Byrna Technologies Inc. Quarterly report pursuant to Section 13 or 15(d)

Schedule of Segment Reporting Information, by Segment (Details) - USD ($)	3 Months Ended		9 Months Ended
	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2019	Aug. 31, 2018	Nov. 30, 2018
Segment Reporting Information [Line Items]
Sales	$ 307,101	$ 53,257	$ 423,977	$ 220,115
Assets	4,112,436		4,112,436		$ 2,657,085
Operating Segments [Member] \| SDI USA [Member]
Segment Reporting Information [Line Items]
Assets	3,374,139		3,374,139		2,629,315
Operating Segments [Member] \| SDI SA [Member]
Segment Reporting Information [Line Items]
Assets	687,882		687,882
Operating Segments [Member] \| SDI Canada [Member]
Segment Reporting Information [Line Items]
Assets	$ 50,415		50,415		$ 27,770
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Sales			(157,318)	(83,661)
Sales [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales			581,295	303,776
Sales [Member] \| Operating Segments [Member] \| SDI USA [Member]
Segment Reporting Information [Line Items]
Sales			278,676	188,304
Sales [Member] \| Operating Segments [Member] \| SDI SA [Member]
Segment Reporting Information [Line Items]
Sales			266,417
Sales [Member] \| Operating Segments [Member] \| SDI Canada [Member]
Segment Reporting Information [Line Items]
Sales			$ 36,202	$ 115,472