Note 23 - Segmented Information - Long-term Assets by Geographic Segments (Details) - USD ($) $ in Thousands	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021
Mineral rights and properties	$ 565,560	$ 181,948
Property, Plant and Equipment	19,728	20,234
Restricted Cash	7,251	7,251	$ 2,038
Equity-accounted investment	48,110	24,177
Investment in Equity Securities	38,656	14,834
Other non-current assets	3,079	3,612
United States Texas [Member]
Mineral rights and properties	166,051	165,952
Property, Plant and Equipment	19,221	19,841
Restricted Cash	7,251	7,251
Equity-accounted investment	0	0
Investment in Equity Securities	0	0
Other non-current assets	2,965	3,093
Total Long-Term Assets	195,488	196,137
United States Arizona [Member]
Mineral rights and properties	384,495	982
Property, Plant and Equipment	145	26
Restricted Cash	0	0
Equity-accounted investment	48,110	24,177
Investment in Equity Securities	38,656	14,834
Other non-current assets	114	519
Total Long-Term Assets	471,520	40,538
United States Wyoming [Member]
Mineral rights and properties	15,014	15,014
Property, Plant and Equipment	362	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	15,376	15,381
United States Other States [Member]
Mineral rights and properties	565,560	181,948
Property, Plant and Equipment	19,728	20,234
Restricted Cash	7,251	7,251
Equity-accounted investment	48,110	24,177
Investment in Equity Securities	38,656	14,834
Other non-current assets	3,079	3,612
Total Long-Term Assets	$ 682,384	$ 252,056