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Investment Securities - Available-for-Sale and Held-to-Maturity (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Schedule Of Investments [Line Items]    
Available-for-sale, amortized cost $ 144,893 $ 141,883
Available-for-sale, gross unrealized gains 738 8
Available-for-sale, gross unrealized losses (10,066) (11,096)
Investment securities available-for-sale, at fair value 135,565 130,795
Held-to-maturity, amortized cost 1,104 1,862
Held-to-maturity, gross unrealized losses (63) (93)
Held-to-maturity, estimated fair value 1,041 1,769
Residential Mortgage Backed Securities [Member]    
Schedule Of Investments [Line Items]    
Available-for-sale, amortized cost 47,221 47,659
Available-for-sale, gross unrealized gains 580 2
Available-for-sale, gross unrealized losses (3,073) (3,704)
Investment securities available-for-sale, at fair value 44,728 43,957
Commercial Mortgage Backed Securities [Member]    
Schedule Of Investments [Line Items]    
Available-for-sale, amortized cost 9,446 12,169
Available-for-sale, gross unrealized gains   4
Available-for-sale, gross unrealized losses (406) (480)
Investment securities available-for-sale, at fair value 9,040 11,693
Held-to-maturity, amortized cost 575 1,167
Held-to-maturity, gross unrealized losses (22) (41)
Held-to-maturity, estimated fair value 553 1,126
US Government Agencies Debt Securities [Member]    
Schedule Of Investments [Line Items]    
Available-for-sale, amortized cost 11,849 5,116
Available-for-sale, gross unrealized gains 158  
Available-for-sale, gross unrealized losses (727) (846)
Investment securities available-for-sale, at fair value 11,280 4,270
Held-to-maturity, amortized cost 471 610
Held-to-maturity, gross unrealized losses (34) (40)
Held-to-maturity, estimated fair value 437 570
US States and Political Subdivisions Debt Securities [Member]    
Schedule Of Investments [Line Items]    
Available-for-sale, amortized cost 1,621 2,166
Available-for-sale, gross unrealized losses (63) (94)
Investment securities available-for-sale, at fair value 1,558 2,072
Held-to-maturity, amortized cost 58 85
Held-to-maturity, gross unrealized losses (7) (12)
Held-to-maturity, estimated fair value 51 73
Corporate Notes [Member]    
Schedule Of Investments [Line Items]    
Available-for-sale, amortized cost 17,757 17,817
Available-for-sale, gross unrealized gains   2
Available-for-sale, gross unrealized losses (2,800) (1,898)
Investment securities available-for-sale, at fair value 14,957 15,921
US Treasury Securities [Member]    
Schedule Of Investments [Line Items]    
Available-for-sale, amortized cost 56,999 56,956
Available-for-sale, gross unrealized losses (2,997) (4,074)
Investment securities available-for-sale, at fair value $ 54,002 $ 52,882