Note 11 - Share-based Compensation - Summary of Stock Options Outstanding (Details) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Aug. 31, 2024 USD ($) $ / shares shares	Aug. 31, 2024 USD ($) $ / shares shares
Balance, options (in shares) | shares		7,606,200
Balance, weighted average exercise price (in dollars per share) | $ / shares		$ 6.59
Granted, options (in shares) | shares		3,088,900
Granted, weighted average exercise price (in dollars per share) | $ / shares		$ 4.12
Exercised, options (in shares) | shares		(890,000)
Exercised, weighted average exercise price (in dollars per share) | $ / shares		$ 3.67
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares) | shares	765,663
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 4.96
Balance, options (in shares) | shares	9,039,437	9,039,437
Balance, weighted average exercise price (in dollars per share) | $ / shares	$ 6.17	$ 6.17
Balance, weighted average remaining contractual term (Year)		2 years 7 months 2 days
Balance, intrinsic value | $	$ 373	$ 373
Vested and exercisable, options (in shares) | shares	4,666,285	4,666,285
Vested and exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 7.41	$ 7.41
Vested and exercisable, weighted-average remaining contractual term (Year)		1 year 5 months 26 days
Vested and exercisable, aggregate intrinsic value | $	$ 0	$ 0