Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest and dividend income
Interest and fees on loans	$ 248,153	$ 251,744	$ 232,719
Interest and dividends on securities:
Interest	15,776	25,535	23,022
Dividends	43	73	67
Other interest income	355	1,604	1,190
Total interest and dividend income	264,327	278,956	256,998
Interest expense
Deposits	42,312	88,057	64,497
Other interest expense	26,816	28,959	25,095
Total interest expense	69,128	117,016	89,592
Net interest income	195,199	161,940	167,406
Provision for credit losses	23,129	2,811	575
Net interest income after provision for credit losses	172,070	159,129	166,831
Non-interest income
Banking services fee income	4,500	3,723	4,030
Net gain on sale of loans	48	870	168
Net loss on sale of securities	(701)	(15)	(1,920)
Net gain on sale of assets	0	770	1,141
Net loss from fair value adjustments	(2,142)	(5,353)	(4,122)
Federal Home Loan Bank of New York stock dividends	3,453	3,589	3,576
Life insurance proceeds	659	462	2,998
Bank owned life insurance	3,814	3,534	3,099
Other income	1,412	1,891	1,367
Total non-interest income	11,043	9,471	10,337
Non-interest expense
Salaries and employee benefits	74,228	67,765	64,560
Occupancy and equipment	12,134	11,328	10,079
Professional services	9,374	8,358	8,360
FDIC deposit insurance	2,676	869	2,115
Data processing	8,586	5,878	5,663
Depreciation and amortization of bank premises and equipment	6,212	5,930	5,792
Other real estate owned / foreclosure expense (benefit)	216	204	(94)
Net loss (gain) from sales of real estate owned	36		(27)
Prepayment penalty on borrowings	7,834
Other operating expenses	16,635	14,937	15,235
Total non-interest expense	137,931	115,269	111,683
Income before income taxes	45,182	53,331	65,485
Provision for income taxes
Federal	9,188	10,439	8,574
State and local	1,320	1,613	1,821
Total provision for income taxes	10,508	12,052	10,395
Net income	$ 34,674	$ 41,279	$ 55,090
Basic earnings per common share (in dollars per share)	$ 1.18	$ 1.44	$ 1.92
Diluted earnings per common share (in dollars per share)	$ 1.18	$ 1.44	$ 1.92