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Earnings Per Share (Tables)
 6 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
Schedule of earnings per share, basic and diluted
The following table sets forth the computation of basic and diluted net income (loss) per share for the periods ended:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2017
 
2016
 
2017
 
2016
 
(in thousands, except per share amounts)
Basic net income (loss) attributable to Vertex per common share calculation:
 
 
 
 
 
 
 
Net income (loss) attributable to Vertex common shareholders
$
17,996

 
$
(64,525
)
 
$
265,752

 
$
(106,156
)
Less: Undistributed earnings allocated to participating securities
(23
)
 
—

 
(387
)
 
—

Net income (loss) attributable to Vertex common shareholders—basic
$
17,973

 
$
(64,525
)
 
$
265,365

 
$
(106,156
)
 
 
 
 
 
 
 
 
Basic weighted-average common shares outstanding
247,521

 
244,482

 
246,782

 
244,124

Basic net income (loss) attributable to Vertex per common share
$
0.07

 
$
(0.26
)
 
$
1.08

 
$
(0.43
)
 
 
 
 
 
 
 
 
Diluted net income (loss) attributable to Vertex per common share calculation:
 
 
 
 
 
 
 
Net income (loss) attributable to Vertex common shareholders
$
17,996

 
$
(64,525
)
 
$
265,752

 
$
(106,156
)
Less: Undistributed earnings allocated to participating securities
(23
)
 
—

 
(382
)
 
—

Net income (loss) attributable to Vertex common shareholders—diluted
$
17,973

 
$
(64,525
)
 
$
265,370

 
$
(106,156
)
 
 
 
 
 
 
 
 
Weighted-average shares used to compute basic net income (loss) per common share
247,521

 
244,482

 
246,782

 
244,124

Effect of potentially dilutive securities:
 
 
 
 
 
 
 
Stock options
2,787

 
—

 
2,407

 
—

Restricted stock and restricted stock units
1,264

 
—

 
958

 
—

Other
63

 
—

 
52

 
—

Weighted-average shares used to compute diluted net income (loss) per common share
251,635

 
244,482

 
250,199

 
244,124

Diluted net income (loss) attributable to Vertex per common share
$
0.07

 
$
(0.26
)
 
$
1.06

 
$
(0.43
)
Potential gross common equivalent shares
The Company did not include the securities in the following table in the computation of the dilutive net income (loss) per share attributable to Vertex common shareholders calculations because the effect would have been anti-dilutive during each period:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2017
 
2016
 
2017
 
2016
 
(in thousands)
Stock options
3,112

 
12,231

 
7,065

 
12,231

Unvested restricted stock and restricted stock units
6

 
3,506

 
32

 
3,506