Available-for-Sale Securities - Summary of Maturities of Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Available-for-Sale Securities:
Available-for-Sale Securities, Amortized Cost	$ 163,598	$ 115,174
Held-to-Maturity Securities:
Held-to-Maturity Securities, Amortized Cost	927	934
Available-for-sale securities, at fair value (Note 4)	154,799	113,346
Held-to-maturity securities, at amortized cost ,fair value	868	914
Corporate Bonds
Available-for-Sale Securities:
Available-for-Sale Securities After one year through five years, Amortized Cost	4,000	4,445
Available-for-Sale Securities After five years through ten years, Amortized Cost	21,849	16,798
Available-for-Sale Securities, Amortized Cost	25,849	21,243
Held-to-Maturity Securities:
Available-for-Sale Securities After one year through five years, Amortized Cost	3,801	4,381
Available-for-Sale Securities After five years through ten years, Amortized Cost	21,300	16,803
Available-for-sale securities, at fair value (Note 4)	25,101	21,184
U.S. Government Bonds
Available-for-Sale Securities:
Available-for-Sale Securities After one year through five years, Amortized Cost	2,982	2,981
Available-for-Sale Securities, Amortized Cost	2,982	2,981
Held-to-Maturity Securities:
Available-for-Sale Securities After one year through five years, Amortized Cost	2,833	2,934
Available-for-sale securities, at fair value (Note 4)	2,833	2,934
Mortgage-Backed Securities
Available-for-Sale Securities:
Available-for-Sale Securities, Amortized Cost	134,767	90,950
Held-to-Maturity Securities:
Available-for-sale securities, at fair value (Note 4)	126,865	89,228
FHLMC Certificates
Held-to-Maturity Securities:
Held-to-Maturity Securities, Amortized Cost	927	934
Held-to-maturity securities, at amortized cost ,fair value	$ 868	$ 914

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