|
Significant Accounting Policies (Details 3) (USD $)
|
3 Months Ended | 6 Months Ended | 60 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Oct. 31, 2011
|
Jan. 31, 2013
|
Jan. 31, 2012
|
Jan. 31, 2013
|
Jan. 31, 2013
Research and development expense
Non-employees
|
Jan. 31, 2012
Research and development expense
Non-employees
|
Jan. 31, 2013
Research and development expense
Non-employees
|
Jan. 31, 2012
Research and development expense
Non-employees
|
Jan. 31, 2013
General and administrative expense
Non-employees
|
Jan. 31, 2012
General and administrative expense
Non-employees
|
Jan. 31, 2013
General and administrative expense
Non-employees
|
Jan. 31, 2012
General and administrative expense
Non-employees
|
|
| Stock options to non-employees | ||||||||||||
| Stock-based compensation expense recognized | $ 83,000 | $ 34,500 | $ 166,000 | $ 366,500 | $ 400 | $ 12,000 | $ 6,000 | $ 12,000 | $ 51,000 | $ 25,000 | $ 174,000 | $ 25,000 |