Intangible Assets, Net - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (135,712)	$ (131,268)
Total	115,657
Indefinite-lived Intangible Assets [Line Items]
Intangible Assets, Gross	255,419	202,916
Intangible Assets, Net	119,707	71,648
Trademarks
Finite-Lived Intangible Assets [Line Items]
Indefinite lived assets:	2,150	2,150
Indefinite-lived Intangible Assets [Line Items]
Indefinite lived assets:	2,150	2,150
Licenses
Finite-Lived Intangible Assets [Line Items]
Indefinite lived assets:	1,900
Indefinite-lived Intangible Assets [Line Items]
Indefinite lived assets:	1,900
Network relationships
Finite-Lived Intangible Assets [Line Items]
Amortized intangible assets, Gross	155,978	150,679
Accumulated Amortization	(107,137)	(104,859)
Total	$ 48,841	$ 45,820
Network relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life	11 years	11 years
Network relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life	21 years	21 years
Management contracts
Finite-Lived Intangible Assets [Line Items]
Useful Life	15 years	15 years
Amortized intangible assets, Gross	$ 22,832	$ 22,832
Accumulated Amortization	(17,002)	(16,662)
Total	5,830	6,170
Member relationships
Finite-Lived Intangible Assets [Line Items]
Amortized intangible assets, Gross	69,381	24,077
Accumulated Amortization	(9,154)	(7,345)
Total	$ 60,227	$ 16,732
Member relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life	7 years	10 years
Member relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life	14 years	14 years
Patient management platform
Finite-Lived Intangible Assets [Line Items]
Useful Life	5 years	5 years
Amortized intangible assets, Gross	$ 2,060	$ 2,060
Accumulated Amortization	(2,060)	(2,060)
Total	$ 0	$ 0
Tradename/trademarks
Finite-Lived Intangible Assets [Line Items]
Useful Life	20 years	20 years
Amortized intangible assets, Gross	$ 1,011	$ 1,011
Accumulated Amortization	(320)	(308)
Total	$ 691	$ 703
Developed technology
Finite-Lived Intangible Assets [Line Items]
Useful Life	6 years	6 years
Amortized intangible assets, Gross	$ 107	$ 107
Accumulated Amortization	(39)	(34)
Total	$ 68	$ 73