Note 11 - Significant Customers and Industry Segment Information - Segment Reporting Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Revenue	$ 11,768	$ 11,148
Interest expense, net	(252)	(607)
Depreciation	184	264
Income (loss) before income taxes	(685)	(895)
Assets	8,926	6,279
Gigatronics Division [Member]
Revenue	3,521	1,935
Interest expense, net	(252)	(607)
Depreciation	184	257
Income (loss) before income taxes	(3,392)	(4,521)
Assets	6,011	3,979
Microsource [Member]
Revenue	8,247	9,213
Interest expense, net
Depreciation		7
Income (loss) before income taxes	2,707	3,626
Assets	$ 2,915	$ 2,300