Investment Securities - Schedule of Present Cost or Amortized Cost and Fair Values of Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Investment securities, held-to-maturity
Amortized cost	$ 7,665
Fair value	7,300
Total held-to-maturity and available-for-sale investment securities
Amortized cost	279,487	$ 336,997
Accumulated unrealized gains	11	48
Accumulated unrealized losses	(7,091)	(9,528)
Fair value	272,407	327,517
U.S. government and government agencies
Investment securities, held-to-maturity
Amortized cost	7,665	757
Accumulated unrealized gains	0	0
Accumulated unrealized losses	(365)	(106)
Fair value	7,300	651
Investment securities, available-for-sale
Amortized cost	178,186	237,457
Accumulated unrealized gains	0	10
Accumulated unrealized losses	(5,993)	(9,000)
Fair value	172,193	228,467
Corporate debt securities
Investment securities, available-for-sale
Amortized cost	93,636	98,783
Accumulated unrealized gains	11	38
Accumulated unrealized losses	(733)	(422)
Fair value	$ 92,914	$ 98,399