and Leases | Commercial real estate | Agriculture | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0	0
Acquired Loans and Leases | Commercial real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	1,384	1,480
Acquired Loans and Leases | Commercial real estate | Construction | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	1,384	1,480
Acquired Loans and Leases | Commercial real estate | Construction | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	0	0
Acquired Loans and Leases | Commercial real estate | Construction | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 0	$ 0

Allowance for Loan and Lease_11

Allowance for Loan and Lease Losses - Credit Quality Indicators by Class of Residential Real Estate (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Originated Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	$ 1,362,489	$ 1,314,210
Originated Loans and Leases | Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	1,352,701	1,306,211
Originated Loans and Leases | Nonperforming
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	9,788	7,999
Originated Loans and Leases | Residential real estate | Residential Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	208,459	212,812
Originated Loans and Leases | Residential real estate | Residential Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	1,083,802	1,039,040
Originated Loans and Leases | Residential real estate | Performing | Residential Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	206,675	211,275
Originated Loans and Leases | Residential real estate | Performing | Residential Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	1,076,032	1,032,932
Originated Loans and Leases | Residential real estate | Nonperforming | Residential Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	1,784	1,537
Originated Loans and Leases | Residential real estate | Nonperforming | Residential Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	7,770	6,108
Originated Loans and Leases | Consumer and other | Consumer Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	12,663	12,144
Originated Loans and Leases | Consumer and other | Consumer Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	57,565	50,214
Originated Loans and Leases | Consumer and other | Performing | Consumer Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	12,508	11,866
Originated Loans and Leases | Consumer and other | Performing | Consumer Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	57,486	50,138
Originated Loans and Leases | Consumer and other | Nonperforming | Consumer Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	155	278
Originated Loans and Leases | Consumer and other | Nonperforming | Consumer Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	79	76
Acquired Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	42,394	51,854
Acquired Loans and Leases | Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	39,876	49,136
Acquired Loans and Leases | Nonperforming
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	2,518	2,718
Acquired Loans and Leases | Residential real estate | Residential Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	21,149	28,444
Acquired Loans and Leases | Residential real estate | Residential Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	20,484	22,645
Acquired Loans and Leases | Residential real estate | Performing | Residential Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	19,735	26,840
Acquired Loans and Leases | Residential real estate | Performing | Residential Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	19,380	21,531
Acquired Loans and Leases | Residential real estate | Nonperforming | Residential Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	1,414	1,604
Acquired Loans and Leases | Residential real estate | Nonperforming | Residential Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	1,104	1,114
Acquired Loans and Leases | Consumer and other | Consumer Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	0	0
Acquired Loans and Leases | Consumer and other | Consumer Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	761	765
Acquired Loans and Leases | Consumer and other | Performing | Consumer Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	0	0
Acquired Loans and Leases | Consumer and other | Performing | Consumer Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	761	765
Acquired Loans and Leases | Consumer and other | Nonperforming | Consumer Indirect
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	0	0
Acquired Loans and Leases | Consumer and other | Nonperforming | Consumer Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases, gross	$ 0	$ 0

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Schedule of Goodwill (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Roll Forward]
Balance at the beginning of the period	$ 92,291,000	$ 92,623,000
Goodwill related to sale of portion of business unit	(8,000)	(332,000)
Balance at the end of the period	92,283,000	92,291,000
Reduction of goodwill	8,000	332,000
Impairment of goodwill and intangible assets	0
Banking
Goodwill [Roll Forward]
Balance at the beginning of the period	64,369,000	64,369,000
Goodwill related to sale of portion of business unit	0	0
Balance at the end of the period	64,369,000	64,369,000
Reduction of goodwill	0	0
Insurance
Goodwill [Roll Forward]
Balance at the beginning of the period	19,711,000	20,043,000
Goodwill related to sale of portion of business unit	(8,000)	(332,000)
Balance at the end of the period	19,703,000	19,711,000
Reduction of goodwill	8,000	332,000
Wealth Management
Goodwill [Roll Forward]
Balance at the beginning of the period	8,211,000	8,211,000
Goodwill related to sale of portion of business unit	0	0
Balance at the end of the period	8,211,000	8,211,000
Reduction of goodwill	$ 0	$ 0

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Schedule of Amortizing Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 33,634	$ 33,428
Accumulated Amortization	26,006	24,165
Net Carrying Amount	7,628	9,263
Amortization of intangible assets	1,771	1,932	$ 2,090
Core deposit intangible
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	18,774	18,774
Accumulated Amortization	15,386	14,302
Net Carrying Amount	3,388	4,472
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	8,877	8,878
Accumulated Amortization	5,888	5,339
Net Carrying Amount	2,989	3,539
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,983	5,776
Accumulated Amortization	4,732	4,524
Net Carrying Amount	$ 1,251	$ 1,252

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Estimated Amortization Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Estimated amortization expense:
For the year ended December 31, 2019	$ 1,671
For the year ended December 31, 2020	1,472
For the year ended December 31, 2021	1,307
For the year ended December 31, 2022	864
For the year ended December 31, 2023	302
Amortization of mortgage servicing assets	$ 69	$ 122	$ 157

Premises and Equipment - Schedu

Premises and Equipment - Schedule of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Accumulated depreciation and amortization	$ (89,009)	$ (85,545)
Total	97,202	86,995
Land
Property, Plant and Equipment [Line Items]
Premise and equipment, gross	9,348	9,245
Premises
Property, Plant and Equipment [Line Items]
Premise and equipment, gross	103,850	95,272
Furniture, fixtures, and equipment
Property, Plant and Equipment [Line Items]
Premise and equipment, gross	$ 73,013	$ 68,023

Premises and Equipment - Deprec

Premises and Equipment - Depreciation and Amortization Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 7,604	$ 6,824	$ 6,251
Premises
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	2,989	2,527	2,247
Furniture, fixtures, and equipment
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 4,615	$ 4,297	$ 4,004

Premises and Equipment - Future

Premises and Equipment - Future Minimum Lease Payments (Details) $ in Thousands	Dec. 31, 2018USD ($)
Property, Plant and Equipment [Abstract]
2,019	$ 4,790
2,020	3,995
2,021	3,644
2,022	3,429
2,023	3,386
Thereafter	13,023
Total	$ 32,267

Premises and Equipment - Narrat

Premises and Equipment - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Gross rental expense	$ 4.7	$ 5.1	$ 5.2
Minimum
Property, Plant and Equipment [Line Items]
Renewal option (in years)	5 years
Maximum
Property, Plant and Equipment [Line Items]
Renewal option (in years)	20 years

Deposits - Narrative (Details)

Deposits - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Time deposits, greater than $250,000	$ 156.6	$ 221.7

Deposits - Scheduled Maturities

Deposits - Scheduled Maturities of Time Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Maturity
Three months or less	$ 159,937
Over three through six months	127,582
Over six through twelve months	189,550
Total due in 2019	477,069
2,020	75,747
2,021	57,448
2,022	18,708
2,023	8,249
2,024	74
Total	637,295	$ 748,250
Less than $250,000
Maturity
Three months or less	101,415
Over three through six months	98,889
Over six through twelve months	147,865
Total due in 2019	348,169
2,020	62,821
2,021	45,530
2,022	16,124
2,023	7,991
2,024	74
Total	480,709
$250,000 and over
Maturity
Three months or less	58,522
Over three through six months	28,693
Over six through twelve months	41,685
Total due in 2019	128,900
2,020	12,926
2,021	11,918
2,022	2,584
2,023	258
2,024	0
Total	$ 156,586

Securities Sold Under Agreeme_3

Securities Sold Under Agreements to Repurchase and Federal Funds Purchased (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Retail Repurchase Agreements
Repurchase Agreement Counterparty [Line Items]
Total outstanding at December 31	$ 81,800,000
Wholesale Repurchase Agreements
Repurchase Agreement Counterparty [Line Items]
Total outstanding at December 31	0
Securities Sold Under Agreements to Repurchase
Repurchase Agreement Counterparty [Line Items]
Total outstanding at December 31	81,842,000	$ 75,177,000	$ 69,062,000
Maximum month-end balance	81,842,000	80,326,000	125,063,000
Average balance during the year	$ 63,472,000	$ 64,888,000	$ 99,622,000
Weighted average rate at December 31	0.22%	0.23%	0.88%
Average interest rate paid during the year	0.24%	0.36%	2.24%
Federal Funds Purchased
Repurchase Agreement Counterparty [Line Items]
Average balance during the year	$ 0	$ 0	$ 0
Average interest rate paid during the year	0.00%	0.00%	0.00%

Other Borrowings - Schedule of

Other Borrowings - Schedule of Company's Borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Overnight FHLB advances	$ 647,075	$ 587,742
Term FHLB advances	425,000	475,000
Other	4,000	9,000
Total other borrowings	$ 1,076,075	$ 1,071,742

Other Borrowings - Narrative (D

Other Borrowings - Narrative (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Line of Credit Facility [Line Items]
Maximum borrowing capacity, lines of credit	$ 25,000,000
Long-term line of credit	0	$ 0
Unused borrowing capacity on established lines with FHLB	1,000,000,000	1,000,000,000
Unencumbered residential and commercial real estate loan	554,300,000
Overnight FHLB advances	647,075,000	587,742,000
Term advances from FHLB	$ 425,000,000	$ 475,000,000
Weighted average interest rate (percent)	2.07%	1.53%
Term advances mature within one year	$ 275,000,000
Term advances maturing after one year	150,000,000
Term advances mature in 2019	130,000,000
Term advances mature in 2020	20,000,000
Callable FHLB borrowings	0
Term borrowing with a bank	4,000,000	$ 9,000,000
Subsidiaries
Line of Credit Facility [Line Items]
Maximum borrowing capacity, lines of credit	$ 98,000,000	$ 58,000,000

