STOCKHOLDERS' EQUITY (Tables)

12 Months Ended

Jan. 31, 2020

Stockholders' Equity Note [Abstract]

Schedule of restricted stock

Restricted Stock Units and Performance Based Restricted Stock Units

	Restricted Stock Units			Performance Based Restricted Stock Units
		Weighted Average			Weighted Average
	Awards	Grant Date		Awards	Grant Date
	Outstanding	Fair Value		Outstanding	Fair Value
Unvested as of January 31, 2017	435,102	$	30.36	1,599,472	$	30.32
Granted	52,891	$	26.83	190,875	$	13.36
Vested	(150,588)	$	28.75	(344,784)	$	25.35
Cancelled	(10,391)	$	28.42	—	$	—
Unvested as of January 31, 2018	327,014	$	30.59	1,445,563	$	29.26
Granted	137,723	$	38.32	391,530	$	30.23
Vested	(159,663)	$	30.38	(292,266)	$	25.91
Cancelled	(23,249)	$	29.69	(5,033)	$	27.10
Unvested as of January 31, 2019	281,825	$	34.56	1,539,794	$	30.15
Granted	142,594	$	37.74	332,651	$	35.77
Vested	(168,781)	$	32.32	(810,655)	$	24.58
Cancelled	(12,695)	$	35.09	(3,080)	$	42.41
Unvested as of January 31, 2020	242,943	$	37.95	1,058,710	$	36.15

Schedule of information regarding stock options

Stock Options

	2020			2019			2018
		Weighted			Weighted			Weighted
		Average			Average			Average
	Shares	Exercise		Shares	Exercise		Shares	Exercise
Stock options outstanding at beginning of year	55,311	$	15.70	62,666	$	11.50	251,131	$	9.16
Exercised	(13,200)	$	8.71	(15,600)	$	6.55	(188,465)	$	8.38
Granted	—	$	—	8,245	$	30.32	—	$	—
Cancelled or forfeited	(2,800)	$	9.20	—	$	—	—	$	—
Stock options outstanding at end of year	39,311	$	18.51	55,311	$	15.70	62,666	$	11.50
Exercisable	35,188	$	17.12	47,066	$	13.14	62,666	$	11.50

Schedule of information about stock options outstanding

	Number	Weighted	Weighted		Number	Weighted
	Outstanding as of	Average	Average		Exercisable as of	Average
	January 31,	Remaining	Exercise		January 31,	Exercise
Range of Exercise Prices	2020	Contractual Life	Price		2020	Price
$12.51 - $17.45	21,066	0.56	$	14.07	21,066	$	14.07
$18.11 - $30.32	18,245	2.51	$	23.63	14,122	$	21.67
	39,311				35,188