Note 4 - Stock Based Compensation - Stock Option Activity (Details) |
3 Months Ended |
|---|---|
|
Dec. 31, 2015
$ / shares
shares
| |
| Outstanding at September 30, 2015 (in shares) | shares | 297,384 |
| Outstanding at September 30, 2015 (in dollars per share) | $ / shares | $ 5.29 |
| Exercised (in shares) | shares | (8,000) |
| Exercised (in dollars per share) | $ / shares | $ 6.36 |
| Outstanding at December 31, 2015 (in shares) | shares | 289,384 |
| Outstanding at December 31, 2015 (in dollars per share) | $ / shares | $ 5.26 |
| X | ||||||||||
- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
|
| X | ||||||||||
- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|