Note 4 - Inventories (Details Textual)	2 Months Ended	6 Months Ended
	Mar. 16, 2022 USD ($) lb	Jan. 31, 2022 USD ($) lb	Jan. 31, 2021 USD ($)
Increase (Decrease) in Inventories, Total | $		$ 10,867,495	$ (0)
Uranium Inventory [Member]
Inventory, Increase from Purchases, Mass (Pound) | lb		600,000
Increase in Purchase Obligations, Mass (Pound) | lb		700,000
Purchase Obligation, Total | $		$ 96,877,250
Uranium Inventory [Member] | Subsequent Event [Member]
Inventory, Increase from Purchases, Mass (Pound) | lb	200,000
Increase in Purchase Obligations, Mass (Pound) | lb	700,000
Increase (Decrease) in Inventories, Total | $	$ 6,000,000
Purchase Obligation, Total | $	$ 35,570,000