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Security Types (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value | $ 14,468 | $ 14,437
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value | 23,456 | 23,547
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value | 32,635 | 32,963
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value | 170,728 | 168,854
Available-for-sale Securities, Fair Value, Total | 241,287 | 239,801
Available For Sale Securities, Gross Unrealized Gains | 1,301 | 608
Available For Sale Securities, Gross Unrealized Losses | 3,132 | 5,630
Available-for-sale Securities, Amortized Cost Basis | 243,118 | 244,823
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 | 14,468 | 14,437
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value | 21,862 | 19,865
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value | 14,645 | 16,869
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value | 0 | 0
Available-for-sale Securities, Fair Value, Total | 50,975 | 51,171
Available For Sale Securities, Gross Unrealized Gains | 21 | 25
Available For Sale Securities, Gross Unrealized Losses | 763 | 1,200
Available-for-sale Securities, Amortized Cost Basis | 51,717 | 52,346
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 | 0 | 0
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value | 11,222 | 8,368
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value | 109,782 | 110,230
Available-for-sale Securities, Fair Value, Total | 121,004 | 118,598
Available For Sale Securities, Gross Unrealized Gains | 162 | 65
Available For Sale Securities, Gross Unrealized Losses | 2,143 | 3,738
Available-for-sale Securities, Amortized Cost Basis | 122,985 | 122,271
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 | 0 | 0
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value | 1,594 | 3,682
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value | 6,768 | 7,726
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value | 60,946 | 58,624
Available-for-sale Securities, Fair Value, Total | 69,308 | 70,032
Available For Sale Securities, Gross Unrealized Gains | 1,118 | 518
Available For Sale Securities, Gross Unrealized Losses | 226 | 692
Available-for-sale Securities, Amortized Cost Basis | $ 68,416 | $ 70,206

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