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Accumulated Other Comprehensive Income (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balances     $ 163,736 $ 154,299
Other comprehensive income $ (395) $ 425 (2,464) 1,167
Balances 168,115 159,940 168,115 159,940
Accumulated Other Comprehensive Income (Loss) [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balances     (1,309) (993)
Cumulative effect adjustment 6   6  
Other comprehensive income     (2,464) 1,167
Balances (3,767) 174 (3,767) 174
Accumulated Net Unrealized Investment Gain (Loss) [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balances     (1,255) (931)
Cumulative effect adjustment 6   6  
Other comprehensive income     (2,474) 1,167
Balances (3,723) 236 (3,723) 236
Unrealized Gains Losses On Securities Transferred From Available For Sale To Held To Maturity [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balances     (54) (62)
Other comprehensive income, transferred from Available for sale to Held to maturity     10  
Balances $ (44) $ (62) $ (44) $ (62)