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Description of the frequency of periodic payments (monthly, quarterly, annual).

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Contractual interest rate for funds borrowed, under the debt agreement.

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Note 7 - Debt - Ramaco Coal Deferred Purchase Price (Detail) $ in Thousands				1 Months Ended	12 Months Ended
	Feb. 15, 2023	Sep. 23, 2022 USD ($)	Apr. 29, 2022 USD ($) installment	Jan. 31, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Debt
Outstanding principal amount					$ 88,551	$ 90,179
Current portion of long-term debt					359	$ 56,534
Weighted average interest rate						7.40%
Long-term Debt, Total					92,416
Maben Coal LLC
Debt
Voting interest acquired		100.00%
Maben Coal LLC
Debt
Outstanding principal amount						$ 11,400
Current portion of long-term debt						11,400
Equipment loans
Debt
Outstanding principal amount					416	2,983
Current portion of long-term debt					$ 400	2,600
Weighted average interest rate					4.70%
Insurance financing
Debt
Repayment of outstanding principal balance					$ 5,800
Unamortized Asset Balance with Insurance Premiums					$ 4,300
Term of debt					1 year
Revolving Credit Facility
Debt
Outstanding principal amount						42,500
Repayment of outstanding principal balance					$ 42,500
Current portion of long-term debt						42,500
Revolving Credit Facility \| Secured Overnight Financing Rate (SOFR) [Member]
Debt
Interest rate, basis spread	2.50%
Revolving Credit Facility \| Base Rate [Member]
Debt
Interest rate, basis spread	2.00%
Financing of Ramaco Coal acquisition - Related party debt
Debt
Aggregate principal amount			$ 55,000
Interest rate			9.00%
Number of installments \| installment			7
Frequency of periodic payment			quarterly
Outstanding principal amount							$ 40,000
Repayment of outstanding principal balance						40,000
Financing of Ramaco Coal acquisition - Related party debt \| 2022
Debt
Amount paid per installment			$ 5,000
Financing of Ramaco Coal acquisition - Related party debt \| 2023.
Debt
Amount paid per installment			$ 10,000
Financing of Maben Coal acquisition \| Secured Overnight Financing Rate (SOFR) [Member]
Debt
Interest rate, basis spread		3.00%
Investec Bank PLC \| Financing of Maben Coal acquisition
Debt
Aggregate principal amount		$ 21,000				$ 11,400
Frequency of periodic payment				monthly
Repayment of outstanding principal balance					$ 11,400
Amount of monthly installments until maturity				$ 800,000