Note 18 - Income Taxes (Details) - Components of Provision for (Benefit from) Income Taxes (USD $) In Thousands, unless otherwise specified	12 Months Ended
Mar. 29, 2015	Mar. 30, 2014	Mar. 31, 2013
Current:
Federal	$ 828us-gaap_CurrentFederalTaxExpenseBenefit	$ (1,350)us-gaap_CurrentFederalTaxExpenseBenefit	$ (1,255)us-gaap_CurrentFederalTaxExpenseBenefit
State	11	(93)	(73)
Foreign	404us-gaap_CurrentForeignTaxExpenseBenefit	(81)us-gaap_CurrentForeignTaxExpenseBenefit	114us-gaap_CurrentForeignTaxExpenseBenefit
Total current	1,243us-gaap_CurrentIncomeTaxExpenseBenefit	(1,524)us-gaap_CurrentIncomeTaxExpenseBenefit	(1,214)us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred:
Federal	39	(6,807)	23
State		(147)	2
Foreign	(393)
Total deferred	(354)us-gaap_DeferredIncomeTaxExpenseBenefit	(6,954)us-gaap_DeferredIncomeTaxExpenseBenefit	25us-gaap_DeferredIncomeTaxExpenseBenefit
Total provision for (benefit from) income taxes	$ 889us-gaap_IncomeTaxExpenseBenefit	$ (8,478)us-gaap_IncomeTaxExpenseBenefit	$ (1,189)us-gaap_IncomeTaxExpenseBenefit

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