Earnings (Loss) Per Share

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

3.  Earnings (Loss) Per Share

Basic earnings (loss) per share is computed by dividing net income (loss) by the weighted average number of shares of common stock outstanding during the period. Diluted net income (loss) per share is computed by dividing net income (loss) by the weighted average number of shares of common stock outstanding during the period plus dilutive common stock equivalents, using the treasury stock method.

Common stock equivalents for convertible preferred stock of 1,101,281 shares and 861,872 shares were excluded from the calculation of loss per share for the three months ended March 31, 2013 and 2012, respectively, because they were not dilutive; these shares would have been dilutive if the Company had not had a net loss for the those periods.

A warrant for 30,000 shares, and stock options of 100,000 were excluded from the calculation of loss per share for the three months ended March 31, 2013, and a warrant for 30,000 shares, and stock options of 150,000 were excluded from the calculation of loss per share for the three months ended March 31, 2012, respectively, because their effect was anti-dilutive.