Note 10 - Revenue, Deferred Revenue and Accounts Receivable - Revenue Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2026	May 31, 2025	May 31, 2026	May 31, 2025
Net revenue	$ 16,387	$ 28,505	$ 45,436	$ 54,695
Net revenue	16,387	28,505	45,436	54,695
Product [Member]
Net revenue	16,669	27,697	45,490	53,884
Net revenue	16,669	27,697	45,490	53,884
Royalty [Member]
Net revenue	(282)	808	(54)	811
Net revenue	(282)	808	(54)	811
Wholesale (dealer/distributors) [Member]
Net revenue	5,670	10,857	16,370	17,181
Net revenue	5,670	10,857	16,370	17,181
Wholesale (dealer/distributors) [Member] \| International [Member]
Net revenue	1,002	2,515	1,920	4,257
Net revenue	1,002	2,515	1,920	4,257
Wholesale (dealer/distributors) [Member] \| Byrna Dedicated Dealers [Member]
Net revenue	3,993	7,504	12,992	11,760
Net revenue	3,993	7,504	12,992	11,760
Wholesale (dealer/distributors) [Member] \| Law Enforcement, Schools and Pvt Security [Member]
Net revenue	54	61	128	86
Net revenue	54	61	128	86
Wholesale (dealer/distributors) [Member] \| Retail Stores [Member]
Net revenue	621	777	1,330	1,078
Net revenue	621	777	1,330	1,078
E-commerce [Member]
Net revenue	10,999	16,840	29,120	36,703
Net revenue	10,999	16,840	29,120	36,703
E-commerce [Member] \| International [Member]
Net revenue	572	266	1,046	736
Net revenue	572	266	1,046	736
E-commerce [Member] \| Web [Member]
Net revenue	10,427	16,574	28,074	35,967
Net revenue	10,427	16,574	28,074	35,967
Royalties [Member]
Net revenue	(282)	808	(54)	811
Net revenue	(282)	808	(54)	811
United States and Mexico [Member]
Net revenue	15,190	25,037	42,869	49,155
Net revenue	15,190	25,037	42,869	49,155
SOUTH AFRICA
Net revenue	1	283	1	458
Net revenue	1	283	1	458
Europe/South America/Asia [Member]
Net revenue	555	2,872	1,200	4,178
Net revenue	555	2,872	1,200	4,178
CANADA
Net revenue	641	313	1,366	904
Net revenue	$ 641	$ 313	$ 1,366	$ 904