Note 6 - Fair Value (Details) (USD $)	12 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Note 6 - Fair Value (Details) [Line Items]
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax	$ 828,000	$ 828,000
Available For Sale Securities Unrealized Losses Net Of Tax	1,100,000
Cadeka [Member]
Note 6 - Fair Value (Details) [Line Items]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Asset	(7,200,000)
Altior [Member]
Note 6 - Fair Value (Details) [Line Items]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Asset	$ (3,300,000)