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Guarantees and Product Warranties (Tables)
 3 Months Ended
Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]  
Changes in warranty liability balance
Changes in the Company’s warranty liability balance are illustrated in the following table:
 
 
2014
 
2013
Balance at January 1
 
$
83,199

 
$
81,751

Current period accruals (1)
 
11,836

 
12,936

Current period settlements
 
(12,278
)
 
(13,011
)
Balance at March 31
 
$
82,757

 
$
81,676

(1)
Includes the impact of foreign exchange rate fluctuations