Consolidated Statements of Earnings - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest income:
Loans and leases	$ 996,457	$ 993,138	$ 1,097,845
Investment securities	153,468	106,770	115,569
Deposits in financial institutions	8,804	3,583	6,479
Total interest income	1,158,729	1,103,491	1,219,893
Interest expense:
Deposits	27,808	59,663	148,460
Borrowings	623	8,161	26,961
Subordinated debt	26,474	21,109	29,843
Total interest expense	54,905	88,933	205,264
Net interest income	1,103,824	1,014,558	1,014,629
Provision for credit losses	(162,000)	339,000	22,000
Net interest income after provision for credit losses	1,265,824	675,558	992,629
Noninterest income:
Other commissions and fees	42,287	40,347	43,623
Leased equipment income	45,746	43,628	38,727
Service charges on deposit accounts	13,269	10,351	14,637
Gain on sale of loans and leases	1,733	2,139	1,114
Gain on sale of securities	1,615	13,171	25,445
Dividends and gains (losses) on equity investments	23,115	14,984	(567)
Warrant income	49,341	10,609	8,669
Other income	16,821	10,831	10,914
Total noninterest income	193,927	146,060	142,562
Noninterest expense:
Compensation	368,450	271,494	285,862
Occupancy	58,422	57,555	57,407
Leased equipment depreciation	35,755	28,865	24,016
Data processing	30,277	26,779	27,556
Insurance and assessments	17,365	22,625	16,404
Other professional services	21,492	19,917	17,803
Customer related expense	20,504	17,532	13,839
Intangible asset amortization	12,734	14,753	18,726
Loan expense	17,031	13,454	12,931
Acquisition, integration and reorganization costs	9,415	1,060	349
Foreclosed assets income, net	(213)	(17)	(3,555)
Goodwill impairment	0	1,470,000	0
Other expense	46,185	40,002	30,913
Total noninterest expense	637,417	1,984,019	502,251
Earnings (loss) before income taxes	822,334	(1,162,401)	632,940
Income tax expense	(215,375)	(75,173)	(164,304)
Net earnings (loss)	$ 606,959	$ (1,237,574)	$ 468,636
Basic income per share (usd per share)	$ 5.10	$ (10.61)	$ 3.90
Diluted income per share (usd per share)	$ 5.10	$ (10.61)	$ 3.90