Note 2 - Weighted Average Number of Shares (Details) - shares |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2016 |
Mar. 31, 2015 |
Mar. 31, 2014 |
|
| Basic (in shares) | 4,850,209 | 4,855,504 | 4,851,460 |
| Stock options (in shares) | 2,393 | 16,431 | 15,639 |
| Warrants (in shares) | 592 | ||
| Shares used in computing net income per share – diluted (in shares) | 4,852,602 | 4,871,935 | 4,867,691 |