CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
CONSOLIDATED STATEMENTS OF OPERATIONS
Revenues	$ 375,507	$ 188,757	$ 660,131	$ 371,367
Cost of revenues	260,917	145,789	469,754	292,012
Selling, general and administrative expenses	35,879	29,403	72,119	59,998
Depreciation and amortization	20,094	17,896	39,560	35,669
Gain on disposition of assets, net	(1,798)	(3,111)	(4,752)	(4,571)
Operating income (loss)	60,415	(1,220)	83,450	(11,741)
Interest expense	(222)	(103)	(400)	(483)
Interest income	128	14	143	32
Other income, net	79	616	583	1,123
Income (loss) before income taxes	60,400	(693)	83,776	(11,069)
Income tax provision (benefit)	13,461	33	21,758	(681)
Net income (loss)	$ 46,939	$ (726)	$ 62,018	$ (10,388)
Earnings (loss) per share
Basic (in dollars per share)	$ 0.22		$ 0.29	$ (0.05)
Diluted (in dollars per share)	$ 0.22		$ 0.29	$ (0.05)