Nature of Business and Summary of Significant Accounting Policies (Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, Beginning of Period	$ (13,726)	$ (11,659)
Other comprehensive (loss) income before reclassifications	(10,902)	(3,684)
Amounts reclassified from accumulated other comprehensive (loss) income		1,617
Total other comprehensive (loss) income, net of tax	(10,902)	(2,067)	$ (895)
Balance, End of Period	(24,628)	(13,726)	(11,659)
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, Beginning of Period	(13,733)	(9,249)
Other comprehensive (loss) income before reclassifications	(10,849)	(4,484)
Amounts reclassified from accumulated other comprehensive (loss) income		0
Total other comprehensive (loss) income, net of tax	(10,849)	(4,484)
Balance, End of Period	(24,582)	(13,733)	(9,249)
Unrealized Gains (Losses) on Investments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, Beginning of Period	7	(2,410)
Other comprehensive (loss) income before reclassifications	(53)	800
Amounts reclassified from accumulated other comprehensive (loss) income		1,617
Total other comprehensive (loss) income, net of tax	(53)	2,417
Balance, End of Period	$ (46)	$ 7	$ (2,410)