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FAIR VALUE OF FINANCIAL ASSETS AND FINANCIAL LIABILITIES (Narrative) (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Fair Value Disclosures [Abstract]    
Fair value measurements of assets $ 1,502,000  
Fair value measurements of liabilities (619,000)  
Nonrecurring Basis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Assets, fair value 0 $ 0
Liabilities, fair value $ 0 $ 0