ORGANIZATION AND BUSINESS BACKGROUND (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Equity Method Investment Summarized Financial Information [Line Items]      
Net cash provided by (used in) operating activities $ 125,192 $ 69,813 $ 46,737
Net cash used in investing activities (49,748) (89,553) (2,454)
Net cash provided by financing activities (12,197) (7,413) $ (6,780)
Variable Interest Entity (VIE) or Potential VIE, Information Unavailability [Member]      
Equity Method Investment Summarized Financial Information [Line Items]      
Current assets 25,209 14,331  
Non-current assets 299 239  
Total assets 25,508 14,570  
Current liabilities 19,533 14,178  
Total liabilities 19,533 14,178  
Revenue 42,287 6,914  
Cost of revenue 35,353 5,753  
Net profit 5,521 494  
Net cash provided by (used in) operating activities (2,947) 8,721  
Net cash used in investing activities (184) (216)  
Net cash provided by financing activities $ 0 $ 0