Annual report pursuant to Section 13 and 15(d)

Organization and Summary of Significant Accounting Policies (Details Narrative)

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Organization and Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ in Thousands
 12 Months Ended
Nov. 10, 2017
Jan. 25, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Net loss     $ 14,763 $ 23,912  
Net cash used in operating activities     7,170 9,063  
Accumulated deficit     $ 211,300 196,537  
Debt instrument, payment terms     As discussed further in Note 7, in June 2014, the Company entered into a term loan with Hercules Technology Growth Capital, Inc. (“Hercules Technology”), as administrative and collateral agent for the lenders thereunder and as lender, and Hercules Technology III, LP, (“HT III” and, together with Hercules Technology, “Hercules”) as lender (the “Hercules Term Loan”). The Hercules Term Loan has a liquidity covenant that requires the Company to maintain a cash balance of not less than $3.0 million at December 31, 2016.    
Cash and cash equivalents     $ 6,915 11,485 $ 18,247
Reverse stock split 1 for 12 reverse stock split 1 for 15 reverse stock split      
Impairment loss for property and equipment      
Impairment loss for finite-lived intangible assets      
Goodwill impairment      
Advertising expense     $ 84 31  
Unrecognized tax position     less than a 50%    
Interest or penalties      
Deferred financing costs       $ 592  
Accounts Receivable [Member] | One Customer [Member]          
Concentrations of credit risk     16.00% 11.00%  
Revenue [Member] | One Customer [Member]          
Concentrations of credit risk     10.00% 10.00%  
Revenue [Member] | Two Customer [Member]          
Concentrations of credit risk     17.00% 12.00%  
Hercules Term Loan [Member] | Minimum [Member]          
Cash and cash equivalents     $ 3,000