Note 13 - Other Income (Expense), Net - Summary of Other Income (Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
Nov. 30, 2020	Nov. 30, 2019	Nov. 30, 2018
Interest income	$ 1,744	$ 4,190	$ 1,998
Change in fair market value of marketable securities	431	93	(0)
Foreign exchange gain (loss)	(606)	20	(171)
Other gain (loss)	0	92	(76)
Nonoperating Income (Expense), Total	$ 1,569	$ 4,395	$ 1,751

Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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