CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
INTEREST AND DIVIDEND INCOME
Loans	$ 191,410	$ 169,630	$ 154,636
Due from banks	37	6	4
Trading securities	0	220	352
Available-for-sale securities	29,721	27,846	29,525
Held-to-maturity securities	3,475	3,603	3,100
Federal Home Loan Bank stock and Federal Reserve Bank stock	2,121	1,434	1,129
Total Interest and Dividend Income	226,764	202,739	188,746
INTEREST EXPENSE
Time certificates of deposits of $250,000 or more	1,880	1,654	1,367
Other deposits	10,253	9,059	9,084
Federal funds purchased and securities sold under agreements to repurchase	235	2,228	2,709
Trust preferred debentures	1,158	2,390	2,308
Other borrowings	11,934	6,772	4,897
Total Interest Expense	25,460	22,103	20,365
Net interest income	201,304	180,636	168,381
Provisions charged to operations	4,161	4,321	2,945
Net Interest Income After Provision for Loan and Lease Losses	197,143	176,315	165,436
NONINTEREST INCOME
Insurance commissions and fees	28,778	29,492	29,286
Investment services income	15,665	15,203	15,416
Service charges on deposit accounts	8,437	8,793	9,325
Card services income	9,100	8,058	7,837
Mark-to-market loss on trading securities	0	(182)	(295)
Mark-to-market gain on liabilities held at fair value	0	227	385
Other income	7,631	6,291	8,878
Net (loss) gain on securities transactions	(407)	926	1,108
Total Noninterest Income	69,204	68,808	71,940
NONINTEREST EXPENSES
Salaries and wages	81,590	76,950	72,707
Pension and other employee benefits	21,870	20,496	16,025
Net occupancy expense of premises	13,214	12,521	12,312
Furniture and fixture expense	7,028	6,450	6,146
FDIC insurance	2,527	3,024	2,992
Amortization of intangible assets	1,932	2,090	2,013
Other operating expenses	42,944	37,076	37,667
Total Noninterest Expenses	171,105	158,607	149,862
Income Before Income Tax Expense	95,242	86,516	87,514
Income tax expense	42,620	27,045	28,962
Net Income attributable to noncontrolling interests and Tompkins Financial Corporation	52,622	59,471	58,552
Less: Net income attributable to noncontrolling interests	128	131	131
Net Income attributable to Tompkins Financial Corporation	$ 52,494	$ 59,340	$ 58,421
Basic Earnings Per Share (in dollars per share)	$ 3.46	$ 3.94	$ 3.91
Diluted Earnings Per Share (in dollars per share)	$ 3.43	$ 3.91	$ 3.87