INCOME TAXES - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Components of deferred tax assets and liabilities [Abstract]
Net operating loss carryforwards	[1]	$ 71	$ 24
Other		9	10
Deferred tax assets, gross, Total		80	34
Deferred income tax liabilities		0	0
Net deferred tax assets		80	34
Valuation allowance	[2]	$ 80	$ 34

[1] The increase in net operating loss carryforward from 2019 to 2020 is due to a carryforward correction noted in reconciliation against filed tax returns.

[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, 2020.