|
Significant Accounting Policies (Details 2) (USD $)
|
9 Months Ended | 63 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Apr. 30, 2013
|
Apr. 30, 2012
|
Apr. 30, 2013
|
Apr. 30, 2013
Research and development expense
Non-employees
|
Apr. 30, 2012
Research and development expense
Non-employees
|
Apr. 30, 2013
Research and development expense
Non-employees
|
Apr. 30, 2012
Research and development expense
Non-employees
|
Apr. 30, 2013
General and administrative expense
Non-employees
|
Apr. 30, 2012
General and administrative expense
Non-employees
|
Apr. 30, 2013
General and administrative expense
Non-employees
|
Apr. 30, 2012
General and administrative expense
Non-employees
|
|
| Stock options to non-employees | |||||||||||
| Stock-based compensation expense recognized | $ 34,500 | $ 249,000 | $ 366,500 | $ 3,000 | $ 8,000 | $ 9,000 | $ 8,000 | $ 62,000 | $ 25,000 | $ 236,000 | $ 25,000 |