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Product Warranties (Tables)
3 Months Ended
Mar. 31, 2017
Product Warranties Disclosures [Abstract]  
Summary Of Product Warranty Activity
The following table summarizes product warranty activity recorded during the three months ended March 31, 2017 and 2016.
 
2017
 
2016
Balance at January 1
$
33,978

 
$
28,210

Provision for warranty accrual
4,523

 
4,814

Warranty claims
(2,966
)
 
(3,562
)
Foreign currency translation
438

 
780

 Balance at March 31
$
35,973

 
$
30,242