Condensed Statements of Operations (Unaudited) (USD $)
3 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Condensed Statements of Operations (Unaudited) [Abstract]    
Net revenues $ 4,122,000 $ 4,859,000
Cost of revenues 2,496,000 2,860,000
Gross profit 1,626,000 1,999,000
Expenses:    
Selling, general and administrative 1,796,000 2,316,000
Research and development 838,000 923,000
Gain on sale of product line (2,000,000) 0
Total operating expenses 634,000 3,239,000
Interest and other income, net 3,000 32,000
Net income (loss) $ 995,000 $ (1,208,000)
Per share data:    
Basic net income (loss) per common share (in dollars per share) $ 0.06 $ (0.07)
Diluted net income (loss) per common share (in dollars per share) $ 0.06 $ (0.07)
Weighted average common shares outstanding:    
Basic (in shares) 16,515,846 16,363,033
Diluted (in shares) 16,520,275 16,363,033