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Disclosures About Fair Value of Assets and Liabilities (Details) - Available-For-Sale Securities [Member] - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
U.S. Treasury and Government agencies [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring $ 13,358 $ 10,905
Mortgage-backed securities [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring 61,603 61,343
State and political subdivisions [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring 15,097 17,518
Equity securities [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring 70 23
Interest rate contracts - assets [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring 623 490
Interest rate contracts - liabilities [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring (623) (490)
Level 1 [Member] | U.S. Treasury and Government agencies [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring
Level 1 [Member] | Mortgage-backed securities [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring
Level 1 [Member] | State and political subdivisions [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring
Level 1 [Member] | Equity securities [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring
Level 1 [Member] | Interest rate contracts - assets [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring
Level 1 [Member] | Interest rate contracts - liabilities [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring
Level 2 [Member] | U.S. Treasury and Government agencies [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring 13,358 10,905
Level 2 [Member] | Mortgage-backed securities [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring 61,603 61,343
Level 2 [Member] | State and political subdivisions [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring 15,097 17,518
Level 2 [Member] | Equity securities [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring 70 23
Level 2 [Member] | Interest rate contracts - assets [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring 623 490
Level 2 [Member] | Interest rate contracts - liabilities [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring (623) (490)
Level 3 [Member] | U.S. Treasury and Government agencies [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring
Level 3 [Member] | Mortgage-backed securities [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring
Level 3 [Member] | State and political subdivisions [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring
Level 3 [Member] | Equity securities [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring
Level 3 [Member] | Interest rate contracts - assets [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring
Level 3 [Member] | Interest rate contracts - liabilities [Member]    
Fair value measurements of securities measured at fair value on a recurring basis    
Assets, Fair value, Recurring