RELATED PARTY TRANSACTIONS AND CERTAIN OTHER TRANSACTIONS (Details) - Aircraft lease agreement - Chief Executive Officer - USD ($)		12 Months Ended
	Nov. 13, 2013	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Related Party Transaction [Line Items]
Rate to lease aircraft	$ 5,000
Sales, general and administrative
Related Party Transaction [Line Items]
Aircraft leasing expenses		$ 1,700,000	$ 1,600,000	$ 2,100,000