BUSINESS SEGMENTS (Details) - USD ($) $ in Thousands		12 Months Ended
		Jun. 30, 2019	Jun. 30, 2018
Net revenue		$ 39,198	$ 42,361
Operating Income (Loss)		794	2,188
Total assets		36,527	36,474
Depreciation and amortization		2,450	2,214
Capital expenditures		2,841	2,309
Manufacturing [Member]
Net revenue		14,889	15,978
Operating Income (Loss)		575	548
Total assets		9,576	8,549
Depreciation and amortization		120	115
Capital expenditures		52	143
Testing Services [Member]
Net revenue		16,760	19,391
Operating Income (Loss)		(164)	1,522
Total assets		22,182	23,480
Depreciation and amortization		2,244	1,997
Capital expenditures		2,789	2,166
Distribution [Member]
Net revenue		7,451	6,853
Operating Income (Loss)		598	475
Total assets		785	789
Depreciation and amortization		0	0
Capital expenditures		0	0
RealEstate [Member]
Net revenue		98	139
Operating Income (Loss)		(92)	(56)
Total assets		3,826	3,521
Depreciation and amortization		86	102
Capital expenditures		0	0
Fabrication Services [Member]
Net revenue	[1]	0	0
Operating Income (Loss)	[1]	0	0
Total assets	[1]	27	27
Depreciation and amortization	[1]	0	0
Capital expenditures	[1]	0	0
Corporate And Unallocated [Member]
Net revenue		0	0
Operating Income (Loss)		(123)	(301)
Total assets		131	108
Depreciation and amortization		0	0
Capital expenditures		$ 0	$ 0

[1] Fabrication services is a discontinued operation.