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Net Income (Loss) per Common Share | 6 Months Ended
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Jul. 31, 2020
Earnings Per Share [Abstract] |
Net Income (Loss) per Common Share | 11. Net Income (Loss) per Common Share The following is a reconciliation of the weighted-average common shares outstanding used for the computation of basic and diluted net income (loss) per common share:
|  | Three Months Ended |  |  | Six Months Ended |
|  | July 31, |  |  | July 31, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Basic weighted-average common shares outstanding |  |  | 97,778,749 |  |  |  | 99,095,562 |  |  |  | 97,843,796 |  |  |  | 101,722,244 |
Effect of dilutive options, performance stock units and restricted stock units |  |  | 326,169 |  |  |  | 506,903 |  |  |  | — |  |  |  | 704,796 |
Diluted weighted-average shares outstanding |  |  | 98,104,918 |  |  |  | 99,602,465 |  |  |  | 97,843,796 |  |  |  | 102,427,040 |
For the three months ended July 31, 2020 and 2019, awards to purchase 560,000 common shares ranging in price from $18.81 to $46.42 and 420,000 common shares ranging in price from $28.47 to $46.42, respectively, were excluded from the calculation of diluted net income per common share because the impact would be anti-dilutive. As a result of the net loss for the six months ended July 31, 2020, all share-based awards have been excluded from the calculation of diluted loss per share and therefore there was no difference in the weighted average number of common shares for basic and diluted loss per share as the effect of all potentially dilutive shares outstanding was anti-dilutive. For six months ended July 31, 2019, awards to purchase 400,000 common shares ranging in price from $28.47 to $46.42 were excluded from the calculation of diluted net income per common share because the impact would be anti-dilutive. Excluded from the calculation of diluted net income per common share as of July 31, 2020 and 2019, were 706,794 and 780,264 performance-based equity awards, respectively, because they did not meet the required performance criteria.

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