SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Inventory (Details) - USD ($)	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Inventory [Abstract]
Inventory	$ 3,986,000	$ 4,098,000
Finished goods	2,700,000	2,800,000
Raw materials	1,300,000	1,300,000
Loss on inventory write-down	$ 0	$ 0	$ 17,000