Investments in Qualified Affordable Housing Partnerships - Estimates for Unfunded Affordable Housing Commitments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Federal Home Loan Banks [Abstract]
2022	$ 3,871
2023	7,707
2024	2,999
2025	266
2026	350
Thereafter	2,036
Total unfunded commitments	17,229	$ 18,100
Tax credit and other tax benefits recognized	15,037	11,435	$ 6,506
Amortization of investments	$ 13,660	$ 9,674	$ 5,527