Note 18 - Income Taxes (Details) - Federal, State, and Canada Tax Credit Carryforwards, Net of Reserves (USD $) In Thousands, unless otherwise specified	Mar. 30, 2014
Internal Revenue Service (IRS) [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 9,618
State and Local Jurisdiction [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	19,186
Canada [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 5,135

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

Name:	us-gaap_OperatingLossCarryforwards
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant