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Preferred Stock (Details) (USD $)
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Preferred Stock, Par or Stated Value Per Share $ 0.01 $ 0.01
Conversion of Stock, New Issuance 164418  
Shares, Issued 5,157,732  
Proceeds from (Repurchase of) Redeemable Preferred Stock $ 2,500,000  
Decrease In Fair Value Of Embeded Derivatives 1,900,000  
Decrease In Fair Value Of Warrant Derivative 193,000  
Redeemable Convertible Preferred Stock [Member]
    
Preferred Units, Issued 10,582,011  
Preferred Stock, Par or Stated Value Per Share $ 0.01  
Issuance Of Warrants 1,322,486  
Adjusted Issuance Of Warrants 1,452,925  
Preferred Units, Offering Costs 1  
Proceeds from Issuance of Redeemable Convertible Preferred Stock 10,000,000  
Net Proceeds From Preferred Stock 8,900,000  
Preferred Stock, Liquidation Preference Per Share $ 1.00  
Preferred Stock, Dividend Rate, Percentage 7.00%  
Preferred Stock, Redemption Amount 1,000,000  
Initial Conversion Price $ 2.00  
Adjusted Conversion Price $ 1.67  
Fair Value Of Derivative Liabilities [Member]
    
Fair Value Preferred Stock 4,800,000  
Fair Value Embeded Derivatives 392,000  
Fair Value Warrant Derivative $ 83,000