Fair Value Measurements (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands		Aug. 02, 2019	Aug. 03, 2018
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Abstract]
Cash equivalents	[1]	$ 46	$ 38,446
Interest rate swap asset (see Note 7)		0	6,255
Total		46	44,701
Deferred compensation plan assets	[2]	30,593	32,669
Total assets at fair value		30,639	77,370
Interest rate swap liability (see Note 7)		10,483	0
Total liabilities at fair value		10,483	0
Level 1 [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Abstract]
Cash equivalents	[1]	46	38,446
Interest rate swap asset (see Note 7)		0	0
Total		46	38,446
Interest rate swap liability (see Note 7)		0	0
Total liabilities at fair value		0	0
Level 2 [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Abstract]
Cash equivalents	[1]	0	0
Interest rate swap asset (see Note 7)		0	6,255
Total		0	6,255
Interest rate swap liability (see Note 7)		10,483	0
Total liabilities at fair value		10,483	0
Level 3 [Member]
Assets and Liabilities Measured at Fair Value on a Recurring Basis [Abstract]
Cash equivalents	[1]	0	0
Interest rate swap asset (see Note 7)		0	0
Total		0	0
Interest rate swap liability (see Note 7)		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).