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LEASES (Schedule of Operating Leases) (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jan. 02, 2019
LEASES [Abstract]      
Operating lease expenses $ 764 $ 757  
2019 (excluding the six months ended June 30, 2019) 788    
2020 1,528    
2021 936    
2022 642    
2023 638    
2024 and after 1,410    
Total operating lease payments 5,942    
Less: imputed interest 1,209    
Present value of lease liabilities $ 4,733   $ 5,049