Net Income (Loss) Per Share	3 Months Ended
Oct. 31, 2023
Net Income (Loss) Per Share [Abstract]
Net income (loss) per share	Note 3 - 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. The dilutive effect of potential common shares, consisting of outstanding stock options, and unvested restricted stock units and performance stock units, is determined using the treasury stock method. For the three months ended October 31, 2023, the effect of approximately 3,320,000 of outstanding “out of the money” options to purchase common shares and the effect of approximately 54,000 of outstanding restricted stock units were excluded from the calculation of diluted net (loss) income per share because their effect would be anti-dilutive. During the three months ended October 31, 2023, the effect of approximately 593,000 warrants and the effect of approximately 1,199,000 shares related to the assumed conversion of debentures were excluded from the calculation of diluted weighted average shares outstanding because their effect would be anti-dilutive. For the three months ended October 31, 2022, approximately 106,000 potential common shares from “in the money options” and unearned performance stock units were excluded from the calculation of diluted (loss) per share. For the three months ended October 31, 2022, the effect of approximately 2,595,000 of outstanding “out of the money” options to purchase common shares were excluded from the calculation of diluted net (loss) income per share because their effect would be anti-dilutive.

Net Income (Loss) Per Share

3 Months Ended

Oct. 31, 2023

Net Income (Loss) Per Share [Abstract]

Note 3 - 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. The dilutive effect of potential common shares, consisting of outstanding stock options, and unvested restricted stock units and performance stock units, is determined using the treasury stock method.

For the three months ended October 31, 2023, the effect of approximately 3,320,000 of outstanding “out of the money” options to purchase common shares and the effect of approximately 54,000 of outstanding restricted stock units were excluded from the calculation of diluted net (loss) income per share because their effect would be anti-dilutive. During the three months ended October 31, 2023, the effect of approximately 593,000 warrants and the effect of approximately 1,199,000 shares related to the assumed conversion of debentures were excluded from the calculation of diluted weighted average shares outstanding because their effect would be anti-dilutive.

For the three months ended October 31, 2022, approximately 106,000 potential common shares from “in the money options” and unearned performance stock units were excluded from the calculation of diluted (loss) per share. For the three months ended October 31, 2022, the effect of approximately 2,595,000 of outstanding “out of the money” options to purchase common shares were excluded from the calculation of diluted net (loss) income per share because their effect would be anti-dilutive.