Tax Credit Investments - Income Statement Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Components of Income Tax Expense:
Affordable housing tax credits and other tax benefits	$ 1,184	$ 948	$ 3,542	$ 2,744
Other tax credit investment credits and tax benefits	2,557	2,702	7,647	8,130
Total reduction in income tax expense	3,741	3,650	11,189	10,874
Non-Interest Expenses
Amortization of Tax Credit Investments:
Affordable housing tax credit investment losses	598	681	1,666	1,684
Affordable housing tax credit investment impairment losses	266	387	891	1,159
Other tax credit investment losses	308	256	1,003	780
Other tax credit investment impairment losses	1,933	1,755	5,634	5,172
Total amortization of tax credit investments recorded in non-interest expense	$ 3,105	$ 3,079	$ 9,194	$ 8,795