Tax Credit Investments - Income Statement Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Components of Income Tax Expense:
Affordable housing tax credits and other tax benefits	$ 1,614	$ 899	$ 2,358	$ 1,796
Other tax credit investment credits and tax benefits	2,539	2,743	5,090	5,428
Total reduction in income tax expense	4,153	3,642	7,448	7,224
Non-Interest Expenses
Amortization of Tax Credit Investments:
Affordable housing tax credit investment losses	653	460	1,068	1,003
Affordable housing tax credit investment impairment losses	363	431	625	772
Other tax credit investment losses	386	351	695	524
Other tax credit investment impairment losses	1,791	1,730	3,701	3,417
Total amortization of tax credit investments recorded in non-interest expense	$ 3,193	$ 2,972	$ 6,089	$ 5,716