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STOCK-BASED COMPENSATION (Tables)
 12 Months Ended
Jan. 31, 2016
STOCK-BASED COMPENSATION [Abstract]  
Allocation of stock-based compensation expense
The following table sets forth reported stock compensation expense included in the Company’s Consolidated Statements of Income and Comprehensive Income for the fiscal years ended January 31, 2016, 2015 and 2014:

  
Years Ended January 31,
 
 
2016
 
2015
 
2014
 
 
(in thousands)
 
Stock-based compensation expense:
      
Cost of maintenance, subscription and other revenue
 
$
347
  
$
197
  
$
201
 
Cost of professional services
  
739
   
492
   
476
 
Sales and marketing
  
1,377
   
790
   
858
 
Research and development
  
900
   
518
   
628
 
General and administrative
  
4,077
   
2,996
   
2,517
 
Total stock-based compensation expense
 
$
7,440
  
$
4,993
  
$
4,680
 
Weighted average assumptions used to value SARs
The weighted average assumptions used to value SARs are shown in the following table.

  
Years Ended January 31,
 
  
2016
  
2015
  
2014
 
Expected life in years
  
5.00
   
4.98
   
4.57
 
Risk free interest rate
  
1.64
%
  
1.58
%
  
1.00
%
Volatility
  
41
%
  
47
%
  
53
%
Dividend rate
  
1.10
%
  
1.32
%
  
2.42
%
Activity for outstanding stock options and SARs
The following table summarizes the activity for outstanding options and SARs for the fiscal years ended January 31, 2016, 2015 and 2014:

  
Options/
SARs
(in thousands)
  
Weighted
Average
Exercise
Price per
Share
 
Weighted
Average
Remaining
Contractual
Term
(years)
  
Aggregate
Intrinsic
Value (in thousands)
 
Outstanding at January 31, 2013
  
2,920
  
$
11.11
 
 
  
   
 
Granted
  
599
   
11.73
 
 
  
   
 
Exercised
  
(404
)
  
9.21
 
 
  
   
 
Expired
  
(230
)
  
15.16
 
 
  
   
 
Forfeited
  
(43
)
  
10.68
 
 
  
   
 
Outstanding at January 31, 2014
  
2,842
  
$
11.19
    
   
 
Granted
  
387
   
21.61
 
 
  
   
 
Exercised
  
(655
)
  
11.47
 
 
  
   
 
Expired
  
(22
)
  
12.68
 
 
  
   
 
Forfeited
  
(53
)
  
12.31
 
 
  
   
 
Outstanding at January 31, 2015
  
2,499
  
$
12.69
        
Granted
  
380
   
25.34
    
   
 
Exercised
  
(266
)
  
10.69
    
   
 
Expired
  
(12
)
  
14.22
    
   
 
Forfeited
  
(5
)
  
12.05
    
   
 
Outstanding at January 31, 2016
  
2,596
  
$
14.74
 
4.8
 $
12,995
 
Vested and expected to vest at January 31, 2016 (1)
  
2,591
  
$
14.75
 
4.8
 $
12,963
 
Vested and exercisable at January 31, 2016
  
1,521
  
$
11.50
 
3.8
 $
10,494
 
 
(1)
The expected-to-vest options and SARs are the result of applying the pre-vesting forfeiture rate assumptions to total outstanding options and SARs.
Summary of activity for RSUs
The following table summarizes the activity for RSUs for the fiscal years ended January 31, 2016, 2015 and 2014:

  
RSUs
  
Weighted
Average
Grant Date
Fair Value
 
  
(in thousands)
    
Restricted stock at January 31, 2013
  
385
  
$
10.49
 
Granted
  
231
   
11.20
 
Released (1)
  
(165
)
  
10.05
 
Forfeited
  
(21
)
  
11.14
 
Restricted stock at January 31, 2014
  
430
  
$
11.02
 
Granted
  
287
   
21.25
 
Released (1)
  
(167
)
  
11.92
 
Forfeited
  
(47
)
  
14.00
 
Restricted stock at January 31, 2015
  
503
  
$
16.27
 
Granted
  
326
   
24.75
 
Released (1)
  
(192
)
  
15.58
 
Forfeited
  
(20
)
  
18.93
 
Restricted stock at January 31, 2016
  
617
  
$
20.91
 
 
(1)
The number of RSUs released includes shares withheld on behalf of employees to satisfy minimum statutory tax withholding requirements. During the fiscal years ended January 31, 2016, 2015 and 2014, the Company withheld 52,000 shares, 45,000 shares and 47,000 shares, respectively, for payment of these taxes. The value of the withheld shares for the fiscal years ended January 31, 2016, 2015 and 2014 were $1.4 million, $1.0 million and $0.6 million, respectively.