Note 7 - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jan. 31, 2023	Jul. 31, 2022
Net Book Value	$ 19,995	$ 20,234
Plant and Processing Facilities [Member]
Cost	19,099	18,964
Accumulated Depreciation	(1,651)	(1,306)
Net Book Value	17,448	17,658
Mining Equipment [Member]
Cost	2,795	2,777
Accumulated Depreciation	(2,432)	(2,382)
Net Book Value	363	395
Logging Equipment and Vehicles [Member]
Cost	2,729	2,666
Accumulated Depreciation	(1,889)	(1,851)
Net Book Value	840	815
Computer Equipment [Member]
Cost	365	360
Accumulated Depreciation	(330)	(313)
Net Book Value	35	47
Furniture and Fixtures [Member]
Cost	190	190
Accumulated Depreciation	(179)	(177)
Net Book Value	11	13
Buildings [Member]
Cost	298	298
Accumulated Depreciation	(80)	(72)
Net Book Value	218	226
Land [Member]
Cost	1,080	1,080
Accumulated Depreciation	0	0
Net Book Value	1,080	1,080
Property, Plant And Equipment, Excluding Mineral Properties and Rights [Member]
Cost	26,556	26,335
Accumulated Depreciation	(6,561)	(6,101)
Net Book Value	$ 19,995	$ 20,234

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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