CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) [Abstract]
Net loss	$ (3,064)	$ (4,104)	$ (8,531)	$ (10,978)
Other comprehensive income
Employee pension plan adjustments	154	161	308	323
Comprehensive loss	$ (2,910)	$ (3,943)	$ (8,223)	$ (10,655)

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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