Trust Preferred Debentures (Det

Trust Preferred Debentures (Details)	1 Months Ended	12 Months Ended
	Aug. 31, 2003USD ($)	Dec. 31, 2018USD ($)subsidiary_trust	Jun. 30, 2003USD ($)	Sep. 26, 2002USD ($)
Debt Instrument [Line Items]
Number of unconsolidated subsidiary trusts | subsidiary_trust		3
Sleepy Hollow Capital Trust I
Debt Instrument [Line Items]
Par Amount	$ 4,000,000	$ 4,000,000
Interest rate, basis spread	3.05%
Common equity securities issued to the Company	$ 100,000
Sleepy Hollow Capital Trust I | LIBOR
Debt Instrument [Line Items]
Interest rate, basis spread		3.05%
Leesport Capital Trust II
Debt Instrument [Line Items]
Par Amount		$ 10,000,000		$ 10,000,000
Leesport Capital Trust II | LIBOR
Debt Instrument [Line Items]
Interest rate, basis spread		3.45%
Madison Statutory Trust I
Debt Instrument [Line Items]
Par Amount		$ 5,000,000	$ 5,000,000
Madison Statutory Trust I | LIBOR
Debt Instrument [Line Items]
Interest rate, basis spread		3.10%
Madison Statutory Trust I | Madison Statutory Trust I | Unconsolidated subsidiary
Debt Instrument [Line Items]
Ownership percentage by parent		100.00%
Leesport Capital Trust II | Leesport Capital Trust II | Unconsolidated subsidiary
Debt Instrument [Line Items]
Ownership percentage by parent		100.00%
Sleepy Hollow Capital Trust I | Tompkins Capital Trust I | Unconsolidated subsidiary
Debt Instrument [Line Items]
Ownership percentage by parent		100.00%

Employee Benefit Plans - Narrat

Employee Benefit Plans - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)pension_planshares	Dec. 31, 2017USD ($)shares	Dec. 31, 2016USD ($)
Defined Contribution Plan Disclosure [Line Items]
Number of non-contributory defined-contribution retirement plans | pension_plan	2
Common Stock, issued (in shares) | shares	15,348,287	15,301,524
Common stock, value	$ 1,535	$ 1,530
Expenses related to defined-contribution plans	3,900	4,100	$ 3,800
Employee stock ownership plan - expense recognized	$ 4,900	5,800	4,900
Incentive stock options (ISOPs), maximum contribution, percent	4.00%
Matching contributions to 401(k) plan cost	$ 2,600	2,500	$ 2,400
Corporate owned life insurance	$ 81,928	$ 80,106
DB Pension Plans
Defined Contribution Plan Disclosure [Line Items]
Common Stock, issued (in shares) | shares	42,192	42,192
Common stock, value	$ 3,200	$ 3,400
Accumulated benefit obligation	79,700	82,700
Unfunded status recognized in other liabilities	7,215	$ 2,594
Increase in service and interest costs	1,300
Increase in benefit obligation amount	39
Decrease in service and interest costs	1,100
Decrease in benefit obligation, amount	$ 35
Expected long-term return on plan assets (percent)	7.25%	7.25%	7.25%
DB Pension Plans | Maximum
Defined Contribution Plan Disclosure [Line Items]
Rate of compensation increase (percent)	5.90%
DB Pension Plans | Minimum
Defined Contribution Plan Disclosure [Line Items]
Rate of compensation increase (percent)	4.50%
DC Retirement Plan
Defined Contribution Plan Disclosure [Line Items]
Requisite service period	1 year
Maximum annual contribution, percent of account balances, percent	4.00%
Accumulated benefit obligation	$ 7,900	$ 9,000
Unfunded status recognized in other liabilities	$ 7,857	$ 8,995
Rate of compensation increase (percent)	4.00%	5.00%	5.00%
SERP Plan
Defined Contribution Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 23,500	$ 26,100
Unfunded status recognized in other liabilities	$ 23,539	$ 26,142
Rate of compensation increase (percent)	5.00%	5.00%	5.00%
Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits
Defined Contribution Plan Disclosure [Line Items]
Benefit liability	$ 1,500	$ 1,500
Compensation expense	$ 52	$ 115

Employee Benefit Plans - Change

Employee Benefit Plans - Changes in Projected Benefit Obligation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
DB Pension Plans
Change in benefit obligation:
Benefit obligation at beginning of year	$ 82,748	$ 77,304
Service cost	0	0	$ 0
Interest cost	2,508	2,501	2,473
Plan participants’ contributions	0	0
Amendments	0	0
Curtailments	0	0
Actuarial loss (gain)	(2,324)	5,928
Benefits paid	(3,243)	(2,985)
Benefit obligation at end of year	79,689	82,748	77,304
Change in plan assets:
Fair value of plan assets at beginning of year	80,154	71,807
Actual return on plan assets	(4,437)	9,582
Plan participants’ contributions	0	0
Employer contributions	0	1,750
Benefits paid	(3,243)	(2,985)
Fair value of plan assets at end of year	72,474	80,154	71,807
Unfunded status	(7,215)	(2,594)
Life and Healthcare Plan
Change in benefit obligation:
Benefit obligation at beginning of year	8,995	9,121
Service cost	212	192	258
Interest cost	270	268	283
Plan participants’ contributions	122	98
Amendments	0	(964)
Curtailments	0	0
Actuarial loss (gain)	(1,337)	708
Benefits paid	(405)	(428)
Benefit obligation at end of year	7,857	8,995	9,121
Change in plan assets:
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Plan participants’ contributions	122	98
Employer contributions	283	330
Benefits paid	(405)	(428)
Fair value of plan assets at end of year	0	0	0
Unfunded status	(7,857)	(8,995)
SERP Plan
Change in benefit obligation:
Benefit obligation at beginning of year	26,142	23,399
Service cost	160	166	171
Interest cost	833	852	832
Plan participants’ contributions	0	0
Amendments	0	0
Curtailments	0	0
Actuarial loss (gain)	(2,987)	2,407
Benefits paid	(609)	(682)
Benefit obligation at end of year	23,539	26,142	23,399
Change in plan assets:
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Plan participants’ contributions	0	0
Employer contributions	609	682
Benefits paid	(609)	(682)
Fair value of plan assets at end of year	0	0	$ 0
Unfunded status	$ (23,539)	$ (26,142)

Employee Benefit Plans - Net Pe

Employee Benefit Plans - Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
DB Pension Plans
Components of net periodic benefit cost
Service cost	$ 0	$ 0	$ 0
Interest cost	2,508	2,501	2,473
Expected return on plan assets	(5,648)	(5,088)	(4,844)
Amortization of prior service (credit) cost	(10)	(10)	(15)
Recognized net actuarial loss	1,118	1,075	975
Net periodic benefit (credit) cost	(2,032)	(1,522)	(1,411)
Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)
Net actuarial loss (gain)	7,761	1,434	1,880
Recognized actuarial loss	(1,118)	(1,075)	(975)
Prior service credit	0	0	0
Recognized prior service cost (credit)	10	10	15
Recognized in other comprehensive income (loss)	6,653	369	920
Total recognized in net periodic benefit cost and other comprehensive income	4,621	(1,153)	(491)
Life and Healthcare Plan
Components of net periodic benefit cost
Service cost	212	192	258
Interest cost	270	268	283
Expected return on plan assets	0	0	0
Amortization of prior service (credit) cost	(62)	(62)	16
Recognized net actuarial loss	62	34	5
Net periodic benefit (credit) cost	482	432	562
Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)
Net actuarial loss (gain)	(1,337)	708	210
Recognized actuarial loss	(62)	(34)	(5)
Prior service credit	0	(964)	0
Recognized prior service cost (credit)	62	62	(16)
Recognized in other comprehensive income (loss)	(1,337)	(228)	189
Total recognized in net periodic benefit cost and other comprehensive income	(855)	204	751
SERP Plan
Components of net periodic benefit cost
Service cost	160	166	171
Interest cost	833	852	832
Expected return on plan assets	0	0	0
Amortization of prior service (credit) cost	87	87	75
Recognized net actuarial loss	539	399	358
Net periodic benefit (credit) cost	1,619	1,504	1,436
Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)
Net actuarial loss (gain)	(2,987)	2,407	697
Recognized actuarial loss	(539)	(399)	(358)
Prior service credit	0	0	188
Recognized prior service cost (credit)	(87)	(87)	(75)
Recognized in other comprehensive income (loss)	(3,613)	1,921	452
Total recognized in net periodic benefit cost and other comprehensive income	$ (1,994)	$ 3,425	$ 1,888

Employee Benefit Plans - Pre-Ta

Employee Benefit Plans - Pre-Tax Amounts Recognized as Component of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
DB Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial loss (gain)	$ 46,603	$ 39,960	$ 39,601
Prior service cost (credit)	(20)	(30)	(40)
Total	46,583	39,930	39,561
Actuarial loss	1,305
Prior service cost	(10)
Total	1,295
Life and Healthcare Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial loss (gain)	368	1,767	1,093
Prior service cost (credit)	(606)	(668)	235
Total	(238)	1,099	1,328
Actuarial loss	0
Prior service cost	(62)
Total	(62)
SERP Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial loss (gain)	5,560	9,086	7,077
Prior service cost (credit)	514	602	689
Total	6,074	$ 9,688	$ 7,766
Actuarial loss	286
Prior service cost	87
Total	$ 373

Employee Benefit Plans - Weighe

Employee Benefit Plans - Weighed Average Assumptions Used (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
DB Pension Plans
Discount Rates
Benefit Cost for Plan Year	3.43%	3.89%	4.05%
Benefit Obligation at End of Plan Year	4.08%	3.43%	3.89%
Expected long-term return on plan assets	7.25%	7.25%	7.25%
Life and Healthcare Plan
Discount Rates
Benefit Cost for Plan Year	3.51%	3.97%	4.14%
Benefit Obligation at End of Plan Year	4.13%	3.51%	3.97%
Rate of compensation increase
Benefit Cost for Plan Year	5.00%	5.00%	5.00%
Benefit Obligation at End of Plan Year	4.00%	5.00%	5.00%
SERP Plan
Discount Rates
Benefit Cost for Plan Year	3.55%	4.10%	4.32%
Benefit Obligation at End of Plan Year	4.16%	3.55%	4.10%
Rate of compensation increase
Benefit Cost for Plan Year	5.00%	5.00%	5.00%
Benefit Obligation at End of Plan Year	5.00%	5.00%	5.00%

