CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Apr. 25, 2015	Apr. 26, 2014	Apr. 25, 2015	Apr. 26, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 20,258us-gaap_NetIncomeLoss	$ 7,895us-gaap_NetIncomeLoss	$ 50,497us-gaap_NetIncomeLoss	$ 23,488us-gaap_NetIncomeLoss
Foreign currency translation gains (losses), net of tax	38	(46)	(688)	(332)
Comprehensive income	$ 20,296us-gaap_ComprehensiveIncomeNetOfTax	$ 7,849us-gaap_ComprehensiveIncomeNetOfTax	$ 49,809us-gaap_ComprehensiveIncomeNetOfTax	$ 23,156us-gaap_ComprehensiveIncomeNetOfTax

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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