Net Income (Loss) Per Share of Common Stock (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Schedule of Computation of Basic and Diluted Net Income (Loss) Per Share of Common Stock

The following table sets forth the computation of basic and diluted net income (loss) per share of common stock (in thousands, except per share data):

	Year Ended December 31,
	2016									2015									2014
	Class			Class			Class			Class			Class			Class			Class			Class			Class
	A			B			C			A			B			C			A			B			C
BASIC:
Net income (loss) attributable to common    stockholders	$	(92,988	)	$	(12,660	)	$	(2,525	)	$	(103,628	)	$	(15,153	)	$	(2,729	)	$	(189,732	)	$	(30,869	)	$	(5,300	)
Weighted-average common shares outstanding		755,460			102,850			20,517			779,071			113,923			20,517			734,493			119,499			20,517
Basic net income (loss) per share	$	(0.12	)	$	(0.12	)	$	(0.12	)	$	(0.13	)	$	(0.13	)	$	(0.13	)	$	(0.26	)	$	(0.26	)	$	(0.26	)
DILUTED:
Net income (loss) attributable to common    stockholders-basic	$	(92,988	)	$	(12,660	)	$	(2,525	)	$	(103,628	)	$	(15,153	)	$	(2,729	)	$	(189,732	)	$	(30,869	)	$	(5,300	)
Reallocation of net income (loss) as a result of   conversion of Class C shares to Class A shares		(2,525	)		—			—			(2,729	)		—			—			(5,300	)		—			—
Reallocation of net income (loss) as a result of    conversion of Class B shares to Class A shares		(12,660	)		—			—			(15,153	)		—			—			(30,869	)		—			—
Net income (loss) attributable to common    stockholders-diluted	$	(108,173	)	$	(12,660	)	$	(2,525	)	$	(121,510	)	$	(15,153	)	$	(2,729	)	$	(225,901	)	$	(30,869	)	$	(5,300	)
Weighted -average common shares-    outstanding basic		755,460			102,850			20,517			779,071			113,923			20,517			734,493			119,499			20,517
Conversion of Class C to Class A common shares    outstanding		20,517			—			—			20,517			—			—			20,517			—			—
Conversion of Class B to Class A common shares    outstanding		102,850			—			—			113,923			—			—			119,499			—			—
Weighted-average common shares outstanding-    diluted		878,827			102,850			20,517			913,511			113,923			20,517			874,509			119,499			20,517
Diluted net income (loss) per share	$	(0.12	)	$	(0.12	)	$	(0.12	)	$	(0.13	)	$	(0.13	)	$	(0.13	)	$	(0.26	)	$	(0.26	)	$	(0.26	)

Shares excluded from Calculation of Diluted Net Income (Loss) per Share

The following weighted-average employee equity awards were excluded from the calculation of diluted net income (loss) per share because their effect would have been anti-dilutive for the periods presented (in thousands):

	Year Ended December 31,
	2016		2015		2014
Stock options and employee stock purchase plan		28,380		29,412		42,454
Restricted shares		3,899		8,716		12,624
ZSUs		61,183		63,764		59,141
Total		93,462		101,892		114,219