Net Income (Loss) Per Share Attributable to Vertex Common Shareholders (Tables)

12 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

Calculation of net income (loss) per basic and diluted share

The following table sets forth the computation of basic and diluted net income (loss) per share for the three years ended December 31, 2013:

	2013			2012			2011
	(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	$	(445,028	)	$	(107,032	)	$	29,574
Less: Undistributed earnings allocated to participating securities	—			—			(291		)
Net income (loss) attributable to Vertex common shareholders—basic	$	(445,028	)	$	(107,032	)	$	29,283
Basic weighted-average common shares outstanding	224,906			211,946			204,891
Basic net income (loss) attributable to Vertex per common share	$	(1.98	)	$	(0.50	)	$	0.14
Diluted net income (loss) attributable to Vertex per common share calculation:
Net income (loss) attributable to Vertex common shareholders	$	(445,028	)	$	(107,032	)	$	29,574
Less: Undistributed earnings allocated to participating securities	—			—			(285		)
Net income (loss) attributable to Vertex common shareholders—diluted	$	(445,028	)	$	(107,032	)	$	29,289
Weighted-average shares used to compute basic net income (loss) per common share	224,906			211,946			204,891
Effect of potentially dilutive securities:
Stock options	—			—			3,863
Other	—			—			53
Weighted-average shares used to compute diluted net income (loss) per common share	224,906			211,946			208,807
Diluted net income (loss) attributable to Vertex per common share	$	(1.98	)	$	(0.50	)	$	0.14

Potential gross common equivalent shares

The Company did not include the securities described in the following table in the computation of the diluted net income (loss) attributable to Vertex per common share calculations because the effect would have been anti-dilutive during each such period:

	2013	2012	2011
	(in thousands)
Stock options	15,729	19,726	9,626
Convertible senior subordinated notes	—	8,192	8,192
Unvested restricted stock and restricted stock units	2,165	2,350	8