PROPERTY AND EQUIPMENT (Narrative) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Decrease in property, plant and equipment, net	$ (600)
Impairment of property and equipment	0	$ 0	$ 0
Depreciation expense	1,500
Depreciation and amortization expense	$ 3,000	$ 1,700	$ 1,500
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated uselife	4 months