Note 19 - Related Party Transactions (Details Textual) $ in Millions					3 Months Ended
	Oct. 31, 2026	Nov. 01, 2021	Oct. 31, 2021	Nov. 01, 2016 ft²	Mar. 31, 2020 USD ($)
Cash Contribution Committed to Charitable Foundation | $					$ 1.5
CVentures, Inc. [Member]
Area of Real Estate Property (Square Foot) | ft²				5,437
Operating Leases, Yearly Rental Rate Per Rentable Square Foot				26.50
CVentures, Inc. [Member] | Forecast [Member]
Operating Leases, Yearly Rental Rate Per Rentable Square Foot	31.67	29.26	28.68