Stock-based Compensation - Stock Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Stock based Compensation
Total	$ 43,809	$ 37,755	$ 30,940
2024	40,830
2025	25,019
2026	10,884
2027	1,418
Included in general and administrative
Stock based Compensation
Total	36,041	30,555	24,598
Included in cost of services
Stock based Compensation
Total	$ 7,768	$ 7,200	$ 6,342