STOCK-BASED COMPENSATION (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation		$ 2,431	$ 1,709	$ 3,737	$ 2,585
Weighted Average Assumptions Used to Value SAR [Abstract]
Expected life in years	[1]			5 years	4 years 11 months 23 days
Risk free interest rate (in hundredths)	[2]			1.64%	1.58%
Volatility (in hundredths)	[3]			41.00%	47.00%
Dividend rate (in hundredths)	[4]			1.10%	1.32%
Cost of Subscription [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation		22	14	$ 34	$ 22
Cost of Maintenance and Other Revenue [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation		87	48	133	77
Cost of Professional Services [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation		234	156	353	243
Sales and Marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation		429	257	690	384
Research and Development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation		290	176	438	268
General and Administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation		$ 1,369	$ 1,058	$ 2,089	$ 1,591
Stock Appreciation Rights (SARs) [Member]
Stock Appreciation Rights (SARs) [Roll Forward]
Outstanding at beginning of period (in shares)				2,499,000
Granted (in shares)				380,000
Exercised (in shares)				(211,000)
Expired (in shares)				(10,000)
Forfeited (in shares)				(3,000)
Outstanding at end of period (in shares)		2,655,000		2,655,000
Vested and expected to vest (in shares)	[5]	2,646,000		2,646,000
Vested and exercisable (in shares)		1,497,000		1,497,000
Weighted Average Exercise Price per Share [Abstract]
Outstanding at beginning of period (in dollars per shares)				$ 12.69
Granted (in dollars per share)				25.34
Exercised (in dollars per shares)				10.85
Expired (in dollars per shares)				14.63
Forfeited (in dollars per shares)				12.10
Outstanding at end of period (in dollars per shares)		$ 14.64		14.64
Vested and expected to vest (in dollars per share)	[5]	14.65		14.65
Vested and exercisable (in dollars per share)		$ 11.49		$ 11.49
Additional Disclosures [Abstract]
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2				5 years 2 months 12 days
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	[5]			5 years 2 months 12 days
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1				4 years 2 months 12 days
Aggregate intrinsic value, outstanding at end of period		$ 30,152		$ 30,152
Aggregate intrinsic value, vested and expected to vest at end of period	[5]	30,020		30,020
Aggregate intrinsic value, vested and exercisable at end of period		$ 21,697		21,697
Total intrinsic value of SARs exercised				$ 2,900
Number of shares withheld for payment of taxes (in shares)		18,400		34,100
Value of shares withheld for payment of taxes		$ 500		$ 900
Total unrecognized compensation cost		$ 7,300		$ 7,300
Weighted-average period to recognize total unrecognized compensation cost				2 years 10 months 24 days
Restricted Stock Units (RSUs) [Member]
Additional Disclosures [Abstract]
Number of shares withheld for payment of taxes (in shares)		48,800		49,400
Value of shares withheld for payment of taxes		$ 1,300		$ 1,300
Total unrecognized compensation cost		$ 10,900		$ 10,900
Weighted-average period to recognize total unrecognized compensation cost				3 years 2 months 12 days
Summary of Activity of RSUs [Roll Forward]
Restricted stock at beginning of period (in shares)				503,000
Granted (in shares)				323,000
Released (in shares)	[6]			(183,000)
Forfeited (in shares)				(13,000)
Restricted stock at end of period (in shares)		630,000		630,000
Weighted Average Grant Date Fair Value [Abstract]
Restricted stock at beginning of period (in dollars per share)				$ 16.27
Granted (in dollars per share)				24.77
Released (in dollars per share)	[6]			15.48
Forfeited (in dollars per share)				18.18
Restricted stock at end of period (in dollars per share)		$ 20.84		$ 20.84

[1] The expected life of SARs granted under the stock-based compensation plans is based on historical vested SAR exercise and post-vest forfeiture patterns and includes an estimate of the expected term for SARs that were fully vested and outstanding.

[2] The risk-free interest rate is based on the U.S. Treasury yield for a term consistent with the expected life of SARs in effect at the time of grant.

[3] The Company estimates the volatility of its common stock at the date of grant based on the historical volatility of the Company's common stock for a period equivalent to the expected life of the SARs, which it believes is representative of the expected volatility over the expected life of the SARs.

[4] The Company expects to continue paying quarterly dividends at the same rate as the six months ending on July 31, 2015.

[5] The expected-to-vest SARs are the result of applying the pre-vesting forfeiture rate assumptions to total outstanding SARs.

[6] The number of RSUs released includes shares withheld on behalf of employees to satisfy the minimum statutory tax withholding requirements.