Note 5 - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jan. 31, 2024	Jul. 31, 2023
Cost	$ 27,657	$ 26,740
Accumulated Depreciation	(7,585)	(7,012)
Net Book Value	20,072	19,728
Plant and Processing Facilities [Member]
Cost	19,347	19,145
Accumulated Depreciation	(2,348)	(1,998)
Net Book Value	16,999	17,147
Mining Equipment [Member]
Cost	3,501	2,915
Accumulated Depreciation	(2,560)	(2,478)
Net Book Value	941	437
Logging Equipment and Vehicles [Member]
Cost	2,838	2,799
Accumulated Depreciation	(2,111)	(1,989)
Net Book Value	727	810
Computer Equipment [Member]
Cost	309	306
Accumulated Depreciation	(288)	(280)
Net Book Value	21	26
Furniture and Fixtures [Member]
Cost	244	198
Accumulated Depreciation	(183)	(180)
Net Book Value	61	18
Buildings [Member]
Cost	338	297
Accumulated Depreciation	(95)	(87)
Net Book Value	243	210
Land [Member]
Cost	1,080	1,080
Accumulated Depreciation	0	0
Net Book Value	$ 1,080	$ 1,080