Note 16 - Stock-based Compensation - Options Outstanding and Exercisable (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 30, 2021
Options Outstanding, Weighted average exercise price (in dollars per share)	$ 1.9	$ 1.79	$ 1.63
Options Outstanding, Number of options (in shares)	1,376,554	1,489,328	1,684,193
Options Outstanding, Weighted-average remaining contractual life (Year)	2 years 9 months 18 days
Options Outstanding, Aggregate Intrinsic Value	$ 7,059
Options Exercisable, Number of options (in shares)	1,138,940
Options Exercisable, Weighted average exercise price (in dollars per share)	$ 2.3
Options Exercisable, Weighted average remaining contractual life (Year)	2 years
Options Exercisable, Aggregate Intrinsic Value	$ 5,392
Exercise Price Range One [Member]
Options Outstanding, Weighted average exercise price (in dollars per share)	$ 0.01
Options Outstanding, Number of options (in shares)	315,671
Options Outstanding, Weighted-average remaining contractual life (Year)	6 years 9 months 18 days
Options Outstanding, Aggregate Intrinsic Value	$ 2,216
Options Exercisable, Number of options (in shares)	78,057
Options Exercisable, Weighted average exercise price (in dollars per share)	$ 0.01
Options Exercisable, Weighted average remaining contractual life (Year)	6 years 9 months 18 days
Options Exercisable, Aggregate Intrinsic Value	$ 548
Exercise Price Range Two [Member]
Options Outstanding, Weighted average exercise price (in dollars per share)	$ 0.87
Options Outstanding, Number of options (in shares)	736,810
Options Outstanding, Weighted-average remaining contractual life (Year)	1 year 3 months 18 days
Options Outstanding, Aggregate Intrinsic Value	$ 4,539
Options Exercisable, Number of options (in shares)	736,810
Options Exercisable, Weighted average exercise price (in dollars per share)	$ 0.87
Options Exercisable, Weighted average remaining contractual life (Year)	1 year 3 months 18 days
Options Exercisable, Aggregate Intrinsic Value	$ 4,539
Exercise Price Range Three [Member]
Options Outstanding, Weighted average exercise price (in dollars per share)	$ 6.09
Options Outstanding, Number of options (in shares)	324,073
Options Outstanding, Weighted-average remaining contractual life (Year)	2 years 4 months 24 days
Options Exercisable, Number of options (in shares)	324,073
Options Exercisable, Weighted average exercise price (in dollars per share)	$ 6.09
Options Exercisable, Weighted average remaining contractual life (Year)	2 years 4 months 24 days
Options Exercisable, Aggregate Intrinsic Value	$ 305