Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 36,616	$ 35,613
Accounts receivable	71,099	41,174
Total Inventories	50,971	44,973
Prepaid expenses and other	19,005	25,729
Total current assets	177,691	147,489
Property, plant and equipment, net	444,075	429,842
Financing lease right-of-use assets, net	12,443	12,905
Advanced coal royalties	3,277	3,271
Other	3,830	2,832
Total Assets	641,316	596,339
Current liabilities
Accounts payable	49,850	34,825
Accrued liabilities	33,070	41,806
Current portion of asset retirement obligations	29	29
Current portion of long-term debt	29,684	35,639
Current portion of related party debt	30,000	40,000
Current portion of financing lease obligations	6,114	5,969
Total current liabilities	151,162	162,845
Asset retirement obligations, net	29,206	28,856
Long-term debt, net	45,567	18,757
Long-term financing lease obligations, net	3,980	4,917
Senior notes, net	32,945	32,830
Deferred tax liability, net	37,791	35,637
Other long-term liabilities	3,742	3,299
Total liabilities	304,393	287,141
Commitments and contingencies
Other current liabilities	2,415	4,577
Stockholders' Equity
Preferred stock, $0.01 par value, 50,000,000 shares authorized, none issued and outstanding
Common stock, $0.01 par value, 260,000,000 shares authorized, 44,418,879 at March 31, 2023 and 44,155,735 at December 31, 2022 shares issued and outstanding	444	442
Additional paid-in capital	171,531	168,711
Retained earnings	164,948	140,045
Total stockholders' equity	336,923	309,198
Total Liabilities and Stockholders' Equity	$ 641,316	$ 596,339