Note 7 - Income Taxes (Details Textual) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2016 |
Mar. 31, 2015 |
Mar. 31, 2014 |
|
| Earliest Tax Year [Member] | |||
| Open Tax Year | 1999 | ||
| Latest Tax Year [Member] | |||
| Open Tax Year | 2012 | ||
| Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation | $ 352,294 | $ 24,288 | $ 57,472 |
| 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 | ||