Note 11 - Other Income (Expense), Net - Summary of Other Income (Expense) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021
Change in fair market value of marketable securities	$ 213	$ 258	$ 713	$ 484
Interest income	151	80	287	258
Foreign exchange loss	(47)	(1,043)	(159)	(1,526)
Nonoperating Income (Expense), Total	$ 317	$ (705)	$ 841	$ (784)

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).

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 4
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Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
-Section 50
-Paragraph 1
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-Section 45
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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
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-Paragraph 2
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (c)
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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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