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STOCK-BASED COMPENSATION (Tables)

12 Months Ended

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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Tabular disclosure of the changes in outstanding nonvested shares.

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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.

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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.

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