Revenue Recognition- Narrative (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue from services	$ 628,218	$ 636,098	$ 753,561	$ 788,732	$ 640,679	$ 374,905	$ 331,827	$ 329,241	$ 2,806,609	$ 1,676,652	$ 836,417
Nurse And Allied Staffing
Disaggregation of Revenue [Line Items]
Revenue from services									2,700,383	1,605,781	768,483
Revision of Prior Period, Adjustment | Nurse And Allied Staffing
Disaggregation of Revenue [Line Items]
Revenue from services											10,500
Other Services
Disaggregation of Revenue [Line Items]
Revenue from services									76,081	39,835	31,157
Other Services | Nurse And Allied Staffing
Disaggregation of Revenue [Line Items]
Revenue from services									$ 71,295	$ 36,807	28,042
Other Services | Revision of Prior Period, Adjustment | Nurse And Allied Staffing
Disaggregation of Revenue [Line Items]
Revenue from services											$ 10,500