STOCK BASED COMPENSATION - Summary of Stock Options Outstanding and Exercisable (Details) shares in Thousands	12 Months Ended
	Jun. 30, 2018 $ / shares shares
Options Outstanding [Abstract]
Outstanding (in shares) | shares	920
Weighted average exercise price (in dollars per share)	$ 4.57
Options Exercisable [Abstract]
Exercisable (in shares) | shares	634
Weighted average exercise price (in dollars per share)	$ 4.46
2.51 - $3.50
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, minimum (in dollars per share)	2.51
Range of Exercise Price, maximum (in dollars per share)	$ 3.50
Options Outstanding [Abstract]
Outstanding (in shares) | shares	41
Weighted average remaining life	1 year 5 months 26 days
Weighted average exercise price (in dollars per share)	$ 2.95
Options Exercisable [Abstract]
Exercisable (in shares) | shares	41
Weighted average remaining life	1 year 5 months 26 days
Weighted average exercise price (in dollars per share)	$ 2.95
3.51 - $5.50
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, minimum (in dollars per share)	3.51
Range of Exercise Price, maximum (in dollars per share)	$ 5.50
Options Outstanding [Abstract]
Outstanding (in shares) | shares	748
Weighted average remaining life	3 years 3 months 7 days
Weighted average exercise price (in dollars per share)	$ 4.42
Options Exercisable [Abstract]
Exercisable (in shares) | shares	502
Weighted average remaining life	2 years 4 months 6 days
Weighted average exercise price (in dollars per share)	$ 4.32
5.51 - $7.50
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, minimum (in dollars per share)	5.51
Range of Exercise Price, maximum (in dollars per share)	$ 7.50
Options Outstanding [Abstract]
Outstanding (in shares) | shares	131
Weighted average remaining life	3 years 9 months 24 days
Weighted average exercise price (in dollars per share)	$ 5.97
Options Exercisable [Abstract]
Exercisable (in shares) | shares	91
Weighted average remaining life	3 years 9 months 13 days
Weighted average exercise price (in dollars per share)	$ 5.90