CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Revenue from Contract with Customer, Product and Service [Extensible List]	Service	Service	Service
Revenue from services	$ 1,344,004	$ 2,019,728	$ 2,803,381
Operating expenses:
Direct operating expenses	1,069,752	1,569,318	2,178,923
Selling, general and administrative expenses	233,377	300,332	324,209
Credit loss expense	21,432	14,562	9,609
Depreciation and amortization	18,200	18,347	12,576
Acquisition and integration-related costs	4,219	59	726
Restructuring costs	4,333	2,553	1,861
Legal and other losses	6,668	1,125	0
Impairment charges	2,888	719	5,597
Total operating expenses	1,360,869	1,907,015	2,533,501
(Loss) income from operations	(16,865)	112,713	269,880
Other expenses (income):
Interest expense	2,188	8,094	14,391
Loss on early extinguishment of debt	0	1,723	3,728
Interest income	(2,050)	(83)	(10)
Other (income) expense, net	(605)	85	(1,326)
(Loss) income before income taxes	(16,398)	102,894	253,097
Income tax (benefit) expense	(1,842)	30,263	67,115
Net (loss) income attributable to common stockholders	(14,556)	72,631	185,982
Other comprehensive (loss) income:
Unrealized foreign currency translation (loss) income, net of tax	(56)	2	(94)
Comprehensive income (loss) attributable to common stockholders	$ (14,612)	$ 72,633	$ 185,888
Net (loss) income per share attributable to common stockholders - Basic (usd per share)	$ (0.44)	$ 2.07	$ 5.02
Net (loss) income per share attributable to common stockholders - Diluted (usd per share)	$ (0.44)	$ 2.05	$ 4.95
Weighted average common shares outstanding:
Basic (in shares)	33,379	35,158	37,012
Diluted (in shares)	33,379	35,476	37,536