Basic and diluted income (loss) per common share

Basic net income (loss) per common share (EPS) is computed by dividing net income (loss) available to common shareholders (numerator) by the weighted average number of shares outstanding (denominator) during the period. Diluted EPS adjusts basic net income (loss) per common share, computed using the treasury stock method, for the effects of potentially dilutive common shares, if the effect is not antidilutive. In computing diluted EPS, the average stock price for the period is used in determining the number of shares assumed to be purchased from the exercise of stock warrants. Diluted EPS excludes all dilutive potential shares if their effect is antidilutive. Outstanding warrants that had no effect on the computation of dilutive weighted average number of shares outstanding as their effect would be antidilutive were approximately 7,475,166 and 12,185,000 as of September 30, 2017 and 2016, respectively. There were 0 and 4,500 potentially dilutive warrants outstanding at September 30, 2017 and 2016, respectively.