COLLABORATION AGREEMENTS (Details) (License agreements, USD $) In Millions, unless otherwise specified	12 Months Ended						1 Months Ended			1 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Medarex Maximum	Dec. 31, 2012 Rockefeller Maximum	Dec. 31, 2012 Duke Maximum	Oct. 31, 2006 Ludwig	Dec. 31, 2012 Ludwig Maximum	Dec. 31, 2012 Alteris Maximum	Feb. 28, 2003 TJU item	Dec. 31, 2012 TJU Maximum	Dec. 31, 2012 Southampton Maximum	Dec. 31, 2012 Amgen Maximum	Dec. 31, 2012 Seattle Genetics CuraGen Maximum
Collaboration Agreements
Nonrefundable license fee expense	$ 0.7	$ 1.4	$ 1.0
Period from the first commercial sale of licensed product for royalty payment				10 years
Milestone payment due				$ 7.0	$ 3.9	$ 1.0		$ 1.0	$ 5.0		$ 3.0	$ 1.4	$ 1.0	$ 7.5
Term of the agreement							10 years
Number of exclusive license agreements										2