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Earnings Per Share | 6 Months Ended
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Jul. 31, 2022
Earnings Per Share |
Earnings Per Share [Text Block] | Note 16 - Earnings Per Share The following table sets forth the computation of basic and diluted earnings per share (“EPS”) (number of shares in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three Months Ended |  | Six Months Ended
​ | ​ | July 31, |  | July 31, | ​ | July 31, |  | July 31,
​ | ​ | 2022 | ​ | 2021 | ​ | 2022 | ​ | 2021
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income for purposes of calculating basic and diluted earnings per share |  | 22,902 |  | 23,176 |  | 46,017 |  | 41,597
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average shares outstanding |  | 84,783 |  | 84,566 |  | 84,774 |  | 84,534
Dilutive effect of employee stock options |  | 401 |  | 421 |  | 433 |  | 417
Dilutive effect of restricted and performance share units |  | 1,154 |  | 1,141 |  | 1,137 |  | 1,115
Weighted average common and common equivalent shares outstanding |  | 86,338 |  | 86,128 |  | 86,344 |  | 86,066
Earnings per share |  |  |  |  |  |  |  |
Basic |  | 0.27 |  | 0.27 |  | 0.54 |  | 0.49
Diluted |  | 0.27 |  | 0.27 |  | 0.53 |  | 0.48
​ For the three month periods ended July 31, 2022 and July 31, 2021, 501,494 and 248,505 options, respectively, were excluded from the calculation of diluted EPS as those options had an exercise price greater than or equal to the average market value of our common shares during the applicable periods and their inclusion would have been anti-dilutive. For the three month periods ended July 31, 2022 and July 31, 2021, the application of the treasury stock method excluded 135,776 and 91,081 stock options, respectively, from the calculation of diluted EPS as the assumed proceeds from the unrecognized stock-based compensation expense of such options that are attributed to future service periods made such options anti-dilutive. For the six month periods ended July 31, 2022 and July 31, 2021, 6,960 and 248,505 options, respectively, were excluded from the calculation of diluted EPS as those options had an exercise price greater than or equal to the average market value of our common shares during the applicable periods and their inclusion would have been anti-dilutive. For the six month periods ended July 31, 2022 and July 31, 2021, the application of the treasury stock method excluded 630,310 and 91,081 stock options, respectively, from the calculation of diluted EPS as the assumed proceeds from the unrecognized stock-based compensation expense of such stock options that are attributed to future service periods made such stock options anti-dilutive. For the three month periods ended July 31, 2022 and July 31, 2021, the application of the treasury stock method excluded PSUs and RSUs of 97,991 and 77,441, respectively, from the calculation of diluted EPS as the unrecognized stock-based compensation expense of such PSUs and RSUs that are attributed to future service periods made such PSUs and RSUs anti-dilutive. For the six month periods ended July 31, 2022 and July 31, 2021, the application of the treasury stock method excluded PSUs and RSUs of nil and 77,441, respectively, from the calculation of diluted EPS as the unrecognized stock-based compensation expense of such PSUs and RSUs that are attributed to future service periods made such PSUs and RSUs anti-dilutive.

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