Note 14 - Sales and Service Revenue and Cost of Sales and Services - Sales and Service Revenue and Cost of Sales and Service Renue (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2022	Oct. 31, 2021
SALES AND SERVICE REVENUE	$ 57,292	$ 0
COST OF SALES AND SERVICES	(43,434)	0
Gross Profit	13,858	0
Sale of Inventory [Member]
SALES AND SERVICE REVENUE	57,209	0
COST OF SALES AND SERVICES	(43,365)	0
Toll Processing Services [Member]
SALES AND SERVICE REVENUE	83	0
COST OF SALES AND SERVICES	$ (69)	$ 0