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SERIES A CONVERTIBLE REDEEMABLE PREFERRED SHARES (Narrative) (Details) (USD $)	0 Months Ended	12 Months Ended
	Nov. 11, 2009	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Temporary Equity [Line Items]
Cash proceeds from issuance of shares
Issuance costs paid				1,744,952
Series A Preferred Stock [Member]
Temporary Equity [Line Items]
Shares issued	29,714,103
Cash proceeds from issuance of shares	54,900,000
Issuance costs paid	100,000
Accretion to redemption value				3,300,000
Number of preferred shares converted				29,714,103
Preferred stock conversion ratio		1
Gross cash proceeds from Qualified IPO		80,000,000
Pre-money market valuation after Qualified IPO		$ 275,000,000
Redemption percentage		100.00%
Redemption interest rate		8.00%
Dividend rate		8.00%

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Value of accretion of temporary equity to its redemption value during the period. This item is an adjustment to net income necessary to derive net income apportioned to common stockholders and is to be distinguished from Temporary Equity, Accretion to Redemption Value (TemporaryEquityAccretionToRedemptionValue).

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