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Stock-Based Compensation (Summary of Stock Option Activity) (Details)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Nov. 30, 2020
USD ($)
$ / shares
shares
Shares  
Beginning balance (in shares) | shares 1,423
Granted (in shares) | shares 611
Exercised (in shares) | shares (137)
Canceled (in shares) | shares (224)
Ending balance (in shares) | shares 1,673
Exercisable (in shares) | shares 711
Vested or expected to vest (in shares) | shares 1,672
Weighted Average Exercise Price  
Beginning of year (in dollars per share) $ 37.26
Granted (in dollars per share) 43.34
Exercised (in dollars per share) 31.84
Canceled (in dollars per share) 42.08
End of year (in dollars per share) 39.28
Exercisable (in dollars per share) 37.28
Vested or expected to vest (in dollars per share) $ 39.28
Weighted Average Remaining Contractual Term  
Options Outstanding (in years) 4 years 10 months 24 days
Exercisable (in years) 4 years
Vested or expected to vest (in years) 4 years 10 months 24 days
Aggregate Intrinsic Value  
Options outstanding | $ $ 7,125
Exercisable | $ 4,315
Vested or expected to vest | $ $ 7,125
Share price (in dollars per share) $ 40.39