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LEASES (Schedule of Operating Leases) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
LEASES [Abstract]      
Operating lease expenses $ 944 $ 1,586 $ 1,680
2021 798    
2022 805    
2023 649    
2024 610    
2025 and after 735    
Total operating lease payments 3,597    
Less: imputed interest 431    
Present value of lease liabilities 3,166    
Lease liabilities, current 639 600  
Lease liabilities, non- current $ 2,527 $ 2,978