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Mandatorily Redeemable Convertible Preferred Stock (Tables)

9 Months Ended

Sep. 30, 2012

Convertible Preferred Stock [Abstract]

Preferred stock and warrants calculated using the Black Scholes Merton pricing model

Number of warrants			125,000				200,000
Exercise price		$	6.00			$	7.00
Expected volatility of underlying stock			74	%			74	%
Risk-free interest rate			1.50	%			1.70	%
Dividend yield			0.00	%			0.00	%
Expected life of warrants			8 years				8 years
Weighted-average fair value of warrants		$	3.17			$	3.07
Expiration date			May 2, 2020				May 2, 2020

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- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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