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Note 12 - Share-based Compensation (Details Textual)	6 Months Ended
	May 31, 2023 USD ($) shares
Statement [Line Items]
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | $	$ 5,095,000
Share-Based Payment Arrangement, Option [Member]
Statement [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares | shares	3,739,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	2 years
Performance Share Units [Member]
Statement [Line Items]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	2 years 6 months
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $	$ 5,727,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number | shares	1,605,000

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