TERM LOAN (Details) (USD $)		12 Months Ended		1 Months Ended		12 Months Ended			1 Months Ended
	Dec. 31, 2012	Dec. 31, 2012 MidCap	Dec. 31, 2011 MidCap	Mar. 31, 2012 Term Loan	Sep. 30, 2011 Term Loan	Dec. 31, 2012 Term Loan item	Mar. 31, 2011 Term Loan	Dec. 31, 2012 Term Loan Minimum	Dec. 31, 2010 Term Loan MidCap	Mar. 31, 2011 Term Loan GECC
Term Loan
Amount borrowed									$ 10,000,000	$ 5,000,000
Amount owed under the term loan	11,300,000						15,000,000
Basis of interest rate						LIBOR
Interest rate margin (as a percent)						6.25%
Fixed annual interest rate (as a percent)								9.50%
Extension of interest-only period					6 months
Upfront fee due upon repayment of the Term Loan in full				25,000
Additional Final Payment Fee due upon repayment of the Term Loan in full				37,500
Number of equal consecutive monthly installments						34
Rate of prepayment premium in year three (as a percent)						1.00%
Original Payment Fee payable upon repayment of term loan in full						500,000
Interest expense on the term loan		1,500,000	1,600,000
Obligations to repay principal amounts for the term loan (including Payment Fee)
2013		5,700,000
2014		$ 5,800,000