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BASIS OF PRESENTATION (Details)
$ in Thousands
6 Months Ended
Jan. 01, 2019
USD ($)
Jun. 30, 2019
USD ($)
subsidiary
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Number of wholly owned subsidiaries | subsidiary   2
Operating Lease, Right-of-Use Asset $ 5,500 $ 5,299
Operating Lease, Liability, Noncurrent 5,500  
cumulative period adjustment made to retained earnings 0  
Accounting Standards Update 2017-08    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
cumulative period adjustment made to retained earnings $ 1,300