Warranty (Tables)

6 Months Ended

Jan. 31, 2014

Warranty [Abstract]

Reconciliation Of Warranty Reserves

	January 31,
	2014	2013
Beginning balance	$        10,526	$        10,905
Accruals for warranties issued during the reporting period	1,710	3,816
Accruals related to pre-existing warranties (including changes in estimates)	(342)	395
Less settlements made during the period	(2,404)	(2,224)
Ending balance	$          9,490	$        12,892