Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net earnings	$ 81,953	$ 61,185
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	25,369	27,687
Amortization of net premiums on investment securities	10,034	12,496
Accretion of net purchased loan discounts and deferred loan fees	(42,852)	(63,017)
Amortization of intangible assets	14,319	16,888
Amortization of operating lease ROU assets	11,750	17,842
Provision for credit losses	48,400	21,000
Gain on sale of foreclosed assets	(115)	(568)
Provision for losses on foreclosed assets	633	813
Gain on sale of loans and leases	(241)	(687)
Gain on sale of premises and equipment	0	81
Gain on BOLI death benefit	0	(52)
Unrealized loss on derivatives, foreign currencies, and credit-linked notes, net	271	3,169
LOCOM HFS adjustment	9	(292)
Earned stock compensation	11,932	8,568
Decrease in other assets	28,605	82,733
Decrease in accrued interest payable and other liabilities	(112,231)	(237,139)
Net cash provided by (used in) operating activities	77,836	(49,293)
Cash flows from investing activities:
Net increase in loans and leases	(949,050)	(101,402)
Proceeds from sales of loans and leases	32,421	530,292
Proceeds from maturities and paydowns of securities available-for-sale	209,739	84,629
Purchases of securities available-for-sale	(166,865)	(5,558)
Proceeds from maturities and paydowns of securities held-to-maturity	614	586
Purchases of FHLB and FRB stock	(16,256)	(7,816)
Redemptions of FHLB and FRB stock	1,786	1,782
Proceeds from sales of foreclosed assets	7,068	8,622
Purchases of premises and equipment	(2,794)	(6,639)
Proceeds from sales of premises and equipment	0	2
Proceeds from BOLI death benefit	0	1,519
Net decrease (increase) in equipment leased to others under operating leases	5,055	(6,674)
Net cash (used in) provided by investing activities	(878,282)	499,343
Cash flows from financing activities:
Net (decrease) increase in noninterest-bearing deposits	(278,797)	50,753
Net increase (decrease) in interest-bearing deposits	615,321	(1,648,072)
Repayments of borrowings	(176,184)	(2,075,372)
Proceeds from borrowings	700,000	600,000
Common shares repurchased under Stock Repurchase Program	(151,845)	0
Common shares purchased under Dividend Reinvestment Plan	144	148
Restricted stock surrendered	(3,387)	(2,392)
Preferred stock dividends paid	(19,894)	(19,894)
Common stock dividends paid	(33,572)	(33,987)
Net cash provided by (used in) by financing activities	651,786	(3,128,816)
Net decrease in cash, cash equivalents, and restricted cash	(148,660)	(2,678,766)
Cash, cash equivalents, and restricted cash, beginning of period	2,502,212	5,377,576
Cash, cash equivalents, and restricted cash, end of period	2,353,552	2,698,810
Supplemental disclosures of cash flow information:
Cash paid for interest	373,260	607,769
Cash received for income taxes	(8,164)	(7,175)
Loans transferred to foreclosed assets	5,673	14,776
Transfers from loans held for investment to loans held for sale	441,248	1,915,180
Transfers to loans held for investment from loans held for sale	$ 0	$ 1,179