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Warrant Liability (Tables)

9 Months Ended

Sep. 30, 2013

Warrant Liability [Abstract]

Assumptions Used to Determine Fair Value of Warrants

All changes in the fair value of the warrants were to be recognized in earnings until such time as the warrants were exercised or they expire. These warrants expired as of August 2013. The warrants were not traded in an active securities market, and as such, we estimated the fair value of these warrants using an option pricing model with the following assumptions:

		As of September 30, 2013				As of December 31, 2012
Expected term			—			0.61 years
Common stock market price		$	—			$	2.80
Risk-free interest rate			—				0.11	%
Expected volatility			—				73.88	%
Resulting fair value (per warrant)		$	—			$	0.20

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Schedule of assumptions used to determine fair value of warrants including: Expected term, common stock market price, risk-free interest rate, expected volatility.

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