Note 5 - Acquisition of Uranium One Americas, Inc. (Details Textual) - USD ($) $ in Thousands			12 Months Ended
		Dec. 17, 2021	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2022
Business Combination, Acquisition Related Costs			$ 0	$ 0	$ 3,444
U1A Acquisition [Member]
Business Combination, Consideration Transferred		$ 128,495			128,495
Business Combination, Acquisition Related Costs					3,444
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	[1]				1,183
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets	[1]				1,550
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other	[1]				73
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory	[1]				192
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable and Accrued Liabilities	[1]				96
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual					15,616
Business Combination, Pro Forma Information, Operating Costs of Acquiree since Acquisition Date, Actual					$ 4,206

[1] The working capital adjustment represents the working capital of U1A at the date of the U1A Acquisition, which was comprised of: (i) cash and cash equivalents of $1,183; (ii) prepaid expenses and deposits of $1,550; (iii) other current assets of $73; (iv) inventories of $192; and (v) accounts payable and accrued liabilities of $96. The fair value of these working capital items approximates their respective carrying values at the date of the acquisition.