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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, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Consolidated Statements Of Operations        
Sales $ 6,945 $ 6,042 $ 13,427 $ 11,738
Cost of sales 5,068 3,812 8,793 7,357
Gross profit 1,877 2,230 4,634 4,381
Other costs and expenses:        
Research and development 318 314 651 647
Professional services 287 383 544 836
Salaries and related costs 1,419 999 2,326 1,818
Selling, general and administrative 1,599 2,184 2,800 3,395
Total other costs and expenses 3,623 3,880 6,321 6,696
Income (loss) from operations (1,746) (1,650) (1,687) (2,315)
Interest expense, net (40) (60) (69) (116)
Change in fair value of derivative liabilities 1,454 37 (8,145) 4
Total other expense, net 1,414 (23) (8,214) (113)
Income (loss) before income taxes (332) (1,673) (9,901) (2,428)
Benefit (provision) for income taxes, net 583 554 545 899
Net income (loss) 251 (1,119) (9,356) (1,529)
Accretion on convertible preferred stock (222)   (426)   
Net Income (loss) attributable to common shareholders $ 29 $ (1,119) $ (9,782) $ (1,529)
Loss per share        
Basic (in dollars per share) $ 0 $ (0.06) $ (0.55) $ (0.09)
Diluted (in dollars per share) $ (0.07) $ (0.06) $ (0.55) $ (0.09)
Weighted average number of shares outstanding - basic (in shares) 17,717 17,669 17,667 17,660
Weighted average number of shares outstanding - dilutive (in shares) 21,176 17,669 17,767 17,660