Employee Benefit Plans - Benefi

Employee Benefit Plans - Benefits Expected to be Paid Next Five Years (Details) $ in Thousands	Dec. 31, 2018USD ($)
DB Pension Plans
Future Benefit Payments
2,019	$ 3,950
2,020	4,067
2,021	4,210
2,022	4,280
2,023	4,463
2024-2028	23,686
Total	44,656
Life and Healthcare Plan
Future Benefit Payments
2,019	529
2,020	477
2,021	430
2,022	416
2,023	439
2024-2028	2,162
Total	4,453
SERP Plan
Future Benefit Payments
2,019	673
2,020	697
2,021	688
2,022	740
2,023	845
2024-2028	4,475
Total	$ 8,118

Employee Benefit Plans - Pensio

Employee Benefit Plans - Pension Plan Weighted-Average Asset Allocations (Details) - DB Pension Plans	Dec. 31, 2018	Dec. 31, 2017
Defined Contribution Plan Disclosure [Line Items]
Weighted-average asset allocations	100.00%	100.00%
Equity securities
Defined Contribution Plan Disclosure [Line Items]
Weighted-average asset allocations	65.00%	65.00%
Debt securities
Defined Contribution Plan Disclosure [Line Items]
Weighted-average asset allocations	34.00%	34.00%
Other
Defined Contribution Plan Disclosure [Line Items]
Weighted-average asset allocations	1.00%	1.00%

Employee Benefit Plans - Major

Employee Benefit Plans - Major Categories of Assets in Pension Plan (Details) - DB Pension Plans - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value of Plan Assets	$ 72,474	$ 80,154	$ 71,807
(Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value of Plan Assets	72,474	80,154
(Level 2)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value of Plan Assets	0	0
(Level 3)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value of Plan Assets	0	0
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value of Plan Assets	1,018	448
Cash and cash equivalents | (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value of Plan Assets	1,018	448
Cash and cash equivalents | (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value of Plan Assets	0	0
Cash and cash equivalents | (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value of Plan Assets	0	0
Defined Benefit Plan, Equity Securities, Common Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value of Plan Assets	20,648	24,994
Defined Benefit Plan, Equity Securities, Common Stock [Member] | (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value of Plan Assets	20,648	24,994
Defined Benefit Plan, Equity Securities, Common Stock [Member] | (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value of Plan Assets	0	0
Defined Benefit Plan, Equity Securities, Common Stock [Member] | (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value of Plan Assets	0	0
Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value of Plan Assets	50,808	54,712
Mutual funds | (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value of Plan Assets	50,808	54,712
Mutual funds | (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value of Plan Assets	0	0
Mutual funds | (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value of Plan Assets	$ 0	$ 0

Stock Plans and Stock Based C_3

Stock Plans and Stock Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)	65,785	59,333	73,716
Stock-based compensation expense	$ 3,477	$ 2,956	$ 2,270
2009 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized number of awards (in shares)	1,602,000
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted during period (in shares)	0	0
Employee Stock Option | 2009 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award term (no more than)	10 years
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)	65,785	59,333	53,770
Stock-based compensation expense	$ 3,200	$ 2,600	$ 1,800
Period for recognition - unrecognized compensation cost (in shares)	3 years 9 months 15 days
Average grant date fair value (in dollars per share)	$ 75.44	$ 79.51	$ 76.93
Unrecognized compensation cost - RSUs	$ 13,300
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)			19,946
Stock options and SARs granted (in shares)	0	0
Stock Appreciation Rights (SARs) | 2009 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award term (no more than)	10 years
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 304	$ 367	$ 476
Unrecognized compensation cost - options	$ 600
Period for recognition - unrecognized compensation cost (in shares)	3 years
Minimum | Employee Stock Option | 2009 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	1 year
Minimum | Restricted Stock | 2009 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	5 years
Minimum | Stock Appreciation Rights (SARs) | 2009 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	1 year
Maximum | Employee Stock Option | 2009 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	7 years
Maximum | Restricted Stock | 2009 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	7 years
Maximum | Stock Appreciation Rights (SARs) | 2009 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	7 years

Stock Plans and Stock Based C_4

Stock Plans and Stock Based Compensation - Activity Related to Stock Options and SARs Under All Plans (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Number of Shares/Rights
Granted (in shares)	65,785	59,333	73,716
Outstanding, ending balance (in shares)	225,375
Exercisable, ending balance (in shares)	139,483
Weighted Average Exercise Price
Outstanding, ending balance (in dollars per share)	$ 48.02
Exercisable, ending balance (in dollars per share)	$ 44.06
Weighted Average Remaining Contractual Term
Outstanding (in years)	4 years 6 months 23 days
Stock Options And Stock Appreciation Rights
Number of Shares/Rights
Outstanding, beginning balance (in shares)	269,506
Granted (in shares)	0
Exercised (in shares)	(33,745)
Forfeited (in shares)	(10,386)
Outstanding, ending balance (in shares)	225,375	269,506
Exercisable, ending balance (in shares)	139,483
Weighted Average Exercise Price
Outstanding, beginning balance (in dollars per share)	$ 47.34
Granted (in dollars per share)	0
Exercised (in dollars per share)	41.22
Forfeited (in dollars per share)	52.53
Outstanding, ending balance (in dollars per share)	48.02	$ 47.34
Exercisable, ending balance (in dollars per share)	$ 44.06
Weighted Average Remaining Contractual Term
Outstanding (in years)	4 years 6 months 22 days
Exercisable (in years)	3 years 6 months 22 days
Aggregate Intrinsic Value
Outstanding	$ 6,118,933
Exercisable	$ 4,326,073

Stock Plans and Stock Based C_5

Stock Plans and Stock Based Compensation - Net Cash Proceeds, Tax Benefits and Intrinsic Value Related to Stock Options, SARs, and Restricted Stock (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Proceeds from stock option exercises	$ (540)	$ (641)	$ (806)
Tax benefits related to stock option exercises	680	1,634	1,433
Intrinsic value of stock option exercises	$ 1,447	$ 3,139	$ 3,718

Stock Plans and Stock Based C_6

Stock Plans and Stock Based Compensation - Valuation Assumptions (Details)	12 Months Ended
	Dec. 31, 2016$ / shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Weighted per share average fair value at grant date (in dollars per share)	$ 12.88
Risk-free interest rate	1.57%
Expected dividend yield	3.00%
Volatility	24.58%
Expected life (years)	5 years 6 months

Stock Plans and Stock Based C_7

Stock Plans and Stock Based Compensation - Options and SARs Outstanding and Exercisable (Details)	12 Months Ended
	Dec. 31, 2018$ / sharesshares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding (in shares) | shares	225,375
Weighted average remaining contractual life (in years)	4 years 6 months 23 days
Weighted average exercise price (in dollars per share)	$ 48.02
Number exercisable (in shares) | shares	139,483
Weighted average exercise price (in dollars per share)	$ 44.06
$35.71-37.50
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, lower range (in dollars per share)	35.71
Range of exercise prices, upper range (in dollars per share)	$ 37.5
Outstanding (in shares) | shares	42,598
Weighted average remaining contractual life (in years)	2 years 7 months 12 days
Weighted average exercise price (in dollars per share)	$ 37
Number exercisable (in shares) | shares	42,598
Weighted average exercise price (in dollars per share)	$ 37
$37.51-41.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, lower range (in dollars per share)	37.51
Range of exercise prices, upper range (in dollars per share)	$ 41
Outstanding (in shares) | shares	33,623
Weighted average remaining contractual life (in years)	4 years 3 months 9 days
Weighted average exercise price (in dollars per share)	$ 40.60
Number exercisable (in shares) | shares	19,444
Weighted average exercise price (in dollars per share)	$ 40.60
$41.01-50.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, lower range (in dollars per share)	41.01
Range of exercise prices, upper range (in dollars per share)	$ 50
Outstanding (in shares) | shares	90,478
Weighted average remaining contractual life (in years)	3 years 11 months 6 days
Weighted average exercise price (in dollars per share)	$ 46.43
Number exercisable (in shares) | shares	59,900
Weighted average exercise price (in dollars per share)	$ 45.01
$50.01-76.90
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, lower range (in dollars per share)	50.01
Range of exercise prices, upper range (in dollars per share)	$ 76.9
Outstanding (in shares) | shares	58,454
Weighted average remaining contractual life (in years)	7 years 1 month 6 days
Weighted average exercise price (in dollars per share)	$ 62.64
Number exercisable (in shares) | shares	17,485
Weighted average exercise price (in dollars per share)	$ 61.75
$76.91-86.18
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of exercise prices, lower range (in dollars per share)	76.91
Range of exercise prices, upper range (in dollars per share)	$ 86.18
Outstanding (in shares) | shares	222
Weighted average remaining contractual life (in years)	7 years 10 months 22 days
Weighted average exercise price (in dollars per share)	$ 86.18
Number exercisable (in shares) | shares	56
Weighted average exercise price (in dollars per share)	$ 86.18

Stock Plans and Stock Based C_8

Stock Plans and Stock Based Compensation - Activity Related to Restricted Stock Awards (Details)	12 Months Ended
	Dec. 31, 2018$ / sharesshares
Number of Shares
Unvested, beginning of year (in shares) | shares	261,373
Granted (in shares) | shares	65,785
Vested (in shares) | shares	(53,667)
Forfeited (in shares) | shares	(18,252)
Unvested, end of year (in shares) | shares	255,239
Weighted Average Fair Value
Beginning balance (in dollars per share) | $ / shares	$ 61.32
Granted (in dollars per share) | $ / shares	75.44
Vested (in dollars per share) | $ / shares	53.71
Forfeited (in dollars per share) | $ / shares	61.81
Ending balance (in dollars per share) | $ / shares	$ 66.52

Other Noninterest Income and _3

Other Noninterest Income and Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Income and Expenses [Abstract]
Reporting threshold for other income and operating expenses (percent, greater than)	1.00%
NONINTEREST INCOME
Other service charges	$ 3,263	$ 2,982	$ 2,671
Increase in cash surrender value of corporate owned life insurance	1,818	2,196	2,106
Net gain on sale of loans	458	50	95
Gain (loss) on sale of fixed assets	2,954	30	(7)
Other miscellaneous income	4,637	2,373	1,426
Total other noninterest income	13,130	7,631	6,291
NONINTEREST EXPENSES
Marketing expense	5,495	5,013	5,087
Professional fees	8,564	5,725	5,446
Technology expense	10,099	8,332	7,011
Cardholder expense	3,277	3,391	2,503
Other miscellaneous expenses	20,868	20,537	17,187
Total other noninterest expenses	$ 48,303	$ 42,998	$ 37,234

