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STOCK-BASED COMPENSATION (Tables) | 9 Months Ended
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Oct. 31, 2018
STOCK-BASED COMPENSATION |
Schedule of stock option activity under the Company's stock plans | Summaries of stock option activity under the Company’s stock plans for the nine months ended October 31, 2018 and 2017, 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 |  | 192 |  | $ | 40.32 |  |  |  |  |
Exercised |  | (3) |  | $ | 17.33 |  |  |  |  |
Outstanding, October 31, 2018 |  | 1,078 |  | $ | 44.11 |  | 7.63 |  | $ | 11.33
Exercisable, October 31, 2018 |  | 709 |  | $ | 44.57 |  | 6.69 |  | $ | 11.77
|  |  |  | Exercise |  | Remaining |  |
|  | Shares |  | Price |  | Term (years) |  | Fair Value
Outstanding, February 1, 2017 |  | 707 |  | $ | 39.04 |  | 7.82 |  | $ | 10.22
Granted |  | 125 |  | $ | 63.58 |  |  |  |  |
Exercised |  | (90) |  | $ | 30.74 |  |  |  |  |
Forfeited |  | (10) |  | $ | 71.75 |  |  |  |  |
Outstanding, October 31, 2017 |  | 732 |  | $ | 43.81 |  | 7.59 |  | $ | 11.61
Exercisable, October 31, 2017 |  | 452 |  | $ | 28.75 |  | 6.52 |  | $ | 7.76
Schedule of changes in the number of non-vested options to purchase shares of common stock | The changes in the number of non-vested options to purchase shares of common stock for the nine months ended October 31, 2018 and 2017, and the weighted average fair value per share for each number, are presented below (shares in thousands):
|  | Shares |  | Fair Value
Non-vested, February 1, 2018 |  | 302 |  | $ | 13.55
Granted |  | 192 |  | $ | 9.35
Vested |  | (125) |  | $ | 16.19
Non-vested, October 31, 2018 |  | 369 |  | $ | 10.47
|  | Shares |  | Fair Value
Non-vested, February 1, 2017 |  | 270 |  | $ | 14.93
Granted |  | 125 |  | $ | 16.19
Vested |  | (105) |  | $ | 9.66
Forfeited |  | (10) |  | $ | 19.14
Non-vested, October 31, 2017 |  | 280 |  | $ | 17.83
Summary of assumptions used to estimate fair value of stock options granted |
|  | Nine Months Ended October 31, |
|  | 2018 |  | 2017 |
Dividend yield |  | 2.5 | % | 1.1 | %
Expected volatility |  | 35.0 | % | 36.0 | %
Risk-free interest rate |  | 2.4 | % | 1.6 | %
Expected life (in years) |  | 3.3 |  | 3.4 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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