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Fair Value of Financial Instruments (Details) (USD $)
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3 Months Ended | 9 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Sep. 30, 2012
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Sep. 30, 2011
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Sep. 30, 2012
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Sep. 30, 2011
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Dec. 31, 2011
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Sep. 30, 2012
Recurring [Member]
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Dec. 31, 2011
Recurring [Member]
|
Sep. 30, 2012
Recurring [Member]
Warrant [Member]
|
Dec. 31, 2011
Recurring [Member]
Warrant [Member]
|
Sep. 30, 2012
Recurring [Member]
Warrant [Member]
Level 1 [Member]
|
Dec. 31, 2011
Recurring [Member]
Warrant [Member]
Level 1 [Member]
|
Sep. 30, 2012
Recurring [Member]
Warrant [Member]
Level 2 [Member]
|
Dec. 31, 2011
Recurring [Member]
Warrant [Member]
Level 2 [Member]
|
Sep. 30, 2012
Recurring [Member]
Warrant [Member]
Level 3 [Member]
|
Dec. 31, 2011
Recurring [Member]
Warrant [Member]
Level 3 [Member]
|
Sep. 30, 2012
Recurring [Member]
Preferred stock [Member]
|
Dec. 31, 2011
Recurring [Member]
Preferred stock [Member]
|
Sep. 30, 2012
Recurring [Member]
Preferred stock [Member]
Level 1 [Member]
|
Dec. 31, 2011
Recurring [Member]
Preferred stock [Member]
Level 1 [Member]
|
Sep. 30, 2012
Recurring [Member]
Preferred stock [Member]
Level 2 [Member]
|
Dec. 31, 2011
Recurring [Member]
Preferred stock [Member]
Level 2 [Member]
|
Sep. 30, 2012
Recurring [Member]
Preferred stock [Member]
Level 3 [Member]
|
Dec. 31, 2011
Recurring [Member]
Preferred stock [Member]
Level 3 [Member]
|
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| Liabilities [Abstract] | |||||||||||||||||||||||
| Derivative liability - warrants | $ 271,000 | $ 271,000 | $ 1,507,000 | $ 271,000 | $ 1,507,000 | $ 0 | $ 0 | $ 271,000 | $ 1,507,000 | $ 0 | $ 0 | ||||||||||||
| Derivative liability - preferred stock | 30,200,000 | 30,200,000 | 4,430,000 | 30,200,000 | 4,430,000 | 0 | 0 | 0 | 0 | 30,200,000 | 4,430,000 | ||||||||||||
| Gain on derivative | 64,000 | 1,138,000 | 1,236,000 | 3,312,000 | 1,236,000 | 3,580,000 | 1,410,000 | ||||||||||||||||
| Loss on derivative | $ 13,900,000 | $ 50,000 | $ 25,770,000 | $ 470,000 | $ (25,770,000) | ||||||||||||||||||
| Period used as base for volatility | 1 year | ||||||||||||||||||||||