CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
OPERATING ACTIVITIES
Net income attributable to Tompkins Financial Corporation	$ 85,030	$ 89,264	$ 77,588
Adjustments to reconcile net income to net cash provided by operating activities:
Provision (credit) for credit loss expense	2,789	(2,219)	17,213
Depreciation and amortization of premises, equipment, and software	10,684	10,250	10,192
Amortization of intangible assets	873	1,317	1,484
Earnings from corporate owned life insurance	(1,162)	(1,879)	(2,188)
Net amortization on securities	5,595	11,758	10,737
Amortization/accretion related to purchase accounting	(921)	(912)	(1,066)
Deferred income tax expense (benefit)	910	1,798	(6,284)
Net loss (gain) on securities transactions	634	(249)	(443)
Penalties on prepayment of FHLB borrowings	0	2,929	0
Net gain on sale of loans originated for sale	(155)	(943)	(2,054)
Proceeds from sale of loans originated for sale	9,018	32,460	53,726
Loans originated for sale	(8,658)	(27,354)	(55,232)
Loss on redemption of trust preferred debentures	0	1,845	139
Net gain on sale of bank premises and equipment	(105)	(21)	(3)
Net excess tax benefit from stock based compensation	365	609	118
Stock-based compensation expense	4,343	5,145	4,733
Decrease in accrued interest receivable	(2,268)	9,428	(12,732)
Decrease in accrued interest payable	519	(826)	(759)
Other, net	(4,151)	(11,223)	6,218
Net Cash Provided by Operating Activities	103,340	121,177	101,387
INVESTING ACTIVITIES
Proceeds from maturities, calls and principal paydowns of available-for-sale debt securities	208,655	453,735	545,617
Proceeds from sales of available-for-sale debt securities	160,638	142,679	42,333
Purchases of available-for-sale debt securities	(154,820)	(1,071,810)	(904,913)
Purchases of held-to-maturity securities	(28,320)	(283,992)	0
Proceeds from sale of VISA Class B shares	11,407	0	0
Net (increase) decrease in loans	(193,010)	175,162	(340,475)
Proceeds from sale/redemptions of Federal Home Loan Bank stock	81,402	9,182	42,706
Purchases of Federal Home Loan Bank and other stock	(88,126)	(3,796)	(25,393)
Proceeds from sale of bank premises and equipment	223	95	22
Purchases of bank premises, equipment and software	(8,168)	(4,741)	(4,551)
Redemption of corporate owned life insurance	2,106	169	446
Other, net	(431)	23	489
Net Cash Used in Investing Activities	(8,444)	(583,294)	(643,719)
FINANCING ACTIVITIES
Net (decrease) increase in demand, money market, and savings deposits	(180,877)	460,243	1,153,611
Net (decrease) increase in time deposits	(7,740)	(106,063)	71,809
Net (decrease) increase in Federal funds purchased and securities sold under agreements to repurchase	(10,509)	942	5,499
Increase in other borrowings	435,900	14,000	74,583
Repayment of other borrowings	(268,600)	(157,929)	(467,683)
Redemption of trust preferred debentures	0	(15,150)	(4,124)
Cash dividends	(33,565)	(32,415)	(31,359)
Repurchase of common stock	(15,430)	(23,773)	(9,414)
Shares issued for dividend reinvestment plan	0	2	1,825
Shares issued for employee stock ownership plan	2,951	0	0
Net shares issued related to restricted stock awards	(1,758)	(2,292)	(1,682)
Net proceeds from exercise of stock options	(538)	(803)	(253)
Net Cash (Used) Provided by Financing Activities	(80,166)	136,762	792,812
Net Increase (Decrease) in Cash and Cash Equivalents	14,730	(325,355)	250,480
Cash and cash equivalents at beginning of period	63,107	388,462	137,982
Total Cash and Cash Equivalents at End of Period	77,837	63,107	388,462
Supplemental Cash Flow Information
Cash paid during the year for - Interest	21,047	16,920	30,340
Cash paid during the year for - Taxes	23,898	28,630	22,893
Transfer of loans to other real estate owned	351	46	192
Right-of-use assets obtained in exchange for new lease liabilities	$ 2,498	$ 2,280	$ 1,256