401(k) PLANS (Details) $ in Thousands	12 Months Ended
Dec. 31, 2017 USD ($) Plan	Dec. 31, 2016 USD ($)
401(k) PLANS [Abstract]
Number of defined contribution plans \| Plan	2
Maximum annual voluntary contribution per plan participant	80.00%
Company's discretionary annual contributions \| $	$ 116	$ 67

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

No definition available.

Name:	us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration