BUSINESS SEGMENTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Net revenue	$ 34,465	$ 39,198
Operating Income (Loss)	(859)	794
Total assets	35,660	36,527
Depreciation and amortization	3,100	2,450
Capital expenditures	1,017	2,841
Manufacturing
Net revenue	11,605	14,889
Operating Income (Loss)	(326)	575
Total assets	9,807	9,576
Depreciation and amortization	346	120
Capital expenditures	183	52
Testing Services
Net revenue	14,840	16,760
Operating Income (Loss)	(1,040)	(164)
Total assets	21,086	22,182
Depreciation and amortization	2,578	2,244
Capital expenditures	834	2,789
Distribution
Net revenue	7,958	7,451
Operating Income (Loss)	751	598
Total assets	875	785
Depreciation and amortization	100	0
Capital expenditures	0	0
Real Estate
Net revenue	62	98
Operating Income (Loss)	(97)	(92)
Total assets	3,587	3,826
Depreciation and amortization	76	86
Capital expenditures	0	0
Fabrication Services
Net revenue	0	0
Operating Income (Loss)	0	0
Total assets	27	27
Depreciation and amortization	0	0
Capital expenditures	0	0
Corporate And Unallocated
Net revenue	0	0
Operating Income (Loss)	(147)	(123)
Total assets	278	131
Depreciation and amortization	0	0
Capital expenditures	$ 0	$ 0