Revenue Recognition - Narrative

Revenue Recognition - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Retained earnings	$ 319,396	$ 265,007
Revenue, performance obligation, description of timing	one year or less
Noninterest Income (in-scope of ASC 606)	$ 65,961	63,091
Noninterest Income (out-of-scope of ASC 606)	11,488	6,113
Noninterest income	77,449	69,204	$ 68,808
Contract with customer, liability	1,800	1,700
Insurance
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract with customer, asset, net	4,300	4,000
Wealth Management
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract with customer, asset, net	1,800	1,900
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Retained earnings				$ 1,800
Contingent Income [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract with customer, asset, net	$ 1,900	$ 2,400

- Schedule of Disaggregation of

- Schedule of Disaggregation of Noninterest Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	$ 65,961	$ 63,091
Noninterest Income (out-of-scope of ASC 606)	11,488	6,113
Total Noninterest Income	77,449	69,204	$ 68,808
Noninterest income (out-of-scope of ASC 606), gain on sale of fixed asset	2,900
Commissions and Fees
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	27,272	26,412
Installment Billing
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	6	0
Refund of Commissions
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	(29)	0
Contract Liabilities/Deferred Revenue
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	(181)	(253)
Contingent commissions
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	2,301	2,619
Subtotal Insurance Revenues
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	29,369	28,778
Trust and Asset Management
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	11,848	10,049
Mutual Fund & Investment Income
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	5,440	5,616
Subtotal Investment Service Income
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	17,288	15,665
Service Charges on Deposit Accounts
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	8,435	8,437
Card Services Income
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	9,693	9,100
Other
Disaggregation of Revenue [Line Items]
Noninterest Income (in-scope of ASC 606)	$ 1,176	$ 1,111

Income Taxes - Income Tax Expen

Income Taxes - Income Tax Expense (Benefit) Attributable to Income from Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current
Federal	$ 16,391	$ 26,860	$ 22,943
State	3,060	1,162	2,243
Total	19,451	28,022	25,186
Deferred
Federal	2,281	14,749	1,551
State	73	(151)	308
Deferred tax expense	2,354	14,598	1,859
Federal Total	18,672	41,609	24,494
State Total	3,133	1,011	2,551
Tax expense (benefit)	$ 21,805	$ 42,620	$ 27,045

Income Taxes - Income Tax Rate

Income Taxes - Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	21.00%	35.00%	35.00%
State income taxes, net of federal benefit	2.40%	0.70%	1.90%
Tax exempt income	(1.50%)	(2.60%)	(2.70%)
Excess benefits from equity-based compensation	(0.60%)	(1.60%)	(1.40%)
Bank-owned life insurance income	(0.40%)	(0.80%)	(0.80%)
Federal tax credit	(0.60%)	(2.00%)	(0.40%)
Enactment of Federal tax reform	0.00%	15.70%	0.00%
All other	0.60%	0.40%	(0.30%)
Total	20.90%	44.80%	31.30%

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets:
Allowance for loan and lease losses	$ 10,676	$ 9,577	$ 13,737
Interest income on nonperforming loans	384	417	214
Compensation and benefits	10,885	10,406	14,504
Purchase accounting adjustments	0	0	527
Liabilities held at fair value	12	3	1
Other	2,333	2,515	3,088
Deferred Tax Assets, Net of Valuation Allowance	24,290	22,918	32,071
Total
Prepaid pension	8,700	8,140	11,439
Depreciation	4,193	2,686	3,006
Intangibles	971	776	882
Purchase accounting adjustments	328	194	0
Leases	1,790	1,145	1,687
Other	1,459	774	1,214
Total deferred tax liabilities	17,441	13,715	18,228
Net deferred tax asset at year-end	6,849	9,203	13,843
Net deferred tax asset at beginning of year	9,203	13,843	16,185
Decrease in net deferred tax asset	(2,354)	(4,640)	(2,342)
Purchase accounting adjustments, net	0	0	(483)
Federal tax reform remeasurement of AOCI deferred tax asset	0	9,958	0
Deferred tax expense	$ 2,354	$ 14,598	$ 1,859

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Net unrealized holding gains in available for sale securities, excluded from deferred tax assets (liabilities) calculation	$ 7,500,000	$ 4,300,000
Employee benefit plan deferred tax assets, excluded from deferred tax asset calculation	12,900,000	12,600,000
Federal tax reform remeasurement of AOCI deferred tax asset	0	9,958,000	$ 0
Deferred tax assets, valuation allowance	0	0
Unrecognized tax benefits	$ 0	0
Re-measurement of net deferred tax asset resulting in additional income tax expense		$ 14,900,000

Other Comprehensive Income (L_3

Other Comprehensive Income (Loss) - Tax Effect Allocated to Each Component of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Before-Tax Amount
Other Comprehensive Income, Net unrealized losses	$ (15,813)	$ (6,097)	$ (10,176)
Tax (Expense) Benefit
Other Comprehensive Income, Net unrealized losses	3,879	1,868	4,068
Net of Tax
Other comprehensive loss	(11,934)	(4,229)	(6,108)
Available-for-sale securities:
Before-Tax Amount
Change in net unrealized gains (losses) during the period	(14,550)	(4,442)	(7,689)
Reclassification adjustment for net realized loss on sale included in available-for-sale securities	440	407	(926)
Other Comprehensive Income, Net unrealized losses	(14,110)	(4,035)	(8,615)
Tax (Expense) Benefit
Change in net unrealized loss during the period	3,569	1,761	3,074
Reclassification adjustment for net realized loss on sale included in available-for-sale securities	(108)	(163)	370
Other Comprehensive Income, Net unrealized losses	3,461	1,598	3,444
Net of Tax
Change in net unrealized loss during the period	(10,981)	(2,681)	(4,615)
Reclassification adjustment for net realized loss on sale included in available-for-sale securities	332	244	(556)
Other comprehensive loss	(10,649)	(2,437)	(5,171)
Plan actuarial loss
Before-Tax Amount
Change in net unrealized gains (losses) during the period	(3,437)	(4,549)	(2,787)
Reclassification adjustment for net realized loss on sale included in available-for-sale securities	1,719	1,508	1,338
Tax (Expense) Benefit
Change in net unrealized loss during the period	843	1,115	1,114
Reclassification adjustment for net realized loss on sale included in available-for-sale securities	(421)	(603)	(535)
Net of Tax
Change in net unrealized loss during the period	(2,594)	(3,434)	(1,673)
Reclassification adjustment for net realized loss on sale included in available-for-sale securities	1,298	905	803
Net retirement plan prior service (cost) credit
Before-Tax Amount
Change in net unrealized gains (losses) during the period		964	(188)
Reclassification adjustment for net realized loss on sale included in available-for-sale securities	15	15	76
Tax (Expense) Benefit
Change in net unrealized loss during the period		(236)	75
Reclassification adjustment for net realized loss on sale included in available-for-sale securities	(4)	(6)	(30)
Net of Tax
Change in net unrealized loss during the period		728	(113)
Reclassification adjustment for net realized loss on sale included in available-for-sale securities	11	9	46
Employee benefit plans
Before-Tax Amount
Other Comprehensive Income, Net unrealized losses	(1,703)	(2,062)	(1,561)
Tax (Expense) Benefit
Other Comprehensive Income, Net unrealized losses	418	270	624
Net of Tax
Other comprehensive loss	$ (1,285)	$ (1,792)	$ (937)

Other Comprehensive Income (L_4

Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balances at beginning	$ 576,202	$ 549,405	$ 516,466
reclassification due to adoption of ASU 2018-02	0	(9,958)	0
Balances at ending	620,871	576,202	549,405
Available-for-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balances at beginning	(13,005)	(7,915)	(2,744)
Other comprehensive loss	(10,649)	(2,437)	(5,171)
reclassification due to adoption of ASU 2018-02		(2,653)
Balances at ending	(23,589)	(13,005)	(7,915)
Employee Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balances at beginning	(38,291)	(29,194)	(28,257)
Other comprehensive loss	(1,285)	(1,792)	(937)
reclassification due to adoption of ASU 2018-02		(7,305)
Balances at ending	(39,576)	(38,291)	(29,194)
Accumulated Other Comprehensive Income (loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balances at beginning	(51,296)	(37,109)	(31,001)
Other comprehensive loss	(11,934)	(4,229)	(6,108)
reclassification due to adoption of ASU 2018-02		(9,958)
Balances at ending	(63,165)	$ (51,296)	$ (37,109)
Accounting Standards Update 2016-01
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Adoption of ASU 2016-01				$ 0
Accounting Standards Update 2016-01 | Available-for-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Adoption of ASU 2016-01	65
Accounting Standards Update 2016-01 | Employee Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Adoption of ASU 2016-01	0
Accounting Standards Update 2016-01 | Accumulated Other Comprehensive Income (loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Adoption of ASU 2016-01	$ 65			$ 65

Other Comprehensive Income (L_5

Other Comprehensive Income (Loss) - Details about Accumulated Other Comprehensive Income (Loss) Components (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net (loss) gain on securities transactions	$ 23,808	$ 26,361	$ 27,842	$ 26,229	$ 20,981	$ 25,917	$ 25,207	$ 23,137	$ 104,240	$ 95,242	$ 86,516
Tax benefit									(21,805)	(42,620)	(27,045)
Other operating expense									(48,303)	(42,998)	(37,234)
Net income attributable to Tompkins Financial Corporation	$ 18,911	$ 20,902	$ 22,059	$ 20,436	$ 2,457	$ 17,394	$ 16,926	$ 15,717	82,308	52,494	$ 59,340
Amount Reclassified from Accumulated Other Comprehensive Income | Unrealized gains and losses on available-for-sale securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net (loss) gain on securities transactions									(440)	(407)
Tax benefit									108	163
Net of tax									(332)	(244)
Amount Reclassified from Accumulated Other Comprehensive Income | Net retirement plan actuarial gain
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other operating expense									(1,719)	(1,508)
Amount Reclassified from Accumulated Other Comprehensive Income | Net retirement plan prior service credit
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other operating expense									(15)	(15)
Amount Reclassified from Accumulated Other Comprehensive Income | Employee Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net (loss) gain on securities transactions									(1,734)	(1,523)
Tax benefit									425	609
Net income attributable to Tompkins Financial Corporation									$ (1,309)	$ (914)

