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Commitments and Contingencies (Details)				3 Months Ended		9 Months Ended		12 Months Ended
	Aug. 29, 2025 USD ($) person	Feb. 13, 2025 USD ($)	Aug. 08, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2025 USD ($) lawsuit shares	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)
Commitment and Contingencies
Off-balance sheet arrangements						$ 0
Settlement payable, current								$ 1,000,000
Settlement payable, long-term						2,000,000		2,000,000
Amount spent on Phase 1 activities in the ASAOC						0	$ 1,900,000
Work performed on early action items						$ 0	$ 1,937,538
Number of lawsuits | lawsuit						2
CWA litigation settlement agreement
Commitment and Contingencies
Settlement amount awarded to other party			$ 5,000,000
Litigation settlement amount payable period			4 years
Review period to request court approval of Dismissal and Settlement Agreement			45 days
CWA settlement expense					$ 5,000,000
Legal expense payment settlement								$ 2,000,000
Settlement payable, current						$ 0
Settlement payable, long-term						2,000,000
Nez Perce Tribe | CWA litigation settlement agreement
Commitment and Contingencies
Settlement amount to be paid to the South Fork Salmon Water Quality Enhancement Fund			$ 4,000,000
Settlement amount to be paid to reimburse other party for legal expenses			$ 1,000,000
Idaho Power Company | Procurement agreement
Commitment and Contingencies
Estimated cost of new equipment		$ 90,200,000
Minimum contractual commitments not requiring approval		1,000,000
Payments for procurement contracts		$ 18,800,000
ATCO Structures & Logistics (USA) Inc. | Supply and installation agreement
Commitment and Contingencies
Capacity of the camp | person	1,010
Amount of the vendor agreement	$ 131,700,000
Initial payments	$ 13,350,000
Related Party | Stibnite Foundation
Commitment and Contingencies
Cash contributions						$ 750,000
Capital commitments payable in common shares | shares						150,000
Cash payment made by the company				$ 0		$ 450,000
Amount of commercial production						500,000
Commencement of final reclamation phase						$ 1,000,000
Percentage of total comprehensive income payable						1.00%
Minimum payments to be made during commercial production						$ 500,000
Mining Claim Assessments
Commitment and Contingencies
Annual assessment obligation						334,800
Option Payments On Other Properties
Commitment and Contingencies
Commitments payable						$ 30,000

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Amount awarded to other party in litigation settlement to be paid to a South Fork Salmon Water Quality Enhancement Fund (the "Fund") to be used by the Nez Perce Tribe to support water quality improvement projects in the South Fork Salmon River watershed.

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