Note 16 - Segmented Information - Schedule of Revenue, Total Assets, and Long-term Assets by Geographic Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024	Jul. 31, 2024
Revenue	$ 49,750	$ 116	$ 66,837	$ 224
Depreciation, amortization, and accretion	1,045	552	1,643	1,069
Loss from equity-accounted investment	(991)	192	(1,467)	1,652
Interest income	1,201	352	2,326	566
Loss before income taxes	(11,662)	3,253	(33,158)	3,769
Total expenditures for additions to long-lived assets	191,504	559	192,836	2,328
Total assets	981,957		981,957		$ 889,828
EQUITY-ACCOUNTED INVESTMENTS	55,181		55,181		58,809
Long-lived assets other than financial instruments	763,104		763,104		581,991
Operating Segments [Member] | Mining, Wyoming [Member]
Revenue	0	116	0	224
Depreciation, amortization, and accretion	864	391	1,288	777
Loss from equity-accounted investment	0	0	0	0
Interest income	0	0	0	0
Loss before income taxes	(11,348)	(2,876)	(17,638)	(5,395)
Total expenditures for additions to long-lived assets	190,645	242	191,333	242
Total assets	364,988		364,988		169,740
EQUITY-ACCOUNTED INVESTMENTS	0		0		0
Long-lived assets other than financial instruments	352,372		352,372		162,816
Operating Segments [Member] | Mining, Texas [Member]
Revenue	0	0	0	0
Depreciation, amortization, and accretion	139	135	272	256
Loss from equity-accounted investment	0	0	0	0
Interest income	0	0	0	0
Loss before income taxes	(4,270)	(2,864)	(8,891)	(5,177)
Total expenditures for additions to long-lived assets	807	10	1,178	28
Total assets	24,812		24,812		23,776
EQUITY-ACCOUNTED INVESTMENTS	0		0		0
Long-lived assets other than financial instruments	21,574		21,574		21,028
Operating Segments [Member] | Mining, Saskatchewan [Member]
Revenue	0	0	0	0
Depreciation, amortization, and accretion	39	23	75	29
Loss from equity-accounted investment	0	0	0	0
Interest income	0	0	0	0
Loss before income taxes	(1,507)	(3,634)	(5,948)	(5,686)
Total expenditures for additions to long-lived assets	0	254	273	1,986
Total assets	369,361		369,361		378,368
EQUITY-ACCOUNTED INVESTMENTS	0		0		0
Long-lived assets other than financial instruments	368,544		368,544		377,550
Operating Segments [Member] | Mining, Others [Member]
Revenue	0	0	0	0
Depreciation, amortization, and accretion	1	1	4	2
Loss from equity-accounted investment	0	0	0	0
Interest income	0	0	0	0
Loss before income taxes	(379)	(45)	(850)	(486)
Total expenditures for additions to long-lived assets	52	53	52	69
Total assets	20,816		20,816		20,789
EQUITY-ACCOUNTED INVESTMENTS	0		0		0
Long-lived assets other than financial instruments	20,446		20,446		20,397
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Revenue	49,750	0	66,837	0
Depreciation, amortization, and accretion	2	2	4	5
Loss from equity-accounted investment	(991)	192	(1,467)	1,652
Interest income	1,201	352	2,326	566
Loss before income taxes	5,842	12,672	169	20,513
Total expenditures for additions to long-lived assets	0	$ 0	0	$ 3
Total assets	201,980		201,980		297,155
EQUITY-ACCOUNTED INVESTMENTS	55,181		55,181		58,809
Long-lived assets other than financial instruments	$ 168		$ 168		$ 200