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Product Remediation Liability (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2017
USD ($)
Accrual for Environmental Loss Contingencies [Roll Forward]  
Product remediation accrual, beginning balance $ 33,487
Adjustments (15)
Remediation activity (5,672)
Effect of changes in foreign currency exchange rates 2,446
Product remediation accrual, ending balance $ 30,246