PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment
Property, plant and equipment, gross	$ 13,652	$ 13,479
Less accumulated depreciation	(13,379)	(13,144)
Property, plant and equipment, net	273	335
Buildings and improvements
Property, Plant and Equipment
Property, plant and equipment, gross	$ 474	474
Buildings and improvements | Minimum
Property, Plant and Equipment
Estimated Useful Lives	5 years
Buildings and improvements | Maximum
Property, Plant and Equipment
Estimated Useful Lives	39 years
Machinery and equipment
Property, Plant and Equipment
Property, plant and equipment, gross	$ 4,227	4,078
Machinery and equipment | Minimum
Property, Plant and Equipment
Estimated Useful Lives	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment
Estimated Useful Lives	12 years
Furniture and fixtures
Property, Plant and Equipment
Property, plant and equipment, gross	$ 8,668	8,668
Furniture and fixtures | Minimum
Property, Plant and Equipment
Estimated Useful Lives	2 years
Furniture and fixtures | Maximum
Property, Plant and Equipment
Estimated Useful Lives	10 years
Construction-in-Progress
Property, Plant and Equipment
Property, plant and equipment, gross	$ 283	$ 259