4. PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Property Plant And Equipment
Total property, plant and equipment	$ 19,133	$ 21,098
Less: Accumulated depreciation and amortization	(11,195)	(10,336)
Property, plant and equipment, net	7,938	10,762
Building and improvements [Member]
Property Plant And Equipment
Total property, plant and equipment	$ 5	1,447
Range of Asset Lives	7 to 36 years
Leasehold Improvements [Member]
Property Plant And Equipment
Total property, plant and equipment	$ 908	825
Range of Asset Lives	2 to 5 years
Equipment [Member]
Property Plant And Equipment
Total property, plant and equipment	$ 16,360	15,435
Range of Asset Lives	2 to 30 years
Furniture, computers and office equipment [Member]
Property Plant And Equipment
Total property, plant and equipment	$ 1,274	1,468
Range of Asset Lives	2 to 8 years
Land [Member]
Property Plant And Equipment
Total property, plant and equipment	$ 0	1,582
Construction in Progress [Member]
Property Plant And Equipment
Total property, plant and equipment	$ 586	$ 341