|
Note 13 - Commitments and Contingencies (Details) (USD $)
|
0 Months Ended | 1 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Mar. 06, 2012
|
Apr. 26, 2011
|
Jan. 31, 2014
|
Jan. 31, 2013
|
Feb. 29, 2012
|
Sep. 02, 2011
|
May 13, 2011
|
Feb. 04, 2014
Subsequent Event [Member]
Including Accrued Liabilities [Member]
Chicony Power Technology Company Ltd [Member]
|
Feb. 04, 2014
Subsequent Event [Member]
Chicony Power Technology Company Ltd [Member]
|
Jan. 31, 2013
Previous Ownership Percentage (Member)
|
Jan. 31, 2013
New Ownership Percentage (Member)
|
Apr. 16, 2013
Additional Damages Sought [Member]
|
Jul. 24, 2012
product and freight costs (Member)
|
Apr. 30, 2010
Letter of Credit [Member]
|
Jan. 31, 2013
Minimum [Member]
|
Jan. 31, 2013
Maximum [Member]
|
|
| Note 13 - Commitments and Contingencies (Details) [Line Items] | ||||||||||||||||
| Operating Leases, Future Minimum Payments Due | $ 656,000 | |||||||||||||||
| Operating Leases, Rent Expense | 300,000 | 300,000 | ||||||||||||||
| Issue Purchase Orders to Suppliers with Delivery Dates | 28 days | 42 days | ||||||||||||||
| Forecasts of Material and Finished Goods Requirements Rolling Period | 6 months | |||||||||||||||
| Sale of Stock, Number of Shares Issued in Transaction (in Shares) | 6,250,000 | |||||||||||||||
| Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners | 9.00% | 49.00% | ||||||||||||||
| Letters of Credit Outstanding, Amount | 77,000 | |||||||||||||||
| Loss Contingency, Damages Sought, Value | 1,200,000 | |||||||||||||||
| Loss Contingency Amount Claimed for Recovery of Damages | 4,900,000 | |||||||||||||||
| Gain Contingency, Unrecorded Amount | 15,000,000 | 1,400,000 | ||||||||||||||
| Litigation Settlement, Amount | 10,800,000 | 9,700,000 | ||||||||||||||
| Previously Accrued Seeking Payments | 1,100,000 | |||||||||||||||
| Number of Patents Relating to Power Technology | 5 | |||||||||||||||
| Number of Comaro Patents | 5 | |||||||||||||||
| Damages Sought In Lawsuit | $ 2,500,000 | |||||||||||||||