Note 4 - Mineral Rights and Properties - Mineral Property Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2026	Jan. 31, 2025
Permitting and land payments	$ 2,709	$ 1,556	$ 4,065	$ 3,095
Extraction readiness and mine site maintenance	2,359	4,180	4,762	6,556
Exploration	4,323	923	8,040	5,840
Development	14,289	7,584	27,733	12,266
Total	$ 23,680	$ 14,243	$ 44,600	$ 27,757

Amount of mineral property expenditures.

No definition available.

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Data Type:	xbrli:monetaryItemType
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- Definition

Amount of permitting and land payments.

+ References

No definition available.

+ Details

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- Definition

Amount of capitalized development cost incurred during period and excluded from amortization for oil- and gas-producing activities accounted for under full cost method. Excludes acquisition and exploration costs and capitalized interest.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 932
-SubTopic 360
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477385/932-360-S50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 932
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-10(c)(7)(ii))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479664/932-10-S99-1

+ Details

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- Definition

Amount of capitalized exploration cost incurred during period and excluded from amortization for oil- and gas-producing activities accounted for under full cost method. Excludes acquisition and development costs and capitalized interest.

+ References

+ Details

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- Definition

Amount of capitalized production cost incurred during period for oil- and gas-producing activities. Includes cost incurred to operate and maintain well and related equipment and facility.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 932
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-10(a)(20))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479664/932-10-S99-1

+ Details

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Period Type:	duration