Note 12 - Share-based Compensation - Summary of Stock Options Outstanding (Details) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Feb. 28, 2022 USD ($) $ / shares shares
Balance (in shares) | shares	8,602
Weighted average exercise price outstanding, balance (in dollars per share) | $ / shares	$ 5.43
Granted (in shares) | shares	1,887
Granted, weighted average exercise price (in dollars per share) | $ / shares	$ 6.76
Exercised (in shares) | shares	(365)
Exercised, weighted average exercise price (in dollars per share) | $ / shares	$ 4.21
Cancelled (in shares) | shares	(2)
Cancelled, weighted average exercise price (in dollars per share) | $ / shares	$ 7.59
Balance (in shares) | shares	10,122
Weighted average exercise price outstanding, balance (in dollars per share) | $ / shares	$ 5.73
Outstanding, weighted-average remaining contractual term (Year)	2 years 6 months 3 days
Outstanding, aggregate intrinsic value | $	$ 17,002
Vested and exercisable as of February 28, 2022 (in shares) | shares	6,718
Vested and exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 4.75
Vested and exercisable, weighted-average remaining contractual term (Year)	1 year 8 months 8 days
Vested and exercisable, aggregate intrinsic value | $	$ 16,471