GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Finite-Lived Intangible Assets [Line Items]
Intangible assets, original amount	$ 5,150	$ 1,631
Intangible assets, accumulated amortization	(1,104)	(502)
Total	4,046	1,129
Intangible assets, amortization expense	600	100	$ 100
Goodwill [Roll Forward]
Beginning Balance	1,039	0
Goodwill Acquired	5,696	1,039
Ending Balance	6,735	1,039	$ 0
Future amortization of intangible assets [Abstract]
2018	616
2019	616
2020	616
2021	615
2022	590
Thereafter	993
Total	$ 4,046	1,129
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	7 years
Intangible assets, original amount	$ 3,007	580
Intangible assets, accumulated amortization	(490)	(60)
Total	2,517	520
Future amortization of intangible assets [Abstract]
Total	2,517	520
Permits [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, original amount	1,373	668
Intangible assets, accumulated amortization	(288)	(191)
Total	1,085	477
Future amortization of intangible assets [Abstract]
Total	$ 1,085	477
Permits [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	6 years
Permits [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	15 years
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, original amount	$ 383	383
Intangible assets, accumulated amortization	(264)	(251)
Total	119	132
Future amortization of intangible assets [Abstract]
Total	$ 119	132
Patents [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	5 years
Patents [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	17 years
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	7 years
Intangible assets, original amount	$ 270	0
Intangible assets, accumulated amortization	(39)	0
Total	231	0
Future amortization of intangible assets [Abstract]
Total	$ 231	0
Non-compete [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful lives	5 years
Intangible assets, original amount	$ 117	0
Intangible assets, accumulated amortization	(23)	0
Total	94	0
Future amortization of intangible assets [Abstract]
Total	$ 94	$ 0