Intangible Assets, Net - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (77,689)	$ (73,517)
Total	98,840
Intangible Assets, Gross	176,529	176,529
Intangible Assets, Net	98,840	103,012
Network relationships
Finite-Lived Intangible Assets [Line Items]
Amortized intangible assets, Gross	143,930	143,930
Accumulated Amortization	(63,831)	(60,526)
Total	$ 80,099	$ 83,404
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	15 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	(10,206)	(9,676)
Total	$ 12,626	$ 13,156
Member relationships
Finite-Lived Intangible Assets [Line Items]
Useful Life	12 years	12 years
Amortized intangible assets, Gross	$ 6,696	$ 6,696
Accumulated Amortization	(2,573)	(2,352)
Total	$ 4,123	$ 4,344
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	(961)	(858)
Total	$ 1,099	$ 1,202
Trade name/trademarks
Finite-Lived Intangible Assets [Line Items]
Useful Life	20 years	20 years
Amortized intangible assets, Gross	$ 1,011	$ 1,011
Accumulated Amortization	(118)	(105)
Total	$ 893	$ 906