Accumulated Other Comprehensive Income (Loss) - Accumulated other comprehensive income/loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balances	$ 724,171	$ 900,187	$ 870,981
Change in net unrealized gain (loss) on securities available for sale	5,562	2,049	(742)
Ending balances	850,242	724,171	900,187
Change in net unrealized gain (loss) on securities available for sale
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balances	1,484	(565)
Change in net unrealized gain (loss) on securities available for sale	5,562	2,049	(742)
Ending balances	$ 7,046	$ 1,484	$ (565)