Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenue	$ 172,676	$ 166,360
Costs and expenses
Cost of sales (exclusive of items shown separately below)	139,713	110,549
Asset retirement obligations accretion	354	350
Depreciation, depletion, and amortization	15,220	11,852
Selling, general, and administrative	14,114	11,742
Total costs and expenses	169,401	134,493
Operating income	3,275	31,867
Other income (expense), net	629	1,247
Interest expense, net	(1,332)	(2,309)
Income before tax	2,572	30,805
Income tax expense	540	5,548
Net income	$ 2,032	$ 25,257
Earnings per common share
Basic (in dollars per share)	$ 0.00	$ 0.57
Diluted (in dollars per share)	$ 0.00	$ 0.57
Class A Common Stock
Costs and expenses
Net income	$ (106)
Earnings per common share
Basic (in dollars per share)	$ 0.00
Diluted (in dollars per share)	$ 0.00
Class B Common Stock
Costs and expenses
Net income	$ 2,032
Earnings per common share
Basic (in dollars per share)	$ 0.24
Diluted (in dollars per share)	$ 0.23