Note 5 - Fair Value (Details) - Change in Fair Value of our Purchase Consideration Liabilities (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Dec. 28, 2014	Apr. 30, 2014
Business Acquisition, Contingent Consideration [Line Items]
Balance		$ 4,343
Acquisition Related Contingent Consideration [Member] | Altior [Member]
Business Acquisition, Contingent Consideration [Line Items]
Balance	2,973
Fair value adjustment	(2,973)
Acquisition Related Contingent Consideration [Member] | Cadeka Microcircuits [Member]
Business Acquisition, Contingent Consideration [Line Items]
Balance	1,370
Fair value adjustment	(1,370)
Altior [Member]
Business Acquisition, Contingent Consideration [Line Items]
Balance		2,973
Cadeka Microcircuits [Member]
Business Acquisition, Contingent Consideration [Line Items]
Balance		$ 1,370