Debt (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Nov. 02, 2012	Aug. 03, 2012
Debt Instrument [Line Items]
Long-term debt, gross	$ 525,116	$ 525,142
Current maturities	(6,357)	(106)
Long-term debt	518,759	525,036	[1]
Line of credit facility, expiration date	Jul. 08, 2016
Weighted average interest rates of the Company's swapped term loans (in hundredths)	7.32%
Restrictions on dividends payable	The Credit Facility also imposes restrictions on the amount of dividends the Company is permitted to pay. If there is no default existing and the total of the Company's availability under the Revolving Credit Facility plus the Company's cash and cash equivalents on hand is at least $100,000 (the "liquidity requirements"), the Company may declare and pay cash dividends on shares of its common stock if the aggregate amount of dividends paid in any fiscal year is less than 20% of Consolidated EBITDA from continuing operations (as defined in the Credit Facility) (the "20% limitation") during the immediately preceding fiscal year. In any event, as long as the liquidity requirements are met, dividends may be declared and paid in any fiscal year up to the amount of dividends permitted and paid in the preceding fiscal year without regard to the 20% limitation.
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt, gross	312,500	312,500
Maximum borrowing capacity	500,000
Amount of standby letters of credit	28,171
Current borrowing capacity	159,329
Term Loans Payable [Member]
Debt Instrument [Line Items]
Long-term debt, gross	212,500	212,500
Maturity date	Jul. 08, 2016
Notes Payable [Member]
Debt Instrument [Line Items]
Term of debt instrument	5 years
Long-term debt, gross	116	142
Maturity date	Oct. 16, 2013
Original principal amount of notes payable	507
Monthly installment of principal and interest on notes payable	9
Interest rate during the period (in hundredths)	2.88%
Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	750,000
Liquidity requirements	$ 100,000
Dividend limitation (in hundredths)	20.00%

[1] This Condensed Consolidated Balance Sheet has been derived from the audited Consolidated Balance Sheet as of August 3, 2012, as filed in the Company's Annual Report on Form 10-K for the fiscal year ended August 3, 2012.