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GOODWILL AND INTANGIBLE ASSETS - NET - ESTIMATED AMORTIZATION EXPENSE (Details) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2020 $ 14  
2021 14  
2022 14  
2023 3  
Definitive-lived intangible assets, net $ 45 $ 78