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Redeemable Convertible Preferred Stock (Details 1) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Balance as of January 1, 2013			$ 108,839
Decrease of fair value	(245)	335	36,955	(32,918)
Ending balance as of September 30, 2013	$ 71,884		$ 71,884

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, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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