Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2011

Earnings Per Share

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

	Year Ended December 31,
	2011			2010			2009
	(in thousands)
Basic net income (loss) attributable to Vertex per common share calculation:
Net income (loss) attributable to Vertex common shareholders	$	29,574		$	(754,626	)	$	(642,178	)
Less: Undistributed earnings allocated to participating securities		(291	)		—			—
Net income (loss) attributable to Vertex common shareholders—basic	$	29,283		$	(754,626	)	$	(642,178	)
Basic weighted-average common shares outstanding		204,891			200,402			173,259
Basic net income (loss) attributable to Vertex per common share	$	0.14		$	(3.77	)	$	(3.71	)
Diluted net income (loss) attributable to Vertex per common share calculation:
Net income (loss) attributable to Vertex common shareholders	$	29,574		$	(754,626	)	$	(642,178	)
Less: Undistributed earnings allocated to participating securities		(285	)		—			—
Net income (loss) attributable to Vertex common shareholders—diluted	$	29,289		$	(754,626	)	$	(642,178	)
Weighted-average shares used to compute basic net income (loss) per common share		204,891			200,402			173,259
Effect of potentially dilutive securities:
Stock options		3,863			—			—
Other		53			—			—
Weighted average shares used to compute diluted net income (loss) per common share		208,807			200,402			173,259
Diluted net income (loss) attributable to Vertex per common share	$	0.14		$	(3.77	)	$	(3.71	)

Potential gross common equivalent shares

	Year Ended December 31,
	2011		2010		2009
	(in thousands)
Stock options		9,626		21,293		19,232
Convertible senior subordinated notes		8,192		8,192		1,386
Unvested restricted stock and restricted stock units		8		1,950		1,727