Debt Securities Held-to-Maturity - Mortgage Backed Securities Held-to-Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 10,114	$ 10,760
Gross Unrealized Gains	0	90
Gross Unrealized Losses	(743)	(461)
Estimated Fair Value	9,371	10,389
Pass-through certificates, GSE
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	10,114	10,760
Gross Unrealized Gains	0	90
Gross Unrealized Losses	(743)	(461)
Estimated Fair Value	$ 9,371	$ 10,389