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Stock-Based Compensation | 9 Months Ended
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Aug. 31, 2021
Share-based Payment Arrangement [Abstract] |
Stock-Based Compensation | Stock-Based Compensation We issue restricted stock units, performance-based restricted stock units and stock options under our equity plans. We also issue common stock under our employee stock purchase plan that permits employees to purchase shares through accumulated payroll deductions. Stock-based compensation expense reflects the fair value of stock-based awards, less the present value of expected dividends when applicable, 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, the Black-Scholes option valuation model, or the Monte Carlo Simulation valuation model. In 2019, 2020 and 2021, we granted performance-based restricted stock units that include two performance metrics under our Long-Term Incentive Plan ("LTIP") where the performance measurement period is three years. Vesting of the LTIP awards on the 2019 and 2020 plan is based on the following: (i) 50% is based on our level of attainment of specified total stockholder return ("TSR") targets relative to the percentage appreciation of a specified index of companies for the respective three-year periods, and (ii) 50% is based on achievement of a three-year cumulative performance condition (operating income). For the 2021 plan, the vesting terms were changed to the following: (i) 25% is based on our level of attainment of specified TSR targets relative to the percentage appreciation of a specified index of companies for the respective three-year periods, and (ii) 75% is based on achievement of a three-year cumulative operating income. In order to estimate the fair value of such awards, we used a Monte Carlo Simulation valuation model for the market condition portion of the award, and used the closing price of our common stock on the date of grant for the portion related to the performance condition. 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 our employee stock purchase plan using an accelerated attribution method. The following table provides the classification of stock-based compensation as reflected on our condensed consolidated statements of operations (in thousands):
| Three Months Ended |  | Nine Months Ended
| August 31, 2021 |  | August 31, 2020 |  | August 31, 2021 |  | August 31, 2020
Cost of maintenance and services | $ | 374 |  |  | $ | 322 |  |  | $ | 1,234 |  |  | $ | 979 |
Sales and marketing | 1,424 |  |  | 1,035 |  |  | 4,679 |  |  | 3,195 |
Product development | 1,848 |  |  | 1,693 |  |  | 6,179 |  |  | 5,518 |
General and administrative | 3,193 |  |  | 2,635 |  |  | 9,893 |  |  | 7,667 |
Total stock-based compensation | $ | 6,839 |  |  | $ | 5,685 |  |  | $ | 21,985 |  |  | $ | 17,359 |

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- Definition The entire disclosure for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details
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