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Warranty (Tables)
3 Months Ended
Mar. 31, 2015
Product Warranties Disclosures [Abstract]  
Changes in warranty reserve
The changes in warranty reserves for the three months ended March 31, 2015 and 2014 were as follows:
 
Three Months Ended
 
March 31
 
2015
 
2014
Beginning balance
$
9,686

 
$
9,663

Additions charged to expense
2,413

 
2,131

Foreign currency fluctuations
(167
)
 
22

Claims paid
(2,498
)
 
(2,358
)
Ending balance
$
9,434

 
$
9,458