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Stock-Based Compensation | 9 Months Ended
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Aug. 31, 2020
Share-based Payment Arrangement [Abstract] |
Stock-Based Compensation | Stock-Based Compensation Stock Options. We estimate the grant-date fair value of stock options using the Black-Scholes option-pricing model. The following table summarizes stock option transactions for the nine months ended August 31, 2020:
| Options |  | Weighted Average Exercise Price
Options outstanding at beginning of period | 4,163,481 |  |  | $ | 13.00 |
Granted | — |  |  | — |
Exercised | (708,372 | ) |  | 11.77 |
Cancelled | (6,000 | ) |  | 45.16 |
Options outstanding at end of period | 3,449,109 |  |  | $ | 13.20 |
Options exercisable at end of period | 3,449,109 |  |  | $ | 13.20 |
We have not granted any new stock option awards since 2016. As of August 31, 2020, stock options outstanding and stock options exercisable each had a weighted average remaining contractual life of 3.9 years. At August 31, 2020, there was no unrecognized compensation expense related to stock option awards as all these awards were fully vested. For the three-month and nine-month periods ended August 31, 2020, there was no stock-based compensation expense associated with stock options. For the three-month and nine-month periods ended August 31, 2019, stock-based compensation expense associated with stock options was nominal. Stock options outstanding and stock options exercisable each had an aggregate intrinsic value of $77.8 million at August 31, 2020. (The intrinsic value of a stock option is the amount by which the market value of a share of the underlying common stock exceeds the exercise price of the stock option.) Other Stock-Based Awards. From time to time, we grant restricted stock and PSUs to various employees as a compensation benefit. We recognized total compensation expense of $4.6 million and $4.5 million for the three months ended August 31, 2020 and 2019, respectively, related to restricted stock and PSUs. For the nine months ended August 31, 2020 and 2019, we recognized total compensation expense of $12.7 million and $14.4 million, respectively, related to restricted stock and PSUs.

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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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- References No definition available. + Details
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