Commitments and Contingencies - Additional Information (Details)	9 Months Ended
Mar. 31, 2026 USD ($) a MiningClaim	Mar. 31, 2026 CAD ($) MiningClaim
Seabridge Gold Inc.
Commitments And Contingencies [Line Items]
Percentage of outstanding common stock	4.24%
Option Agreement \| Nevada
Commitments And Contingencies [Line Items]
Total consideration payable	$ 300,000
Total consideration paid	$ 20,000
Grassy Mountain Project
Commitments And Contingencies [Line Items]
Number of mining fields \| MiningClaim	44	44
Area covered by mining claims \| a	589
Annual lease payment, year one	$ 60,000
Option to purchase mining claims, price	$ 560,000
Term of the agreement	25 years
Operating lease, payments	$ 0
Grassy Mountain Project \| Option Agreement \| Seabridge Gold Inc.
Commitments And Contingencies [Line Items]
Payment to purchase net profit interest		$ 10,000,000
Grassy Mountain Project \| Minimum
Commitments And Contingencies [Line Items]
Royalty rate	2.00%
Grassy Mountain Project \| Maximum
Commitments And Contingencies [Line Items]
Royalty rate	4.00%

Area of mining fields.

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Commitments and contingencies.

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Lessee operating lease liability payments due two thousand eighteen.

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Option to purchase mining claims price.

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- Definition

Payment to purchase net profit interest.

+ References

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- Definition

Payments for contractual obligation.

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Percentage of royalty.

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- Definition

Amount of contractual obligation, including, but not limited to, long-term debt, lease obligation, purchase obligation, and other commitments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477314/942-235-S99-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-Publisher FASB
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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Number of businesses acquired in business combination.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
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- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
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-Subparagraph (c)
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