GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($)	9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017
Finite-Lived Intangible Assets [Line Items]
Original Amount	$ 5,207,000		$ 5,150,000
Accumulated Amortization	(1,559,000)		(1,104,000)
Net Amount	3,648,000		4,046,000
Intangible assets, amortization expense	500,000	$ 500,000
Changes in goodwill	0
Future amortization of intangible assets [Abstract]
2019	606,000
2020	606,000
2021	606,000
2022	586,000
2023	540,000
Thereafter	704,000
Net Amount	$ 3,648,000		4,046,000
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Lives	7 years
Original Amount	$ 3,007,000		3,007,000
Accumulated Amortization	(811,000)		(490,000)
Net Amount	2,196,000		2,517,000
Future amortization of intangible assets [Abstract]
Net Amount	2,196,000		2,517,000
Permits
Finite-Lived Intangible Assets [Line Items]
Original Amount	1,430,000		1,373,000
Accumulated Amortization	(365,000)		(288,000)
Net Amount	1,065,000		1,085,000
Future amortization of intangible assets [Abstract]
Net Amount	$ 1,065,000		1,085,000
Permits | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Lives	6 years
Permits | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Lives	15 years
Patents
Finite-Lived Intangible Assets [Line Items]
Original Amount	$ 383,000		383,000
Accumulated Amortization	(274,000)		(264,000)
Net Amount	109,000		119,000
Future amortization of intangible assets [Abstract]
Net Amount	$ 109,000		119,000
Patents | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Lives	5 years
Patents | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Lives	17 years
Trade name
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Lives	7 years
Original Amount	$ 270,000		270,000
Accumulated Amortization	(68,000)		(39,000)
Net Amount	202,000		231,000
Future amortization of intangible assets [Abstract]
Net Amount	$ 202,000		231,000
Non-compete
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Lives	5 years
Original Amount	$ 117,000		117,000
Accumulated Amortization	(41,000)		(23,000)
Net Amount	76,000		94,000
Future amortization of intangible assets [Abstract]
Net Amount	$ 76,000		$ 94,000