Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Current assets
Cash and cash equivalents	$ 193,846	$ 33,009
Accounts receivable	43,612	73,582
Inventories	81,574	43,358
Prepaid expenses and other	9,695	17,685
Total current assets	328,727	167,634
Property, plant, and equipment, net	489,170	482,019
Financing lease right-of-use assets, net	19,808	12,437
Advanced coal royalties	5,446	4,709
Other	6,504	7,887
Total Assets	849,655	674,686
Current liabilities
Accounts payable	41,675	48,855
Accrued liabilities	58,467	61,659
Current portion of asset retirement obligations	1,035	1,035
Current portion of long-term debt	140	359
Current portion of financing lease obligations	8,966	6,218
Insurance financing liability	283	4,302
Total current liabilities	110,566	122,428
Long-term asset retirement obligations	31,208	30,052
Long-term equipment loans		57
Long-term borrowings on revolving credit facility
Long-term financing lease obligations	10,955	7,517
Senior notes, net	116,316	88,135
Deferred tax liability, net	46,386	56,027
Other long-term liabilities	7,312	7,664
Total liabilities	322,743	311,880
Commitments and contingencies
Stockholders’ Equity
Preferred stock, $0.01 par value, 50,000,000 shares authorized, none issued or outstanding
Additional paid-in capital	509,272	292,739
Retained earnings	17,091	69,534
Total stockholders’ equity	526,912	362,806
Total Liabilities and Stockholders’ Equity	849,655	674,686
Class A Common Stock
Stockholders’ Equity
Common stock value	445	438
Class B Common Stock
Stockholders’ Equity
Common stock value	$ 104	$ 95

The amount outstanding on insurance financing liability.

No definition available.

Name:	metc_InsuranceFinancingLiability
Namespace Prefix:	metc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).