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BUSINESS SEGMENTS (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Net revenue $ 8,501 $ 8,838 $ 27,286 $ 28,573
Operating income (loss) (367) 123 (318) 473
Total assets 36,796 37,000 36,796 37,000
Depreciation and amortization 774 632 2,350 1,777
Capital expenditures 104 278 848 2,575
Manufacturing        
Net revenue 2,519 3,097 8,881 10,086
Operating income (loss) (102) (8) (201) 175
Total assets 9,871 9,205 9,871 9,205
Depreciation and amortization 101 30 297 88
Capital expenditures 89 39 124 40
Testing Services        
Net revenue 3,741 3,989 12,018 12,819
Operating income (loss) (447) (17) (540) (134)
Total assets 22,332 22,842 22,332 22,842
Depreciation and amortization 655 588 1,999 1,647
Capital expenditures 15 239 724 2,535
Distribution        
Net revenue 2,225 1,727 6,338 5,587
Operating income (loss) 207 150 599 492
Total assets 869 780 869 780
Depreciation and amortization 1 0 3 0
Capital expenditures 0 0 0 0
Real Estate        
Net revenue 16 25 49 81
Operating income (loss) (30) (13) (82) (30)
Total assets 3,584 3,914 3,584 3,914
Depreciation and amortization 17 14 51 42
Capital expenditures 0 0 0 0
Fabrication Services        
Net revenue [1] 0 0 0 0
Operating income (loss) [1] 0 0 0 0
Total assets [1] 23 26 23 26
Depreciation and amortization [1] 0 0 0 0
Capital expenditures [1] 0 0 0 0
Corporate And Unallocated        
Net revenue 0 0 0 0
Operating income (loss) 5 11 (94) (30)
Total assets 117 233 117 233
Depreciation and amortization 0 0 0 0
Capital expenditures $ 0 $ 0 $ 0 $ 0
[1] Fabrication services is a discontinued operation.