STOCK-BASED COMPENSATION - UNRECOGNIZED COMPENSATION EXPENSE (Details) $ in Thousands	9 Months Ended
	Mar. 31, 2017 USD ($)
Stock options
Unrecognized stock-based compensation expense
Unrecognized compensation expense	$ 430
Weighted-average vesting period (years)	1 year 7 months 6 days
Stock appreciation rights
Unrecognized stock-based compensation expense
Unrecognized compensation expense	$ 2,394
Weighted-average vesting period (years)	1 year 10 months 24 days
Restricted stock
Unrecognized stock-based compensation expense
Unrecognized compensation expense	$ 6,107
Weighted-average vesting period (years)	3 years 1 month 6 days
Performance stock
Unrecognized stock-based compensation expense
Unrecognized compensation expense	$ 2,215
Weighted-average vesting period (years)	1 year 4 months 24 days