PROPERTY, PLANT AND EQUIPMENT (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 2,807	$ 2,754
Less: impairment reserve	(82)	0
Less: accumulated depreciation	(1,858)	(1,741)
Total property, plant and equipment, net	867	1,013
Building and improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	1,273	1,265
Scientific equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	598	598
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	109	124
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	568	508
Land and improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	162	162
Other personal property
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	70	70
Office equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 27	$ 27