Investment Securities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Schedule of Investments [Line Items]
AFS accrued interest	$ 1,100		$ 1,100
HTM, at amortized cost (fair value $355,789 and $348,505)	404,831		404,831		$ 399,494
HTM accrued interest	1,800		1,800
Available-for-sale securities pledged as collateral	406,000		406,000		338,800
Net gains	0	$ 0	0	$ 0
FHLB
Schedule of Investments [Line Items]
Letter of credit outstanding, amount	$ 175,000		$ 175,000		$ 189,000