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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, 2015
Dec. 31, 2014
Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Abstract]      
Beginning balance [1] $ 462 $ (2,602)  
Other comprehensive income (loss) before reclassification [1] 439 3,836  
Amount reclassified from accumulated other comprehensive income (loss) [1] (413) (772)  
Other comprehensive income (loss), net of tax amount 26 [1] 3,064 [1] $ (5,399)
Ending balance [1] $ 488 $ 462 $ (2,602)
[1] All amounts are net of tax. Amounts in parentheses indicate debits.