v2.4.0.6

Note 5 - Customer and Supplier Concentrations (Detail) - Revenues by geographic location (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Apr. 30, 2013 | Apr. 30, 2012
Revenue | $ 1,413 | $ 2,201
North America [Member] |  |
Revenue | 46 | 41
Asia [Member] |  |
Revenue | 1,364 | 2,155
Other [Member] |  |
Revenue | $ 3 | $ 5

X
- Definition 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. + 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 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
Name: | us-gaap_SalesRevenueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration