CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (DEFICIT) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Accumulated Deficit)	Non-controlling Interests	Passport	Passport Common Stock Class A Common Stock	Passport Additional Paid-In Capital	Global Health	Global Health Common Stock Class A Common Stock	Global Health Additional Paid-In Capital
Beginning balance (in shares) at Dec. 31, 2018		79,172	3,190
Beginning balance at Dec. 31, 2018	$ 1,189,356	$ 792	$ 31	$ 1,093,174	$ (182)	$ 50,009	$ 45,532
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	4,152			4,152
Exercise of stock options (in shares)		11
Exercise of stock options	123			123
Restricted stock units vested, net of shares withheld for taxes (in shares)		203
Restricted stock units vested, net of shares withheld for taxes	(2,180)	$ 2		(2,182)
Class A common stock issued for earn-out (in shares)									43
Class A common stock issued for earn-out								$ 800		$ 800
Amount attributable to NCI from business combination	6,500						6,500
Foreign currency translation adjustment	24				24
Net loss	(48,649)					(46,739)	(1,910)
Reclassification of non-controlling interests	0			22			(22)
Ending balance (in shares) at Mar. 31, 2019		79,429	3,190
Ending balance at Mar. 31, 2019	1,150,126	$ 794	$ 31	1,096,089	(158)	3,270	50,100
Beginning balance (in shares) at Dec. 31, 2019		84,589	0
Beginning balance at Dec. 31, 2019	929,047	$ 846	$ 0	1,173,708	(234)	(251,962)	6,689
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	3,508			3,508
Exercise of stock options (in shares)		8
Exercise of stock options	84	$ 1		83
Restricted stock units vested, net of shares withheld for taxes (in shares)		237
Restricted stock units vested, net of shares withheld for taxes	(1,188)	$ 2		(1,190)
Class A common stock issued for earn-out (in shares)									428			188
Class A common stock issued for earn-out								$ 3,500	$ 4	$ 3,496	$ 685	$ 2	$ 683
Disposal of assets	(6,689)						(6,689)
Foreign currency translation adjustment	(153)				(153)
Net loss	(78,752)					(78,752)
Reclassification of non-controlling interests							(6,689)
Ending balance (in shares) at Mar. 31, 2020		85,450	0
Ending balance at Mar. 31, 2020	$ 847,072	$ 855	$ 0	$ 1,180,288	$ (387)	$ (333,684)	$ 0