Condensed Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Revenue	$ 945,091	$ 842,912	$ 1,880,763	$ 1,477,955
Operating costs and expenses:
Cost of services	676,299	649,866	1,350,243	1,174,522
Depreciation and amortization	63,502	58,794	122,147	113,957
Selling, general and administrative expenses	39,699	35,855	79,380	71,714
Merger and integration	5,275	23,682	5,436	32,914
Loss (gain) on disposal of assets	5,772	(866)	9,542	(1,689)
Total operating costs and expenses	790,547	767,331	1,566,748	1,391,418
Operating income	154,544	75,581	314,015	86,537
Other income (expense):
Other income, net	2,927	1,461	2,647	6,831
Interest expense, net	(7,307)	(7,344)	(13,505)	(14,718)
Total other income (expense)	(4,380)	(5,883)	(10,858)	(7,887)
Income before income taxes	150,164	69,698	303,157	78,650
Income tax benefit (expense)	(100)	(1,240)	100,900	(1,400)
Net income	150,064	68,458	404,057	77,250
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	(318)	538	(322)	253
Hedging activities	2,624	1,565	2,066	7,177
Total comprehensive income	$ 152,370	$ 70,561	$ 405,801	$ 84,680
Net income per share:
Basic net income per share (in dollars per share)	$ 0.66	$ 0.28	$ 1.75	$ 0.32
Diluted net income per share (in dollars per share)	$ 0.64	$ 0.27	$ 1.72	$ 0.31
Weighted-average shares outstanding: basic (in shares)	229,033	243,969	231,084	243,621
Weighted-average shares outstanding: diluted (in shares)	233,222	250,775	235,202	249,462