Warranty (Tables)

12 Months Ended

Jul. 31, 2013

Warranty [Abstract]

Reconciliation Of Warranty Reserves

Balance at July 31, 2011	$	19,720
Accruals for warranties issued during the reporting period		5,002
Accruals related to pre-existing warranties (including changes in estimates)		(2,956)
Less settlements made during the period		(10,861)
Balance at July 31, 2012	$	10,905
Accruals for warranties issued during the reporting period		5,940
Accruals related to pre-existing warranties (including changes in estimates)		(1,081)
Less settlements made during the period		(5,238)
Balance at July 31, 2013	$	10,526