Commitments and Contingent Li_3

Commitments and Contingent Liabilities (Details Narrative) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Loss Contingencies [Line Items]
Obligations to extend credit for loan commitments	$ 997,048	$ 991,604
Rate lock agreements	5,100
Agreements to sell mortgages on a loan-by-loan basis	2,700
Loan commitments
Loss Contingencies [Line Items]
Obligations to extend credit for loan commitments	156,111	148,611
Standby letters of credit
Loss Contingencies [Line Items]
Obligations to extend credit for loan commitments	21,685	27,805
Undisbursed portion of lines of credit
Loss Contingencies [Line Items]
Obligations to extend credit for loan commitments	$ 819,252	$ 815,188

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Basic
Net income available to common shareholders	$ 18,911	$ 20,902	$ 22,059	$ 20,436	$ 2,457	$ 17,394	$ 16,926	$ 15,717	$ 82,308	$ 52,494	$ 59,340
Less: dividends and undistributed earnings allocated to unvested restricted stock awards									(1,315)	(818)	(912)
Net earnings allocated to common shareholders									$ 80,993	$ 51,676	$ 58,428
Weighted average shares outstanding, including unvested stock-based compensation awards (in shares)									15,283,914	15,193,438	15,044,733
Less: unvested stock-based compensation awards (in shares)									(244,685)	(243,006)	(232,021)
Weighted average shares outstanding - Basic (in shares)									15,039,229	14,950,432	14,812,712
Diluted
Net earnings allocated to common shareholders									$ 80,993	$ 51,676	$ 58,428
Weighted average shares outstanding - Basic (in shares)									15,039,229	14,950,432	14,812,712
Plus: incremental shares from assumed conversion of stock-based compensation awards (in shares)									93,028	122,823	123,519
Weighted average shares outstanding - Diluted (in shares)									15,132,257	15,073,255	14,936,231
Basic EPS (in dollars per share)	$ 1.24	$ 1.37	$ 1.44	$ 1.34	$ 0.16	$ 1.14	$ 1.11	$ 1.04	$ 5.39	$ 3.46	$ 3.94
Diluted EPS (in dollars per share)	$ 1.23	$ 1.36	$ 1.43	$ 1.33	$ 0.16	$ 1.14	$ 1.11	$ 1.03	$ 5.35	$ 3.43	$ 3.91
Antidilutive securities excluded from computation of earning per share (in shares)									10,013	20,789	72,321

Fair Value Measurements - Finan

Fair Value Measurements - Financial Assets and Financial Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	$ 1,332,658	$ 1,391,862
Equity securities	887	913
Fair Value		1,392,775
U.S. Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	289
Obligations of U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	485,898
Fair Value		504,193
Obligations of U.S. states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	85,440
Fair Value		91,519
U.S. Government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	128,267
Fair Value		137,735
U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	630,558
Fair Value		656,178
Non-U.S. Government agencies or sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	31
Fair Value		75
U.S. corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	2,175
Fair Value		2,162
Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value		913
Recurring | (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0	0
Recurring | (Level 1) | U.S. Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0
Recurring | (Level 1) | Obligations of U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0
Fair Value		0
Recurring | (Level 1) | Obligations of U.S. states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0
Fair Value		0
Recurring | (Level 1) | U.S. Government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0
Fair Value		0
Recurring | (Level 1) | U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0
Fair Value		0
Recurring | (Level 1) | Non-U.S. Government agencies or sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0
Fair Value		0
Recurring | (Level 1) | U.S. corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0
Fair Value		0
Recurring | (Level 1) | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0
Fair Value		0
Recurring | (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	1,332,658	1,391,862
Recurring | (Level 2) | U.S. Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	289
Recurring | (Level 2) | Obligations of U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	485,898
Fair Value		504,193
Recurring | (Level 2) | Obligations of U.S. states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	85,440
Fair Value		91,519
Recurring | (Level 2) | U.S. Government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	128,267
Fair Value		137,735
Recurring | (Level 2) | U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	630,558
Fair Value		656,178
Recurring | (Level 2) | Non-U.S. Government agencies or sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	31
Fair Value		75
Recurring | (Level 2) | U.S. corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	2,175
Fair Value		2,162
Recurring | (Level 2) | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0
Fair Value		0
Recurring | (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0	0
Recurring | (Level 3) | U.S. Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0
Recurring | (Level 3) | Obligations of U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0
Fair Value		0
Recurring | (Level 3) | Obligations of U.S. states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0
Fair Value		0
Recurring | (Level 3) | U.S. Government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0
Fair Value		0
Recurring | (Level 3) | U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0
Fair Value		0
Recurring | (Level 3) | Non-U.S. Government agencies or sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0
Fair Value		0
Recurring | (Level 3) | U.S. corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	0
Fair Value		0
Recurring | (Level 3) | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	887
Fair Value		913
Change in fair value of available-for-sale securities using level 3 inputs	0	0
Fair Value | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	1,332,658	1,391,862
Fair Value | Recurring | U.S. Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	289
Fair Value | Recurring | Obligations of U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	485,898
Fair Value		504,193
Fair Value | Recurring | Obligations of U.S. states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	85,440
Fair Value		91,519
Fair Value | Recurring | U.S. Government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	128,267
Fair Value		137,735
Fair Value | Recurring | U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	630,558
Fair Value		656,178
Fair Value | Recurring | Non-U.S. Government agencies or sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	31
Fair Value		75
Fair Value | Recurring | U.S. corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, at fair value	2,175
Fair Value		2,162
Fair Value | Recurring | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	$ 887
Fair Value		$ 913

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value Measurements at Reporting Date and Gain (Losses) from Fair Value Changes. (Details) - Non-Recurring - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 6,500	$ 4,617
Other real estate owned	1,594	2,047
Gain (losses) from fair value changes, Impaired Loans	(173)	(332)
Gain (losses) from fair value changes, Other real estate owned	(211)	(532)
(Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Other real estate owned	0	0
(Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	6,500	4,617
Other real estate owned	1,594	2,047
(Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Other real estate owned	$ 0	$ 0

Fair Value Measurements - Estim

Fair Value Measurements - Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair value of financial assets
Securities - held-to-maturity	$ 139,377	$ 140,315
FHLB and FRB stock	52,262	50,498
Financial Liabilities:
Time deposits	637,295	748,250
Securities sold under agreements to repurchase	81,842	75,177
Other borrowings	1,076,075	1,071,742
Trust preferred debentures	16,863	16,691
(Level 1)
Fair value of financial assets
Cash and cash equivalents	80,389	84,303
Securities - held-to-maturity	0	0
FHLB and FRB stock	0	0
Accrued interest receivable	0	0
Loans and leases, net	0	0
Financial Liabilities:
Time deposits	0	0
Other deposits	0	0
Securities sold under agreements to repurchase	0	0
Other borrowings	0	0
Trust preferred debentures	0	0
Accrued interest payable	0	0
(Level 2)
Fair value of financial assets
Cash and cash equivalents	0	0
Securities - held-to-maturity	139,377	140,315
FHLB and FRB stock	52,262	50,498
Accrued interest receivable	20,922	20,122
Loans and leases, net	6,500	4,617
Financial Liabilities:
Time deposits	631,489	744,310
Other deposits	4,251,664	4,089,557
Securities sold under agreements to repurchase	81,842	75,177
Other borrowings	1,074,081	1,069,609
Trust preferred debentures	21,921	22,012
Accrued interest payable	2,408	2,054
(Level 3)
Fair value of financial assets
Cash and cash equivalents	0	0
Securities - held-to-maturity	0	0
FHLB and FRB stock	0	0
Accrued interest receivable	0	0
Loans and leases, net	4,642,808	4,551,103
Financial Liabilities:
Time deposits	0	0
Other deposits	0	0
Securities sold under agreements to repurchase	0	0
Other borrowings	0	0
Trust preferred debentures	0	0
Accrued interest payable	0	0
Carrying Amount
Fair value of financial assets
Cash and cash equivalents	80,389	84,303
Securities - held-to-maturity	140,579	139,216
FHLB and FRB stock	52,262	50,498
Accrued interest receivable	20,922	20,122
Loans and leases, net	4,790,529	4,632,288
Financial Liabilities:
Time deposits	637,295	748,250
Other deposits	4,251,664	4,089,557
Securities sold under agreements to repurchase	81,842	75,177
Other borrowings	1,076,075	1,071,742
Trust preferred debentures	16,863	16,691
Accrued interest payable	2,408	2,054
Fair Value
Fair value of financial assets
Cash and cash equivalents	80,389	84,303
Securities - held-to-maturity	139,377	140,315
FHLB and FRB stock	52,262	50,498
Accrued interest receivable	20,922	20,122
Loans and leases, net	4,649,308	4,555,720
Financial Liabilities:
Time deposits	631,489	744,310
Other deposits	4,251,664	4,089,557
Securities sold under agreements to repurchase	81,842	75,177
Other borrowings	1,074,081	1,069,609
Trust preferred debentures	21,921	22,012
Accrued interest payable	$ 2,408	$ 2,054

