Note 7 - Customer and Supplier Concentrations (Detail) - Customers Providing 10 Percent or More of Company's Revenue (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2012	Oct. 31, 2011
Total revenue (in Dollars)	$ 1,135	$ 2,252	$ 5,018	$ 7,128
Total revenue	100.00%	100.00%	100.00%	100.00%
Balance (in Dollars)	1,119	2,202	4,980	7,008
Percent	99.00%	98.00%	99.00%	98.00%
Dell Inc And Affiliates [Member]
Balance (in Dollars)		376	67	1,061
Percent		17.00%	1.00%	15.00%
Lenovo Information Products Co Ltd [Member]
Balance (in Dollars)	$ 1,119	$ 1,826	$ 4,913	$ 4,773
Percent	99.00%	81.00%	98.00%	67.00%

Amount of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 42

-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 131

-Paragraph 39

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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