Balance Sheets (Parenthetical) (USD $) | Sep. 30, 2011 | Mar. 31, 2011 |
|---|---|---|
| Balance Sheets | ||
| Accounts receivable, allowance for uncollectible accounts | $ 15,000 | $ 15,000 |
| Common stock par value | $ 0.01 | $ 0.01 |
| Common stock, shares authorized | 6,000,000 | 6,000,000 |
| Common stock shares, issued | 4,776,198 | 4,776,198 |
| Common stock shares, outstanding | 4,776,198 | 4,776,198 |