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Fair Value Measurements (Summary of Changes in Fair Value of Level 3 Liabilities) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Beginning Balance	$ 1,295,613	$ 1,886,652
Unrealized (Gains) Losses	444,622	(591,039)	(7,144,983)
Ending Balance	1,740,235	1,295,613	1,886,652
Level 3 [Member] \| Warrants [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Beginning Balance	1,295,613	1,886,652	8,362,995
New Liabilities			668,640
Unrealized (Gains) Losses	444,622	(591,039)	(7,144,983)
Ending Balance	$ 1,740,235	$ 1,295,613	$ 1,886,652

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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