Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 41,962	$ 35,613
Accounts receivable	96,866	41,174
Inventories	37,163	44,973
Prepaid expenses and other	13,748	25,729
Total current assets	189,739	147,489
Property, plant, and equipment, net	459,091	429,842
Financing lease right-of-use assets, net	10,282	12,905
Advanced coal royalties	2,964	3,271
Other	3,760	2,832
Total Assets	665,836	596,339
Current liabilities
Accounts payable	51,624	34,825
Accrued liabilities	52,225	41,806
Current portion of asset retirement obligations	110	29
Current portion of long-term debt	56,534	35,639
Current portion of related party debt		40,000
Current portion of financing lease obligations	5,456	5,969
Insurance financing liability	4,037	4,577
Total current liabilities	169,986	162,845
Asset retirement obligations, net	28,850	28,856
Long-term debt, net	349	18,757
Long-term financing lease obligations, net	4,915	4,917
Senior notes, net	33,296	32,830
Deferred tax liability, net	54,352	35,637
Other long-term liabilities	4,483	3,299
Total liabilities	296,231	287,141
Commitments and contingencies
Stockholders' Equity
Preferred stock, $0.01 par value, 50,000,000 shares authorized, none issued or outstanding
Common stock		442
Additional paid-in capital	277,133	168,711
Retained earnings	91,944	140,045
Total stockholders' equity	369,605	309,198
Total Liabilities and Stockholders' Equity	665,836	$ 596,339
Class A Common Stock
Stockholders' Equity
Common stock	440
Class B Common Stock
Stockholders' Equity
Common stock	$ 88