Note 13 - Segment and Geographical Information (Tables)

9 Months Ended

Oct. 31, 2015

Geographic Concentration Risk [Member]

Notes Tables

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

	Three Months Ended				Nine Months Ended
	October 31 , 201 5		November 1 , 201 4		October 31 , 201 5		November 1 , 201 4
China, including Hong Kong	$	26,556	$	20,341	$	69,861	$	51,159
Taiwan		15,355		7,615		39,520		18,605
United States		11,300		4,007		33,395		13,416
Thailand		1,428		14,191		11,021		28,472
Rest of the world		6,942		7,630		22,003		21,815
Net revenue	$	61,581	$	53,784	$	175,800	$	133,467

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Three Months Ended				Nine Months Ended
	October 31 , 201 5		November 1 , 201 4		October 31 , 201 5		November 1 , 201 4
Smart TV	$	32,244	$	16,570	$	78,378	$	32,667
Media Connectivity		14,003		23,022		43,149		56,968
IoT Devices		10,209		7,182		35,637		19,898
Set-top Box		4,744		6,759		17,582		17,976
License and other		381		251		1,054		5,958
Net revenue	$	61,581	$	53,784	$	175,800	$	133,467

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

	Three Months Ended				Nine Months Ended
	October 31 , 201 5		November 1 , 201 4		October 31 , 201 5		November 1 , 201 4
Asia	$	47,691	$	46,567	$	132,045	$	109,885
North America		11,464		3,986		33,698		13,532
Europe		2,426		3,023		8,207		7,385
Other Regions		-		208		1,850		2,665
Net revenue	$	61,581	$	53,784	$	175,800	$	133,467