Securities - Summary of Maturities of Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Available-for-Sale Securities:
Available-for-Sale Securities, Amortized Cost	$ 142,754	$ 151,943
Available-for-sale securities, at fair value	116,753	129,505
Held-to-Maturity Securities:
Held To Maturity Securities, Amortized Cost		510,820
Allowance for Credit Losses	(647)
Held To Maturity Securities, Amortized Cost, After Allowance for Credit Losses	471,065
Held-to-maturity securities, at amortized cost ,fair value	444,864	495,851
Corporate Bonds
Available-for-Sale Securities:
Available-for-Sale Securities After three months through one year, Amortized Cost	4,000
Available-for-Sale Securities After one year through five years, Amortized Cost	1,000	4,000
Available-for-Sale Securities After five years through ten years, Amortized Cost	20,799	21,824
Available-for-Sale Securities, Amortized Cost	25,799	25,824
Available-for-Sale Securities After three months through one year, Fair Value	3,802
Available-for-Sale Securities After one year through five years, Amortized Cost	729	3,710
Available-for-Sale Securities After five years through ten years, Amortized Cost	18,659	19,649
Available-for-sale securities, at fair value	23,190	23,359
Held-to-Maturity Securities:
Held-to-Maturity Securities, More than one year through five years, Amortized Cost	75,000	75,000
Held-to-Maturity Securities, More than five years through ten years, Amortized Cost	7,500	7,500
Held To Maturity Securities, Amortized Cost	82,500	82,500
Held-to-Maturity Securities, More than one year through five years, Fair Value	70,381	71,328
Held-to-Maturity Securities, More than five years through ten years, Fair Value	7,002	7,410
Held-to-maturity securities, at amortized cost ,fair value	77,383	78,738
U.S. Government Bonds
Available-for-Sale Securities:
Available-for-Sale Securities After one year through five years, Amortized Cost	2,989	2,985
Available-for-Sale Securities, Amortized Cost	2,989	2,985
Available-for-Sale Securities After one year through five years, Amortized Cost	2,713	2,689
Available-for-sale securities, at fair value	2,713	2,689
Mortgage-Backed Securities
Available-for-Sale Securities:
Available-for-Sale Securities, Amortized Cost	113,966	123,134
Available-for-sale securities, at fair value	90,850	103,457
Held-to-Maturity Securities:
Held To Maturity Securities, Amortized Cost	364,212	393,320
Held-to-maturity securities, at amortized cost ,fair value	342,985	382,493
FHLMC Certificates
Available-for-Sale Securities:
Available-for-Sale Securities, Amortized Cost	10,441	11,310
Available-for-sale securities, at fair value	8,537	9,634
Held-to-Maturity Securities:
Held-to-maturity securities, at amortized cost ,fair value	3,565	3,852
US Agency Bonds
Held-to-Maturity Securities:
Held-to-Maturity Securities, More than one year through five years, Amortized Cost	25,000	35,000
Held To Maturity Securities, Amortized Cost	25,000	35,000
Held-to-Maturity Securities, More than one year through five years, Fair Value	24,496	34,620
Held-to-maturity securities, at amortized cost ,fair value	$ 24,496	$ 34,620