Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 63,710	$ 31,213
Adjustments to reconcile net income to net cash provided by operating activities:
(Benefit) Provision for credit losses	(5,705)	19,267
Depreciation and amortization of bank premises and equipment	4,904	4,633
Amortization of premium, net of (accretion) of discount	(1,062)	4,721
Net (gain) loss from fair value adjustments	7,855	(1,987)
Net (gain) loss from fair value adjustments on qualifying hedges	(957)	2,208
Net gain from sale of loans	(289)	(42)
Net (gain) loss from sale of securities	(113)	91
Net gain from disposition of assets	(621)	0
Net loss from OREO	0	36
Income from bank owned life insurance	(3,021)	(2,798)
Life insurance proceeds	0	(659)
Amortization of core deposit intangibles	464	0
Stock-based compensation expense	5,516	5,510
Deferred compensation	(2,571)	(3,579)
Deferred income tax benefit	(762)	(4,174)
(Decrease) Increase in other liabilities	(8,524)	6,143
Decrease (Increase) in other assets	821	(15,043)
Net cash provided by operating activities	59,645	45,540
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of bank premises and equipment	(2,839)	(1,723)
Net redemptions (purchases) of Federal Home Loan Bank of New York shares	7,281	(198)
Proceeds from maturities and calls of securities held-to-maturity	0	180
Proceeds from prepayments of securities held-to-maturity	0	129
Purchases of securities available for sale	(508,402)	(130,397)
Proceeds from sales and calls of securities available for sale	58,613	143,376
Proceeds from maturities and prepayments of securities available for sale	294,004	142,320
Proceeds from bank owned life insurance	0	2,477
Net repayments (originations) of loans	232,391	(11,295)
Purchases of loans	(192,705)	(132,893)
Proceeds from sale of real estate owned	0	203
Proceeds from sale of loans	24,967	580
Net cash (used in) provided by investing activities	(86,690)	12,759
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in non-interest bearing deposits	162,587	172,882
Net increase (decrease) in interest-bearing deposits	168,174	(288,694)
Net increase in mortgagors' escrow deposits	21,585	12,761
Net proceeds from short-term borrowed funds	(25,000)	0
Proceeds from long-term borrowings	0	240,378
Repayment of long-term borrowings	(251,393)	(147,771)
Purchases of treasury stock	(7,778)	(3,872)
Cash dividends paid	(19,920)	(18,210)
Net cash provided by (used in) financing activities	48,255	(32,526)
Net increase in cash and cash equivalents	21,210	25,773
Cash and cash equivalents, beginning of period	157,388	49,787
Cash and cash equivalents, end of period	178,598	75,560
SUPPLEMENTAL CASH FLOW DISCLOSURE
Interest paid	30,727	57,334
Income taxes paid	21,419	13,594
Taxes paid if excess tax benefits on stock-based compensation were not tax deductible	$ 21,083	$ 13,404