Income Taxes TCIs and Related Unfunded Commitments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Affordable housing tax credit investments, net	$ 161,103	$ 161,052
Other tax credit investments, net	61,077	42,987
Total TCIs, net	222,180	204,039
Unfunded affordable housing tax credit commitments	53,108	49,364
Other tax credit liabilities	46,814	33,941
Total unfunded tax credit commitments and liabilities	99,922	83,305
Tax credits and benefits	(27,154)	(28,141)	$ (32,940)
Amortization of tax credits and benefits, net of tax benefits	19,298	17,378	20,429
Deferred tax expense	766	639	921
Total reduction in income tax expense	(7,090)	(10,124)	(11,590)
Total amortization of TCIs	$ 2,783	$ 6,187	$ 6,126