XML 37 R35.htm IDEA: XBRL DOCUMENT v2.4.0.6
Commitments and Contingencies (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Nov. 30, 2012
Nov. 30, 2011
Nov. 30, 2012
Y
Nov. 30, 2011
Warranties        
Product warranty period, low end of range (in years)     2  
Product warranty period, high end of range (in years)     5  
Accrual for warranty returns        
Beginning balance $ 21,860 $ 24,452 $ 26,665 $ 24,021
Additions to accrual 11,027 8,124 25,800 24,620
Reductions of the accrual - payments and credits issued (7,496) (8,377) (27,074) (24,442)
Ending balance $ 25,931 $ 24,199 $ 25,931 $ 24,199