Note 14 - Sales and Service Revenue and Cost of Sales and Services (Details Textual) GT in Thousands, $ in Thousands	3 Months Ended
	Oct. 31, 2022 USD ($) lb	Oct. 31, 2021 USD ($) GT
Revenues, Total	$ 57,292	$ 0
Uranium Inventory [Member]
Revenues, Total	$ 57,209
Inventory, Sold During Period, Mass (Pound) | lb	500,000
Toll Processing Services [Member]
Revenues, Total	$ 83
Inventory, Sold During Period, Mass (Pound) | GT		0