Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities - Summary of Additional Information Related to the Investments (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Investments in qualified housing partnerships, net:
Tax credits and other tax benefits recognized	$ 15,304,000	$ 12,754,000	$ 31,398,000	$ 25,584,000
Amortization expense included in income tax expense	10,506,000	10,042,000	23,172,000	20,067,000
Investments in tax credit and other investments, net:
Amortization of tax credit and other investments (1)	55,914,000	14,979,000	66,024,000	28,879,000
Unrealized losses on equity securities with readily determinable values	(369,000)	(783,000)	(8,000)	(1,944,000)
Historic Tax Credit Investment
Investments in tax credit and other investments, net:
Pre-tax impairment charge or recovery	$ 1,400,000	$ 0	$ 1,600,000	$ 0