Income Taxes - The Components of the Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Postretirement benefits	$ 10,588	$ 8,331
Allowance for credit losses	13,013	15,221
Operating lease liabilities	18,977	19,922
Stock based compensation	3,501	3,119
Depreciation	2,765	2,421
Unrealized loss on securities available for sale	2,917
Fair value adjustment on financial assets carried at fair value	16	23
Fair value hedges	394	2,988
Adjustment required to recognize funded status of postretirement pension plans	596	837
Cashflow hedges	653	7,780
Deferred loan income	2,200	2,192
Fair Value of Loans from Empire acquisition	2,820	3,798
Net operating loss (NYS)		29
Net operating loss (NYC)	684	1,896
Other	4,269	3,740
Deferred tax assets	63,393	72,297
Deferred tax liabilities:
FPFC deferred income		2,188
Right of Use Asset	17,570	17,080
Fair value adjustment on financial liabilities carried at fair value	754	4,968
Entity specific fair value	1,058	821
Unrealized losses on securities		573
Deferred loan cost	6,999	7,044
State and local taxes	3,016	3,768
Other	2,130	1,599
Deferred tax liabilities	31,527	38,041
Net deferred tax asset included in other assets	$ 31,866	$ 34,256