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Note 8 - Stock Based Compensation (Tables) | 6 Months Ended
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Sep. 30, 2016
Notes Tables |
Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  | Shares |
Outstanding as of March 31, 2016 |  |  | 40,000 |
Activity during the three months ended September 30, 2016 |  |  |  |
Granted |  |  | - |
Exercised |  |  | - |
Canceled (forfeited/expired) |  |  | (30,000 | )
Outstanding as of September 30, 2016 |  |  | 10,000 |
Exerciseable as of September 30, 2016 |  |  | 10,000 |

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