Other Assets (Details) - USD ($) $ in Thousands		Jun. 30, 2021	Dec. 31, 2020
Other Assets [Abstract]
Cash surrender value of BOLI		$ 204,146	$ 203,031
LIHTC investments		251,570	213,034
Operating lease ROU assets, net (1)	[1]	120,595	119,787
Interest receivable		103,758	101,596
Taxes receivable		27,900	59,565
Equity investments without readily determinable fair values		35,321	34,304
SBIC Investments		36,816	32,327
Prepaid expenses		25,409	22,999
Equity warrants	[2]	4,391	4,520
Equity investments with readily determinable fair values		13,063	6,147
Other receivables/assets		101,528	63,016
Other assets		$ 924,497	$ 860,326

[1] See Note 9. Leases for further details regarding the operating lease ROU assets.

[2] See Note 11. Derivatives for information regarding equity warrants.