Note 5 - Customer and Supplier Concentrations (Detail) - Companies Comprising 10 Percent or More of our Gross Accounts Payable (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013	Jan. 31, 2013
Total gross accounts payable (in Dollars)	$ 3,814	$ 3,688
Total gross accounts payable	100.00%	100.00%
Balance (in Dollars)	2,854	2,714
Percentage	75.00%	74.00%
Chicony Power Technology Company Ltd [Member]
Balance (in Dollars)	1,100	1,100
Percentage	29.00%	30.00%
Pillsbury Winthrop Shaw Pittman LLP [Member]
Balance (in Dollars)	$ 1,754	$ 1,614
Percentage	46.00%	44.00%

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Subparagraph a

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(a))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant