CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
CONSOLIDATED STATEMENTS OF OPERATIONS
Revenues	$ 476,668	$ 284,624
Cost of revenues	305,250	208,837
Selling, general and administrative expenses	42,197	36,240
Pension settlement charge	17,375
Depreciation and amortization	24,125	19,466
Gain on disposition of assets, net	(2,936)	(2,954)
Operating income	90,657	23,035
Interest expense	(72)	(178)
Interest income	1,855	15
Other income, net	761	504
Income before income taxes	93,201	23,376
Income tax provision	21,677	8,297
Net income	$ 71,524	$ 15,079
Earnings per share
Basic (in dollars per share)	$ 0.33	$ 0.07
Diluted (in dollars per share)	0.33	$ 0.07
Dividends paid per share (in dollars per share)	$ 0.04