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Note 7 - Accrued Liabilities (Detail) - Accrued liabilities (USD $)
In Thousands, unless otherwise specified |
Apr. 30, 2013
|
Jan. 31, 2013
|
|---|---|---|
| Accrued Liabilities | $ 2,411 | $ 1,789 |
|
Accrued Payroll and Related Expenses (Member)
|
||
| Accrued Liabilities | 136 | 147 |
|
Uninvoiced Materials and Services Received (Member)
|
||
| Accrued Liabilities | 1,750 | 1,269 |
|
Accrued Legal and Professional Fees (Member)
|
||
| Accrued Liabilities | 272 | 169 |
|
Accrued Warranty (Member)
|
||
| Accrued Liabilities | 68 | 68 |
|
Accrued - Other (Member)
|
||
| Accrued Liabilities | $ 185 | $ 136 |