Note 12 - Net Revenue and Gross Profit by Segments (Details) - USD ($) $ in Thousands	3 Months Ended
Apr. 30, 2016	May. 02, 2015
Connected Smart TV Platforms [Member]
Revenue, Net	$ 43,247	$ 43,149
IoT Devices [Member]
Revenue, Net	10,337	12,457
License and Other [Member]
Revenue, Net	191	306
Revenue, Net	$ 53,775	$ 55,912

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Name:	us-gaap_SalesRevenueNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration