Fair Value Measurements (Schedule of Liabilities Measured at Fair Value) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-current portion of derivative instruments related to stock purchase warrants	$ 2,285,545	$ 1,295,613
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Current portion of derivative instruments related to stock purchase warrants	191,643
Non-current portion of derivative instruments related to stock purchase warrants	2,285,545	1,295,613
Total derivative instruments related to stock purchase warrants	2,477,188	1,295,613
Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Current portion of derivative instruments related to stock purchase warrants
Non-current portion of derivative instruments related to stock purchase warrants
Total derivative instruments related to stock purchase warrants
Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Current portion of derivative instruments related to stock purchase warrants
Non-current portion of derivative instruments related to stock purchase warrants
Total derivative instruments related to stock purchase warrants
Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Current portion of derivative instruments related to stock purchase warrants	191,643
Non-current portion of derivative instruments related to stock purchase warrants	2,285,545	1,295,613
Total derivative instruments related to stock purchase warrants	$ 2,477,188	$ 1,295,613

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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