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Capital Availability (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Capital Availability [Abstract]          
Net Income (Loss) Attributable to Parent $ (7,883,000) $ (5,138,000) $ (17,208,000) $ (17,209,000)  
Retained Earnings (Accumulated Deficit) (259,657,000)   (259,657,000)   (242,449,000)
Net cash provided by (used in) operating activities     $ (15,958,000) $ (19,532,000)