Investment Securities, Contractual Maturity (Details) $ in Thousands	Jun. 30, 2023 USD ($)
Amortized Cost [Abstract]
One year or less	$ 321
After one year through five years	18,571
After five years through ten years	7,135
After ten years	112,067
Total	138,094
Fair Value [Abstract]
One year or less	321
After one year through five years	18,018
After five years through ten years	6,871
After ten years	89,433
Total	114,643
Amortized Cost [Abstract]
One year or less	283
After one year through five years	12,292
After five years through ten years	28,355
After ten years	797,516
Fair value, excluding securities without single maturity date	838,446
Fair Value [Abstract]
One year or less	283
After one year through five years	12,201
After five years through ten years	26,675
After ten years	645,344
Fair value, excluding investment securities without single maturity date	$ 684,503