Share-Based Compensation, Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 28, 2023	Jul. 29, 2022	Jul. 30, 2021
Compensation Expense [Abstract]
Total compensation expense	$ 9,045	$ 8,198	$ 8,729
Total unrecognized compensation expense and weighted-average periods over which the expense is expected to be recognized [Abstract]
Number of shares issued from vesting of share-based compensation awards (in shares)	43,974
Tax withholding payment net of cash received from issuance of share based compensation awards	$ (2,448)	$ (2,599)	$ (2,282)
Nonvested Stock Awards [Member]
Total unrecognized compensation expense and weighted-average periods over which the expense is expected to be recognized [Abstract]
Total unrecognized compensation	$ 8,038
Weighted average period in years	1 year 9 months 25 days