STOCKHOLDERS' EQUITY (Tables)

12 Months Ended

Jan. 31, 2018

Stockholders' Equity Note [Abstract]

Schedule of restricted stock

	Awards  Outstanding		Weighted Average  Grant Date  Fair Value
Unvested as of January 31, 2016		2,048,883		$	30.79
Granted		630,642		$	25.82
Vested		(678,164)		$	22.43
Canceled		(2,500)		$	17.95
Unvested as of January 31, 2017		1,998,861		$	31.70
Granted		279,479		$	16.28
Vested		(495,372)		$	26.39
Canceled		(10,391)		$	28.42
Unvested as of January 31, 2018		1,772,577		$	29.51

Schedule of information regarding stock options

	2018					2017					2016
	Shares		Weighted  Average  Exercise			Shares		Weighted  Average  Exercise			Shares		Weighted  Average  Exercise
Stock options outstanding at beginning of year		251,131		$	9.16		331,651		$	10.59		469,176		$	11.16
Exercised		(188,465)		$	8.38		(20,520)		$	12.65		(37,525)		$	11.11
Granted		—		$	—		—		$	—		—		$	—
Cancelled or forfeited		—		$	—		(60,000)		$	15.87		(100,000)		$	13.08
Stock options outstanding at end of year		62,666		$	11.50		251,131		$	9.16		331,651		$	10.59
Exercisable		62,666		$	11.50		251,131		$	9.16		253,151		$	9.07

Schedule of information about stock options outstanding

Range of Exercise Prices	Number Outstanding as of January 31, 2018		Weighted Average Remaining Contractual Life		Weighted Average Exercise Price			Number Exercisable as of January 31, 2018		Weighted Average Exercise Price
$0.00 – $12.00		25,600		0.93		$	6.56		25,600		$	6.56
$12.01 – $16.00		20,400		2.36		$	12.51		20,400		$	12.51
$16.01 – $40.00		16,666		4.19		$	17.85		16,666		$	17.85
		62,666							62,666