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Accumulated Other Comprehensive (Loss) Income (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at $ (8,801)  
Balance at (8,079)  
Balance at (1,080)  
Balance at (1,063)  
Balance at (7,721)  
Other comprehensive income (loss), net of tax 705 $ 3,115
Balance at (7,016)  
Accumulated Translation Adjustment    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at (5,848)  
Other comprehensive income adjustments 679  
Balance at (5,169)  
Other comprehensive income (loss), net of tax 679  
Accumulated Defined Benefit Plans Adjustment    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Other comprehensive income adjustments 43  
Other comprehensive income (loss), tax 17  
Other comprehensive income (loss), net of tax 26  
Minimum Pension Liability Adjustment | Accumulated Defined Benefit Plans Adjustment    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at 197  
Other comprehensive income adjustments (5)  
Balance at 192  
Postretirement Health Coverage | Accumulated Defined Benefit Plans Adjustment    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at (3,150)  
Other comprehensive income adjustments 48  
Balance at $ (3,102)