Note 14 - Segment and Geographical Information (Details) - Reconciliation of Target Market Profit to Consolidated Loss before Income Taxes (USD $) In Thousands, unless otherwise specified	1 Months Ended	3 Months Ended	6 Months Ended
Apr. 30, 2013	Aug. 02, 2014	Aug. 03, 2013	Aug. 02, 2014	Aug. 03, 2013
Reconciliation of Target Market Profit to Consolidated Loss before Income Taxes [Abstract]
Total gross profit from target markets		$ 21,889	$ 28,066	$ 42,114	$ 55,012
Operating expenses		27,684	29,913	56,352	60,959
Gain on sale of development project	1,100				1,079
Interest and other income, net		372	121	320	812
Loss before income taxes		$ (5,423)	$ (1,726)	$ (13,918)	$ (4,056)

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The gains and losses included in earning resulting from the sale of a project.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ References

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(1)(i))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.7)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Article 5

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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