LOAN PAYABLE	3 Months Ended
Mar. 31, 2017
LOAN PAYABLE
LOAN PAYABLE	8.LOAN PAYABLE In October 2012, the Company entered into a loan agreement with the Massachusetts Development Finance Agency (“MassDev”). The loan agreement provided the Company with a $2.0 million line of credit from the Commonwealth of Massachusetts’ Emerging Technology Fund, with $200,000 designated to be used for working capital purposes and the remainder to be used for the purchase of capital equipment. The annual interest rate on the loan is fixed at 6.5% with interest-only payments for the first thirty months, commencing on November 1, 2012, and then equal installments of interest and principal over the next fifty-four months, until the final maturity of the loan on October 5, 2019. Commencing on May 1, 2015, equal monthly payments of $41,000 are due until loan maturity. Therefore, for the years ending December 31, 2017, 2018, and 2019, $319,000, $452,000 and $400,000, respectively, will be due. In October 2012, as part of the agreement, the Company issued MassDev a warrant for the purchase of 9,037 shares of the Company’s common stock. The warrant has a seven-year term and is exercisable at $6.64 per share. The fair value of the warrant was determined to be $32,000 and is being amortized through interest expense over the life of the note. Amortization expense in each of the three-month periods ended March 31, 2017 and 2016 was $1,000 and was included in interest expense in the Company’s consolidated statements of operations. The equipment line of credit is secured by substantially all the assets of the Company, excluding intellectual property. Interest expense related to this loan for the three-month periods ended March 31, 2017 and 2016 was $20,000 and $29,000, respectively.

LOAN PAYABLE

3 Months Ended

Mar. 31, 2017

8.LOAN PAYABLE

In October 2012, the Company entered into a loan agreement with the Massachusetts Development Finance Agency (“MassDev”). The loan agreement provided the Company with a $2.0 million line of credit from the Commonwealth of Massachusetts’ Emerging Technology Fund, with $200,000 designated to be used for working capital purposes and the remainder to be used for the purchase of capital equipment. The annual interest rate on the loan is fixed at 6.5% with interest-only payments for the first thirty months, commencing on November 1, 2012, and then equal installments of interest and principal over the next fifty-four months, until the final maturity of the loan on October 5, 2019. Commencing on May 1, 2015, equal monthly payments of $41,000 are due until loan maturity. Therefore, for the years ending December 31, 2017, 2018, and 2019, $319,000, $452,000 and $400,000, respectively, will be due. In October 2012, as part of the agreement, the Company issued MassDev a warrant for the purchase of 9,037 shares of the Company’s common stock. The warrant has a seven-year term and is exercisable at $6.64 per share. The fair value of the warrant was determined to be $32,000 and is being amortized through interest expense over the life of the note. Amortization expense in each of the three-month periods ended March 31, 2017 and 2016 was $1,000 and was included in interest expense in the Company’s consolidated statements of operations. The equipment line of credit is secured by substantially all the assets of the Company, excluding intellectual property. Interest expense related to this loan for the three-month periods ended March 31, 2017 and 2016 was $20,000 and $29,000, respectively.