CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CONSOLIDATED STATEMENTS OF OPERATIONS
Revenues	$ 284,624	$ 182,610
Cost of revenues (exclusive of items shown below)	208,837	146,223
Selling, general and administrative expenses	36,240	30,595
Depreciation and amortization	19,466	17,773
Gain on disposition of assets, net	(2,954)	(1,460)
Operating income (loss)	23,035	(10,521)
Interest expense	(178)	(380)
Interest income	15	18
Other income, net	504	507
Income (loss) before income taxes	23,376	(10,376)
Income tax provision (benefit)	8,297	(714)
Net income (loss)	$ 15,079	$ (9,662)
Earnings (loss) per share
Basic (in dollars per share)	$ 0.07	$ (0.05)
Diluted (in dollars per share)	$ 0.07	$ (0.05)