Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	Aug. 02, 2013		Aug. 03, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 57,767	[1]	$ 104,531	[1]
Interest rate swap asset (see Note 6)	883		0
Deferred compensation plan assets	25,263	[2]	29,443	[2]
Total assets at fair value	83,913		133,974
Interest rate swap liability (see Note 6)	11,644		34,381
Total liabilities at fair value	11,644		34,381
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	57,767	[1]	104,531	[1]
Interest rate swap asset (see Note 6)	0		0
Deferred compensation plan assets	25,263	[2]	29,443	[2]
Total assets at fair value	83,030		133,974
Interest rate swap liability (see Note 6)	0		0
Total liabilities at fair value	0		0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	[1]	0	[1]
Interest rate swap asset (see Note 6)	883		0
Deferred compensation plan assets	0	[2]	0	[2]
Total assets at fair value	883		0
Interest rate swap liability (see Note 6)	11,644		34,381
Total liabilities at fair value	11,644		34,381
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	0	[1]	0	[1]
Interest rate swap asset (see Note 6)	0		0
Deferred compensation plan assets	0	[2]	0	[2]
Total assets at fair value	0		0
Interest rate swap liability (see Note 6)	0		0
Total liabilities at fair value	$ 0		$ 0

[1] Consists of money market fund investments.

[2] Represents plan assets invested in mutual funds established under a Rabbi Trust for the Company's non-qualified savings plan and is included in the Consolidated Balance Sheets as other assets (see Note 13).