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Fair Value Measurements (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Foreign Currency Contract, Asset, Fair Value Disclosure $ 20 $ 39
Assets, Fair Value Disclosure 20 39
Foreign Currency Contracts, Liability, Fair Value Disclosure 170 92
Accrued Liabilities, Fair Value Disclosure 301 1,923
Liabilities, Fair Value Disclosure 471 2,015
Fair Value, Inputs, Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Foreign Currency Contract, Asset, Fair Value Disclosure 20 39
Assets, Fair Value Disclosure 20 39
Foreign Currency Contracts, Liability, Fair Value Disclosure 170 92
Accrued Liabilities, Fair Value Disclosure 0 0
Liabilities, Fair Value Disclosure 170 92
Fair Value, Inputs, Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Foreign Currency Contract, Asset, Fair Value Disclosure 0 0
Assets, Fair Value Disclosure 0 0
Foreign Currency Contracts, Liability, Fair Value Disclosure 0 0
Accrued Liabilities, Fair Value Disclosure 301 1,923
Liabilities, Fair Value Disclosure $ 301 $ 1,923