19. BUSINESS SEGMENTS (Details) - USD ($) $ in Thousands		12 Months Ended
		Jun. 30, 2018	Jun. 30, 2017
Net revenue		$ 42,361	$ 38,538
Operating Income (Loss)		2,188	1,489
Total assets		36,474	33,498
Depreciation and amortization		2,214	1,836
Capital expenditures		2,309	2,285
Manufacturing [Member]
Net revenue		15,978	15,289
Operating Income (Loss)		548	75
Total assets		8,549	8,229
Depreciation and amortization		115	186
Capital expenditures		143	99
Testing Services [Member]
Net revenue		19,391	16,586
Operating Income (Loss)		1,522	1,112
Total assets		23,480	20,871
Depreciation and amortization		1,997	1,550
Capital expenditures		2,166	2,186
Distribution [Member]
Net revenue		6,853	6,511
Operating Income (Loss)		475	345
Total assets		789	617
Depreciation and amortization		0	2
Capital expenditures		0	0
RealEstate [Member]
Net revenue		139	152
Operating Income (Loss)		(56)	(38)
Total assets		3,521	3,511
Depreciation and amortization		102	98
Capital expenditures		0	0
Fabrication Services [Member]
Net revenue	[1]	0	0
Operating Income (Loss)	[1]	0	0
Total assets	[1]	27	29
Depreciation and amortization	[1]	0	0
Capital expenditures	[1]	0	0
CorporateAndUnallocated [Member]
Net revenue		0	0
Operating Income (Loss)		(301)	(5)
Total assets		108	241
Depreciation and amortization		0	0
Capital expenditures		$ 0	$ 0

[1] Fabrication services is a discontinued operation (Note 24).