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Net Loss Per Share
 3 Months Ended
Mar. 31, 2014
Earnings Per Share [Abstract]  
Net Loss Per Share

Note 9 — Net Loss Per Share

Basic net loss per share is calculated based on the weighted-average number of common shares outstanding during the periods presented. For all periods presented in the accompanying Condensed Consolidated Statements of Operations, the net loss available to common stockholders is equal to the reported net loss. Basic and diluted net loss per share are the same due to our historical net losses and the requirement to exclude potentially dilutive securities which would have an anti-dilutive effect on net loss per share. The weighted average of these potentially dilutive securities for the three months ended March 31, 2014 and 2013 consisted of approximately 9.3 million and 15.3 million, respectively, of stock options.