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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Income Statement [Abstract]    
Net sales $ 2,595 $ 2,555
Cost of sales 1,767 1,610
Gross profit 828 945
Operating expenses:    
Selling expenses 142 92
General and administrative expenses 491 457
Research and development costs 384 375
Total operating expenses 1,017 924
Operating income (loss) (189) 21
Other income (expense):    
Interest income 1   
Interest expense (2) (2)
Total other income (expense) (1) (2)
Income (loss) from continuing operations before income taxes (190) 19
Provision (benefit) for income taxes (9) 1
Income (loss) from continuing operations (181) 18
Income from discontinued operations, net of income taxes 11 194
Net income (loss) (170) 212
Other comprehensive income, net of tax:    
Unrealized gain from marketable equity investments 12 56
Comprehensive income (loss) $ (158) $ 268
Basic and diluted income (loss) per share:    
Net income (loss) from continuing operations (in dollars per share) $ (0.04) $ 0.00
Income from discontinued operations (in dollars per share) $ 0.00 $ 0.06
Net income (loss) (in dollars per share) $ (0.04) $ 0.06
Weighted average common shares outstanding - basic (in shares) 4,208,957 3,344,697
Weighted average common shares outstanding - diluted (in shares) 4,227,650 3,353,447