BUSINESS SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Net revenue	$ 9,823	$ 10,045
Operating income (loss)	222	123
Total assets	36,118	37,039
Depreciation and amortization	786	555
Capital expenditures	539	1,214
Manufacturing [Member]
Net revenue	3,317	3,637
Operating income (loss)	(12)	107
Total assets	9,434	8,566
Depreciation and amortization	47	29
Capital expenditures	19	1
Testing Services [Member]
Net revenue	4,390	4,437
Operating income (loss)	68	(138)
Total assets	22,138	24,200
Depreciation and amortization	610	512
Capital expenditures	520	1,213
Distribution [Member]
Net revenue	2,099	1,944
Operating income (loss)	204	172
Total assets	785	656
Depreciation and amortization	111	0
Capital expenditures	0	0
Real Estate [Member]
Net revenue	17	27
Operating income (loss)	(17)	(12)
Total assets	3,577	3,441
Depreciation and amortization	18	14
Capital expenditures	0	0
Fabrication Services [Member]
Net revenue	0	0
Operating income (loss)	0	0
Total assets	27	25
Depreciation and amortization	0	0
Capital expenditures	0	0
Corporate And Unallocated [Member]
Net revenue	0	0
Operating income (loss)	(21)	(6)
Total assets	157	151
Depreciation and amortization	0	0
Capital expenditures	$ 0	$ 0