INCOME TAX (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Schedule Of Income Tax Disclosure [Line Items]      
PRC $ 127,301 $ 105,331 $ 142,900
Non-PRC 2,341 (21,976) (5,158)
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest, Total $ 129,642 $ 83,355 $ 137,742