Net Income (Loss) per Share

6 Months Ended

Jun. 30, 2012

Net Income (Loss) Per Share [Abstract]

Net income (loss) per share

2. NET INCOME (LOSS) PER SHARE

Basic net income (loss) per share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding. Diluted net income (loss) per share is computed by dividing net income (loss) by the weighted-average number of common shares and dilutive common stock equivalent shares outstanding.

	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012			2011
	(in thousands, except per share data)				(in thousands, except per share data)
Net income (loss)	$	8,038	$	1,279	$	(9,666	)	$	3,112
Weighted-average number of shares of common stock and common stock equivalents outstanding:
Weighted-average number of common shares outstanding for computing basic earnings per share		22,624		22,348		22,624			20,558
Dilutive effect of warrants and stock options after application of the treasury stock method*		34		805		—			1,112
Weighted-average number of common shares outstanding for computing diluted earnings per share		22,658		23,153		22,624			21,670
Net income (loss) per share — basic	$	0.36	$	0.06	$	(0.43	)	$	0. 15
Net income (loss) per share — dilutive	$	0.35	$	0.06	$	(0.43	)	$	0.14

* Warrants and stock options to purchase 6,949,231 and 3,926,350 shares of common stock were excluded from the net income (loss) per share calculation for the three months ended June 30, 2012 and 2011, respectively, as their effect would have been anti-dilutive. Additionally, warrants and stock options to purchase 6,992,316 and 2,251,563 shares of common stock were excluded from the net income (loss) per share calculation for the six months ended June 30, 2012 and 2011, respectively, as their effect would have been anti-dilutive.