v2.4.0.6

Note 13 - Commitments and Contingencies (Detail) (USD $) | 0 Months Ended | 1 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 06, 2012 | Apr. 26, 2011 | Jan. 31, 2013 | Jan. 31, 2012 | Feb. 29, 2012 | Sep. 02, 2011 | Jul. 31, 2011 | May 13, 2011 | Jan. 31, 2013 Cancelable (Member) | Jan. 31, 2013 Previous Ownership Percentage (Member) | Jan. 31, 2013 New Ownership Percentage (Member) | Apr. 16, 2013 Additional Damages Sought [Member] | Jan. 31, 2013 Legal Fees (Member) | Jan. 31, 2013 Possible Liability from Losing Lawsuit (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]
Operating Leases, Future Minimum Payments Due |  |  | $ 895,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Leases, Rent Expense |  |  | 300,000 | 300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Lease, Reduction of Space Occupied |  |  |  | 67.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Lease, Early Termination, Abated Base Rent |  |  |  | 60,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue Purchase Orders to Suppliers with Delivery Dates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | four | six
Forecasts of Material and Finished Goods Requirements Rolling Period |  |  | 6 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Recorded Unconditional Purchase Obligation |  |  | 1,500,000 |  |  |  | 380,000 |  | 300,000 |  |  |  |  |  |  |  |  |
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 | 2,500,000 | 1,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss Contingency Amount Claimed for Recovery of Damages |  |  |  |  |  |  |  | 4,900,000 |  |  |  |  |  |  |  |  |  |
Gain Contingency, Unrecorded Amount |  |  |  |  |  |  |  |  |  |  |  | 15,000,000 |  |  |  |  |  |
Previously Accrued Seeking Payments |  |  |  |  |  |  |  |  |  |  |  |  | $ 400,000 | $ 1,100,000 | $ 1,400,000 |  |  |
Number of Patents Relating to Power Technology |  |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |  |  |
Number of Comaro Patents |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  |

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