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Accrued Product Warranties (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Movement in Standard Product Warranty Accrual [Roll Forward]      
Accrued product warranties, beginning of year $ 20,845 $ 16,514  
Amounts paid for warranty services (4,629) (4,139)  
Warranty provisions for products sold 3,709 4,734  
Business acquisitions and disposals 0 40  
Currency translation adjustments and other 46 78  
Accrued product warranties, end of year 19,971 17,227  
Current accrued product warranties, end of year 16,642 14,676 $ 17,476
Long-term accrued product warranties, end of ear $ 3,329 $ 2,551