Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Aug. 31, 2020	Nov. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 330,282	$ 324,002
Other comprehensive income (loss) before reclassifications, net of tax	(3,627)
Ending balance	368,166	330,282
Other comprehensive income (loss), tax	1,700	400
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(29,974)	(28,176)
Ending balance	(33,601)	(29,974)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(28,393)
Other comprehensive income (loss) before reclassifications, net of tax	374
Ending balance	(28,019)	(28,393)
Unrealized (Losses) Gains on Investments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(30)
Other comprehensive income (loss) before reclassifications, net of tax	105
Ending balance	75	(30)
Unrealized Losses on Hedging Activity
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(1,551)
Other comprehensive income (loss) before reclassifications, net of tax	(4,106)
Ending balance	$ (5,657)	$ (1,551)