STOCK-BASED COMPENSATION - UNRECOGNIZED COMPENSATION EXPENSE (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2016 USD ($)
Stock options
Unrecognized stock-based compensation expense
Unrecognized compensation expense	$ 608
Weighted-average vesting period (years)	2 years
Stock appreciation rights
Unrecognized stock-based compensation expense
Unrecognized compensation expense	$ 3,211
Weighted-average vesting period (years)	2 years 2 months 12 days
Restricted stock
Unrecognized stock-based compensation expense
Unrecognized compensation expense	$ 7,506
Weighted-average vesting period (years)	3 years 3 months 18 days
Performance stock
Unrecognized stock-based compensation expense
Unrecognized compensation expense	$ 3,877
Weighted-average vesting period (years)	1 year 6 months