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CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Consolidated Statements Of Operations        
Sales $ 6,042 $ 7,440 $ 11,738 $ 14,173
Cost of sales 3,812 4,584 7,357 8,521
Gross profit 2,230 2,856 4,381 5,652
Other costs and expenses:        
Research and development 314 349 647 647
Professional services 383 358 836 653
Salaries and related costs 806 788 1,624 1,570
Selling, general and administrative 1,336 1,121 2,548 2,146
Legal award 1,041    1,041   
Total other costs and expenses 3,880 2,616 6,696 5,016
Income (loss) from operations (1,650) 240 (2,315) 636
Change in fair value of derivative liabilities 37 44 4 27
Interest expense, net (60) (58) (116) (116)
Income (loss) before income taxes (1,673) 226 (2,427) 547
Benefit (provision) for income taxes, net 554 (74) 898 (208)
Net income (loss) $ (1,119) $ 152 $ (1,529) $ 339
Earnings (loss) per share        
Basic (in dollars per share) $ (0.06) $ 0.01 $ (0.09) $ 0.02
Diluted (in dollars per share) $ (0.06) $ 0.01 $ (0.09) $ 0.02
Weighted average number of shares outstanding- basic (in shares) 17,669 17,629 17,660 17,625
Weighted average number of shares outstanding - dilutive (in shares) 17,669 17,768 17,660 17,769