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Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Changes in accumulated other comprehensive income, net of tax        
Balance at the beginning of period     $ (1,431)  
Other comprehensive income and pension reclassification $ (430) $ 348 645 $ (643)
Balance at the end of period (786)   (786)  
Foreign currency        
Changes in accumulated other comprehensive income, net of tax        
Balance at the beginning of period     (744)  
Other comprehensive income and pension reclassification     593  
Balance at the end of period (151)   (151)  
Defined benefit pension plan        
Changes in accumulated other comprehensive income, net of tax        
Balance at the beginning of period     (687)  
Other comprehensive income and pension reclassification     52  
Balance at the end of period $ (635)   $ (635)