Note 9 - Stock Repurchase Program (Details Textual) - Repurchase Program 2009 [Member] - USD ($) |
3 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Aug. 27, 2015 |
Jan. 21, 2009 |
|
| Stock Repurchase Program, Authorized Amount | $ 2,500,000 | ||
| Stock Repurchase Program Authorized Additional Amount | $ 5,000,000 | ||
| Stock Repurchased and Retired During Period, Value | $ 0 | ||
| Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ 4,540,806 |