QUARTERLY FINANCIAL DATA (UNAUDITED) - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Quarterly Financial Information [Line Items]
Loss on write down of inventories	$ 5,900			$ 5,905	$ 0	$ 0
Schedule of Equity Method Investments [Line Items]
Impairment charge				0	12,954	4,654
Former Executive Officer
Quarterly Financial Information [Line Items]
Severance costs		$ 7,900
Empire Education Group Inc
Schedule of Equity Method Investments [Line Items]
Impairment charge			$ 12,954	$ 0	$ 12,954	$ 4,654