|
Subsequent Events - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified |
1 Months Ended | 1 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|
|
Apr. 19, 2013
|
Jan. 30, 2014
Subsequent Event
Series A Warrants
|
Jan. 30, 2014
Subsequent Event
Series B Warrants
|
Jan. 30, 2014
Subsequent Event
Series B Warrants
After Issuance
|
Jan. 30, 2014
Subsequent Event
Series B Warrants
Resale Registration Statement
|
Jan. 30, 2014
Subsequent Event
Series C Warrants
|
Jan. 30, 2014
Subsequent Event
Series C Warrants
After Issuance
|
Jan. 30, 2014
Subsequent Event
Series C Warrants
Resale Registration Statement
|
Jan. 30, 2014
Subsequent Event
Private Placement
|
|
| Business Acquisition, Equity Interests Issued or Issuable [Line Items] | |||||||||
| Stock issued during period, shares, new issues | 11,400,000 | ||||||||
| Share price | $ 0.25 | ||||||||
| Common stock issuance upon exercise of warrants | 34,200,000 | ||||||||
| Proceeds from issuance of common stock | $ 2.85 | ||||||||
| Class of warrant or right, exercise price of warrants or rights | 0.75 | 0.30 | 0.35 | 0.40 | |||||
| Percentage of exercisability of warrants | 4.90% | ||||||||
| Exercise term of warrants | 5 years | 12 months | 6 months | 18 months | 9 months | ||||