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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)
Jun. 30, 2012
Dec. 31, 2011
Stockholders' deficit:    
Undesignated preferred stock, par value $ 0.01 $ 0.01
Undesignated preferred stock, shares authorized 10,000,000 10,000,000
Undesignated preferred stock, shares issued      
Undesignated preferred stock, shares outstanding      
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 350,000,000 250,000,000
Common stock, shares issued 199,300,833 199,300,833
Common stock, shares outstanding 131,522,945 131,522,945