Note 5 - Fair Value (Details) - Fair Value Inputs, Assets, Quantitative Information (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 29, 2014
Combination of Income and Marketable Approach [Member] | Altior [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Acquisition-related contingent consideration	$ 3,022
Combination of Income and Marketable Approach [Member] | Altior [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	6,725
Combination of Income and Marketable Approach [Member] | Altior [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	20,175
Combination of Income and Marketable Approach [Member] | Cadeka [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Acquisition-related contingent consideration	890
Combination of Income and Marketable Approach [Member] | Cadeka [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	8,400
Combination of Income and Marketable Approach [Member] | Cadeka [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	$ 18,000
Altior [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	1.00%
Altior [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	66.00%
Cadeka [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	2.00%
Cadeka [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range	30.00%