Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Statement of Cash Flows [Abstract]
Net income	$ 29,447	$ 46,980
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	1,082	3,255
ESOP and stock compensation expense	2,802	2,572
Depreciation	2,765	2,755
Amortization of premiums and deferred loan costs, net of accretion of discounts and deferred loan fees	5,483	7,298
Amortization of debt issuance costs	167	56
Amortization of intangible assets	93	130
Amortization of operating lease right-of-use assets	3,526	3,468
Income on bank-owned life insurance	(2,679)	(2,548)
Net gain on sale of loans	(134)	(273)
Proceeds from sale of loans held-for-sale	1,583	0
Origination of loans held-for-sale	(1,449)	(504)
Losses (gains) on available-for-sale debt securities, net	17	(264)
(Gains) losses on trading securities, net	(723)	2,791
Loss (gain) on sale of other real estate owned, net	7	(17)
Net (purchases) sales of trading securities	(30)	596
Decrease (increase) in accrued interest receivable	71	(1,503)
Increase in other assets	(12,157)	(7,949)
Decrease in accrued expenses and other liabilities	2,813	1,518
Net cash provided by operating activities	32,684	58,361
Cash flows from investing activities:
Net decrease (increase) in loans receivable	10,190	(434,992)
Purchases of loans	(3,781)	(7,696)
Proceeds from sale of loans held-for-sale	0	2,796
Purchases of FHLB of New York stock	(44,998)	(25,043)
Redemptions of FHLB of New York stock	34,215	24,962
Purchases of debt securities available-for-sale	(765)	(168,988)
Purchases of equity securities	(185)	(3,229)
Principal payments and maturities on debt securities available-for-sale	205,310	249,213
Principal payments and maturities on debt securities held-to-maturity	630	674
Proceeds from sale of debt securities available-for-sale	0	41,464
Proceeds from bank-owned life insurance	0	1,526
Proceeds from sale of other real estate owned	63	125
Purchases and improvements of premises and equipment	(2,075)	(2,200)
Net cash provided by (used in) investing activities	198,604	(321,388)
Cash flows from financing activities:
Net (decrease) increase in deposits	(481,706)	234,825
Dividends paid	(17,265)	(18,207)
Exercise of stock options	100	244
Purchase of treasury stock	(32,747)	(22,273)
(Decrease) increase in advance payments by borrowers for taxes and insurance	(27)	1,228
Proceeds from issuance of subordinated debt, net of issuance costs	0	60,884
Proceeds from FHLB advances and other borrowings and securities sold under agreements to repurchase	743,553	105,923
Repayments related to securities sold under agreements to repurchase and other borrowings	(408,439)	(120,000)
Net cash (used in) provided by financing activities	(196,531)	242,624
Net increase (decrease) in cash and cash equivalents	34,757	(20,403)
Cash and cash equivalents at beginning of period	45,799	91,068
Cash and cash equivalents at end of period	80,556	70,665
Cash paid during the period for:
Interest	56,109	11,578
Income taxes	13,336	19,399
Non-cash transactions:
Loan charge-offs, net	5,219	345
Transfer of loans held-for-investment to other real estate owned	70	0
Right-of-use assets obtained in exchange for new lease liabilities	645	4,983
Transfer of loans held-for-investment to loans held-for-sale at fair value	$ 950	$ 2,523