ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ACCRUED EXPENSES
Bonus	$ 144	$ 62
Payroll	88	79
Vacation	42	55
Severance	1,430	1,160
Other accrued expenses	682	282
Total accrued expenses	$ 2,386	$ 1,638