Intangible Assets, Net - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (108,588)	$ (104,922)
Total	77,998
Indefinite-lived Intangible Assets [Line Items]
Intangible Assets, Gross	188,736	187,729
Intangible Assets, Net	80,148	82,807
Trademarks
Indefinite-lived Intangible Assets [Line Items]
Indefinite lived assets:	2,150
Licensing Agreements
Indefinite-lived Intangible Assets [Line Items]
Indefinite lived assets:		2,150
Network relationships
Finite-Lived Intangible Assets [Line Items]
Amortized intangible assets, Gross	150,679	150,679
Accumulated Amortization	(87,618)	(84,865)
Total	$ 63,061	$ 65,814
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	15 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	(13,998)	(13,563)
Total	$ 8,834	$ 9,269
Member relationships
Finite-Lived Intangible Assets [Line Items]
Useful Life	12 years	12 years
Amortized intangible assets, Gross	$ 8,997	$ 8,997
Accumulated Amortization	(4,976)	(4,606)
Total	$ 4,021	$ 4,391
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	(1,777)	(1,682)
Total	$ 283	$ 378
Trade names/trademarks
Finite-Lived Intangible Assets [Line Items]
Useful Life	20 years	20 years
Amortized intangible assets, Gross	$ 1,011	$ 1,011
Accumulated Amortization	(219)	(206)
Total	$ 792	$ 805
Subscriber relationships
Finite-Lived Intangible Assets [Line Items]
Useful Life	5 years
Amortized intangible assets, Gross	$ 235
Accumulated Amortization	0
Total	$ 235
Developed technology
Finite-Lived Intangible Assets [Line Items]
Useful Life	6 years
Amortized intangible assets, Gross	$ 772
Accumulated Amortization	0
Total	$ 772