Revenue From Contracts With Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Total interest income	$ 322,904	$ 273,337
Service charges on deposit accounts	3,571	2,934
Other commissions and fees	11,580	9,158
Leased equipment income	13,094	11,354
Gain on sale of loans and leases	60	139
Gain on sale of securities	104	101
Other income	3,155	4,116
Total noninterest income	20,818	44,829
Revenues	343,722	318,166
Service charges on deposit accounts	7,342	5,971
Dividends and Gains (Losses) on Equity Investments	(11,375)	10,904
Warrant income	629	6,123
Interest Income
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	0	0
Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	3,571	2,934
Other commissions and fees
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	3,773	2,857
Leased equipment income
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	0	0
Gain on sale of loans
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	0	0
Gain on sale of securities
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	0	0
Other income
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	(2)	180
Noninterest Income
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	7,342	5,971
Dividends and Gains (Losses) on Equity Investments
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	0	0
Warranty Income
Disaggregation of Revenue [Line Items]
Service charges on deposit accounts	$ 0	$ 0