Fair Value Measurements - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Provisional metal sales contracts - Fair Value, Recurring - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Liabilities:
Embedded Derivative, Fair Value of Embedded Derivative Asset	$ 1,803	$ 222
Fair Value of Derivative Liability	61	70
Level 1
Liabilities:
Embedded Derivative, Fair Value of Embedded Derivative Asset	0	0
Fair Value of Derivative Liability	0	0
Level 2
Liabilities:
Embedded Derivative, Fair Value of Embedded Derivative Asset	1,803	222
Fair Value of Derivative Liability	61	70
Level 3
Liabilities:
Embedded Derivative, Fair Value of Embedded Derivative Asset	0	0
Fair Value of Derivative Liability	$ 0	$ 0

Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A

Name:	us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant