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

12 Months Ended

Dec. 31, 2012

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, 2012:

	2012			2011			2010
	(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	$	(107,032	)	$	29,574		$	(754,626	)
Less: Undistributed earnings allocated to participating securities	—			(291		)	—
Net income (loss) attributable to Vertex common shareholders—basic	$	(107,032	)	$	29,283		$	(754,626	)
Basic weighted-average common shares outstanding	211,946			204,891			200,402
Basic net income (loss) attributable to Vertex per common share	$	(0.50	)	$	0.14		$	(3.77	)
Diluted net income (loss) attributable to Vertex per common share calculation:
Net income (loss) attributable to Vertex common shareholders	$	(107,032	)	$	29,574		$	(754,626	)
Less: Undistributed earnings allocated to participating securities	—			(285		)	—
Net income (loss) attributable to Vertex common shareholders—diluted	$	(107,032	)	$	29,289		$	(754,626	)
Weighted-average shares used to compute basic net income (loss) per common share	211,946			204,891			200,402
Effect of potentially dilutive securities:
Stock options	—			3,863			—
Other	—			53			—
Weighted-average shares used to compute diluted net income (loss) per common share	211,946			208,807			200,402
Diluted net income (loss) attributable to Vertex per common share	$	(0.50	)	$	0.14		$	(3.77	)

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:

	2012	2011	2010
	(in thousands)
Stock options	19,726	9,626	21,293
Convertible senior subordinated notes	8,192	8,192	8,192
Unvested restricted stock and restricted stock units	2,350	8	1,950