Defined Contribution Plans (Details Narrative) - USD ($) $ in Millions		12 Months Ended
	May 27, 2021	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021
Employment period contributions, description		first five years
Defined contribution plan, cost		$ 1.1	$ 1.0	$ 0.8
Common Class B [Member]
Stock issued during period, shares, new issues	35,839
Stock issued during period, value, new issues	$ 1.0