Note 6 - Goodwill and Intangible Assets (Details Textual)	9 Months Ended	12 Months Ended
	Jan. 01, 2017	Mar. 27, 2016
Number of Operating Segments	1
Technology-Based Intangible Assets [Member]
Finite-Lived Intangible Asset, Useful Life	3 years 328 days	4 years 219 days
Technology-Based Intangible Assets [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	2 years
Technology-Based Intangible Assets [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	9 years
Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life	3 years	3 years 219 days
Customer Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	5 years
Customer Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	7 years
Distribution Rights [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	7 years
Patented Technology [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	6 years
Trade Names [Member] | Minimum [Member]
Finite-Lived Intangible Asset, Useful Life	3 years
Trade Names [Member] | Maximum [Member]
Finite-Lived Intangible Asset, Useful Life	6 years