Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Goodwill impairment	$ 1,376,736	$ 0
Net (loss) earnings	(1,195,424)	120,128
Depreciation and amortization	13,939	13,577
Amortization of net premiums on investment securities	9,526	15,606
Amortization of intangible assets	2,411	3,649
Amortization of operating lease ROU assets	6,655	7,443
Provision for credit losses	3,000	0
Gain on sale of foreclosed assets	(196)	(3,177)
Provision for losses on foreclosed assets	527	0
Gain on sale of loans and leases	(2,962)	(60)
Gain on sale of premises and equipment	(7)	(2)
Gain on sale of securities	0	(104)
Gain on BOLI death benefit	(350)	0
Unrealized gain on derivatives, foreign currencies, and credit-linked notes, net	(1,781)	(1,176)
Earned stock compensation	4,983	7,557
(Increase) decrease in other assets	(129,223)	29,162
Decrease in accrued interest payable and other liabilities	(108,825)	(58,397)
Net cash (used in) provided by operating activities	(20,991)	134,206
Cash flows from investing activities:
Net increase in loans and leases	(93,256)	(1,448,692)
Proceeds from sales of loans and leases	290,228	36,758
Proceeds from maturities and paydowns of securities available-for-sale	56,956	243,921
Proceeds from sales of securities available-for-sale	0	206,192
Purchases of securities available-for-sale	(550)	(356,196)
Proceeds from maturities and paydowns of securities held-to-maturity	288	0
Net purchases of Federal Home Loan Bank stock	(112,860)	0
Proceeds from sales of foreclosed assets	5,124	16,020
Purchases of premises and equipment, net	(9,236)	(7,287)
Proceeds from sales of premises and equipment	13	3
Proceeds from BOLI death benefit	1,844	0
Net (increase) decrease in equipment leased to others under operating leases	(5,097)	4,661
Net cash provided by (used in) investing activities	133,454	(1,304,620)
Cash flows from financing activities:
Net decrease in noninterest-bearing deposits	(4,181,598)	(486,082)
Net decrease in interest-bearing deposits	(1,567,175)	(1,286,780)
Proceeds from (Repayments of) Debt	10,119,680	991,000
Restricted stock surrendered	(4,053)	(4,481)
Preferred stock dividends paid	(9,947)	0
Common stock dividends paid	(29,456)	(29,796)
Net cash provided by (used in) financing activities	4,327,451	(816,139)
Net increase (decrease) in cash, cash equivalents, and restricted cash	4,439,914	(1,986,553)
Cash, cash equivalents, and restricted cash, beginning of period	2,240,222	4,057,234
Cash, cash equivalents, and restricted cash, end of period	6,680,136	2,070,681
Supplemental disclosures of cash flow information:
Cash paid for interest	209,340	10,635
Cash paid for income taxes	786	2,138
Loans transferred to foreclosed assets	2,568	304
Transfer of Portfolio Loans and Leases to Held-for-sale	2,796,365	$ 0
Liabilities	$ 41,531,504