STOCK-BASED COMPENSATION (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
Oct. 31, 2015 | Oct. 31, 2014 | Oct. 31, 2015 | Oct. 31, 2014 |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | | | | | |
Stock-based compensation expense | | $ 1,881,000 | $ 1,209,000 | $ 5,618,000 | $ 3,794,000 |
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 | [2] | | | 1.64% | 1.58% |
Volatility | [3] | | | 41.00% | 47.00% |
Dividend rate | [4] | | | 1.10% | 1.32% |
Cost of Subscription [Member] | | | | | |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | | | | | |
Stock-based compensation expense | | 21,000 | 13,000 | $ 55,000 | $ 35,000 |
Cost of Maintenance and Other Revenue [Member] | | | | | |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | | | | | |
Stock-based compensation expense | | 69,000 | 38,000 | 202,000 | 115,000 |
Cost of Professional Services [Member] | | | | | |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | | | | | |
Stock-based compensation expense | | 189,000 | 121,000 | 542,000 | 364,000 |
Sales and Marketing [Member] | | | | | |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | | | | | |
Stock-based compensation expense | | 350,000 | 203,000 | 1,040,000 | 587,000 |
Research and Development [Member] | | | | | |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | | | | | |
Stock-based compensation expense | | 227,000 | 132,000 | 665,000 | 400,000 |
General and Administrative [Member] | | | | | |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | | | | | |
Stock-based compensation expense | | $ 1,025,000 | $ 702,000 | $ 3,114,000 | $ 2,293,000 |
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) | | | | (251,000) | |
Expired (in shares) | | | | (12,000) | |
Forfeited (in shares) | | | | (5,000) | |
Outstanding at end of period (in shares) | | 2,611,000 | | 2,611,000 | |
Vested and expected to vest (in shares) | [5] | 2,604,000 | | 2,604,000 | |
Vested and exercisable (in shares) | | 1,461,000 | | 1,461,000 | |
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) | | | | 10.65 | |
Expired (in dollars per shares) | | | | 14.24 | |
Forfeited (in dollars per shares) | | | | 12.05 | |
Outstanding at end of period (in dollars per shares) | | $ 14.72 | | 14.72 | |
Vested and expected to vest (in dollars per share) | [5] | 14.73 | | 14.73 | |
Vested and exercisable (in dollars per share) | | $ 11.55 | | $ 11.55 | |
Additional Disclosures [Abstract] | | | | | |
Weighted average remaining contractual term, outstanding at end of period | | | | 5 years | |
Weighted average remaining contractual term, vested and expected to vest at end of period | [5] | | | 5 years | |
Weighted average remaining contractual term, vested and exercisable at end of period | | | | 4 years | |
Aggregate intrinsic value, outstanding at end of period | | $ 27,067,000 | | $ 27,067,000 | |
Aggregate intrinsic value, vested and expected to vest at end of period | [5] | 26,972,000 | | 26,972,000 | |
Aggregate intrinsic value, vested and exercisable at end of period | | $ 19,663,000 | | 19,663,000 | |
Total intrinsic value of SARs exercised | | | | $ 3,600,000 | |
Number of shares withheld for payment of taxes (in shares) | | 7,800 | | 41,900 | |
Value of shares withheld for payment of taxes | | $ 200,000 | | $ 1,000,000 | |
Total unrecognized compensation cost | | $ 6,500,000 | | $ 6,500,000 | |
Weighted-average period to recognize total unrecognized compensation cost | | | | 2 years 9 months 18 days | |
Restricted Stock Units (RSUs) [Member] | | | | | |
Additional Disclosures [Abstract] | | | | | |
Number of shares withheld for payment of taxes (in shares) | | 2,600 | | 52,000 | |
Value of shares withheld for payment of taxes | | $ 65,000 | | $ 1,400,000 | |
Total unrecognized compensation cost | | $ 10,000,000 | | $ 10,000,000 | |
Weighted-average period to recognize total unrecognized compensation cost | | | | 3 years | |
Summary of Activity of RSUs [Roll Forward] | | | | | |
Restricted stock at beginning of period (in shares) | | | | 503,000 | |
Granted (in shares) | | | | 324,000 | |
Released (in shares) | [6] | | | (192,000) | |
Forfeited (in shares) | | | | (16,000) | |
Restricted stock at end of period (in shares) | | 619,000 | | 619,000 | |
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] | | | 15.57 | |
Forfeited (in dollars per share) | | | | 18.76 | |
Restricted stock at end of period (in dollars per share) | | $ 20.89 | | $ 20.89 | |
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[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 nine months ending on October 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. | |