INCOME TAXES - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Components of deferred tax assets and liabilities [Abstract]
Net operating loss carryforwards	[1]	$ 29	$ 32
Other		11	11
Deferred tax assets, gross, Total		40	43
Deferred income tax liabilities		0	0
Net deferred tax assets		40	43
Valuation allowance	[2]	40	$ 43
Operating loss carryforwards subject to expiration amount		$ 3,500
Operating loss carryforwards, expiration date		Dec. 31, 2019

[1] Excludes $3.5 million in remaining net operating loss carryforwards which expire beginning after 2019. Should these carryforwards be utilized, they will be excluded for purposes of calculating the Company’s provision for income taxes. Any such utilization will, however, reduce actual taxes payable.

[2] Because this subsidiary is not expected to earn significant amounts of taxable income, related net deferred tax assets are fully reserved at December 31, 2018.