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Warranties
9 Months Ended
Oct. 31, 2012
Product Warranty Costs [Abstract]  
Warranties
WARRANTIES
Accruals necessary for product warranties are estimated based on historical warranty costs and average time elapsed between purchases and returns for each division. Additional accruals are made for any significant, discrete warranty issues. Changes in the warranty accrual were as follows:
 
Three Months Ended
 
Nine Months Ended
 
October 31,
2012
 
October 31,
2011
 
October 31,
2012
 
October 31,
2011
Beginning balance
$
1,949

 
$
1,642

 
$
1,699

 
$
1,437

Accrual for warranties
628

 
763

 
2,226

 
2,352

Settlements made (in cash or in kind)
(698
)
 
(1,066
)
 
(2,046
)
 
(2,450
)
Ending balance
$
1,879

 
$
1,339

 
$
1,879

 
$
1,339