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Stock-Based Compensation
6 Months Ended
May 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock-Based Compensation
Stock-Based Compensation

Stock-based compensation expense reflects the fair value of stock-based awards, less the present value of expected dividends, measured at the grant date and recognized over the relevant service period. We estimate the fair value of each stock-based award on the measurement date using the current market price of the stock or the Black-Scholes option valuation model.

In addition, during each fiscal year from 2014 through 2017 we granted performance-based restricted stock units that include a three-year market condition under a Long-Term Incentive Plan (“LTIP”) where the performance measurement period is three years. Vesting of the LTIP awards is based on our level of attainment of specified total shareholder return (TSR) targets relative to the percentage appreciation of a specified index of companies for the respective three year periods and is also subject to the continued employment of the grantees. In order to estimate the fair value of such awards, we used a Monte Carlo Simulation valuation model.

The Black-Scholes and Monte Carlo Simulation valuation models incorporate assumptions as to stock price volatility, the expected life of options or awards, a risk-free interest rate and dividend yield. We recognize stock-based compensation expense related to options and restricted stock units on a straight-line basis over the service period of the award, which is generally 4 years for options and 3 years for restricted stock units. We recognize stock-based compensation expense related to performance stock units and our employee stock purchase plan using an accelerated attribution method.

The following table provides the classification of stock-based compensation as reflected in our condensed consolidated statements of operations (in thousands):
 
 
Three Months Ended
 
Six Months Ended
 
May 31,
2017
 
May 31,
2016
 
May 31,
2017
 
May 31,
2016
Cost of maintenance and services
$
294

 
$
180

 
$
551

 
$
376

Sales and marketing
200

 
962

 
563

 
2,041

Product development
1,158

 
2,397

 
1,054

 
5,077

General and administrative
1,981

 
2,754

 
3,095

 
5,737

Total stock-based compensation
$
3,633

 
$
6,293

 
$
5,263

 
$
13,231