REVENUE - Contract Liability (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2018 USD ($)
Increase (Decrease) In Contract with Customer, Liability [Roll Forward]
Deferred revenue, beginning of the period	$ 511
Deferred revenue, end of the period	1,428
Revenue recognized in the period from amounts included in deferred revenue at the beginning of the period	156
Under Legacy Guidance
Increase (Decrease) In Contract with Customer, Liability [Roll Forward]
Deferred revenue, beginning of the period	511
Deferred revenue, end of the period	312
ASC 606 | Adjustment
Increase (Decrease) In Contract with Customer, Liability [Roll Forward]
Deferred revenue, end of the period	$ (1,116)