Investment Securities, Contractual Maturity (Details) $ in Thousands	Sep. 30, 2024 USD ($)
Amortized Cost [Abstract]
One year or less	$ 359
After one year through five years	18,598
After five years through ten years	2,233
After ten years	392,904
Total	414,094
Fair Value [Abstract]
One year or less	359
After one year through five years	18,632
After five years through ten years	2,206
After ten years	380,366
Total	401,563
Amortized Cost [Abstract]
One year or less	982
After one year through five years	22,486
After five years through ten years	14,939
After ten years	742,103
Total	780,510
Fair Value [Abstract]
One year or less	977
After one year through five years	22,283
After five years through ten years	14,403
After ten years	615,038
Total	$ 652,701