Note 3 - Acquisition of UEX Corporation - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands				3 Months Ended
	Aug. 19, 2022	Jun. 22, 2022	Jun. 21, 2022	Oct. 31, 2022	Apr. 30, 2023	Jul. 31, 2022
UEC shares issued				$ 235,372
Cash and cash equivalents					$ 17,463	$ 32,536
Mineral rights and properties					559,451	181,948
Equity-accounted investment					45,886	24,177
Investment in equity securities					38,361	14,834
Other non-current assets					3,141	3,612
Total assets					722,148	354,247
Asset retirement obligations (Note 11)					18,627	17,276
Deferred tax liabilities					68,273	536
Total liabilities					$ 100,310	$ 27,338
UEX Acquisition [Member]
UEC shares issued	$ 171,271
Fair value of UEX shares acquired by UEC before acquisition	5,830
Acquisition related costs	2,643
Total consideration	192,673	$ 1,914	$ 3,867
Cash and cash equivalents	4,627
Prepaid expenses and deposits	159
Accounts receivable	892
Mineral rights and properties	208,008
Equity-accounted investment	24,502
Investment in equity securities	135
Other non-current assets	118
Total assets	238,441
Accounts payable and accrued liabilities	7,080
Other liabilities	111
Asset retirement obligations (Note 11)	211
Deferred tax liabilities	38,366
Total liabilities	45,768
Total net assets	192,673
UEX Acquisition [Member] | Replacement Options [Member]
Replacement options/warrants issued	4,026
UEX Acquisition [Member] | Replacement Warrants [Member]
Replacement options/warrants issued	$ 8,903