Regulations and Supervision (De

Regulations and Supervision (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2018USD ($)banking_office	Dec. 31, 2018USD ($)subsidiary_bank	Dec. 31, 2018USD ($)subsidiary_trust	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Reclassification from accumulated other comprehensive income (loss) to retained earnings	$ 0				$ 9,958	$ 0
Number of subsidiary banks		4	3	4
Castile
Total Capital (to risk-weighted assets)
Total Capital (to risk-weighted assets), Actual Amount	$ 138,816	$ 138,816	$ 138,816	$ 138,816	$ 125,510
Total Capital (to risk-weighted assets), Actual Ratio	11.70%	11.70%	11.70%	11.70%	11.30%
Total Capital (to risk-weighted assets), Required to be Adequately Capitalized, Amount	$ 124,738	$ 124,738	$ 124,738	$ 124,738	$ 117,042
Total Capital (to risk-weighted assets), Required to be Adequately Capitalized, Ratio	10.50%	10.50%	10.50%	10.50%	10.50%
Total Capital (to risk-weighted assets), Required to be Well Capitalized, Amount	$ 118,798	$ 118,798	$ 118,798	$ 118,798	$ 111,469
Total Capital (to risk-weighted assets), Required to be Well Capitalized, Ratio	10.00%	10.00%	10.00%	10.00%	10.00%
Common EquityTier 1 Capital (to risk-weighted assets)
Common Equity Tier 1 Capital (to risk-weighted assets), Actual Amount	$ 129,482	$ 129,482	$ 129,482	$ 129,482	$ 116,783
Common Equity Tier 1 Capital (to risk-weighted assets), Actual Ratio	10.90%	10.90%	10.90%	10.90%	10.50%
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Amount	$ 83,159	$ 83,159	$ 83,159	$ 83,159	$ 78,028
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Ratio	7.00%	7.00%	7.00%	7.00%	7.00%
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Amount	$ 77,219	$ 77,219	$ 77,219	$ 77,219	$ 72,455
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Ratio	6.50%	6.50%	6.50%	6.50%	6.50%
Tier 1 Capital (to risk-weighted assets)
Tier 1 Capital (to risk-weighted assets), Actual Amount	$ 129,482	$ 129,482	$ 129,482	$ 129,482	$ 116,783
Tier 1 Capital (to risk-weighted assets), Actual Ratio	10.90%	10.90%	10.90%	10.90%	10.50%
Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Amount	$ 100,978	$ 100,978	$ 100,978	$ 100,978	$ 94,748
Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Ratio	8.50%	8.50%	8.50%	8.50%	8.50%
Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Amount	$ 95,038	$ 95,038	$ 95,038	$ 95,038	$ 89,175
Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Ratio	8.00%	8.00%	8.00%	8.00%	8.00%
Tier 1 Capital (to average assets)
Tier 1 Capital (to average assets), Actual Amount	$ 129,482	$ 129,482	$ 129,482	$ 129,482	$ 116,783
Tier 1 Capital (to average assets), Actual Ratio	8.60%	8.60%	8.60%	8.60%	8.10%
Tier 1 Capital (to average assets), Required to be Adequately Capitalized, Amount	$ 60,368	$ 60,368	$ 60,368	$ 60,368	$ 57,833
Tier 1 Capital (to average assets), Required to be Adequately Capitalized, Ratio	4.00%	4.00%	4.00%	4.00%	4.00%
Tier 1 Capital (to average assets), Required to be Well Capitalized, Amount	$ 75,460	$ 75,460	$ 75,460	$ 75,460	$ 72,292
Tier 1 Capital (to average assets), Required to be Well Capitalized, Ratio	5.00%	5.00%	5.00%	5.00%	5.00%
Mahopac
Total Capital (to risk-weighted assets)
Total Capital (to risk-weighted assets), Actual Amount	$ 126,342	$ 126,342	$ 126,342	$ 126,342	$ 117,740
Total Capital (to risk-weighted assets), Actual Ratio	12.70%	12.70%	12.70%	12.70%	12.10%
Total Capital (to risk-weighted assets), Required to be Adequately Capitalized, Amount	$ 104,146	$ 104,146	$ 104,146	$ 104,146	$ 102,555
Total Capital (to risk-weighted assets), Required to be Adequately Capitalized, Ratio	10.50%	10.50%	10.50%	10.50%	10.50%
Total Capital (to risk-weighted assets), Required to be Well Capitalized, Amount	$ 99,186	$ 99,186	$ 99,186	$ 99,186	$ 97,672
Total Capital (to risk-weighted assets), Required to be Well Capitalized, Ratio	10.00%	10.00%	10.00%	10.00%	10.00%
Common EquityTier 1 Capital (to risk-weighted assets)
Common Equity Tier 1 Capital (to risk-weighted assets), Actual Amount	$ 114,327	$ 114,327	$ 114,327	$ 114,327	$ 105,979
Common Equity Tier 1 Capital (to risk-weighted assets), Actual Ratio	11.50%	11.50%	11.50%	11.50%	10.90%
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Amount	$ 69,431	$ 69,431	$ 69,431	$ 69,431	$ 68,370
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Ratio	7.00%	7.00%	7.00%	7.00%	7.00%
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Amount	$ 64,471	$ 64,471	$ 64,471	$ 64,471	$ 63,487
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Ratio	6.50%	6.50%	6.50%	6.50%	6.50%
Tier 1 Capital (to risk-weighted assets)
Tier 1 Capital (to risk-weighted assets), Actual Amount	$ 114,327	$ 114,327	$ 114,327	$ 114,327	$ 105,979
Tier 1 Capital (to risk-weighted assets), Actual Ratio	11.50%	11.50%	11.50%	11.50%	10.90%
Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Amount	$ 84,309	$ 84,309	$ 84,309	$ 84,309	$ 83,021
Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Ratio	8.50%	8.50%	8.50%	8.50%	8.50%
Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Amount	$ 79,349	$ 79,349	$ 79,349	$ 79,349	$ 78,137
Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Ratio	8.00%	8.00%	8.00%	8.00%	8.00%
Tier 1 Capital (to average assets)
Tier 1 Capital (to average assets), Actual Amount	$ 114,327	$ 114,327	$ 114,327	$ 114,327	$ 105,979
Tier 1 Capital (to average assets), Actual Ratio	8.40%	8.40%	8.40%	8.40%	8.10%
Tier 1 Capital (to average assets), Required to be Adequately Capitalized, Amount	$ 54,219	$ 54,219	$ 54,219	$ 54,219	$ 52,463
Tier 1 Capital (to average assets), Required to be Adequately Capitalized, Ratio	4.00%	4.00%	4.00%	4.00%	4.00%
Tier 1 Capital (to average assets), Required to be Well Capitalized, Amount	$ 67,773	$ 67,773	$ 67,773	$ 67,773	$ 65,578
Tier 1 Capital (to average assets), Required to be Well Capitalized, Ratio	5.00%	5.00%	5.00%	5.00%	5.00%
VIST
Total Capital (to risk-weighted assets)
Total Capital (to risk-weighted assets), Actual Amount	$ 158,557	$ 158,557	$ 158,557	$ 158,557	$ 148,185
Total Capital (to risk-weighted assets), Actual Ratio	11.70%	11.70%	11.70%	11.70%	11.40%
Total Capital (to risk-weighted assets), Required to be Adequately Capitalized, Amount	$ 142,048	$ 142,048	$ 142,048	$ 142,048	$ 136,518
Total Capital (to risk-weighted assets), Required to be Adequately Capitalized, Ratio	10.50%	10.50%	10.50%	10.50%	10.50%
Total Capital (to risk-weighted assets), Required to be Well Capitalized, Amount	$ 135,284	$ 135,284	$ 135,284	$ 135,284	$ 130,017
Total Capital (to risk-weighted assets), Required to be Well Capitalized, Ratio	10.00%	10.00%	10.00%	10.00%	10.00%
Common EquityTier 1 Capital (to risk-weighted assets)
Common Equity Tier 1 Capital (to risk-weighted assets), Actual Amount	$ 146,131	$ 146,131	$ 146,131	$ 146,131	$ 138,901
Common Equity Tier 1 Capital (to risk-weighted assets), Actual Ratio	10.80%	10.80%	10.80%	10.80%	10.70%
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Amount	$ 94,699	$ 94,699	$ 94,699	$ 94,699	$ 91,012
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Ratio	7.00%	7.00%	7.00%	7.00%	7.00%
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Amount	$ 87,934	$ 87,934	$ 87,934	$ 87,934	$ 84,511
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Ratio	6.50%	6.50%	6.50%	6.50%	6.50%
Tier 1 Capital (to risk-weighted assets)
Tier 1 Capital (to risk-weighted assets), Actual Amount	$ 146,131	$ 146,131	$ 146,131	$ 146,131	$ 138,901
Tier 1 Capital (to risk-weighted assets), Actual Ratio	10.80%	10.80%	10.80%	10.80%	10.70%
Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Amount	$ 114,991	$ 114,991	$ 114,991	$ 114,991	$ 110,515
Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Ratio	8.50%	8.50%	8.50%	8.50%	8.50%
Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Amount	$ 108,227	$ 108,227	$ 108,227	$ 108,227	$ 104,014
Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Ratio	8.00%	8.00%	8.00%	8.00%	8.00%
Tier 1 Capital (to average assets)
Tier 1 Capital (to average assets), Actual Amount	$ 146,131	$ 146,131	$ 146,131	$ 146,131	$ 138,901
Tier 1 Capital (to average assets), Actual Ratio	8.80%	8.80%	8.80%	8.80%	8.60%
Tier 1 Capital (to average assets), Required to be Adequately Capitalized, Amount	$ 66,282	$ 66,282	$ 66,282	$ 66,282	$ 64,647
Tier 1 Capital (to average assets), Required to be Adequately Capitalized, Ratio	4.00%	4.00%	4.00%	4.00%	4.00%
Tier 1 Capital (to average assets), Required to be Well Capitalized, Amount	$ 82,853	$ 82,853	$ 82,853	$ 82,853	$ 80,809
Tier 1 Capital (to average assets), Required to be Well Capitalized, Ratio	5.00%	5.00%	5.00%	5.00%	5.00%
The Company (consolidated)
Total Capital (to risk-weighted assets)
Total Capital (to risk-weighted assets), Actual Amount	$ 645,891	$ 645,891	$ 645,891	$ 645,891	$ 585,013
Total Capital (to risk-weighted assets), Actual Ratio	13.10%	13.10%	13.10%	13.10%	12.30%
Total Capital (to risk-weighted assets), Required to be Adequately Capitalized, Amount	$ 517,500	$ 517,500	$ 517,500	$ 517,500	$ 500,676
Total Capital (to risk-weighted assets), Required to be Adequately Capitalized, Ratio	10.50%	10.50%	10.50%	10.50%	10.50%
Total Capital (to risk-weighted assets), Required to be Well Capitalized, Amount	$ 492,857	$ 492,857	$ 492,857	$ 492,857	$ 476,835
Total Capital (to risk-weighted assets), Required to be Well Capitalized, Ratio	10.00%	10.00%	10.00%	10.00%	10.00%
Common EquityTier 1 Capital (to risk-weighted assets)
Common Equity Tier 1 Capital (to risk-weighted assets), Actual Amount	$ 583,458	$ 583,458	$ 583,458	$ 583,458	$ 526,822
Common Equity Tier 1 Capital (to risk-weighted assets), Actual Ratio	11.80%	11.80%	11.80%	11.80%	11.10%
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Amount	$ 345,000	$ 345,000	$ 345,000	$ 345,000	$ 333,784
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Ratio	7.00%	7.00%	7.00%	7.00%	7.00%
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Amount	$ 320,357	$ 320,357	$ 320,357	$ 320,357	$ 309,943
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Ratio	6.50%	6.50%	6.50%	6.50%	6.50%
Tier 1 Capital (to risk-weighted assets)
Tier 1 Capital (to risk-weighted assets), Actual Amount	$ 600,321	$ 600,321	$ 600,321	$ 600,321	$ 543,514
Tier 1 Capital (to risk-weighted assets), Actual Ratio	12.20%	12.20%	12.20%	12.20%	11.40%
Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Amount	$ 418,929	$ 418,929	$ 418,929	$ 418,929	$ 405,310
Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Ratio	8.50%	8.50%	8.50%	8.50%	8.50%
Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Amount	$ 394,286	$ 394,286	$ 394,286	$ 394,286	$ 381,468
Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Ratio	8.00%	8.00%	8.00%	8.00%	8.00%
Tier 1 Capital (to average assets)
Tier 1 Capital (to average assets), Actual Amount	$ 600,321	$ 600,321	$ 600,321	$ 600,321	$ 543,514
Tier 1 Capital (to average assets), Actual Ratio	9.10%	9.10%	9.10%	9.10%	8.40%
Tier 1 Capital (to average assets), Required to be Adequately Capitalized, Amount	$ 265,465	$ 265,465	$ 265,465	$ 265,465	$ 257,887
Tier 1 Capital (to average assets), Required to be Adequately Capitalized, Ratio	4.00%	4.00%	4.00%	4.00%	4.00%
Tier 1 Capital (to average assets), Required to be Well Capitalized, Amount	$ 331,832	$ 331,832	$ 331,832	$ 331,832	$ 322,359
Tier 1 Capital (to average assets), Required to be Well Capitalized, Ratio	5.00%	5.00%	5.00%	5.00%	5.00%
Trust Company
Total Capital (to risk-weighted assets)
Total Capital (to risk-weighted assets), Actual Amount	$ 191,872	$ 191,872	$ 191,872	$ 191,872	$ 171,774
Total Capital (to risk-weighted assets), Actual Ratio	13.90%	13.90%	13.90%	13.90%	12.50%
Total Capital (to risk-weighted assets), Required to be Adequately Capitalized, Amount	$ 144,822	$ 144,822	$ 144,822	$ 144,822	$ 144,235
Total Capital (to risk-weighted assets), Required to be Adequately Capitalized, Ratio	10.50%	10.50%	10.50%	10.50%	10.50%
Total Capital (to risk-weighted assets), Required to be Well Capitalized, Amount	$ 137,926	$ 137,926	$ 137,926	$ 137,926	$ 137,366
Total Capital (to risk-weighted assets), Required to be Well Capitalized, Ratio	10.00%	10.00%	10.00%	10.00%	10.00%
Common EquityTier 1 Capital (to risk-weighted assets)
Common Equity Tier 1 Capital (to risk-weighted assets), Actual Amount	$ 180,077	$ 180,077	$ 180,077	$ 180,077	$ 160,047
Common Equity Tier 1 Capital (to risk-weighted assets), Actual Ratio	13.10%	13.10%	13.10%	13.10%	11.70%
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Amount	$ 96,548	$ 96,548	$ 96,548	$ 96,548	$ 96,156
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Ratio	7.00%	7.00%	7.00%	7.00%	7.00%
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Amount	$ 89,652	$ 89,652	$ 89,652	$ 89,652	$ 89,288
Common Equity Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Ratio	6.50%	6.50%	6.50%	6.50%	6.50%
Tier 1 Capital (to risk-weighted assets)
Tier 1 Capital (to risk-weighted assets), Actual Amount	$ 180,077	$ 180,077	$ 180,077	$ 180,077	$ 160,047
Tier 1 Capital (to risk-weighted assets), Actual Ratio	13.10%	13.10%	13.10%	13.10%	11.70%
Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Amount	$ 117,237	$ 117,237	$ 117,237	$ 117,237	$ 116,761
Tier 1 Capital (to risk-weighted assets), Required to be Adequately Capitalized, Ratio	8.50%	8.50%	8.50%	8.50%	8.50%
Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Amount	$ 110,341	$ 110,341	$ 110,341	$ 110,341	$ 109,893
Tier 1 Capital (to risk-weighted assets), Required to be Well Capitalized, Ratio	8.00%	8.00%	8.00%	8.00%	8.00%
Tier 1 Capital (to average assets)
Tier 1 Capital (to average assets), Actual Amount	$ 180,077	$ 180,077	$ 180,077	$ 180,077	$ 160,047
Tier 1 Capital (to average assets), Actual Ratio	8.50%	8.50%	8.50%	8.50%	7.80%
Tier 1 Capital (to average assets), Required to be Adequately Capitalized, Amount	$ 84,592	$ 84,592	$ 84,592	$ 84,592	$ 82,425
Tier 1 Capital (to average assets), Required to be Adequately Capitalized, Ratio	4.00%	4.00%	4.00%	4.00%	4.00%
Tier 1 Capital (to average assets), Required to be Well Capitalized, Amount	$ 105,740	$ 105,740	$ 105,740	$ 105,740	$ 103,031
Tier 1 Capital (to average assets), Required to be Well Capitalized, Ratio	5.00%	5.00%	5.00%	5.00%	5.00%
Retained Earnings
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Reclassification from accumulated other comprehensive income (loss) to retained earnings	$ 10,000

