INCOME TAXES - EFFECTIVE INCOME TAX RATE RECONCILIATION (Details)	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Effective Income Tax Rate Reconciliation
Statutory federal tax rate	35.00%	35.00%	35.00%
State taxes—net of federal tax benefit	6.81%	6.67%	7.29%
Cash surrender value	(0.04%)	(0.07%)	(0.09%)
Tax credits	(0.24%)	(0.20%)	(0.69%)
Non-taxable income	(0.58%)	(0.56%)	(0.79%)
Other	0.35%	(0.20%)	0.20%
Effective tax rate	41.30%	40.64%	40.92%