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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Consolidated Statements Of Operations      
Sales $ 23,660 $ 27,671 $ 25,411
Cost of sales 14,462 16,338 14,680
Gross profit 9,198 11,333 10,731
Gain on legal settlement       750
Other costs:      
Research and development 1,260 1,329 1,197
Professional services 1,835 1,439 1,250
Salaries and related costs 3,235 3,178 3,114
Selling, general and administrative 4,894 4,341 4,347
Legal awards and settlement 1,640    1,591
Total other costs 12,864 10,287 11,499
Income (loss) from operations (3,666) 1,046 (18)
Other income (expense):      
Interest expense, net (237) (232) (237)
Issuance cost (664)      
Fees associated with refinance (543)      
Gain (loss) on change in fair value of derivative liabilities (842) 20 287
Total other income (expense), net (2,286) (212) 50
Income (loss) before income taxes (5,952) 834 32
Provision for current income taxes         
Benefit (provision) for deferred income taxes 1,613 (217) 77
Total benefit (provision) for income taxes - net 1,613 (217) 77
Net income (loss) $ (4,339) $ 617 $ 109
Earnings (loss) per share      
Basic (in dollars per share) $ (0.25) $ 0.04 $ 0.01
Diluted (in dollars per share) $ (0.25) $ 0.03 $ 0.01
Weighted average number of shares outstanding - basic (in shares) 17,670 17,631 17,597
Weighted average number of shares outstanding - dilutive (in shares) 17,670 17,787 17,669