INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Line Items]
Income tax (benefit) expense	$ (1,737)	$ 128
Federal statutory income tax rate, percent	21.00%	21.00%
State and local operating loss carryforwards	$ 2,219
Decrease in net valuation allowance	(243)	$ (175)
Unrecognized tax benefits	275	259	$ 87
Amount accrued for income tax penalties and interest accrued	15
Peru
Income Tax Disclosure [Line Items]
Income tax (benefit) expense		$ (104)
Domestic Tax Authority
Income Tax Disclosure [Line Items]
International operating loss carryforwards	32
Foreign Tax Authority
Income Tax Disclosure [Line Items]
Domestic operating loss carryforwards	2,586
State and Local Jurisdiction
Income Tax Disclosure [Line Items]
State and local operating loss carryforwards	$ 129