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

3 Months Ended

Mar. 31, 2017

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):

	Three Months Ended March 31,
	2017									2016
	Class			Class			Class			Class			Class			Class
	A			B			C			A			B			C
	(unaudited)
BASIC:
Net income (loss) attributable to common    stockholders	$	(8,356	)	$	(896	)	$	(222	)	$	(22,471	)	$	(3,461	)	$	(626	)
Weighted-average common shares outstanding		772,364			82,831			20,517			737,061			113,515			20,517
Basic net income (loss) per share	$	(0.01	)	$	(0.01	)	$	(0.01	)	$	(0.03	)	$	(0.03	)	$	(0.03	)
DILUTED:
Net income (loss) attributable to common    stockholders	$	(8,356	)	$	(896	)	$	(222	)	$	(22,471	)	$	(3,461	)	$	(626	)
Reallocation of net income (loss) as a result of    conversion of Class C shares to Class A shares		(222	)		—			—			(626	)		—			—
Reallocation of net income (loss) as a result of    conversion of Class B shares to Class A shares		(896	)		—			—			(3,461	)		—			—
Net income (loss) attributable to common    stockholders-diluted	$	(9,474	)	$	(896	)	$	(222	)	$	(26,558	)	$	(3,461	)	$	(626	)
Weighted-average common shares outstanding-basic		772,364			82,831			20,517			737,061			113,515			20,517
Conversion of Class C to Class A common shares    outstanding		20,517			—			—			20,517			—			—
Conversion of Class B to Class A common shares    outstanding		82,831			—			—			113,515			—			—
Weighted-average common shares    outstanding-diluted		875,712			82,831			20,517			871,093			113,515			20,517
Diluted net income (loss) per share	$	(0.01	)	$	(0.01	)	$	(0.01	)	$	(0.03	)	$	(0.03	)	$	(0.03	)

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

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

	Three Months Ended March 31,
	2017		2016
Stock options and employee stock purchase plan		35,905		22,985
Restricted shares		1,417		5,504
ZSUs		52,932		63,758
Total		90,254		92,247