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Net Income Per Common Share | 12 Months Ended
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Jan. 31, 2018
Earnings Per Share [Abstract] |
Net Income Per Common Share | 13. 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:
|  | Fiscal Year Ended January 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Basic weighted-average common shares outstanding |  |  | 111,887,308 |  |  |  | 116,873,023 |  |  |  | 125,232,499 |
Effect of dilutive options, stock appreciation rights, restricted stock units and performance stock units |  |  | 480,616 |  |  |  | 418,094 |  |  |  | 780,915 |
Diluted weighted-average shares outstanding |  |  | 112,367,924 |  |  |  | 117,291,117 |  |  |  | 126,013,414 |
For the fiscal years ended January 31, 2018, 2017 and 2016, awards to purchase 906,294 common shares ranging in price from $25.60 to $46.02, awards to purchase 812,957 common shares ranging in price from $28.10 to $46.02 and awards to purchase 692,942 common shares ranging in price from $25.60 to $46.02, respectively, were excluded from the calculation of diluted net income per common share because the impact would be anti-dilutive. As of January 31, 2018 and 2017, 2,509,536 and 3,165,152 contingently issuable awards, respectively, were excluded from the calculation of diluted net income per common share as they did not meet certain performance criteria.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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