Note 4 - Mineral Rights and Properties - Mineral Rights and Property Acquisition Costs (Details) - USD ($) $ in Thousands	6 Months Ended
	Jan. 31, 2026	Jul. 31, 2025
Balance	$ 717,233
Additions	715
Impact of foreign currency translation	3,214
Balance	721,162
Balance	(7,582)
Additions	(592)
Impact of foreign currency translation	(2)
Balance	(8,176)
Balance	712,986	$ 709,651
UNITED STATES
Balance	326,192
Additions	715
Balance	326,907
Balance	(7,477)
Additions	(592)
Impact of foreign currency translation	0
Balance	(8,069)
Balance	318,838	318,715
CANADA
Balance	376,027
Additions	0
Impact of foreign currency translation	3,214
Balance	379,241
Balance	(105)
Additions	0
Impact of foreign currency translation	(2)
Balance	(107)
Balance	379,134	375,922
PARAGUAY
Balance	15,014
Additions	0
Balance	15,014
Balance	0
Additions	0
Impact of foreign currency translation	0
Balance	0
Balance	$ 15,014	$ 15,014