Basic and Diluted Net Income (Loss) Per Share

6 Months Ended

Jun. 30, 2011

Basic and Diluted Net Income (Loss) Per Share [Abstract]

BASIC AND DILUTED NET INCOME (LOSS) PER SHARE

8) BASIC AND DILUTED NET INCOME (LOSS) PER SHARE

Basic net income (loss) per common share is based on the weighted-average number of common shares outstanding during each period. Diluted net income (loss) is based on the weighted-average shares outstanding and any contingently issuable shares. The net outstanding shares are adjusted for the dilutive effect of shares issuable upon the assumed conversion of the Company’s common stock equivalents, which consist of outstanding stock options, warrants and unvested shares of common stock.

	Three months ended				Six months ended
	June 30, 2011		June 30, 2010		June 30, 2011		June 30, 2010
Weighted average common shares outstanding-basic		24,539,627		24,187,569		24,412,221		24,155,194
Stock options, warrants and unvested shares of common stock		2,273,702		378,907		1,921,837		—
Weighted average common shares outstanding-diluted		26,813,329		24,566,476		26,334,058		24,155,194

The following stock options were not included in weighted average diluted common shares outstanding because they are anti-dilutive:

	Three months ended				Six months ended
	June 30, 2011		June 30, 2010		June 30, 2011		June 30, 2010
Stock options		852,000		2,212,000		890,000		3,134,000
Warrants		—		1,145,000		—		1,395,000
Unvested shares of common stock		—		—		—		597,000
Total		852,000		3,357,000		890,000		5,126,000