Revenue From Contracts With Customers Revenue From Contracts With Customers (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue From Contracts With Customers [Line Items]
Total interest income	$ 1,158,729	$ 1,103,491	$ 1,219,893
Gain on sale of loans and leases	1,733	2,139	1,114
Gain on sale of securities	1,615	13,171	25,445
Service charges on deposit accounts	24,843	25,763	35,470
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
Other income	16,821	10,831	10,914
Total noninterest income	193,927	146,060	142,562
Total Income	1,352,656	1,249,551	1,362,455
Dividends and gains (losses) on equity investments	23,115	14,984	(567)
Warrant income	49,341	10,609	8,669
Interest [Member]
Revenue From Contracts With Customers [Line Items]
Service charges on deposit accounts	0	0	0
Service Charges On Deposit Accounts
Revenue From Contracts With Customers [Line Items]
Service charges on deposit accounts	13,269	10,351	14,637
Other Commissions And Fees
Revenue From Contracts With Customers [Line Items]
Service charges on deposit accounts	11,018	13,412	19,216
Lease Equipment Income [Member]
Revenue From Contracts With Customers [Line Items]
Service charges on deposit accounts	0	0	0
Gain On Sale Of Loans [Member]
Revenue From Contracts With Customers [Line Items]
Service charges on deposit accounts	0	0	0
Gain On Sale Of Securities [Member]
Revenue From Contracts With Customers [Line Items]
Service charges on deposit accounts	0	0	0
Other [Member]
Revenue From Contracts With Customers [Line Items]
Service charges on deposit accounts	556	2,000	1,617
Noninterest Income [Member]
Revenue From Contracts With Customers [Line Items]
Service charges on deposit accounts	24,843	25,763	35,470
Dividends and Gains (Losses) on Equity Investments
Revenue From Contracts With Customers [Line Items]
Service charges on deposit accounts	0	0	0
Warranty Income
Revenue From Contracts With Customers [Line Items]
Service charges on deposit accounts	$ 0	$ 0	$ 0