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8. Basic and Diluted Earnings per Common Share
 12 Months Ended
Dec. 31, 2014
Earnings Per Share [Abstract]  
8. Basic and Diluted Earnings per Common Share

Basic earnings per share excludes the dilutive effects of options, warrants and other convertible securities. Diluted earnings per share reflects the potential dilutions of securities that could share in the Company’s earnings. Options, warrants, convertible preferred stock and restricted stock units representing approximately 13,978,000 and 9,607,000 shares were excluded from the computations of diluted net loss per common share for the years ended December 31, 2014 and 2013, respectively, as their effect was anti-dilutive.