STOCK BASED COMPENSATION PLANS - Summary of Stock Based Compensation Plans (Details)	12 Months Ended
	Jun. 30, 2017 agreement shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of active plans | agreement	3
Number of shares authorized to purchase	2,500,000
June 2013 | 2013 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized to purchase	500,000
June 2014 | 2014 Stock Option Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized to purchase	750,000
June 2015 | 2015 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized to purchase	1,250,000