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Fair Value Measurements (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Asset Impairments Charges and Other PP&E Impairment $ 1,217 $ 255,116 $ 0
Foreign currency forward contracts 39 561  
Total financial assets 39 561  
Foreign currency forward contracts 92 470  
Contingent consideration liabilities 1,923 1,761  
Total financial liabilities 2,015 2,231  
Level 2 [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Foreign currency forward contracts 39 561  
Total financial assets 39 561  
Foreign currency forward contracts 92 470  
Contingent consideration liabilities 0 0  
Total financial liabilities 92 470  
Level 3 [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Foreign currency forward contracts 0 0  
Total financial assets 0 0  
Foreign currency forward contracts 0 0  
Contingent consideration liabilities 1,923 1,761  
Total financial liabilities $ 1,923 $ 1,761