Note 9 - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jul. 31, 2023	Jul. 31, 2022
Cost	$ 26,740	$ 26,335
Accumulated Depreciation	(7,012)	(6,101)
Net Book Value	19,728	20,234
Plant and Processing Facilities [Member]
Cost	19,145	18,964
Accumulated Depreciation	(1,998)	(1,306)
Net Book Value	17,147	17,658
Mining Equipment [Member]
Cost	2,915	2,777
Accumulated Depreciation	(2,478)	(2,382)
Net Book Value	437	395
Logging Equipment and Vehicles [Member]
Cost	2,799	2,666
Accumulated Depreciation	(1,989)	(1,851)
Net Book Value	810	815
Computer Equipment [Member]
Cost	306	360
Accumulated Depreciation	(280)	(313)
Net Book Value	26	47
Furniture and Fixtures [Member]
Cost	198	190
Accumulated Depreciation	(180)	(177)
Net Book Value	18	13
Buildings [Member]
Cost	297	298
Accumulated Depreciation	(87)	(72)
Net Book Value	210	226
Land [Member]
Cost	1,080	1,080
Accumulated Depreciation	0	0
Net Book Value	$ 1,080	$ 1,080