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Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Accumulated other comprehensive loss at December 31, 2014     $ (12,807)  
Net current-period other comprehensive income (loss) $ (1,365) $ (1,866) (757) $ (582)
Accumulated other comprehensive loss at September 30, 2015 (13,564)   (13,564)  
Foreign currency translation adjustments [Member]        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Accumulated other comprehensive loss at December 31, 2014     (12,807)  
Net current-period other comprehensive income (loss)     (757)  
Accumulated other comprehensive loss at September 30, 2015 $ (13,564)   $ (13,564)