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Warranty (Tables)
 3 Months Ended
Oct. 31, 2011
Warranty [Abstract]  
Reconciliation Of Warranty Reserves

 

 

 

 

 

 

 

 

 

 

October 31,

 

 

 

2011

 

2010

 

Beginning balance

 

$

19,720

 

$

15,707

 

Accruals for warranties issued during the reporting period

 

 

791

 

 

2,443

 

Adjustments related to pre - existing warranties (including changes in estimates)

 

 

(535

)

 

2,170

 

Less settlements made during the period

 

 

(3,841

)

 

(988

)

Ending balance

 

$

16,135

 

$

19,332