Note 16 - Segmented Information - Long-term Assets by Geographic Segments (Details) - USD ($) $ in Thousands	Oct. 31, 2022	Jul. 31, 2022	Oct. 31, 2021
Mineral rights and properties	$ 558,366	$ 181,948
Property, Plant and Equipment	20,116	20,234
Restricted Cash	7,251	7,251	$ 2,038
Equity accounted investment	46,073	24,177
Investment in Equity Securities	5,666	14,834
Other non-current assets	3,120	3,612
Total Long-Term Assets	640,592	252,056
United States Texas [Member]
Mineral rights and properties	12,419	12,420
Property, Plant and Equipment	7,133	7,068
Restricted Cash	1,949	1,949
Equity accounted investment	0	0
Investment in Equity Securities	0	0
Other non-current assets	1,223	1,447
Total Long-Term Assets	22,724	22,884
United States Arizona [Member]
Mineral rights and properties	4,728	4,727
Property, Plant and Equipment	0	0
Restricted Cash	15	15
Equity accounted investment	0	0
Investment in Equity Securities	0	0
Other non-current assets	0	0
Total Long-Term Assets	4,743	4,742
United States Wyoming [Member]
Mineral rights and properties	148,720	148,720
Property, Plant and Equipment	12,585	12,773
Restricted Cash	5,287	5,287
Equity accounted investment	0	0
Investment in Equity Securities	0	0
Other non-current assets	1,618	1,646
Total Long-Term Assets	168,210	168,426
United States Other States [Member]
Mineral rights and properties	85	85
Property, Plant and Equipment	0	0
Restricted Cash	0	0
Equity accounted investment	0	0
Investment in Equity Securities	0	0
Other non-current assets	0	0
Total Long-Term Assets	85	85
CANADA
Mineral rights and properties	377,400	982
Property, Plant and Equipment	32	26
Restricted Cash	0	0
Equity accounted investment	46,073	24,177
Investment in Equity Securities	5,666	14,834
Other non-current assets	279	519
Total Long-Term Assets	429,450	40,538
PARAGUAY
Mineral rights and properties	15,014	15,014
Property, Plant and Equipment	366	367
Restricted Cash	0	0
Equity accounted investment	0	0
Investment in Equity Securities	0	0
Other non-current assets	0	0
Total Long-Term Assets	$ 15,380	$ 15,381