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Net Income per Common Share | 3 Months Ended
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Apr. 30, 2019
Earnings Per Share [Abstract] |
Net Income per Common Share | 11. Net Income 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 per common share:
|  | Three Months Ended |
|  | April 30, |
|  | 2019 |  |  | 2018 |
Basic weighted-average common shares outstanding |  |  | 104,437,460 |  |  |  | 108,490,926 |
Effect of dilutive options, stock appreciation rights, performance stock units and restricted stock units |  |  | 902,688 |  |  |  | 1,252,751 |
Diluted weighted-average shares outstanding |  |  | 105,340,148 |  |  |  | 109,743,677 |
For the three months ended April 30, 2019 and 2018, awards to purchase 380,000 common shares ranging in price from $35.85 to $46.42 and 267,500 common shares ranging in price from $37.02 to $46.02, respectively, 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 April 30, 2019 and 2018 were 711,418 and 1,713,773 performance-based equity awards, respectively, because they did not meet the required performance criteria.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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