Note 18 - Income Taxes (Details) - Reconciliations of Income Tax Provision (USD $) In Thousands, unless otherwise specified	12 Months Ended
Mar. 29, 2015	Mar. 30, 2014	Mar. 31, 2013
Reconciliations of Income Tax Provision [Abstract]
Income tax benefit at statutory rate	$ (15,441)	$ (937)	$ 593
State income taxes, net of federal tax benefit	(64)	(1)	60
Deferred tax assets not benefited	9,052	(1,972)	(378)
Tax credits	(1,182)	(757)	(539)
Stock-based compensation	435	(427)	258
Foreign rate differential	(1,927)	156	148
Prior year tax expense true-up		(10)	11
Fair value adjustment	(1,527)	(3,732)
Investment in US property	8,840	45	54
OCI tax effect clearance	828
Acquisition cost	2,092	293
Others, net	(217)	(1,136)	(1,396)
Provision for (benefit from) income taxes	$ 889us-gaap_IncomeTaxExpenseBenefit	$ (8,478)us-gaap_IncomeTaxExpenseBenefit	$ (1,189)us-gaap_IncomeTaxExpenseBenefit

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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