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

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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Subparagraph (SX 210.7-03.17)
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Note 12 - Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Royalties paid				$ 2.3
Ramaco Coal, LLC
Royalties paid	$ 1.5	$ 1.1	$ 2.6
Ramaco Coal, LLC \| Accounts Payable and Accrued Liabilities \| Mineral Lease and Surface Rights Agreements
Due to Related Parties, Total	$ 0.4		$ 0.4		$ 0.4