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Fair Value Measurements (Reconciliation Of Changes In The Fair Value Of Liabilities) (Details) (USD $)
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12 Months Ended | |
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Dec. 31, 2012
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Dec. 31, 2011
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| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||
| Balance at January 1 | $ 868,725 | $ 2,966,710 |
| Additions | 2,637,216 | 2,924,333 |
| Unrealized gains (losses) | (663,876) | (4,739,881) |
| Unrealized gains on expiration | (38,569) | |
| Transfers out of level 3 | (243,868) | |
| Balance at December 31 | 2,842,065 | 868,725 |
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Warrant Liabilities [Member]
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| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] | ||
| Balance at January 1 | 868,725 | 2,966,710 |
| Additions | 2,637,216 | 2,924,333 |
| Unrealized gains (losses) | (663,876) | (4,739,881) |
| Unrealized gains on expiration | (38,569) | |
| Transfers out of level 3 | (243,868) | |
| Balance at December 31 | $ 2,842,065 | $ 868,725 |
| X | ||||||||||
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- Definition
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Unrealized Gains On Expiration No definition available.
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- Definition
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Unrealized Losses No definition available.
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- Details
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- Definition
Transfers out of liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy that have taken place during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Purchases that have taken place during the period in relation to liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This element represents a liability measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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