Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
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-Section 50
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-URI https://asc.fasb.org/1943274/2147482861/275-10-50-20

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
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-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
-SubTopic 10
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-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 275
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-Name Accounting Standards Codification
-Section 50
-Paragraph 18
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-18

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 275
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
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-Section 50
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-URI https://asc.fasb.org/1943274/2147482861/275-10-50-20

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
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-URI https://asc.fasb.org/1943274/2147478785/954-310-50-2

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Balance Type:	na
Period Type:	duration

Concentration of Credit Risk and Major Customers - Narrative (Details)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Exporters Concentration Risk \| Revenue Benchmark \| Non-US
Concentration Risk [Line Items]
Concentration risk percentage	56.00%	66.00%	71.00%
Geographic Concentration Risk \| Revenue Benchmark \| United States
Concentration Risk [Line Items]
Concentration risk percentage	40.00%	30.00%	30.00%
Geographic Concentration Risk \| Revenue Benchmark \| Coal Revenue \| United States
Concentration Risk [Line Items]
Concentration risk percentage	44.00%	34.00%	29.00%
Customer Concentration Risk \| Revenue Benchmark \| Two Customers
Concentration Risk [Line Items]
Concentration risk percentage		22.00%	23.00%
Customer Concentration Risk \| Accounts Receivable \| One Customer
Concentration Risk [Line Items]
Concentration risk percentage	10.00%
Customer Concentration Risk \| Accounts Receivable \| Two Customers
Concentration Risk [Line Items]
Concentration risk percentage		10.00%