Note 8 - Income Taxes (Details Textual) $ in Thousands |
9 Months Ended |
|---|---|
|
Dec. 31, 2016
USD ($)
| |
| Unrecognized Tax Benefits | $ 0 |
| Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit | 0 |
| Unrecognized Tax Benefits, Interest on Income Taxes Accrued | $ 0 |
| Open Tax Year | 1999 |
| Earliest Tax Year [Member] | |
| Open Tax Year | 2013 |
| Latest Tax Year [Member] | |
| Open Tax Year | 2015 |