Net income (loss) per share	6 Months Ended
Jan. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	Note 2 – Net income (loss) per share Basic net income (loss) per share represents net income (loss) divided by the weighted average number of common shares outstanding during the period. As a result of the net loss for the three and six months ended January 31, 2018 and 2017 diluted weighted average shares outstanding are the same as basic weighted average shares outstanding, and do not include the potential common shares from stock options and unvested restricted stock because to do so would be antidilutive. For the three and six months ended January 31, 2018, the number of potential common shares (“in the money options”) and unvested restricted stock excluded from the calculation of diluted earnings per share was 719,000, and 825,000, respectively. For the three and six months ended January 31, 2017, approximately 888,000 and 804,000 weighted average stock options were excluded from the calculation of diluted weighted average shares outstanding. For the three and six months ended January 31, 2018 there were no outstanding “out of the money” options to purchase common shares. For the three and six months ended January 31, 2017, the effect of approximately 494,000 and 247,000 of outstanding “out of the money” options to purchase common shares were excluded from the calculation of diluted net income per share because their effect would be anti-dilutive.

Net income (loss) per share

6 Months Ended

Jan. 31, 2018

Note 2 – Net income (loss) per share

Basic net income (loss) per share represents net income (loss) divided by the weighted average number of common shares outstanding during the period. As a result of the net loss for the three and six months ended January 31, 2018 and 2017 diluted weighted average shares outstanding are the same as basic weighted average shares outstanding, and do not include the potential common shares from stock options and unvested restricted stock because to do so would be antidilutive.

For the three and six months ended January 31, 2018, the number of potential common shares (“in the money options”) and unvested restricted stock excluded from the calculation of diluted earnings per share was 719,000, and 825,000, respectively. For the three and six months ended January 31, 2017, approximately 888,000 and 804,000 weighted average stock options were excluded from the calculation of diluted weighted average shares outstanding.

For the three and six months ended January 31, 2018 there were no outstanding “out of the money” options to purchase common shares. For the three and six months ended January 31, 2017, the effect of approximately 494,000 and 247,000 of outstanding “out of the money” options to purchase common shares were excluded from the calculation of diluted net income per share because their effect would be anti-dilutive.