Note 6 - Fair Value (Details) - Fair Value Inputs, Assets, Quantitative Information (USD $) In Thousands, unless otherwise specified					12 Months Ended
	Mar. 30, 2014	Mar. 31, 2013	Mar. 30, 2014 Combination of Income and Marketable Approach [Member] Altior [Member]	Mar. 30, 2014 Combination of Income and Marketable Approach [Member] Cadeka [Member]	Mar. 30, 2014 Combination of Income and Marketable Approach [Member] Minimum [Member] Altior [Member]	Mar. 30, 2014 Combination of Income and Marketable Approach [Member] Minimum [Member] Cadeka [Member]	Mar. 30, 2014 Combination of Income and Marketable Approach [Member] Maximum [Member] Altior [Member]	Mar. 30, 2014 Combination of Income and Marketable Approach [Member] Maximum [Member] Cadeka [Member]	Mar. 30, 2014 Minimum [Member] Altior [Member]	Mar. 30, 2014 Minimum [Member] Cadeka [Member]	Mar. 30, 2014 Maximum [Member] Altior [Member]	Mar. 30, 2014 Maximum [Member] Cadeka [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Acquisition-related contingent consideration	$ 4,300	$ 10,100	$ 2,973	$ 1,370
Range					$ 6,725	$ 4,800	$ 20,175	$ 18,000
Range									1.00%	2.00%	66.00%	50.00%