Segment and Related Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Interest income	$ 46,228	$ 45,365
Interest expense	5,000	5,338
Net interest income	41,228	40,027
Provision for loan and lease losses	209	743
Noninterest income	17,646	17,434
Noninterest expense	39,692	38,210
Income before income tax expense	18,973	18,508
Income tax expense	6,260	5,906
Net Income attributable to noncontrolling interests and Tompkins Financial Corporation	12,713	12,602
Less: Net income attributable to noncontrolling interests	33	33
Net Income attributable to Tompkins Financial Corporation	12,680	12,569
Depreciation and amortization	1,568	1,384
Assets	5,357,533	5,041,800	5,269,561
Goodwill	92,243	92,246	92,243
Other intangibles, net	14,110	16,004	14,649
Net loans and leases	3,398,072	3,176,198	3,364,291
Deposits	4,282,766	4,105,170	4,169,154
Total Equity	504,296	473,822	489,583	457,939
Banking [Member]
Interest income	46,192	45,333
Interest expense	5,000	5,340
Net interest income	41,192	39,993
Provision for loan and lease losses	209	743
Noninterest income	6,390	6,314
Noninterest expense	30,950	29,846
Income before income tax expense	16,423	15,718
Income tax expense	5,312	4,850
Net Income attributable to noncontrolling interests and Tompkins Financial Corporation	11,111	10,868
Less: Net income attributable to noncontrolling interests	33	33
Net Income attributable to Tompkins Financial Corporation	11,078	10,835
Depreciation and amortization	1,444	1,295
Assets	5,315,921	5,001,219
Goodwill	64,500	64,500
Other intangibles, net	8,929	10,341
Net loans and leases	3,398,072	3,176,198
Deposits	4,289,693	4,112,666
Total Equity	468,128	435,130
Insurance [Member]
Interest income	1	2
Net interest income	1	2
Provision for loan and lease losses		0
Noninterest income	7,406	7,247
Noninterest expense	6,015	5,728
Income before income tax expense	1,392	1,521
Income tax expense	554	625
Net Income attributable to noncontrolling interests and Tompkins Financial Corporation	838	896
Net Income attributable to Tompkins Financial Corporation	838	896
Depreciation and amortization	92	50
Assets	36,283	34,543
Goodwill	19,662	19,665
Other intangibles, net	4,680	5,080
Total Equity	26,763	26,779
Wealth Management [Member]
Interest income	35	32
Net interest income	35	32
Noninterest income	4,127	4,229
Noninterest expense	3,004	2,992
Income before income tax expense	1,158	1,269
Income tax expense	394	431
Net Income attributable to noncontrolling interests and Tompkins Financial Corporation	764	838
Net Income attributable to Tompkins Financial Corporation	764	838
Depreciation and amortization	32	37
Assets	12,402	13,712
Goodwill	8,081	8,081
Other intangibles, net	501	583
Total Equity	9,405	11,913
Intercompany and Merger [Member]
Interest income		(2)
Interest expense		(2)
Noninterest income	(277)	(356)
Noninterest expense	(277)	(356)
Assets	(7,073)	(7,674)
Deposits	$ (6,927)	$ (7,496)