COMMITMENTS AND CONTINGENCIES (Details) (USD $)	1 Months Ended			12 Months Ended			3 Months Ended	12 Months Ended
	Mar. 31, 2012 sqft	Nov. 30, 2010 sqft	Nov. 30, 2009 sqft	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009 Aldevron Madison sqft	Dec. 31, 2012 Aldevron Madison	Dec. 31, 2011 Aldevron Madison	Dec. 31, 2010 Aldevron Madison
COMMITMENTS AND CONTINGENCIES
Initial term of the lease			5 years
Area of laboratory office facility under operating lease (in square feet)	35,000	24,572	17,500
Additional area of laboratory and office under the amended lease agreement (in square feet)	10,428	7,072
Future minimum payments under operating leases
2013				$ 527,000
2014				449,000
Total lease obligations				976,000
Additional disclosure
Rent expense				400,000	300,000	200,000
Commitments and contingencies
Rentable area under the sublease agreement (in square feet)							5,086
Proceeds from the sublease agreement								66,800	78,500	76,600
Term of the sublease agreement							36 months
Amount expected to be received in sublease payments over the life of the sublease agreement							$ 200,000