Tax Credit Investments - Amortization expense and tax benefit recognized (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Tax Credit Investments [Line items]
Intangible amortization expense	$ 1,324	$ 1,053
Income tax benefit	2,306	$ 2,888
Housing projects
Tax Credit Investments [Line items]
Intangible amortization expense	360
Income tax benefit	(227)
Low income housing tax credit | Housing projects
Tax Credit Investments [Line items]
Intangible amortization expense	360
Income tax benefit	$ (227)