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ACCOUNTING POLICIES (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2017
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Accounting Policies [Line Items]          
Provision for income taxes   $ (2,138) $ 209 $ 6,467 $ 94
Accounting standards update 2016-09          
Accounting Policies [Line Items]          
Provision for income taxes $ 67     $ 31