Revenue From Contracts With Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Total interest income	$ 410,044	$ 290,082	$ 1,083,466	$ 843,924
Service charges on deposit accounts	3,608	3,407	10,813	9,793
Other commissions and fees	10,034	11,792	32,427	31,654
Leased equipment income	12,835	10,943	38,264	33,144
Gain on sale of loans and leases	58	0	130	1,561
Net realized gains (losses)	86	515	(1,019)	616
Other income	8,478	2,723	14,682	9,741
Total noninterest income	38,619	51,345	93,783	136,545
Revenues	448,663	341,427	1,177,249	980,469
Service charges on deposit accounts	7,801	6,073	22,843	18,493
Dividends and Gains (Losses) on Equity Investments	3,228	8,387	(4,050)	24,685
Warrant income	292	13,578	2,536	25,351
Interest Income
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	0	0	0	0
Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	3,608	3,407	10,813	9,793
Other commissions and fees
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	3,834	2,680	11,608	8,140
Leased equipment income
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	0	0	0	0
Gain on sale of loans
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	0	0	0	0
Gain on sale of securities
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	0	0	0	0
Other income
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	359	(14)	422	560
Noninterest Income
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	7,801	6,073	22,843	18,493
Dividends and Gains (Losses) on Equity Investments
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	0	0	0	0
Warranty Income
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	$ 0	$ 0	$ 0	$ 0