Note 8 - Mineral Rights and Properties - Mineral Rights and Property Acquisition Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2024	Jul. 31, 2023
Balance	$ 572,061	$ 188,336
Additions	1,440	386,662
Impact of foreign currency translation	(9,424)	(2,937)
Balance	564,077	572,061
Balance	(6,501)	(6,388)
Additions		(1)
Impairment		(112)
Impact of foreign currency translation	7
Balance	(6,494)	(6,501)
Balance	565,560
Balance	557,583	565,560
UNITED STATES
Balance	172,440	172,340
Additions	100	100
Impact of foreign currency translation	0
Balance	172,540	172,440
Balance	(6,389)	(6,388)
Additions		(1)
Impairment		0
Balance	(6,389)	(6,389)
Balance	166,051
Balance	166,151	166,051
CANADA
Balance	384,607	982
Additions	1,340	386,562
Impact of foreign currency translation	(9,424)	(2,937)
Balance	376,523	384,607
Balance	(112)	0
Additions		0
Impairment		(112)
Impact of foreign currency translation	7
Balance	(105)	(112)
Balance	384,495
Balance	376,418	384,495
PARAGUAY
Balance	15,014	15,014
Additions	0	0
Impact of foreign currency translation	0
Balance	15,014	15,014
Balance	0	0
Additions		0
Impairment		0
Balance	0	0
Balance	15,014
Balance	$ 15,014	$ 15,014