BUSINESS SEGMENTS (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Net revenue		$ 8,838	$ 10,104	$ 28,573	$ 31,601
Operating Income (Loss)		123	234	473	1,479
Total assets		37,000	36,388	37,000	36,388
Depreciation and amortization		632	575	1,777	1,594
Capital expenditures		278	455	2,576	2,050
Manufacturing [Member]
Net revenue		3,097	3,124	10,086	11,862
Operating Income (Loss)		(8)	(105)	175	188
Total assets		9,205	7,035	9,205	7,035
Depreciation and amortization		30	30	88	86
Capital expenditures		39	26	40	63
Testing Services [Member]
Net revenue		3,989	4,913	12,819	14,454
Operating Income (Loss)		(17)	428	(134)	1,281
Total assets		22,842	24,790	22,842	24,790
Depreciation and amortization		588	519	1,647	1,432
Capital expenditures		239	429	2,535	1,987
Distribution [Member]
Net revenue		1,727	2,033	5,587	5,175
Operating Income (Loss)		150	117	492	337
Total assets		780	631	780	631
Depreciation and amortization		0	0	0	0
Capital expenditures		0	0	0	0
Real Estate [Member]
Net revenue		25	34	81	110
Operating Income (Loss)		(13)	(18)	(30)	(38)
Total assets		3,914	3,732	3,914	3,732
Depreciation and amortization		14	26	42	76
Capital expenditures		0	0	0	0
Fabrication Services [Member]
Net revenue		0	0	0	0
Operating Income (Loss)		0	0	0	0
Total assets	[1]	26	28	26	28
Depreciation and amortization		0	0	0	0
Capital expenditures		0	0	0	0
Corporate And Unallocated [Member]
Net revenue		0	0	0	0
Operating Income (Loss)		11	(188)	(30)	(289)
Total assets		233	172	233	172
Depreciation and amortization		0	0	0	0
Capital expenditures		$ 0	$ 0	$ 0	$ 0

[1] Fabrication services is a discontinued operation.