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

The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.

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