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Condensed Consolidated Statements of Operations (Unaudited) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Income Statement [Abstract]        
Net revenues $ 1,974 $ 283 $ 3,138 $ 822
Cost of revenues 494 238 743 393
Gross margin 1,480 45 2,395 429
Operating expenses:        
Product research and development 1,478 382 2,165 658
Sales and marketing 1,718 363 2,517 715
General and administrative 1,691 921 2,686 1,785
Total operating expenses 4,887 1,666 7,368 3,158
Operating loss (3,407) (1,621) (4,973) (2,729)
Other expense, net:        
Interest expense    (81)    (135)
Non-cash items related to debt discounts and deferred financing fees and the valuation of conversion features and warrants    (1,014)    (9,568)
Total other expense, net    (1,095)    (9,703)
Loss before provision for income taxes (3,407) (2,716) (4,973) (12,432)
Provision for income taxes 20 6 42 11
Net loss $ (3,427) $ (2,722) $ (5,015) $ (12,443)
Basic and diluted loss per share $ (0.10) $ (0.10) $ (0.15) $ (0.50)
Basic and diluted – weighted average shares used in per share computations 32,969 27,642 32,889 25,039