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Commitments and Contingencies Warranty Account Activity (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]      
Beginning balance $ 54,512 $ 36,548  
New product warranties 7,987 8,380  
Other adjustments and expirations 5,933 37,604  
Claims activity (24,364) (25,955)  
Effect of change in exchange rates (766) (2,065)  
Ending balance 43,302 54,512 $ 36,548
Less: current portion of warranty 24,874 36,927  
Long-term warranty 18,428 17,585  
Warranty Expense $ 13,920 $ 45,984 $ 9,238