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Fair Value of Assets and Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
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 $ 18,300 $ 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 66,045 60,943
State and political subdivisions [Member]    
Summary of fair value measurements of assets measured at fair value on a recurring basis    
Assets, Fair value, Recurring 11,457 11,356
Interest rate contracts - assets [Member]    
Summary of fair value measurements of assets measured at fair value on a recurring basis    
Assets, Fair value, Recurring 1,190 687
Interest rate contracts - liabilities [Member]    
Summary of fair value measurements of assets measured at fair value on a recurring basis    
Liabilities, Fair Value, Recurring (1,190) (687)
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 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 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 18,300 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 66,045 60,943
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 11,457 11,356
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 1,190 687
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 (1,190) (687)
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
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 - 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] | Interest rate contracts - liabilities [Member]    
Summary of fair value measurements of assets measured at fair value on a recurring basis    
Liabilities, Fair Value, Recurring