Segment Data - Operating Segments (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues from services:	$ 309,940	$ 315,119	$ 339,771	$ 379,174	$ 414,035	$ 442,291	$ 540,695	$ 622,707	$ 1,344,004	$ 2,019,728	$ 2,803,381
Direct operating expenses									1,069,752	1,569,318	2,178,923
Credit loss expense (income)	(228)	1,512	18,858	1,290	4,166	$ 2,355	3,134	$ 4,908	21,432	14,562	9,609
Segment Reconciliation [Abstract]
Depreciation and amortization									18,200	18,347	12,576
Acquisition and integration-related costs									4,219	59	726
Restructuring costs		$ 1,000	2,100	900	$ 900		900		4,333	2,553	1,861
Legal and other losses	$ 1,200		$ 3,900	$ 3,700					6,668	1,125	0
Impairment charges									2,888	719	5,597
Interest expense									2,188	8,094	14,391
Loss on early extinguishment of debt							$ 1,700		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
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues from services:									1,344,004	2,019,728	2,803,381
Contribution Income									87,950	206,565	357,727
Segment Reporting, Reconciling Item, Corporate Nonsegment
Segment Reconciliation [Abstract]
Corporate overhead									68,507	71,049	67,087
Nurse And Allied Staffing
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues from services:									1,145,419	1,841,428	2,697,155
Nurse And Allied Staffing | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues from services:									1,145,419	1,841,428	2,697,155
Direct operating expenses									911,566	1,430,128	2,098,219
Employee compensation									100,038	144,471	171,057
Benefits									9,054	15,704	13,983
Marketing									7,695	10,452	14,518
Credit loss expense (income)									21,479	13,587	9,340
Divisional corporate G&A									15,905	21,550	26,622
Other segment items									7,081	8,759	11,197
Contribution Income									72,601	196,777	352,219
Physician Staffing
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues from services:									198,585	178,300	106,226
Physician Staffing | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues from services:									198,585	178,300	106,226
Direct operating expenses									158,186	139,190	80,704
Employee compensation									20,436	23,207	15,740
Benefits									2,797	2,353	1,341
Marketing									713	852	821
Credit loss expense (income)									(47)	975	269
Divisional corporate G&A									382	505	844
Other segment items									769	1,430	999
Contribution Income									$ 15,349	$ 9,788	$ 5,508