CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - UNAUDITED - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Operating activities:
Net income	$ 75,998	$ 98,735
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	10,948	6,007
Provision/ (credit) for credit losses	(16,481)	4,681
Share based compensation expense	3,972	4,650
Gain on disposal of assets	0	(16,699)
Deferred income tax expense	7,806	972
Originations of loans held for sale	(194,320)	(200,986)
Proceeds from sales of loans held for sale	186,995	221,492
Gains on sales of loans held for sale	(2,445)	(4,707)
Losses on sale of other real estate owned	0	24
Investment securities gains	0	(46)
Tax (benefit)/ deficiency associated with share based compensation	305	(592)
Net (increase)/ decrease in accrued interest receivable	(1,216)	890
Net increase in other assets	(10,424)	(989)
Net decrease in accrued expenses and other liabilities	(6,656)	(9,425)
Other, net	(191)	(2,487)
Net cash provided by operating activities	54,291	101,520
Investing activities:
Purchases of other investments	(2,833)	(11,098)
Purchases of investments available-for-sale	0	(356,033)
Proceeds from sales of investment available-for-sale	0	1,261
Proceeds from maturities, calls and principal payments of investments available-for-sale	76,412	138,473
Proceeds from maturities, calls and principal payments of investments held-to-maturity	12,337	15,961
Net (increase)/ decrease in loans	27,075	(814,098)
Proceeds from the sales of other real estate owned	35	271
Proceeds from sale of business activity, net	0	23,936
Expenditures for premises and equipment	(7,334)	(7,612)
Net cash provided by/ (used in) investing activities	105,692	(1,008,939)
Financing activities:
Net increase in deposits	6,243	345,832
Net increase in retail repurchase agreements, federal funds purchased and Federal Reserve Bank borrowings	52,543	44,658
Proceeds from FHLB advances	2,030,000	346,625
Repayment of FHLB advances	(1,980,000)	(171,625)
Proceeds from issuance of subordinated debt	0	200,000
Proceeds from issuance of common stock	1,521	1,339
Stock tendered for payment of withholding taxes	(1,821)	(2,278)
Repurchase of common stock	0	(24,987)
Cash dividends paid	(30,574)	(30,886)
Net cash provided by financing activities	77,912	708,678
Net increase/ (decrease) in cash and cash equivalents	237,895	(198,741)
Cash and cash equivalents at beginning of period	192,232	420,020
Cash and cash equivalents at end of period	430,127	221,279
Supplemental disclosures:
Interest payments	120,491	13,859
Income tax payments, net of refunds of $0 and $966 in 2023 and 2022, respectively	$ 22,750	$ 25,059