Tax Credit Investments - Affordable Housing Tax Credit Investments and Other Tax Credit Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Components of Income Tax Expense:
Affordable housing tax credits and other tax benefits	$ 4,748	$ 3,525	$ 5,414
Other tax credit investment credits and tax benefits	11,617	9,320	8,065
Total reduction in income tax expense	16,365	12,845	13,479
Amortization Recorded in Non-Interest Expenses
Amortization of Tax Credit Investments:
Affordable housing tax credit investment losses	2,311	1,895	2,714
Affordable housing tax credit investment impairment losses	1,187	1,416	2,209
Other tax credit investment losses	1,254	811	2,234
Other tax credit investment impairment losses	7,655	6,788	6,178
Total amortization of tax credit investments recorded in non-interest expense	$ 12,407	$ 10,910	$ 13,335