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Warranty (Tables)
 9 Months Ended
Sep. 30, 2013
Product Warranties Disclosures [Abstract]  
Changes in Warranty Reserve
The changes in warranty reserves for the nine months ended September 30, 2013 and 2012 were as follows:
 
Nine Months Ended
 
September 30

2013
 
2012
Beginning balance
$
9,357

 
$
8,759

Additions charged to expense
8,239

 
9,384

Reserve divested
—

 
(236
)
Foreign currency fluctuations
(50
)
 
(37
)
Claims paid
(7,704
)
 
(8,647
)
Ending balance
$
9,842

 
$
9,223