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Note 10 - Income Taxes (Details) - Components of net Deferred Tax Assets and Liabilities (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Mar. 31, 2013
--- | --- | ---
Current deferred tax assets: |  |
Accrued employee-related expenses | $ 298 | $ 125
Allowances and reserves | 701 | 226
Stock option deductible differences | 301 | 243
Inventory | 281 | 252
Property, plant and equipment | (1,434) | (1,320)
Goodwill and intangible assets | (3,453) | (1,044)
| (4,861) | (2,364)
| 1,878 | 846
Net deferred tax liability | (2,983) | (1,518)
Current Assets [Member] |  |
Current deferred tax assets: |  |
Net operating loss | 297 |
Noncurrent Liabilities [Member] |  |
Current deferred tax assets: |  |
Net operating loss | $ 26 |

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