Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue	$ 693,524	$ 565,688	$ 283,394
Costs and expenses
Cost of sales (exclusive of items shown separately below)	493,793	332,960	195,412
Asset retirement obligations accretion	1,403	1,115	615
Depreciation, depletion, and amortization	54,252	41,194	26,205
Selling, general, and administrative	48,831	40,032	21,629
Total costs and expenses	598,279	415,301	243,861
Operating income	95,245	150,387	39,533
Other income (expense), net	18,321	2,637	7,429
Interest expense, net	(8,903)	(6,829)	(2,556)
Income before tax	104,663	146,195	44,406
Income tax expense	22,350	30,153	4,647
Net income	$ 82,313	$ 116,042	$ 39,759
Earnings per share
Basic (in dollars per share)	$ 1.77	$ 2.63	$ 0.90
Diluted (in dollars per share)	$ 1.73	$ 2.60	$ 0.90