Note 8 - Income Taxes (Details Textual) |
6 Months Ended |
|---|---|
|
Sep. 30, 2015
USD ($)
| |
| Earliest Tax Year [Member] | |
| Open Tax Year | 1999 |
| Latest Tax Year [Member] | |
| Open Tax Year | 2014 |
| Unrecognized Tax Benefits | $ 0 |
| Unrecognized Tax Benefits, Interest on Income Taxes Accrued | $ 0 |