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Security Types (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value $ 10,414 $ 5,525
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 40,800 26,620
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 116,391 84,274
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 239,869 218,758
Available-for-sale Securities, Fair Value, Total 407,474 335,177
Available For Sale Securities, Gross Unrealized Gains 7,285 10,389
Available For Sale Securities, Gross Unrealized Losses 3,612 242
Available-for-sale Securities, Amortized Cost Basis 403,801 325,030
US Government and Government Agencies and Authorities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 10,033 5,048
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 39,042 24,834
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 70,434 55,367
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 0 12,199
Available-for-sale Securities, Fair Value, Total 119,509 97,448
Available For Sale Securities, Gross Unrealized Gains 1,657 3,156
Available For Sale Securities, Gross Unrealized Losses 1,492 98
Available-for-sale Securities, Amortized Cost Basis 119,344 94,390
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 0 0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 779 1,154
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 31,041 20,502
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 181,794 141,814
Available-for-sale Securities, Fair Value, Total 213,614 163,470
Available For Sale Securities, Gross Unrealized Gains 2,188 3,245
Available For Sale Securities, Gross Unrealized Losses 1,840 133
Available-for-sale Securities, Amortized Cost Basis 213,266 160,358
US States and Political Subdivisions Debt Securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value 381 477
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 979 632
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 14,916 8,405
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 58,075 64,745
Available-for-sale Securities, Fair Value, Total 74,351 74,259
Available For Sale Securities, Gross Unrealized Gains 3,440 3,988
Available For Sale Securities, Gross Unrealized Losses 280 11
Available-for-sale Securities, Amortized Cost Basis $ 71,191 $ 70,282