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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2016
Mar. 31, 2015
Income Statement [Abstract]        
Net sales $ 5,337 $ 3,922 $ 14,873 $ 9,310
Cost of sales 3,977 2,877 10,916 6,741
Gross profit 1,360 1,045 3,957 2,569
Operating expenses:        
Selling expenses 195 363 665 691
General and administrative expenses 420 $ 592 1,407 $ 1,542
Impairment of goodwill and long-lived assets 245 245
Research and development costs 450 $ 480 1,313 $ 1,309
Total operating expenses 1,310 1,435 3,630 3,542
Operating income (loss) 50 (390) 327 (973)
Interest expense $ (10) (1) $ (36) (4)
Interest income $ 1 $ 6
Gain from sale of Investment in Ramsey Property $ 340 $ 340
Gain from disposal of equipment $ 4 $ 1 $ 18 $ 1
Realized gain on sale of investments 395 455
Income (loss) from continuing operations before income taxes $ 384 6 $ 649 (515)
Income tax (expense) benefit (16) (98) (16) 40
Income (loss) from continuing operations $ 368 (92) $ 633 (475)
Income from discontinued operations, net of income taxes 16 37
Net income (loss) $ 368 $ (76) $ 633 $ (438)
Basic and diluted net income (loss) per share:        
Income (loss) from continuing operations (in dollars per share) $ 0.09 $ (0.02) $ 0.15 $ (0.11)
Income from discontinued operations (in dollars per share) 0.01
Net income (loss) (in dollars per share) $ 0.09 $ (0.02) $ 0.15 $ (0.10)
Weighted average common shares outstanding:        
Basic (in shares) 4,151 4,158 4,145 4,179
Diluted (in shares) 4,195 4,158 4,169 4,179
Common shares outstanding (in shares) 4,152 4,140 4,152 4,140