CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenue from Contract with Customer, Product and Service [Extensible List]	Service	Service	Service
Revenue from services	$ 2,806,609	$ 1,676,652	$ 836,417
Operating expenses:
Direct operating expenses	2,178,923	1,301,653	633,685
Selling, general and administrative expenses	324,209	215,292	173,809
Bad debt expense	9,609	4,783	3,035
Depreciation and amortization	12,576	9,852	12,671
Acquisition and integration-related costs	726	1,068	77
Restructuring costs	1,861	2,630	6,052
Impairment charges	5,597	2,070	16,248
Total operating expenses	2,533,501	1,537,348	845,577
Income (loss) from operations	273,108	139,304	(9,160)
Other expenses (income):
Interest expense	14,391	6,866	2,890
Loss on early extinguishment of debt	3,728	0	0
Other (income) expense, net	(1,336)	(770)	280
Income (loss) before income taxes	256,325	133,208	(12,330)
Income tax expense (benefit)	67,864	1,206	(188)
Consolidated net income (loss)	188,461	132,002	(12,142)
Less: Net income attributable to noncontrolling interest in subsidiary	0	0	820
Net income (loss) attributable to common stockholders	188,461	132,002	(12,962)
Other comprehensive loss:
Foreign currency translation adjustment, net of taxes	(94)	(13)	(40)
Comprehensive income (loss)	188,367	131,989	(12,182)
Less: Net income attributable to noncontrolling interest in subsidiary	0	0	820
Comprehensive income (loss) attributable to common stockholders	$ 188,367	$ 131,989	$ (13,002)
Net income (loss) per share attributable to common stockholders - Basic (usd per share)	$ 5.09	$ 3.60	$ (0.36)
Net income (loss) per share attributable to common stockholders - Diluted (usd per share)	$ 5.02	$ 3.53	$ (0.36)
Weighted average common shares outstanding:
Basic (in shares)	37,012	36,689	36,088
Diluted (in shares)	37,536	37,392	36,088