Carrying amount as of the balance sheet date of obligations due all related parties.

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

Note 10 - Related Party Transactions (Details) - Ramaco Coal, LLC - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Share the services
RELATED PARTY TRANSACTIONS
Due to Related Parties, Total	$ 1.2		$ 1.3
Accounts Payable and Accrued Liabilities \| Mineral Lease and Surface Rights Agreements
RELATED PARTY TRANSACTIONS
Due to Related Parties, Total	$ 0.4	$ 0.5