Other Assets (Details) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2022		Dec. 31, 2021
Other Assets [Abstract]
Cash surrender value of BOLI		$ 206,650		$ 203,836
LIHTC investments		329,796		297,746
Operating lease ROU assets, net (2)	[1]	124,773		123,225
Interest receivable		141,330		120,329
Taxes receivable		27,050		36,011
Equity investments without readily determinable fair values		62,850		62,975
SBIC Investments		59,447		46,861
Prepaid expenses		30,125		27,632
Equity warrants	[2]	4,215		3,555
Equity investments with readily determinable fair values		2		28,578
Other receivables/assets		124,644		133,244
Other assets		1,432,532		1,083,992
Deferred Income Tax Assets, Net		$ 321,650	[3]	0
Vesting period of time-based restricted stock, lower limit		3 years
Other Assets
Other Assets [Abstract]
Deferred Income Tax Liabilities, Net				19,600
Other Assets [Line Items]
Deferred Income Tax Liabilities, Net				$ 19,600

[1] See Note 8. Leases for further details regarding the operating lease ROU assets.

[2] See Note 10. Derivatives for information regarding equity warrants.

[3] At December 31, 2021, this was a net deferred tax liability of $19.6 million. The change to a deferred tax asset in 2022 was primarily attributable to the increase in unrealized losses on the Company's investment securities portfolio.