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STOCKHOLDERS' EQUITY (Tables)

12 Months Ended

Jan. 31, 2017

Stockholders' Equity Note [Abstract]

Schedule of restricted stock

Restricted Stock Units

			Awards  Outstanding						Weighted Average  Grant Date  Fair Value
Unvested as of January 31, 2015					2,091,412					$	23.80
Granted					507,319					$	47.36
Vested					(549,848)					$	19.40
Canceled					—					$	—
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

Schedule of information regarding stock options

			2017												2016												2015
			Shares						Weighted  Average  Exercise						Shares						Weighted  Average  Exercise						Shares						Weighted  Average  Exercise
Stock options outstanding at beginning of year					331,651					$	10.59						469,176					$	11.16						536,976					$	11.11
Exercised					(20,520)					$	12.65						(37,525)					$	11.11						(67,800)					$	10.76
Granted					—					$	—						—					$	—						—					$	—
Cancelled or forfeited					(60,000)					$	15.87						(100,000)					$	13.08						—					$	—
Stock options outstanding at end of year					251,131					$	9.16						331,651					$	10.59						469,176					$	11.16
Exercisable					251,131					$	9.16						253,151					$	9.07						250,176					$	8.63

Schedule of information about stock options outstanding

Range of Exercise Prices			Number Outstanding as of January 31, 2017						Weighted Average Remaining Contractual Life						Weighted Average Exercise Price						Number Exercisable as of January 31, 2017						Weighted Average Exercise Price
$0.00 – $8.00					113,800						1.24					$	6.61						113,800					$	6.61
$8.01 – $12.00					84,265						0.60					$	9.23						84,265					$	9.23
$12.01 – $16.00					36,400						4.08					$	12.98						36,400					$	12.98
$16.01 – $40.00					16,666						5.19					$	17.85						16,666					$	17.85
					251,131																		251,131

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- Definition

Tabular disclosure of the changes in outstanding nonvested restricted stock units.

+ 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 (c)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ 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 (c)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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