Note 5 - Fair Value (Details) - Change in Fair Value of our Purchase Consideration Liabilities - Acquisition Related Contingent Consideration [Member] - USD ($) $ in Thousands	12 Months Ended
Mar. 29, 2015	Mar. 30, 2014	Mar. 31, 2013
Altior [Member]
Business Acquisition, Contingent Consideration [Line Items]
Balance	$ 0	$ 2,973	$ 10,138
Fair value adjustment	(2,973)	(7,165)
Estimated contingent consideration liability			10,138
Cadeka Microcircuits [Member]
Business Acquisition, Contingent Consideration [Line Items]
Balance	0	1,370	$ 0
Fair value adjustment	$ (1,370)	(3,290)
Estimated contingent consideration liability		$ 4,660

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Amount of gain (loss) recognized on the income statement for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

Amount of purchases of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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