CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating activities:
Net income	$ 19,935	$ 122,844	$ 166,299
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	26,286	22,006	11,906
Provision/ (credit) for credit losses - loans	14,192	(17,561)	34,372
Share based compensation expense	9,044	7,631	7,887
Goodwill impairment loss	54,391	0	0
Gain on disposal of assets	0	0	(16,516)
Deferred income tax / (benefit)	(427)	5,891	(9,491)
(Gains)/ losses on sale of other real estate owned	0	(66)	86
Investment securities (gains)/ losses	0	0	345
Tax benefit associated with share based compensation	470	295	(646)
Net (increase)/ decrease in accrued interest receivable	956	(5,411)	(6,823)
Net increase in other assets	(9,321)	(6,490)	(4,776)
Net increase/ (decrease) accrued expenses and other liabilities	(18,666)	6,176	9,686
Other, net	(513)	1,630	(3,710)
Net cash provided by operating activities	83,711	137,815	216,322
Investing activities:
Sales/ (purchases) of other investments	13,893
Sales/ (purchases) of other investments		(6,388)	(28,052)
Purchases of investments available-for-sale	(259,424)	(17,687)	(469,792)
Proceeds from sales of investment available-for-sale	0	0	18,087
Proceeds from maturities, calls and principal payments of investments available-for-sale	224,378	160,637	240,217
Proceeds from maturities, calls and principal payments of investments held-to-maturity	21,627	24,675	31,759
Net (increase)/ decrease in loans	(174,634)	30,971	(1,420,983)
Proceeds from the sales of other real estate owned	0	712	335
Proceeds from sale of business activity, net	0	0	23,822
Expenditures for premises and equipment	(16,154)	(13,982)	(14,589)
Net cash provided by/ (used in) investing activities	(190,314)	178,938	(1,619,196)
Financing activities:
Net increase in deposits	749,581	44,411	330,721
Net increase/ (decrease) in retail repurchase agreements, federal funds purchased and Federal Reserve Bank borrowings	(306,121)	53,065	180,881
Proceeds from FHLB advances	0	2,030,000	2,526,625
Repayment of FHLB advances	(300,000)	(2,030,000)	(1,976,625)
Proceeds from issuance of subordinated debt	0	0	200,000
Proceeds from issuance of common stock	1,359	2,417	2,192
Stock tendered for payment of withholding taxes	(3,513)	(1,821)	(2,353)
Repurchase of common stock	0	0	(24,987)
Dividends paid	(61,638)	(61,159)	(61,368)
Net cash provided by financing activities	79,668	36,913	1,175,086
Net increase/ (decrease) in cash and cash equivalents	(26,935)	353,666	(227,788)
Cash and cash equivalents at beginning of year	545,898	192,232	420,020
Cash and cash equivalents at end of year	518,963	545,898	192,232
Supplemental Disclosures:
Interest payments	358,943	263,473	62,240
Income tax payments, net of refunds of $2, $0 and $966 in 2024, 2023 and 2022	24,926	35,945	62,098
Transfers from loans to other real estate owned	3,265	0	0
Residential mortgage loans held for sale
Adjustments to reconcile net income to net cash provided by operating activities
Origination of mortgage loans held for sale	(371,882)	(367,910)	(363,204)
Proceeds from sales of mortgage loans held for sale	365,366	374,468	398,688
Gains on sales of mortgage loans held for sale	(5,405)	(5,688)	(7,781)
SBA loans held for sale
Adjustments to reconcile net income to net cash provided by operating activities
Origination of mortgage loans held for sale	(1,829)	0	0
Proceeds from sales of mortgage loans held for sale	1,211	0	0
Gains on sales of mortgage loans held for sale	$ (97)	$ 0	$ 0