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Mineral Rights and Properties, Net - Summary of Mineral Rights and Properties, Net (Detail) - USD ($) $ in Thousands		Sep. 30, 2023	Jun. 30, 2023
Mineral Properties Net [Line Items]
Mineral rights and properties, net		$ 7,632	$ 7,637
Mineral properties [Member]
Mineral Properties Net [Line Items]
Mineral rights and properties, net		6,733	6,733
Hydrology Wells [Member]
Mineral Properties Net [Line Items]
Mineral rights and properties, net		547	547
Asset Retirement Cost [Member]
Mineral Properties Net [Line Items]
Mineral rights and properties, net	[1]	$ 352	$ 357
[1] Asset retirement costs represent the carrying value of capitalized costs associated with asset retirement obligations discussed in Note 5.

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- Definition

Mineral properties net.

+ References

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- Definition

Mineral properties, net of adjustments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-SubTopic 10
-Topic 360
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482099/360-10-50-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 932
-SubTopic 360
-Name Accounting Standards Codification
-Section 25
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482479/932-360-25-7

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