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Condensed Consolidated Balance Sheets (USD $)
Sep. 30, 2013
Dec. 31, 2012
Assets    
Cash and cash equivalents $ 1,792,000 $ 654,000
Accounts receivable, net of allowance for doubtful accounts of $19 and $4 at September 30, 2013 and December 31, 2012, respectively 398,000 273,000
Inventory, net 1,360,000 1,199,000
Prepaid expenses and other current assets 407,000 456,000
Restricted cash 50,000  
Total current assets 4,007,000 2,582,000
Property and equipment, net 851,000 1,134,000
Intangible assets, net 2,036,000 1,634,000
Deposits and other assets 33,000 20,000
Total assets 6,927,000 5,370,000
Liabilities, Redeemable Preferred Stock and Stockholders' Equity (Deficit)    
Accounts payable 522,000 969,000
Accrued liabilities 1,056,000 730,000
Deferred revenue 156,000 233,000
Related party payable 16,000 5,000
Advances 250,000 250,000
Fair value of warrant liability 4,389,000  
Total current liabilities 6,389,000 2,187,000
Commitments and contingencies      
Stockholders' Equity (Deficit)    
Common stock, $0.001 par value, 300,000,000 shares authorized, 134,169,565 and 87,388,815 issued and outstanding at September 30, 2013 and December 31, 2012, respectively 134,000 87,000
Additional paid-in capital 74,967,000 69,945,000
Deficit accumulated during the development stage (79,504,000) (71,792,000)
Total stockholders' deficit (4,403,000) (1,758,000)
Total liabilities, redeemable preferred stock and stockholders' equity (deficit) 6,927,000 5,370,000
Series G Preferred Stock [Member]
   
Liabilities, Redeemable Preferred Stock and Stockholders' Equity (Deficit)    
Convertible Redeemable Preferred stock 4,941,000 4,941,000
Series C Preferred Stock [Member]
   
Stockholders' Equity (Deficit)    
Preferred stock   $ 2,000