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Liquidity (Details) (USD $)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Liquidity [Abstract]          
Net loss allocable to common stockholders $ 11,039,000 $ 1,706,000 $ 16,371,000 $ 4,043,000 $ 4,306,000
Working Capital Deficit 12,015,000   12,015,000    
Number of notes outstanding     1    
Secure note outstanding, principal amount $ 2,750,000   $ 2,750,000   $ 2,750,000
Note payable, due date     Sep. 13, 2012