|
Fair Value of Financial Instruments (Details) (USD $)
|
Apr. 30, 2013
|
Jul. 31, 2012
|
|---|---|---|
| Assets [Abstract] | ||
| Gross unrealized gains | $ 100,000 | $ 100,000 |
|
Recurring [Member]
|
||
| Assets [Abstract] | ||
| Mutual funds | 1,467,981 | 1,404,582 |
|
Recurring [Member] | Level 1 [Member]
|
||
| Assets [Abstract] | ||
| Mutual funds | 1,467,981 | 1,353,365 |
|
Recurring [Member] | Level 2 [Member]
|
||
| Assets [Abstract] | ||
| Mutual funds | 0 | 51,217 |
|
Recurring [Member] | Level 3 [Member]
|
||
| Assets [Abstract] | ||
| Mutual funds | $ 0 | $ 0 |