Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 27,571	$ 41,962
Accounts receivable	69,613	96,866
Inventories	52,396	37,163
Prepaid expenses and other	11,053	13,748
Total current assets	160,633	189,739
Property, plant, and equipment, net	474,516	459,091
Financing lease right-of-use assets, net	14,265	10,282
Advanced coal royalties	3,460	2,964
Other	6,354	3,760
Total Assets	659,228	665,836
Current liabilities
Accounts payable	47,863	51,624
Accrued liabilities	58,021	52,225
Current portion of asset retirement obligations	110	110
Current portion of long-term debt	7,198	56,534
Current portion of financing lease obligations	7,145	5,456
Insurance financing liability	439	4,037
Total current liabilities	120,776	169,986
Asset retirement obligations, net	29,455	28,850
Long-term debt, net	42,155	349
Long-term financing lease obligations, net	7,506	4,915
Senior notes, net	33,529	33,296
Deferred tax liability, net	54,740	54,352
Other long-term liabilities	4,941	4,483
Total liabilities	293,102	296,231
Commitments and contingencies
Stockholders' Equity
Preferred stock, $0.01 par value, 50,000,000 shares authorized, none issued or outstanding
Additional paid-in capital	276,734	277,133
Retained earnings	88,868	91,944
Total stockholders' equity	366,126	369,605
Total Liabilities and Stockholders' Equity	659,228	665,836
Class A Common Stock
Stockholders' Equity
Common stock	437	440
Class B Common Stock
Stockholders' Equity
Common stock	$ 87	$ 88