The gross cash inflow associated with the amount received from entity's first offering of stock to the public.

No definition available.

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The cash inflow associated with the amount received from entity's first offering of stock to the public, net of offering expenses paid directly by the newly formed entity.

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No definition available.

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Face amount or stated value per share of common stock.

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The cash outflow for cost incurred directly with the issuance of an equity security.

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The cash outflow for the payment of a long-term borrowing made from a related party where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Payments for Advances from Affiliates.

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Per share or per unit amount of equity securities issued.

+ References

No definition available.

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The number of shares issued during the period upon the conversion of units. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit).

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Number of new stock issued during the period.

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Note 1 - Description of Business and Basis of Presentation (Details Textual) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
	Feb. 08, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Common Stock, Par or Stated Value Per Share		$ 0.01	$ 0.01
Payments of Stock Issuance Costs	$ 3,600
Proceeds from Issuance Initial Public Offering, Net of Issuance Costs	43,700
Repayments of Related Party Debt			$ 10,629	$ 918
Notes Payable to Banks [Member] \| Ramaco Carbon, LLC [Member]
Repayments of Related Party Debt	$ 10,700
IPO [Member]
Stock Issued During Period, Shares, New Issues	6,000
Common Stock, Par or Stated Value Per Share	$ 0.01
Shares Issued, Price Per Share	$ 13.50
Proceeds from Issuance Initial Public Offering, Gross	$ 51,300
IPO [Member] \| Conversion of Series A Preferred Units Into Common Stock Upon Reorganization [Member]
Stock Issued During Period, Shares, Conversion of Units	12,760
IPO [Member] \| Common Stock Sold by the Company [Member]
Stock Issued During Period, Shares, New Issues	3,800
IPO [Member] \| Common Stock Sold by the Stockholders [Member]
Stock Issued During Period, Shares, New Issues	2,200