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Net Income (Loss) Per Share of Common Stock (Tables)
 6 Months Ended
Jun. 30, 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 June 30,

 

 

 

2017

 

 

2016

 

 

 

Class

 

 

Class

 

 

Class

 

 

Class

 

 

Class

 

 

Class

 

 

 

A

 

 

B

 

 

C

 

 

A

 

 

B

 

 

C

 

 

 

(unaudited)

 

BASIC:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net income (loss) attributable to common

   stockholders

 

$

4,565

 

 

$

407

 

 

$

121

 

 

$

(3,805

)

 

$

(537

)

 

$

(104

)

Weighted-average common shares outstanding

 

 

773,704

 

 

 

68,904

 

 

 

20,517

 

 

 

747,482

 

 

 

105,394

 

 

 

20,517

 

Basic net income (loss) per share

 

$

0.01

 

 

$

0.01

 

 

$

0.01

 

 

$

(0.01

)

 

$

(0.01

)

 

$

(0.01

)

DILUTED:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net income (loss) attributable to common

   stockholders

 

$

4,565

 

 

$

407

 

 

$

121

 

 

$

(3,805

)

 

$

(537

)

 

$

(104

)

Reallocation of net income (loss) as a result of

   conversion of Class C shares to Class A shares

 

 

121

 

 

 

—

 

 

 

—

 

 

 

(104

)

 

 

—

 

 

 

—

 

Reallocation of net income (loss) as a result of

   conversion of Class B shares to Class A shares

 

 

407

 

 

 

—

 

 

 

—

 

 

 

(537

)

 

 

—

 

 

 

—

 

Net income (loss) attributable to common

   stockholders-diluted

 

$

5,093

 

 

$

407

 

 

$

121

 

 

$

(4,446

)

 

$

(537

)

 

$

(104

)

Weighted-average common shares outstanding-basic

 

 

773,704

 

 

 

68,904

 

 

 

20,517

 

 

 

747,482

 

 

 

105,394

 

 

 

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

 

 

 

—

 

 

 

—

 

 

 

105,394

 

 

 

—

 

 

 

—

 

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

 

 

 

873,393

 

 

 

105,394

 

 

 

20,517

 

Diluted net income (loss) per share

 

$

0.01

 

 

$

0.01

 

 

$

0.01

 

 

$

(0.01

)

 

$

(0.01

)

 

$

(0.01

)

 

 

 

 

 

Six Months Ended June 30,

 

 

 

2017

 

 

2016

 

 

 

Class

 

 

Class

 

 

Class

 

 

Class

 

 

Class

 

 

Class

 

 

 

A

 

 

B

 

 

C

 

 

A

 

 

B

 

 

C

 

 

 

(unaudited)

 

BASIC:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net income (loss) attributable to common

   stockholders

 

$

(3,896

)

 

$

(382

)

 

$

(103

)

 

$

(26,384

)

 

$

(3,891

)

 

$

(729

)

Weighted-average common shares outstanding

 

 

772,679

 

 

 

75,829

 

 

 

20,517

 

 

 

742,271

 

 

 

109,455

 

 

 

20,517

 

Basic net income (loss) per share

 

$

(0.01

)

 

$

(0.01

)

 

$

(0.01

)

 

$

(0.04

)

 

$

(0.04

)

 

$

(0.04

)

DILUTED:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net income (loss) attributable to common

   stockholders

 

$

(3,896

)

 

$

(382

)

 

$

(103

)

 

$

(26,384

)

 

$

(3,891

)

 

$

(729

)

Reallocation of net income (loss) as a result of

   conversion of Class C shares to Class A shares

 

 

(103

)

 

 

—

 

 

 

—

 

 

 

(729

)

 

 

—

 

 

 

—

 

Reallocation of net income (loss) as a result of

   conversion of Class B shares to Class A shares

 

 

(382

)

 

 

—

 

 

 

—

 

 

 

(3,891

)

 

 

—

 

 

 

—

 

Net income (loss) attributable to common

   stockholders-diluted

 

$

(4,381

)

 

$

(382

)

 

$

(103

)

 

$

(31,004

)

 

$

(3,891

)

 

$

(729

)

Weighted-average common shares outstanding-basic

 

 

772,679

 

 

 

75,829

 

 

 

20,517

 

 

 

742,271

 

 

 

109,455

 

 

 

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

 

 

75,829

 

 

 

—

 

 

 

—

 

 

 

109,455

 

 

 

—

 

 

 

—

 

Weighted-average common shares

   outstanding-diluted

 

 

869,025

 

 

 

75,829

 

 

 

20,517

 

 

 

872,243

 

 

 

109,455

 

 

 

20,517

 

Diluted net income (loss) per share

 

$

(0.01

)

 

$

(0.01

)

 

$

(0.01

)

 

$

(0.04

)

 

$

(0.04

)

 

$

(0.04

)

 

 

 
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,

 

 

 

2017

 

 

2016

 

 

2017

 

 

2016

 

Stock options and employee stock purchase plan

 

 

16,827

 

 

 

24,939

 

 

 

35,138

 

 

 

24,059

 

Restricted shares

 

 

—

 

 

 

3,692

 

 

 

1,062

 

 

 

4,580

 

ZSUs

 

 

2,770

 

 

 

63,239

 

 

 

49,263

 

 

 

62,983

 

Total

 

 

19,597

 

 

 

91,870

 

 

 

85,463

 

 

 

91,622