Goodwill and Intangible Assets, Net - Schedule of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Balance as of beginning of period	$ 572,064	$ 768,124
Goodwill disposal	(2,200)
Goodwill acquired		2,200
Foreign currency translation	(67)	10
Balance as of end of period	569,797	770,334
Cumulative inception to date impairment			$ 360,400	$ 160,600
Services
Goodwill [Roll Forward]
Balance as of beginning of period	566,359	762,419
Goodwill disposal	(2,200)
Goodwill acquired		2,200
Foreign currency translation	(67)	10
Balance as of end of period	564,092	764,629
True Health
Goodwill [Roll Forward]
Balance as of beginning of period	5,705	5,705
Goodwill disposal	0
Goodwill acquired		0
Foreign currency translation	0	0
Balance as of end of period	$ 5,705	$ 5,705