DERIVATIVE INSTRUMENTS (Tables)

3 Months Ended

Mar. 31, 2017

DERIVATIVE INSTRUMENTS

Assumptions used in determining fair value of warrants

	March 31,		December 31,
	2017		2016
Risk free interest rate	1.3	%	1.2	%
Expected dividend yield	—	%	—	%
Contractual term (in years)	2.1		2.4
Expected volatility	78	%	89	%

Changes in derivative warrant liability

	Three Months Ended  March 31,
(In thousands)	2017		2016
Balance at December 31,	$	1,314	$	1,907
(Decrease) increase in the fair value of the warrants		(241)		1,047
Balance at March 31,	$	1,073	$	2,954