Note 7 - Transactions Involving the Directors Plans (Details) - Employee Plans [Member] - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Sep. 30, 2015 |
Sep. 30, 2014 |
Sep. 30, 2013 |
|
| Outstanding October 1, (in shares) | 22,000 | 31,000 | 42,000 |
| Outstanding October 1, (in dollars per share) | $ 5.30 | $ 5.57 | $ 5.62 |
| Granted (in shares) | |||
| Granted (in dollars per share) | |||
| Canceled/expired (in shares) | (16,000) | (9,000) | (11,000) |
| Canceled/expired (in dollars per share) | $ 6 | $ 6.23 | $ 3.55 |
| Outstanding September 30, ($2.925 to $11.00 per share) (in shares) | 6,000 | 22,000 | 31,000 |
| Outstanding September 30, ($2.925 to $11.00 per share) (in dollars per share) | $ 3.44 | $ 5.30 | $ 5.57 |
| Exercisable September 30, (in shares) | 6,000 | 20,000 | 25,000 |
| Exercisable September 30, (in dollars per share) | $ 3.44 | $ 5.54 | $ 6.20 |