LOAN PAYABLE (Details) (MassDev, USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	1 Months Ended
	Mar. 31, 2015	Oct. 31, 2012
Loans Payable
Line of credit for the purchase of capital equipment		$ 2,000
Amortization of the deferred financing costs	1
Interest expense	31
Additional disclosure
Line of credit for working capital purpose		200
Fixed interest rate (as a percent)	6.50%
Period for charging equal interest and principal payments	54 months
Maturity date	Oct. 05, 2019
Principal amount outstanding	1,920
Amount of monthly principal payment	36
Commencement date of monthly installments	May 01, 2015
Future Principal payment due : 2015	320
Future Principal payment due : 2016	427
Future Principal payment due : 2017	426
Future Principal payment due : 2018	427
Future Principal payment due : 2019	320
Warrants
Loans Payable
Number of shares into which a warrant may be converted		9,037
Warrant period		7 years
Exercise price of warrant (in dollars per share)		6.64
Additional disclosure
Approximate fair value of warrant		$ 32
Amortization period of deferred financing cost		7 years