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

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

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

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

	Three Months Ended June 30,			Six Months Ended  June 30,
	2018			2018
	Class			Class
	A(1)			A(1)
BASIC:
Net income (loss) attributable to common stockholders – basic	$	(911	)	$	4,698
Weighted-average common shares outstanding – basic		858,666			864,117
Net income (loss) per share attributable to common stockholders    – basic	$	(0.00	)	$	0.01
DILUTED:
Net income (loss) attributable to common stockholders – basic	$	(911	)	$	4,698
Weighted-average common shares outstanding – basic		858,666			864,117
Weighted-average effect of dilutive securities:
Stock options and employee stock purchase plan		—			10,803
ZSUs		—			14,093
Performance-based ZSUs		—			1,272
Weighted-average common shares outstanding – diluted		858,666			890,285
Net income (loss) per share attributable to common    stockholders – diluted	$	(0.00	)	$	0.01

(1) The net income (loss) per share calculations for the three and six months ended June 30, 2018 are presented as if the one-for-one class conversion occurred as of the beginning of the respective period.

	Three Months Ended June 30,						Six Months Ended June 30,
	2017						2017
	Class		Class		Class		Class			Class			Class
	A		B		C		A			B			C
BASIC:
Net income (loss) attributable to common    stockholders – basic	$	4,565	$	407	$	121	$	(3,896	)	$	(382	)	$	(103	)
Weighted-average common shares    outstanding – basic		773,704		68,904		20,517		772,679			75,289			20,517
Net income (loss) per share attributable to    common stockholders – basic	$	0.01	$	0.01	$	0.01	$	(0.01	)	$	(0.01	)	$	(0.01	)
DILUTED:
Net income (loss) attributable to common    stockholders – basic	$	4,565	$	407	$	121	$	(3,896	)	$	(382	)	$	(103	)
Reallocation of net income (loss) as a result of    conversion of Class C shares to Class A shares		121		—		—		(103	)		—			—
Reallocation of net income (loss) as a result of    conversion of Class B shares to Class A shares		407		—		—		(382	)		—			—
Reallocation of net income (loss) to Class B and    Class C shares		—		—		—		—			—			—
Net income (loss) attributable to common    stockholders – diluted	$	5,093	$	407	$	121	$	(4,381	)	$	(382	)	$	(103	)
Weighted-average common shares    outstanding – basic		773,704		68,904		20,517		772,679			75,289			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		68,904		—		—		75,829			—			—
Weighted-average effect of dilutive securities:
Stock options and employee stock purchase    plan		9,811		917		—		—			—			—
ZSUs		14,710		—		—		—			—			—
Performance-based ZSUs		345		—		—		—			—			—
Weighted-average common shares    outstanding – diluted		887,991		69,821		20,517		869,025			75,289			20,517
Net income (loss) per share attributable to    common stockholders – diluted	$	0.01	$	0.01	$	0.01	$	(0.01	)	$	(0.01	)	$	(0.01	)

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 June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Stock options and employee stock purchase plan		38,278		16,827		9,737		35,138
Restricted shares		—		—		—		1,062
ZSUs		53,536		2,770		2,720		49,263
Total		91,814		19,597		12,457		85,463