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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 [Member]
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Jan. 30, 2014
Subsequent Event
Series B Warrants [Member]
|
Jan. 30, 2014
Subsequent Event
Series B Warrants [Member]
After Issuance [Member]
|
Jan. 30, 2014
Subsequent Event
Series B Warrants [Member]
Resale Registration Statement [Member]
|
Jan. 30, 2014
Subsequent Event
Series C Warrants [Member]
|
Jan. 30, 2014
Subsequent Event
Series C Warrants [Member]
After Issuance [Member]
|
Jan. 30, 2014
Subsequent Event
Series C Warrants [Member]
Resale Registration Statement [Member]
|
Jan. 30, 2014
Subsequent Event
Private Placement [Member]
|
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| 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 | ||||