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Accumulated Other Comprehensive Income (Components of Accumulated Other Comprehensive Income and Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance [1] $ 488    
Other comprehensive income (loss) before reclassification [1] (4,422)    
Amount reclassified from accumulated other comprehensive income [1] (185)    
Net of tax amount (4,607) [1] $ 26 $ 3,064
Ending balance [1] (4,119) 488  
Unrealized gains on available for sale securities [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Beginning balance [1] 488 462  
Other comprehensive income (loss) before reclassification [1] (4,740) 439  
Amount reclassified from accumulated other comprehensive income [1] (185) (413)  
Net of tax amount [1] (4,925) 26  
Ending balance [1] (4,437) $ 488 $ 462
Unrealized gain on pension liability [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Other comprehensive income (loss) before reclassification [1] 318    
Net of tax amount [1] 318    
Ending balance [1] $ 318    
[1] All amounts are net of tax. Amounts in parentheses indicate debits.