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Note 11 - Other Income (Expense), Net - Summary of Other Income (Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2023	May 31, 2022
Statement [Line Items]
Interest and dividend income	$ 1,350	$ 151	$ 2,679	$ 287
Gain on sale of mineral property	(0)	(0)	556	(0)
Change in fair market value of marketable securities	79	213	378	713
Foreign exchange gain (loss)	(5)	(47)	36	(159)
Nonoperating Income (Expense)	$ 1,424	$ 317	$ 3,649	$ 841

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