Stock-Based Compensation (Summary of Stock Option Activity) (Details) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Nov. 30, 2017 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding, number of shares, beginning of year | shares	417
Granted, number of shares | shares	937
Exercised, number of shares | shares	(203)
Canceled, number of shares | shares	(149)
Options outstanding, number of shares, end of year | shares	1,002
Exercisable, November 30, 2016, number of shares | shares	269
Vested or expected to vest, November 30, 2016, number of shares | shares	875
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Options outstanding, weighted average exercise price, beginning of year (in dollars per share) | $ / shares	$ 24.10
Granted, weighted average exercise price (in dollars per share) | $ / shares	29.70
Exercised, weighted average exercise price (in dollars per share) | $ / shares	25.90
Canceled, weighted average exercise price (in dollars per share) | $ / shares	29.31
Options outstanding, weighted average exercise price, end of year (in dollars per share) | $ / shares	28.29
Exercisable, November 30, 2016, weighted average exercise price (in dollars per share) | $ / shares	24.09
Vested or expected to vest, November 30, 2016, weighted average exercise price (in dollars per share) | $ / shares	$ 28.06
Options Outstanding November 30, 2016, weighted average remaining contractual term (in years)	4 years 10 months 21 days
Exercisable, November 30, 2016 weighted average remaining contractual term (in years)	2 years 7 months 21 days
Vested or expected to vest, November 30, 2016, weighted average remaining contractual term (in years)	4 years 9 months 7 days
Options outstanding, November 30, 2016, aggregate intrinsic value | $	$ 13,077
Exercisable, November 30, 2016, aggregate intrinsic value | $	4,639
Vested or expected to vest, November 30, 2016, aggregate intrinsic value | $	$ 11,620