CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue
Total revenue		$ 846,383	$ 627,063	$ 434,950
Expenses
Cost of revenue (exclusive of depreciation and amortization expenses presented separately below)	[1]	513,059	327,825	269,352
Claims expenses		135,774	70,889	0
Selling, general and administrative expenses	[1]	257,046	235,418	205,670
Depreciation and amortization expenses		60,913	44,515	32,368
Gain on disposal of assets		(9,600)	0	0
Goodwill impairment		199,800	0	0
Change in fair value of contingent consideration and indemnification asset		(3,997)	(4,104)	400
Total operating expenses		1,152,995	674,543	507,790
Operating loss		(306,612)	(47,480)	(72,840)
Interest income		3,987	3,440	1,656
Interest expense		(14,534)	(5,484)	(3,636)
Loss from equity method investees		(9,465)	(4,736)	(1,755)
Other income (expense), net		(492)	109	171
Loss before income taxes and non-controlling interests		(327,116)	(54,151)	(76,404)
Provision (benefit) for income taxes		(21,536)	40	(6,637)
Net loss		(305,580)	(54,191)	(69,767)
Net loss attributable to non-controlling interests		(3,609)	(1,533)	(9,102)
Net loss attributable to common shareholders of Evolent Health, Inc.		$ (301,971)	$ (52,658)	$ (60,665)
Loss per common share
Basic and diluted (in dollars per share)		$ (3.67)	$ (0.68)	$ (0.94)
Weighted-average common shares outstanding
Basic and diluted (in shares)		82,364	77,338	64,351
Comprehensive loss
Net loss		$ (305,580)	$ (54,191)	$ (69,767)
Other comprehensive loss, net of taxes, related to:
Foreign currency translation adjustment		(52)	(182)	0
Total comprehensive loss		(305,632)	(54,373)	(69,767)
Total comprehensive loss attributable to non-controlling interests		(3,609)	(1,533)	(9,102)
Total comprehensive loss attributable to common shareholders of Evolent Health, Inc.		(302,023)	(52,840)	(60,665)
Transformation services
Revenue
Total revenue	[1]	15,203	32,916	29,466
Platform and operations services
Revenue
Total revenue	[1]	659,438	500,190	405,484
Premiums
Revenue
Total revenue		$ 171,742	$ 93,957	$ 0

[1] See Note 18 for amounts related to related parties included in these line items.