Condensed Parent Company Only_3

Condensed Parent Company Only Financial Statements - Condensed Statements of Condition (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
ASSETS
Investment in subsidiaries, at equity	$ 1,400	$ 1,700
Total Assets	6,758,436	6,648,290	$ 6,236,756
Liabilities and Shareholders’ Equity
Trust preferred debentures issued to non-consolidated subsidiary	16,863	16,691
Other liabilities	73,826	70,671
Tompkins Financial Corporation Shareholders’ Equity	619,459	574,780
Total Liabilities and Equity	6,758,436	6,648,290
Tompkins (the Parent Company)
ASSETS
Cash	6,235	3,326
Investment in subsidiaries, at equity	625,193	586,976
Other	9,416	10,686
Total Assets	640,844	600,988
Liabilities and Shareholders’ Equity
Borrowings	4,000	9,000
Trust preferred debentures issued to non-consolidated subsidiary	16,863	16,691
Other liabilities	522	517
Tompkins Financial Corporation Shareholders’ Equity	619,459	574,780
Total Liabilities and Equity	$ 640,844	$ 600,988

Condensed Parent Company Only_4

Condensed Parent Company Only Financial Statements - Condensed Statement of Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Income Statements, Captions [Line Items]
Interest expense	$ 12,089	$ 10,821	$ 9,429	$ 7,453	$ 7,060	$ 6,772	$ 6,041	$ 5,587	$ 39,792	$ 25,460	$ 22,103
Net (loss) gain on securities transactions	23,808	26,361	27,842	26,229	20,981	25,917	25,207	23,137	104,240	95,242	86,516
Income tax benefit									(21,805)	(42,620)	(27,045)
Net Income Attributable to Tompkins Financial Corporation	$ 18,911	$ 20,902	$ 22,059	$ 20,436	$ 2,457	$ 17,394	$ 16,926	$ 15,717	82,308	52,494	59,340
Tompkins (the Parent Company)
Condensed Income Statements, Captions [Line Items]
Dividends received from subsidiaries									44,518	33,522	47,584
Other income									332	281	269
Total Operating Income									44,850	33,803	47,853
Interest expense									1,468	1,550	2,743
Other expenses									7,222	6,120	6,089
Total Operating Expenses									8,690	7,670	8,832
Net (loss) gain on securities transactions									36,160	26,133	39,021
Income tax benefit									1,687	1,867	3,549
Equity in undistributed earnings of subsidiaries									44,461	24,494	16,770
Net Income Attributable to Tompkins Financial Corporation									$ 82,308	$ 52,494	$ 59,340

Condensed Parent Company Only_5

Condensed Parent Company Only Financial Statements - Condensed Cash Flow Statements (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating activities
Net Income	$ 18,911	$ 20,902	$ 22,059	$ 20,436	$ 2,457	$ 17,394	$ 16,926	$ 15,717	$ 82,308	$ 52,494	$ 59,340
Adjustments to reconcile net income to net cash provided by operating activities
Other, net									(3,468)	1,057	(2,093)
Investing activities
Other, net									216	2,576	119
Financing activities
Cash dividends									(29,634)	(27,627)	(26,603)
Repurchase of common shares									(2,448)	0	(1,166)
Redemption of trust preferred debentures									0	(21,161)	0
Shares issued for dividend reinvestment plans									0	2,872	3,201
Shares issued for employee stock ownership plan									3,073	2,296	1,938
Proceeds from stock option exercises									(540)	(641)	(806)
Net (Decrease) Increase Cash and Cash Equivalents									(3,914)	20,349	5,697
Cash and cash equivalents at beginning of year				84,303				63,954	84,303	63,954	58,257
Total Cash & Cash Equivalents at End of Year	80,389				84,303				80,389	84,303	63,954
Tompkins (the Parent Company)
Operating activities
Net Income									82,308	52,494	59,340
Adjustments to reconcile net income to net cash provided by operating activities
Equity in undistributed earnings of subsidiaries									(44,461)	(24,494)	(16,770)
Other, net									1,014	(1,569)	1,826
Net Cash Provided by Operating Activities									38,861	26,431	44,396
Investing activities
Other, net									0	1,052	24
Net Cash Provided by Investing Activities									0	1,052	24
Financing activities
Borrowings, net									(5,000)	(28,161)	2,490
Cash dividends									(29,634)	(27,627)	(26,603)
Repurchase of common shares									(2,448)	0	(1,166)
Redemption of trust preferred debentures									(1,403)	(1,294)	(835)
Shares issued for dividend reinvestment plans									0	2,872	3,201
Shares issued for employee stock ownership plan									3,073	2,296	1,938
Proceeds from stock option exercises									(540)	(641)	(806)
Net Cash Used in Financing Activities									(35,952)	(52,555)	(21,781)
Net (Decrease) Increase Cash and Cash Equivalents									2,909	(25,072)	22,639
Cash and cash equivalents at beginning of year				$ 3,326				$ 28,398	3,326	28,398	5,759
Total Cash & Cash Equivalents at End of Year	$ 6,235				$ 3,326				$ 6,235	$ 3,326	$ 28,398

