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

Schedule of Segment Reporting Information, by Segment (Details) - USD ($)	3 Months Ended		6 Months Ended
	May 31, 2019	May 31, 2018	May 31, 2019	May 31, 2018	Nov. 30, 2018
Segment Reporting Information [Line Items]
Sales	$ 105,769	$ 138,742	$ 116,876	$ 166,858
Assets	2,782,283		2,782,283		$ 2,657,085
Operating Segments [Member] \| SDI USA [Member]
Segment Reporting Information [Line Items]
Assets	2,155,355		2,155,355		2,629,315
Operating Segments [Member] \| SDI SA [Member]
Segment Reporting Information [Line Items]
Assets	570,643		570,643		0
Operating Segments [Member] \| SDI Canada [Member]
Segment Reporting Information [Line Items]
Assets	$ 56,285		56,285		$ 27,770
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Sales			(50,473)	(72,616)
Sales [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Sales			167,349	239,474
Sales [Member] \| Operating Segments [Member] \| SDI USA [Member]
Segment Reporting Information [Line Items]
Sales			74,570	139,705
Sales [Member] \| Operating Segments [Member] \| SDI SA [Member]
Segment Reporting Information [Line Items]
Sales			56,695	0
Sales [Member] \| Operating Segments [Member] \| SDI Canada [Member]
Segment Reporting Information [Line Items]
Sales			$ 36,084	$ 99,769