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Fair Value Measurements (Summary of Changes in Fair Value of Our Level 3 Liabilities) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Unrealized Gains (Losses)	$ (628,622)	$ 508,971	$ (1,181,575)	$ 341,118
Fair Value, Inputs, Level 3 [Member] \| Warrants [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance			1,295,613	1,886,652
Unrealized Gains (Losses)			(1,181,575)	341,118
Ending Balance	$ 2,477,188	$ 1,545,534	$ 2,477,188	$ 1,545,534

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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