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Note 5 - Stockholders' Equity (Details) - Equty Award Activity, Restricted Stock
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9 Months Ended | |
|---|---|---|
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Jan. 31, 2014
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Apr. 30, 2013
|
|
| Equty Award Activity, Restricted Stock [Abstract] | ||
| Number of Shares | 11,146 | 11,007 |
| Granted | 4,608 | |
| Issued | 4,469 |