Note 10 - Stock Repurchase Plan (Details Textual) - USD ($) |
3 Months Ended | |
|---|---|---|
Jun. 30, 2015 |
Jan. 21, 2009 |
|
| Treasury Stock, Shares, Acquired | 0 | |
| Stock Repurchase Program, Authorized Amount | $ 2,500,000 | |
| Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ 1,236,595 |