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STOCK-BASED COMPENSATION (Tables) | 12 Months Ended
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Jan. 31, 2021
STOCK-BASED COMPENSATION |
Schedule of stock option activity under the Company's stock plans | Summaries of stock option activity under the Company’s approved Stock Plans for Fiscal 2021, Fiscal 2020 and Fiscal 2019, along with corresponding weighted average per share amounts, are presented below (shares in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Exercise | ​ | Remaining | ​ | ​
​ |  | Shares |  | Price |  | Term (years) |  | Fair Value
Outstanding, February 1, 2018 |  | 889 | ​ | $ | 44.83 |  | 7.91 | ​ | $ | 11.74
Granted |  | 257 | ​ | $ | 40.54 | ​ | ​ | ​ | ​ | ​
Exercised |  | (6) | ​ | $ | 17.19 | ​ | ​ | ​ | ​ | ​
Outstanding, January 31, 2019 |  | 1,140 | ​ | $ | 44.01 |  | 7.54 | ​ | $ | 11.22
Granted |  | 238 | ​ | $ | 44.76 | ​ | ​ | ​ | ​ | ​
Exercised |  | (61) | ​ | $ | 26.67 | ​ | ​ | ​ | ​ | ​
Forfeited | ​ | (46) | ​ | $ | 48.47 | ​ | ​ | ​ | ​ | ​
Outstanding, January 31, 2020 |  | 1,271 | ​ | $ | 44.83 |  | 7.18 | ​ | $ | 11.06
Granted | ​ | 242 | ​ | $ | 37.26 | ​ | ​ | ​ | ​ | ​
Exercised | ​ | (68) | ​ | $ | 24.17 | ​ | ​ | ​ | ​ | ​
Forfeited | ​ | (40) | ​ | $ | 57.44 | ​ | ​ | ​ | ​ | ​
Outstanding, January 31, 2021 | ​ | 1,405 | ​ | $ | 44.17 |  | 6.90 | ​ | $ | 10.39
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Exercisable, January 31, 2020 | ​ | 823 | ​ | $ | 45.58 |  | 6.20 | ​ | $ | 11.78
Exercisable, January 31, 2021 |  | 938 | ​ | $ | 46.09 |  | 5.95 | ​ | $ | 11.58
Schedule of changes in the number of non-vested options to purchase shares of common stock | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Exercise | ​ | Remaining | ​ | ​
​ |  | Shares |  | Price |  | Term (years) |  | Fair Value
Outstanding, February 1, 2018 |  | 889 | ​ | $ | 44.83 |  | 7.91 | ​ | $ | 11.74
Granted |  | 257 | ​ | $ | 40.54 | ​ | ​ | ​ | ​ | ​
Exercised |  | (6) | ​ | $ | 17.19 | ​ | ​ | ​ | ​ | ​
Outstanding, January 31, 2019 |  | 1,140 | ​ | $ | 44.01 |  | 7.54 | ​ | $ | 11.22
Granted |  | 238 | ​ | $ | 44.76 | ​ | ​ | ​ | ​ | ​
Exercised |  | (61) | ​ | $ | 26.67 | ​ | ​ | ​ | ​ | ​
Forfeited | ​ | (46) | ​ | $ | 48.47 | ​ | ​ | ​ | ​ | ​
Outstanding, January 31, 2020 |  | 1,271 | ​ | $ | 44.83 |  | 7.18 | ​ | $ | 11.06
Granted | ​ | 242 | ​ | $ | 37.26 | ​ | ​ | ​ | ​ | ​
Exercised | ​ | (68) | ​ | $ | 24.17 | ​ | ​ | ​ | ​ | ​
Forfeited | ​ | (40) | ​ | $ | 57.44 | ​ | ​ | ​ | ​ | ​
Outstanding, January 31, 2021 | ​ | 1,405 | ​ | $ | 44.17 |  | 6.90 | ​ | $ | 10.39
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Exercisable, January 31, 2020 | ​ | 823 | ​ | $ | 45.58 |  | 6.20 | ​ | $ | 11.78
Exercisable, January 31, 2021 |  | 938 | ​ | $ | 46.09 |  | 5.95 | ​ | $ | 11.58
Summary of assumptions used to estimate fair value of stock options granted | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2021 |  | 2020 |  | 2019 |
Dividend yield | ​ | 2.7 | % | 2.3 | % | 2.5 | %
Expected volatility | ​ | 30.3 | % | 32.5 | % | 34.5 | %
Risk-free interest rate | ​ | 0.4 | % | 1.9 | % | 2.7 | %
Expected life (in years) | ​ | 3.4 | ​ | 3.3 | ​ | 3.3 | ​

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