Redeemable Convertible Preferred Stock (Tables)

6 Months Ended

Jun. 30, 2013

Temporary Equity Disclosure [Abstract]

Fair Value Inputs, Liabilities, Quantitative Information [Table Text Block]

The table below shows the quantitative information about the significant unobservable inputs used in the fair value measurement of level 3 conversion feature liability:

Expected life of the redemption in years	1.0
Risk free interest rate	0.15	%
Expected annual volatility	77.82	%
Annual rate of dividends	0	%

Schedule of Derivative Liabilities at Fair Value [Table Text Block]

The changes in the fair value of the derivative are as follows:

Balance as of January 1, 2013	$	108,839
Decrease of fair value		(37,200)
Ending balance as of June 30, 2013	$	71,639