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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 4) (USD $)
12 Months Ended 1 Months Ended
Dec. 31, 2011
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Dec. 31, 2010
Sep. 30, 2012
Sep. 30, 2012
Convertible senior notes
Oct. 14, 2009
Convertible senior notes
Cell Genesys
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Convertible Senior Notes          
Number of series of convertible notes assumed in merger         2
Interest rate (as a percent)       3.125% 3.125%
Principal balance of debt assumed         $ 22,016,000
Investments          
Investments balance 3,405,807 3,405,807 3,413,762    
Number of Board members to be designated 1        
Investment impairment charge   $ 286,000