Segment Information - Schedule of Selected Financial Data For Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Segment Reporting Information [Line Items]
Revenue	$ 569,555	$ 500,752
Total costs and expenses	474,014	420,433
Total assets	2,889,760		$ 2,858,388
Depreciation and amortization	19,648	16,619
Services agreement fee	1,600	3,700
Reportable Segment
Segment Reporting Information [Line Items]
Revenue	569,555	500,752
Personnel expenses	322,168	281,658
Facility expenses	52,215	48,382
Other expenses	74,484	68,053
Total costs and expenses	448,867	398,093
Segment Adjusted EBITDA	120,688	102,659
Total assets	2,889,760	2,729,238
Purchases of property and equipment	11,088	15,732
Depreciation and amortization	19,648	16,619
Reportable Segment | Nonrelated Party
Segment Reporting Information [Line Items]
Services agreement fee	$ 1,600	$ 3,700