LOAN PAYABLE (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 31, 2012	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Equipment Line of Credit
Loans Payable
Interest expense		$ 32	$ 32	$ 97	$ 95
MassDev
Loans Payable
Line of credit for the purchase of capital equipment	$ 2,000
Amortization of the deferred financing costs		$ 3		$ 3
Additional disclosure
Line of credit for working capital purpose	$ 200
Fixed interest rate (as a percent)		6.50%		6.50%
Period for charging equal interest and principal payments		54 months
Maturity date		Oct. 05, 2019
Amount of monthly principal payment		$ 41
Commencement date of monthly installments		May 01, 2015
Future Principal payment due : 2015		$ 250		$ 250
Future Principal payment due : 2016		396		396
Future Principal payment due : 2017		423		423
Future Principal payment due : 2018		451		451
Future Principal payment due : 2019		$ 400		$ 400
MassDev | 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