Stock-Based Compensation (Summary of Stock Option Activity) (Details) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Nov. 30, 2019 USD ($) $ / shares shares
Shares
Beginning balance (in shares) | shares	1,107
Granted (in shares) | shares	655
Exercised (in shares) | shares	(119)
Canceled (in shares) | shares	(220)
Ending balance (in shares) | shares	1,423
Exercisable (in shares) | shares	497
Vested or expected to vest (in shares) | shares	1,423
Weighted Average Exercise Price
Beginning of year (in dollars per share)	$ 37.82
Granted (in dollars per share)	35.10
Exercised (in dollars per share)	30.47
Canceled (in dollars per share)	37.31
End of year (in dollars per share)	37.26
Exercisable (in dollars per share)	36.70
Vested or expected to vest (in dollars per share)	$ 37.26
Weighted Average Remaining Contractual Term
Options Outstanding (in years)	5 years 1 month 20 days
Exercisable (in years)	4 years 5 months 26 days
Vested or expected to vest (in years)	5 years 1 month 20 days
Aggregate Intrinsic Value
Options outstanding | $	$ 9,782
Exercisable | $	3,849
Vested or expected to vest | $	$ 9,782
Share price (in dollars per share)	$ 41.92