Supplemental Consolidating Financial Statements - Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Oct. 26, 2013	Oct. 27, 2012	Jul. 27, 2013	Jul. 28, 2012
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	$ (18,693)	$ 27,716
INVESTING ACTIVITIES:
Capital expenditures	(30,288)	(12,523)
Proceeds from sale of assets	2,465	2,006
Changes in restricted cash	(305)	0
Net cash used in investing activities	(28,128)	(10,517)
FINANCING ACTIVITIES:
Proceeds from borrowings on senior Credit Agreement	164,000	0
Principal payments on Senior Credit Agreement	(131,563)	0
Repurchases of common stock	0	(15,203)	(15,203)	(12,960)
Exercise of stock options and other	10,124	166
Restricted stock tax withholdings	(609)	(62)
Excess tax benefit from share-based awards	656	64
Principal payments on capital lease obligations	0	(19)
Intercompany funding	0	0
Net cash provided by financing activities	42,608	(15,054)
Net (decrease) increase in cash and equivalents	(4,213)	2,145
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	18,607	52,581	52,581
CASH AND EQUIVALENTS AT END OF PERIOD	14,394	54,726	18,607	52,581
Parent
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(2,905)	(2,961)
INVESTING ACTIVITIES:
Capital expenditures	(1,680)	(2,026)
Proceeds from sale of assets	0	0
Changes in restricted cash	(305)
Net cash used in investing activities	(1,985)	(2,026)
FINANCING ACTIVITIES:
Proceeds from borrowings on senior Credit Agreement	164,000
Principal payments on Senior Credit Agreement	(131,563)
Repurchases of common stock		(15,203)
Exercise of stock options and other	10,124	166
Restricted stock tax withholdings	(609)	(62)
Excess tax benefit from share-based awards	656	64
Principal payments on capital lease obligations		0
Intercompany funding	(37,718)	20,022
Net cash provided by financing activities	4,890	4,987
Net (decrease) increase in cash and equivalents	0	0
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	0	0	0
CASH AND EQUIVALENTS AT END OF PERIOD	0	0
Issuer
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	1,835	1,260
INVESTING ACTIVITIES:
Capital expenditures	0	0
Proceeds from sale of assets	0	0
Changes in restricted cash	0
Net cash used in investing activities	0	0
FINANCING ACTIVITIES:
Proceeds from borrowings on senior Credit Agreement	0
Principal payments on Senior Credit Agreement	0
Repurchases of common stock		0
Exercise of stock options and other	0	0
Restricted stock tax withholdings	0	0
Excess tax benefit from share-based awards	0	0
Principal payments on capital lease obligations		0
Intercompany funding	(1,835)	(1,260)
Net cash provided by financing activities	(1,835)	(1,260)
Net (decrease) increase in cash and equivalents	0	0
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	0	0	0
CASH AND EQUIVALENTS AT END OF PERIOD	0	0
Subsidiary Guarantors
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(17,351)	30,527
INVESTING ACTIVITIES:
Capital expenditures	(27,042)	(9,196)
Proceeds from sale of assets	2,422	1,958
Changes in restricted cash	0
Net cash used in investing activities	(24,620)	(7,238)
FINANCING ACTIVITIES:
Proceeds from borrowings on senior Credit Agreement	0
Principal payments on Senior Credit Agreement	0
Repurchases of common stock		0
Exercise of stock options and other	0	0
Restricted stock tax withholdings	0	0
Excess tax benefit from share-based awards	0	0
Principal payments on capital lease obligations		(19)
Intercompany funding	37,436	(20,737)
Net cash provided by financing activities	37,436	(20,756)
Net (decrease) increase in cash and equivalents	(4,535)	2,533
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	18,166	51,563	51,563
CASH AND EQUIVALENTS AT END OF PERIOD	13,631	54,096
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(272)	(1,110)
INVESTING ACTIVITIES:
Capital expenditures	(1,566)	(1,301)
Proceeds from sale of assets	43	48
Changes in restricted cash	0
Net cash used in investing activities	(1,523)	(1,253)
FINANCING ACTIVITIES:
Proceeds from borrowings on senior Credit Agreement	0
Principal payments on Senior Credit Agreement	0
Repurchases of common stock		0
Exercise of stock options and other	0	0
Restricted stock tax withholdings	0	0
Excess tax benefit from share-based awards	0	0
Principal payments on capital lease obligations		0
Intercompany funding	2,117	1,975
Net cash provided by financing activities	2,117	1,975
Net (decrease) increase in cash and equivalents	322	(388)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	441	1,018	1,018
CASH AND EQUIVALENTS AT END OF PERIOD	763	630
Eliminations and Reclassifications
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	0	0
INVESTING ACTIVITIES:
Capital expenditures	0	0
Proceeds from sale of assets	0	0
Changes in restricted cash	0
Net cash used in investing activities	0	0
FINANCING ACTIVITIES:
Proceeds from borrowings on senior Credit Agreement	0
Principal payments on Senior Credit Agreement	0
Repurchases of common stock		0
Exercise of stock options and other	0	0
Restricted stock tax withholdings	0	0
Excess tax benefit from share-based awards	0	0
Principal payments on capital lease obligations		0
Intercompany funding	0	0
Net cash provided by financing activities	0	0
Net (decrease) increase in cash and equivalents	0	0
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	0	0	0
CASH AND EQUIVALENTS AT END OF PERIOD	$ 0	$ 0