Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Revenue	$ 361,952	$ 278,648	$ 753,674	$ 579,378
Operating expenses	289,736	236,934	580,035	460,905
Gross margin	72,216	41,714	173,639	118,473
Corporate general and administrative expenses	10,926	13,816	27,235	28,299
Legal settlement, net	0	30,468	0	30,468
Operating income (loss)	61,290	(2,570)	146,404	59,706
Other income (expense):
Interest expense	(1,645)	(959)	(2,904)	(1,836)
Gain on sale of operations, net	135	6,385	135	6,385
Other (expense) income, net	(15,898)	8,373	(22,301)	13,162
Total other (expense) income, net	(17,408)	13,799	(25,070)	17,711
Income from continuing operations before income tax expense	43,882	11,229	121,334	77,417
Income tax expense	12,622	2,616	31,943	18,588
Income from continuing operations	31,260	8,613	89,391	58,829
Loss from discontinued operations, net of tax	(5)	(6)	(9)	(13)
Net income	$ 31,255	$ 8,607	$ 89,382	$ 58,816
Basic:
Continuing operations (in dollars per share)	$ 0.60	$ 0.16	$ 1.72	$ 1.11
Discontinued operations (in dollars per share)	0	0	0	0
Net income (in dollars per share)	0.60	0.16	1.72	1.11
Diluted:
Continuing operations (in dollars per share)	0.60	0.16	1.70	1.09
Discontinued operations (in dollars per share)	0	0	0	0
Net income (in dollars per share)	$ 0.60	$ 0.16	$ 1.70	$ 1.09
Basic weighted average shares outstanding (in shares)	51,911	52,874	52,015	53,119
Diluted weighted average shares outstanding (in shares)	52,531	53,769	52,736	54,109
Comprehensive income:
Net income	$ 31,255	$ 8,607	$ 89,382	$ 58,816
Other comprehensive income, net of tax	480	58	2,405	912
Comprehensive income	$ 31,735	$ 8,665	$ 91,787	$ 59,728