Debt Securities Held to Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 411,945	$ 421,523
Gross Unrealized Gains	0	0
Gross Unrealized (Losses)	(60,018)	(51,132)
Allowance for Credit Losses	0	0
Fair Value	351,927	370,391
U.S. government and agency obligations
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	49,871	49,871
Gross Unrealized Gains	0	0
Gross Unrealized (Losses)	(7,981)	(7,304)
Allowance for Credit Losses	0	0
Fair Value	41,890	42,567
Mortgage-backed securities and collateralized mortgage obligations
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	362,074	371,652
Gross Unrealized Gains	0	0
Gross Unrealized (Losses)	(52,037)	(43,828)
Allowance for Credit Losses	0	0
Fair Value	$ 310,037	$ 327,824