Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Current assets
Cash and cash equivalents	$ 43,466	$ 33,009
Accounts receivable	52,122	73,582
Inventories	56,123	43,358
Prepaid expenses and other	12,256	17,685
Total current assets	163,967	167,634
Property, plant, and equipment, net	487,872	482,019
Financing lease right-of-use assets, net	19,679	12,437
Advanced coal royalties	5,129	4,709
Other	9,088	7,887
Total Assets	685,735	674,686
Current liabilities
Accounts payable	59,496	48,855
Accrued liabilities	53,851	61,659
Current portion of asset retirement obligations	1,035	1,035
Current portion of long-term debt	307	359
Current portion of financing lease obligations	7,307	6,218
Insurance financing liability	2,365	4,302
Total current liabilities	124,361	122,428
Long-term asset retirement obligations	30,454	30,052
Long-term equipment loans		57
Long-term borrowings on revolving credit facility	16,000
Long-term financing lease obligations	13,203	7,517
Senior notes, net	88,356	88,135
Deferred tax liability, net	51,359	56,027
Other long-term liabilities	6,754	7,664
Total liabilities	330,487	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	306,312	292,739
Retained earnings	48,389	69,534
Total stockholders' equity	355,248	362,806
Total Liabilities and Stockholders' Equity	685,735	674,686
Class A Common Stock
Stockholders' Equity
Common stock	444	438
Class B Common Stock
Stockholders' Equity
Common stock	$ 103	$ 95