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		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Investments in qualified housing partnerships, net:
Tax credits and other tax benefits recognized	$ 15,660,000	$ 13,180,000	$ 47,058,000	$ 38,764,000
Amortization expense included in income tax expense	11,587,000	10,431,000	34,759,000	30,498,000
Investments in tax credit and other investments, net:
Amortization of tax credit and other investments	49,694,000	19,874,000	115,718,000	48,753,000
Unrealized losses on equity securities with readily determinable values	(674,000)	(1,014,000)	(682,000)	(2,958,000)
Historic Tax Credit Investment
Investments in tax credit and other investments, net:
Pre-tax impairment charge or recovery	$ (790,000)	$ 0	$ 831,000	$ 0