Net Loss Per Share

12 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

Net Loss Per Share

7. Net Loss Per Share

Basic and diluted net loss per share was calculated by dividing the net loss per share attributed to the Company’s common shares by the weighted-average number of common shares outstanding. Diluted net loss per share includes the effect of all dilutive, potentially issuable common equivalent shares as defined using the treasury stock method. All of the Company’s common stock equivalents are anti-dilutive due to the Company’s net loss position for all periods presented. Accordingly, common stock equivalents of approximately 192,000, 143,000, and 83,000 stock options and 5,178,000, 13,000 and 13,000 warrants at December 31, 2013, 2012 and 2011, respectively, were excluded from the calculation of weighted average shares for diluted net loss per share.