Note 10 - Goodwill and Intangible Assets (Details) (USD $)	3 Months Ended		12 Months Ended			3 Months Ended			0 Months Ended	12 Months Ended
	Sep. 30, 2012	Apr. 01, 2012	Mar. 30, 2014	Mar. 31, 2013	Apr. 01, 2012	Apr. 01, 2012 Write Off Of Abandoned IPR&D [Member]	Apr. 01, 2012 Amortization of Purchased Intangible Assets [Member]	Apr. 01, 2012 Amortization of Existing Technology [Member]	Jul. 05, 2013 Cadeka [Member]	Mar. 30, 2014 Cadeka [Member]	Mar. 30, 2014 Stretch [Member]	Mar. 31, 2013 Altior [Member]	Mar. 30, 2014 Distribution Rights [Member]	Mar. 30, 2014 Trade Names [Member]	Mar. 30, 2014 Minimum [Member] Existing Technology [Member]	Mar. 30, 2014 Minimum [Member] Patented Technology [Member]	Mar. 30, 2014 Minimum [Member] Customer Relationships [Member]	Mar. 30, 2014 Maximum [Member] Existing Technology [Member]	Mar. 30, 2014 Maximum [Member] Patented Technology [Member]	Mar. 30, 2014 Maximum [Member] Customer Relationships [Member]
Note 10 - Goodwill and Intangible Assets (Details) [Line Items]
Number of Operating Segments			1
Goodwill, Impairment Loss			$ 0	$ 0	$ 0
Goodwill, Acquired During Period									19,200,000	19,400,000	700,000	7,200,000
Finite-Lived Intangible Asset, Useful Life													6 years	3 years	2 years	5 years	5 years	9 years	6 years	7 years
Impairment of Intangible Assets (Excluding Goodwill)			1,636,000	0	0
Proceeds from Sale of Intangible Assets	500,000
Gain (Loss) on Disposition of Intangible Assets	223,000			223,000
Impairment of Intangible Assets, Finite-lived		$ 1,700,000	$ 1,635,000			$ 300,000	$ 1,100,000	$ 300,000