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ACCOUNTING POLICIES (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Jun. 30, 2018
Accounting Policies [Line Items]            
Income tax benefit (expense)   $ 19 $ (157) $ 37 $ (129)  
Accounting standards update 2016-09            
Accounting Policies [Line Items]            
Income tax benefit (expense) $ 67         $ 31