Note 4 - Fair Value (Details) - Quantitative Information About the Inputs and Valuation Methodologies (USD $) In Thousands, unless otherwise specified	Dec. 29, 2013	Mar. 31, 2013
Combination of Income and Marketable Approach [Member] | Altior [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Acquisition-related contingent consideration – fair value	$ 7,741
Combination of Income and Marketable Approach [Member] | Cadeka [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Acquisition-related contingent consideration – fair value	4,620
Altior [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Acquisition-related contingent consideration – fair value	7,741	10,138
Cadeka [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Acquisition-related contingent consideration – fair value	$ 4,620