For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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-Subparagraph (a)
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Note 14 - Segment and Geographical Information (Details Textual)	3 Months Ended	12 Months Ended
	Apr. 29, 2017	Feb. 03, 2018	Jan. 30, 2016
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Arris Global [Member]
Concentration Risk, Percentage	19.00%
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Sunjet Components Corporation [Member]
Concentration Risk, Percentage	16.00%
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Silicon Application [Member]
Concentration Risk, Percentage	16.00%
License and Other [Member]
Percentage of Revenue During Period		0.00%	0.00%