Segment and Related Informati_3

Segment and Related Information - Narrative (Details) - 12 months ended Dec. 31, 2018	segment	banking_office	subsidiary_bank	subsidiary_trust	office
Segment Reporting Information [Line Items]
Number of reportable business segments | segment	3
Number of subsidiary banks		4	3	4
Ithaca, NY
Segment Reporting Information [Line Items]
Number of banking offices		14
Genesee Valley Region
Segment Reporting Information [Line Items]
Number of banking offices		18
Counties North of New York City
Segment Reporting Information [Line Items]
Number of banking offices		14
Southeastern Pennsylvania
Segment Reporting Information [Line Items]
Number of banking offices		20
Western New York
Segment Reporting Information [Line Items]
Nature of operations, number of offices | office					5

Segment and Related Informati_4

Segment and Related Information - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Interest income	$ 65,325	$ 63,984	$ 62,143	$ 60,140	$ 59,029	$ 57,772	$ 56,342	$ 53,621	$ 251,592	$ 226,764	$ 202,739
Interest expense	12,089	10,821	9,429	7,453	7,060	6,772	6,041	5,587	39,792	25,460	22,103
Net Interest Income	53,236	53,163	52,714	52,687	51,969	51,000	50,301	48,034	211,800	201,304	180,636
Provision for loan and lease losses	2,058	272	1,045	567	2,014	402	976	769	3,942	4,161	4,321
Noninterest income									77,449	69,204	68,808
Noninterest expense									181,067	171,105	158,607
Income Before Income Tax Expense	23,808	26,361	27,842	26,229	20,981	25,917	25,207	23,137	104,240	95,242	86,516
Income Tax Expense									21,805	42,620	27,045
Net Income Attributable to Noncontrolling Interests and Tompkins Financial Corporation									82,435	52,622	59,471
Less: Net income attributable to noncontrolling interests									127	128	131
Net Income Attributable to Tompkins Financial Corporation	18,911	$ 20,902	$ 22,059	$ 20,436	2,457	$ 17,394	$ 16,926	$ 15,717	82,308	52,494	59,340
Depreciation and amortization									9,554	8,269	6,829
Assets	6,758,436				6,648,290				6,758,436	6,648,290	6,236,756
Goodwill	92,283				92,291				92,283	92,291	92,623
Other intangibles, net	7,628				9,263				7,628	9,263	11,349
Net loans and leases	4,790,529				4,629,349				4,790,529	4,629,349	4,222,278
Deposits	4,888,959				4,837,807				4,888,959	4,837,807	4,625,139
Total equity	620,871				576,202				620,871	576,202	549,405	$ 516,466
Banking
Segment Reporting Information [Line Items]
Goodwill	64,369				64,369				64,369	64,369	64,369
Insurance
Segment Reporting Information [Line Items]
Goodwill	19,703				19,711				19,703	19,711	20,043
Wealth Management
Segment Reporting Information [Line Items]
Goodwill	8,211				8,211				8,211	8,211	8,211
Operating Segments | Banking
Segment Reporting Information [Line Items]
Interest income									251,592	226,764	202,739
Interest expense									39,795	25,462	22,105
Net Interest Income									211,797	201,302	180,634
Provision for loan and lease losses									3,942	4,161	4,321
Noninterest income									31,738	25,498	24,402
Noninterest expense									145,070	135,750	123,004
Income Before Income Tax Expense									94,523	86,889	77,711
Income Tax Expense									19,486	39,731	23,928
Net Income Attributable to Noncontrolling Interests and Tompkins Financial Corporation									75,037	47,158	53,783
Less: Net income attributable to noncontrolling interests									127	128	131
Net Income Attributable to Tompkins Financial Corporation									74,910	47,030	53,652
Depreciation and amortization									9,194	7,927	6,401
Assets	6,707,625				6,602,242				6,707,625	6,602,242	6,190,824
Goodwill	64,370				64,369				64,370	64,369	64,369
Other intangibles, net	4,224				5,170				4,224	5,170	6,433
Net loans and leases	4,790,529				4,629,349				4,790,529	4,629,349	4,222,278
Deposits	4,900,464				4,848,654				4,900,464	4,848,654	4,633,527
Total equity	568,988				530,386				568,988	530,386	506,411
Operating Segments | Insurance
Segment Reporting Information [Line Items]
Interest income									3	2	2
Interest expense									0	0	0
Net Interest Income									3	2	2
Provision for loan and lease losses									0	0	0
Noninterest income									29,760	29,106	29,741
Noninterest expense									25,427	24,503	24,564
Income Before Income Tax Expense									4,336	4,605	5,179
Income Tax Expense									1,092	1,705	1,906
Net Income Attributable to Noncontrolling Interests and Tompkins Financial Corporation									3,244	2,900	3,273
Less: Net income attributable to noncontrolling interests									0	0	0
Net Income Attributable to Tompkins Financial Corporation									3,244	2,900	3,273
Depreciation and amortization									230	285	353
Assets	42,088				39,599				42,088	39,599	38,988
Goodwill	19,702				19,711				19,702	19,711	20,043
Other intangibles, net	3,192				3,812				3,192	3,812	4,560
Net loans and leases	0				0				0	0	0
Deposits	0				0				0	0	0
Total equity	32,996				31,083				32,996	31,083	30,825
Operating Segments | Wealth Management
Segment Reporting Information [Line Items]
Interest income									0	0	0
Interest expense									0	0	0
Net Interest Income									0	0	0
Provision for loan and lease losses									0	0	0
Noninterest income									17,997	16,345	15,842
Noninterest expense									12,616	12,597	12,216
Income Before Income Tax Expense									5,381	3,748	3,626
Income Tax Expense									1,227	1,184	1,211
Net Income Attributable to Noncontrolling Interests and Tompkins Financial Corporation									4,154	2,564	2,415
Less: Net income attributable to noncontrolling interests									0	0	0
Net Income Attributable to Tompkins Financial Corporation									4,154	2,564	2,415
Depreciation and amortization									130	57	75
Assets	21,365				17,779				21,365	17,779	15,403
Goodwill	8,211				8,211				8,211	8,211	8,211
Other intangibles, net	212				281				212	281	356
Net loans and leases	0				0				0	0	0
Deposits	0				0				0	0	0
Total equity	18,887				14,733				18,887	14,733	12,169
Intercompany
Segment Reporting Information [Line Items]
Interest income									(3)	(2)	(2)
Interest expense									(3)	(2)	(2)
Net Interest Income									0	0	0
Provision for loan and lease losses									0	0	0
Noninterest income									(2,046)	(1,745)	(1,177)
Noninterest expense									(2,046)	(1,745)	(1,177)
Income Before Income Tax Expense									0	0	0
Income Tax Expense									0	0	0
Net Income Attributable to Noncontrolling Interests and Tompkins Financial Corporation									0	0	0
Less: Net income attributable to noncontrolling interests									0	0	0
Net Income Attributable to Tompkins Financial Corporation									0	0	0
Depreciation and amortization									0	0	0
Assets	(12,642)				(11,330)				(12,642)	(11,330)	(8,459)
Goodwill	0				0				0	0	0
Other intangibles, net	0				0				0	0	0
Net loans and leases	0				0				0	0	0
Deposits	(11,505)				(10,847)				(11,505)	(10,847)	(8,388)
Total equity	$ 0				$ 0				$ 0	$ 0	$ 0

Segment and Related Informati_5

Segment and Related Information - Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting [Abstract]
Interest and dividend income	$ 65,325	$ 63,984	$ 62,143	$ 60,140	$ 59,029	$ 57,772	$ 56,342	$ 53,621	$ 251,592	$ 226,764	$ 202,739
Interest expense	12,089	10,821	9,429	7,453	7,060	6,772	6,041	5,587	39,792	25,460	22,103
Net Interest Income	53,236	53,163	52,714	52,687	51,969	51,000	50,301	48,034	211,800	201,304	180,636
Provision for loan and lease losses	2,058	272	1,045	567	2,014	402	976	769	3,942	4,161	4,321
Income before income tax expense	23,808	26,361	27,842	26,229	20,981	25,917	25,207	23,137	104,240	95,242	86,516
Net Income	$ 18,911	$ 20,902	$ 22,059	$ 20,436	$ 2,457	$ 17,394	$ 16,926	$ 15,717	$ 82,308	$ 52,494	$ 59,340
Net income per common share (basic) (in dollars per share)	$ 1.24	$ 1.37	$ 1.44	$ 1.34	$ 0.16	$ 1.14	$ 1.11	$ 1.04	$ 5.39	$ 3.46	$ 3.94
Net income per common share (diluted) (in dollars per share)	$ 1.23	$ 1.36	$ 1.43	$ 1.33	$ 0.16	$ 1.14	$ 1.11	$ 1.03	$ 5.35	$ 3.43	$ 3.91

Uncategorized Items - tmp-20181

Label	Element	Value
Accounting Standards Update 2016-01 [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (65,000)
Accounting Standards Update 2014-09 [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 1,780,000