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Fair Value of Assets and Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
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State and political subdivisions [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Assets, Fair value, Recurring | $ 9,843 | $ 11,356
Interest rate contracts - liabilities [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Liabilities, Fair Value, Recurring | (4,233) | (687)
Interest rate contracts - assets [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Assets, Fair value, Recurring | 4,233 | 687
U.S. Treasury and Government Agencies [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Assets, Fair value, Recurring | 12,264 | 18,670
Mortgage-backed securities [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Assets, Fair value, Recurring | 54,922 | 60,943
Level 1 [Member] | State and political subdivisions [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Assets, Fair value, Recurring |  |
Level 1 [Member] | Interest rate contracts - liabilities [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Liabilities, Fair Value, Recurring |  |
Level 1 [Member] | U.S. Treasury and Government Agencies [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Assets, Fair value, Recurring |  |
Level 1 [Member] | Mortgage-backed securities [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Assets, Fair value, Recurring |  |
Level 2 [Member] | State and political subdivisions [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Assets, Fair value, Recurring | 9,843 | 11,356
Level 2 [Member] | Interest rate contracts - liabilities [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Liabilities, Fair Value, Recurring | (4,233) | (687)
Level 2 [Member] | Interest rate contracts - assets [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Assets, Fair value, Recurring | 4,233 | 687
Level 2 [Member] | U.S. Treasury and Government Agencies [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Assets, Fair value, Recurring | 12,264 | 18,670
Level 2 [Member] | Mortgage-backed securities [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Assets, Fair value, Recurring | 54,922 | 60,943
Level 3 [Member] | State and political subdivisions [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Assets, Fair value, Recurring |  |
Level 3 [Member] | Interest rate contracts - liabilities [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Liabilities, Fair Value, Recurring |  |
Level 3 [Member] | Interest rate contracts - assets [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Assets, Fair value, Recurring |  |
Liabilities, Fair Value, Recurring |  |
Level 3 [Member] | U.S. Treasury and Government Agencies [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Assets, Fair value, Recurring |  |
Level 3 [Member] | Mortgage-backed securities [Member] |  |
Summary of fair value measurements of assets measured at fair value on a recurring basis |  |
Assets, Fair value, Recurring |  |

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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