CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net income	$ 104,065	$ 147,357	$ 110,076
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of premises and equipment	12,327	11,683	9,357
Allocation of ESOP stock	2,070	2,506	2,197
Stock compensation	5,854	6,638	5,415
Net excess tax expense on stock compensation	243	216	93
Amortization of core deposit intangible	3,984	4,718	5,453
Net accretion of purchase accounting adjustments	(5,848)	(9,752)	(14,484)
Amortization of servicing asset	90	77	72
Net premium amortization in excess of discount accretion on securities	3,133	7,164	8,466
Net amortization of deferred costs on borrowings	598	548	824
Net amortization of deferred fees/costs and premiums/discounts on loans	(1,094)	1,129	1,242
Provision for credit losses (benefit)	17,678	7,768	(11,832)
Deferred tax provision	3,151	1,777	3,608
Net gain on sale of other real estate owned	0	(54)	0
Net write-down of fixed assets held-for-sale to net realizable value	459	1,482	7,787
Net gain on sale of fixed assets	(26)	(38)	0
Net loss (gain) on equity investments	3,732	(9,685)	(7,145)
Net gain on sales of loans	(428)	(358)	(3,186)
Net loss on sale of available-for-sale securities	697	0	0
Proceeds from sales of residential loans held for sale	58,495	12,616	102,648
Residential loans originated for sale	(62,543)	(13,158)	(53,938)
Increase in value of bank owned life insurance	(5,280)	(6,578)	(6,832)
Net loss (gain) on sale of assets held for sale	233	(1,959)	(318)
(Increase) decrease in interest and dividends receivable	(7,170)	(12,098)	2,663
Decrease (increase) in other assets	34,504	(80,233)	33,093
(Decrease) increase in other liabilities	(44,663)	178,684	(35,287)
Total adjustments	20,196	103,093	49,896
Net cash provided by operating activities	124,261	250,450	159,972
Cash flows from investing activities:
Net increase in loans receivable	(243,545)	(1,126,997)	(556,449)
Purchases of loan pools	(35,904)	(171,623)	(301,954)
Premiums paid on purchased loan pools	(1,210)	(866)	(8,874)
Proceeds from sale of loans		13,388	825
Purchase of debt securities available-for-sale	(302,909)	(69,493)	(510,070)
Purchase of debt securities held-to-maturity	(65,567)	(249,751)	(447,447)
Purchase of equity investments	(7,661)	(9,366)	(86,462)
Proceeds from maturities and calls of debt securities available-for-sale	22,376	104,449	103,720
Proceeds from maturities and calls of debt securities held-to-maturity	19,425	30,241	38,042
Proceeds from sales of debt securities available-for-sale	1,300	30,257	3,000
Proceeds from sales of equity investments	4,822	19,234	98,777
Principal repayments on debt securities available-for-sale	926	0	0
Principal repayments on debt securities held-to-maturity	108,037	135,417	215,734
Proceeds from bank owned life insurance	385	4,182	12,878
Proceeds from the redemption of restricted equity investments	128,964	234,627	2,200
Purchases of restricted equity investments	(113,447)	(290,710)	(3,267)
Proceeds from sales of other real estate owned	0	160	0
Proceeds from sales of assets held-for-sale	3,719	8,130	3,544
Purchases of premises and equipment	(7,708)	(16,107)	(42,039)
Purchases of operating lease equipment	0	(4,789)	0
Net cash consideration received for acquisition	0	38,609	0
Net cash used in investing activities	(487,997)	(1,321,008)	(1,477,842)
Cash flows from financing activities:
Net increase (decrease) in deposits	760,023	(56,963)	407,569
Net payment for sale of branches	0	0	(86,282)
Increase (decrease) in short-term borrowings	3,950	(49,672)	(9,685)
Net (repayment) proceeds from FHLB advances	(362,530)
Net (repayment) proceeds from FHLB advances		1,211,166	0
Repayments of other borrowings	0	(35,104)	(7,612)
Increase in advances by borrowers for taxes and insurance	1,002	1,100	3,009
Exercise of stock options	702	424	1,946
Payment of employee taxes withheld from stock awards	(2,350)	(1,502)	(1,183)
Purchase of treasury stock	0	(7,396)	(36,059)
Acquisition of common stock by ESOP	0	0	(3,200)
Dividends paid	(51,274)	(47,511)	(44,510)
Distributions to non-controlling interest	(55)	(782)	0
Net cash provided by financing activities	349,468	1,013,760	223,993
Net decrease in cash and due from banks and restricted cash	(14,268)	(56,798)	(1,093,877)
Cash and due from banks and restricted cash at beginning of year	167,986	224,784	1,318,661
Supplemental disclosure of cash flow information:
Cash and due from banks at beginning of year	167,946	204,949	1,272,134
Restricted cash at beginning of year	40	19,835	46,527
Cash and due from banks at end of year	153,718	167,946	204,949
Restricted cash at end of year	0	40	19,835
Cash and due from banks and restricted cash at end of year	153,718	167,986	224,784
Cash paid during the year for:
Interest	225,405	49,700	37,381
Income taxes	29,331	25,383	50,524
Non-cash activities:
Accretion of unrealized loss on securities reclassified to held-to-maturity	503	590	667
Net loan charge-offs (recoveries)	8,382	(340)	(442)
Transfer of premises and equipment to assets held-for-sale	1,302	2,776	4,035
Transfer of debt securities from available-for-sale to held-to-maturity	0	0	12,721
Transfer of loans receivable to loans held-for-sale	0	13,178	0
Non-cash assets acquired:
Other current assets	0	238	0
Premises and equipment	0	18	0
Right of use ("ROU") asset	0	779	0
Other assets	0	81	0
Total non-cash assets acquired	0	1,116	0
Liabilities assumed:
Lease liability	0	779	0
Other liabilities	0	43,937	0
Total liabilities assumed	$ 0	$ 44,716	$ 0