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OPERATING LEASES (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Jan. 01, 2019
Lessee, Lease, Description [Line Items]      
Operating Leases, Rent Expense, Net $ 893 $ 1,371  
Subsequent Event [Member] | Minimum [Member] | Accounting Standards Update 2016-02 [Member]      
Lessee, Lease, Description [Line Items]      
Operating liabilities     $ 500
Subsequent Event [Member] | Maximum [Member] | Accounting Standards Update 2016-02 [Member]      
Lessee, Lease, Description [Line Items]      
Operating liabilities     $ 1,000