INCOME TAXES - Net Operating Loss Carryforwards (Details) - USD ($)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2012	Jun. 30, 2001	Jan. 14, 1998
Net operating loss carryforwards
Net operating loss carryforwards	$ 127,400,000
Excess tax benefits related to stock compensation	$ 2,200,000
Domestic Tax Authority
Net operating loss carryforwards
Amount of net operating losses carryforwards, prior to ownership change			$ 3,300,000	$ 900,000
Net operating losses carryforwards per year			$ 800,000	$ 200,000
Net operating losses removed due to restructuring		$ (13,300,000)