Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	May 31, 2020	Nov. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 330,282	$ 324,002
Other comprehensive (loss) income before reclassifications, net of tax	(8,270)
Ending balance	339,961	330,282
Other comprehensive income (loss), tax	1,900	400
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(29,974)	(28,176)
Ending balance	(38,244)	(29,974)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(28,393)
Other comprehensive (loss) income before reclassifications, net of tax	(4,190)
Ending balance	(32,583)	(28,393)
Unrealized (Losses) Gains on Investments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(30)
Other comprehensive (loss) income before reclassifications, net of tax	84
Ending balance	54	(30)
Unrealized (Losses) Gains on Investments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(1,551)
Other comprehensive (loss) income before reclassifications, net of tax	(4,164)
Ending balance	$ (5,715)	$ (1,551)