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Security Types (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value $ 5,107 $ 4,993
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 32,464 29,160
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 70,664 29,146
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 212,687 172,603
Available-for-sale Securities, Fair Value, Total 320,922 235,902
Available For Sale Securities, Gross Unrealized Gains 10,156 3,117
Available For Sale Securities, Gross Unrealized Losses 317 368
Available-for-sale Securities, Amortized Cost Basis 311,083 233,153
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 5,011 4,993
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 29,994 27,245
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 55,660 18,470
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 5,389 0
Available-for-sale Securities, Fair Value, Total 96,054 50,708
Available For Sale Securities, Gross Unrealized Gains 3,396 215
Available For Sale Securities, Gross Unrealized Losses 19 98
Available-for-sale Securities, Amortized Cost Basis 92,677 50,591
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 1,302 560
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 8,292 4,510
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 145,053 118,207
Available-for-sale Securities, Fair Value, Total 154,647 123,277
Available For Sale Securities, Gross Unrealized Gains 3,415 798
Available For Sale Securities, Gross Unrealized Losses 285 261
Available-for-sale Securities, Amortized Cost Basis 151,517 122,740
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 96 0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value 1,168 1,355
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value 6,712 6,166
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value 62,245 54,396
Available-for-sale Securities, Fair Value, Total 70,221 61,917
Available For Sale Securities, Gross Unrealized Gains 3,345 2,104
Available For Sale Securities, Gross Unrealized Losses 13 9
Available-for-sale Securities, Amortized Cost Basis $ 66,889 $ 59,822