Note 15 - Segmented Information - Schedule of Revenue, Total Assets, and Long-term Assets by Geographic Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Jul. 31, 2024
Revenue	$ 17,087	$ 108
Depreciation, amortization, and accretion	598	517
Loss from equity-accounted investment	(476)	1,459
Interest income	1,124	214
Loss before income taxes	(21,495)	515
Total expenditures for additions to long-lived assets	1,333	1,769
Total assets	917,798		$ 889,828
EQUITY-ACCOUNTED INVESTMENTS	58,438		58,809
Long-lived assets other than financial instruments	580,371		581,991
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Revenue	17,087	0
Depreciation, amortization, and accretion	2	3
Loss from equity-accounted investment	(476)	1,459
Interest income	1,124	214
Loss before income taxes	(5,673)	7,841
Total expenditures for additions to long-lived assets	0	3
Total assets	323,138		297,155
EQUITY-ACCOUNTED INVESTMENTS	58,438		58,809
Long-lived assets other than financial instruments	189		200
Mining, Wyoming [Member] | Operating Segments [Member]
Revenue	0	108
Depreciation, amortization, and accretion	424	386
Loss from equity-accounted investment	0	0
Interest income	0	0
Loss before income taxes	(6,289)	(2,520)
Total expenditures for additions to long-lived assets	688	0
Total assets	171,700		169,740
EQUITY-ACCOUNTED INVESTMENTS	0		0
Long-lived assets other than financial instruments	162,472		162,816
Mining, Texas [Member] | Operating Segments [Member]
Revenue	0	0
Depreciation, amortization, and accretion	133	121
Loss from equity-accounted investment	0	0
Interest income	0	0
Loss before income taxes	(4,621)	(2,313)
Total expenditures for additions to long-lived assets	372	18
Total assets	24,064		23,776
EQUITY-ACCOUNTED INVESTMENTS	0		0
Long-lived assets other than financial instruments	21,050		21,028
Mining, Saskatchewan [Member] | Operating Segments [Member]
Revenue	0	0
Depreciation, amortization, and accretion	36	6
Loss from equity-accounted investment	0	0
Interest income	0	0
Loss before income taxes	(4,441)	(2,052)
Total expenditures for additions to long-lived assets	273	1,732
Total assets	378,066		378,368
EQUITY-ACCOUNTED INVESTMENTS	0		0
Long-lived assets other than financial instruments	376,264		377,550
Mining, Others [Member] | Operating Segments [Member]
Revenue	0	0
Depreciation, amortization, and accretion	3	1
Loss from equity-accounted investment	0	0
Interest income	0	0
Loss before income taxes	(471)	(441)
Total expenditures for additions to long-lived assets	0	$ 16
Total assets	20,830		20,789
EQUITY-ACCOUNTED INVESTMENTS	0		0
Long-lived assets other than financial instruments	$ 20,396		$ 20,397