BUSINESS SEGMENTS (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Net revenue		$ 9,690	$ 10,552	$ 19,735	$ 21,497
Operating Income (Loss)		227	698	350	1,245
Total assets		36,895	36,789	36,895	36,789
Depreciation and amortization		590	519	1,145	1,019
Capital expenditures		1,083	1,066	2,297	1,595
Manufacturing [Member]
Net revenue		3,352	3,973	6,989	8,738
Operating Income (Loss)		76	107	183	293
Total assets		8,835	8,837	8,835	8,837
Depreciation and amortization		29	28	58	56
Capital expenditures		0	2	1	37
Testing Services [Member]
Net revenue		4,393	4,936	8,830	9,541
Operating Income (Loss)		21	517	(117)	853
Total assets		23,750	23,591	23,750	23,591
Depreciation and amortization		547	466	1,059	913
Capital expenditures		1,083	1,064	2,296	1,558
Distribution [Member]
Net revenue		1,916	1,606	3,860	3,142
Operating Income (Loss)		170	119	342	220
Total assets		759	621	759	621
Depreciation and amortization		0	0	0	0
Capital expenditures		0	0	0	0
Real Estate [Member]
Net revenue		29	37	56	76
Operating Income (Loss)		(5)	(9)	(17)	(19)
Total assets		3,449	3,624	3,449	3,624
Depreciation and amortization		14	25	28	50
Capital expenditures		0	0	0	0
Fabrication Services [Member]
Net revenue	[1]	0	0	0	0
Operating Income (Loss)	[1]	0	0	0	0
Total assets	[1]	26	28	26	28
Depreciation and amortization	[1]	0	0	0	0
Capital expenditures	[1]	0	0	0	0
Corporate And Unallocated [Member]
Net revenue		0	0	0	0
Operating Income (Loss)		(35)	(36)	(41)	(102)
Total assets		76	88	76	88
Depreciation and amortization		0	0	0	0
Capital expenditures		$ 0	$ 0	$ 0	$ 0

[1] Fabrication services is a discontinued operation.