Stock Compensation Plans - Additional Information (Details) - shares				12 Months Ended
	Aug. 12, 2020	Aug. 08, 2019	Aug. 04, 2016	Jan. 30, 2021
Non Employee Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for grant				1,000,000
Percentage of annual retainer				50.00%
Number of shares issued limit by each quarter				250,000
Percentage of removal of annual retainer				50.00%
2016 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserve, shares			5,725,538
Reduction in outstanding reserve for share granted			1.00%
Reduction in outstanding reserve for share granted, full-value award			1.90%
Shares available for grant				1,456,300
Number of additional shares authorized to increase share reserve	1,740,000	2,800,000
Share-based compensation arrangement by share-based payment award, description				In accordance with the terms of the 2016 Plan, any shares outstanding under the previous 2006 Incentive Compensation Plan (the “2006 Plan”) at August 4, 2016 that subsequently terminate, expire or are cancelled for any reason without having been exercised or paid are added back and become available for issuance under the 2016 Plan, with stock options being added back on a one-for-one basis and full-value awards being added back on a 1 to 1.9 basis.  At January 30, 2021, there are 435,368 stock options that remain outstanding under the 2006 Plan
Percent of shares available for awards			5.00%
Share-based compensation description				Except with respect to 5% of the shares available for awards under the 2016 Plan, no award will become exercisable or otherwise forfeitable unless such award has been outstanding for a minimum period of one year from its date of grant.
2006 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option outstanding				435,368