Tax Credit Investments - Amortization expense and tax benefit recognized (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Tax Credit Investments [Line items]
Intangible amortization expense	$ 1,324	$ 1,053	$ 2,648	$ 2,106
Income tax benefit	2,535	2,725	4,841	5,613
Housing projects
Tax Credit Investments [Line items]
Intangible amortization expense	278	111	639	111
Income tax benefit	(509)	(156)	(735)	(156)
Low income housing tax credit | Housing projects
Tax Credit Investments [Line items]
Intangible amortization expense	278	111	639	111
Income tax benefit	$ (509)	$ (156)	$ (735)	$ (156)