Quarterly report pursuant to Section 13 or 15(d)

Debt (Details Narrative)

v3.8.0.1
Debt (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended
Jul. 28, 2017
May 06, 2016
Apr. 27, 2016
Apr. 18, 2016
Apr. 04, 2016
Sep. 08, 2015
Jun. 30, 2014
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Warrant exercise price per share               $ 6.60    
Number of shares issued               3,022,073   2,280,407
Payment of debt               $ 5,043 $ 5,071  
Exchange Agreement [Member]                    
Percentage of loan bear interest rate               6.00%    
Debt maturity date               Apr. 03, 2018    
Debt principal balance               $ 300    
Debt instrument conversion price               $ 16.08    
Hercules Term Loan [Member]                    
Debt principal amount               $ 2,377   $ 7,421
Percentage of loan bear interest rate             10.95% 12.45%    
Term loan, payment terms               Principal payments commenced August 1, 2015 and are currently being made in equal monthly installments of approximately $500,000, with the remainder due at maturity.    
Debt instrument, periodic payment, principal               $ 500    
Hercules Term Loan [Member] | Prime Rate [Member]                    
Percentage of loan bear interest rate             7.70% 9.20%    
Hercules Term Loan [Member] | Closing Date [Member]                    
Percentage of loan bear interest rate               11.95%    
Term loan fee amount               $ 200    
Final payment fee for debt               1,700    
Riverside Merchant Partners, LLC [Member]                    
Debt principal amount               3,000    
Subordinated convertible promissory notes               $ 3,000    
Riverside Merchant Partners, LLC [Member] | Hercules and Riverside Debt Assignment [Member]                    
Debt principal amount         $ 1,000          
Debt additional principal     $ 1,000 $ 1,000 2,000          
Riverside Debt [Member]                    
Number of shares issued   11,667                
Value of true up shares to interest expense and equity   $ 199                
First, Second and Third Exchange Note [Member] | Exchange Agreement [Member]                    
Debt instrument converted shares               145,227    
Payment of debt               $ 840    
First Amendment to Loan and Security Agreement [Member] | Hercules Term Loan [Member]                    
Debt principal amount           $ 1,000   2,500    
Debt instrument, covenant description           The Amendment modified the liquidity covenant to reduce the required minimum cash and cash equivalents balance by $500,000 for every $1.0 million in principal paid, up to a minimum of $2.5 million. Once the Hercules Term Loan principal balance is below $2.5 million the Company is only required to maintain a cash and cash equivalents balance equal to the outstanding principal balance on the Hercules Term loan. The minimum cash and cash equivalents balance required to maintain compliance with the minimum liquidity covenant as of September 30, 2017, was $2.5 million.        
First Amendment to Loan and Security Agreement [Member] | Hercules Term Loan [Member] | Minimum [Member]                    
Debt principal amount           $ 500        
Debt principal balance           $ 2,500        
Exchange Agreement [Member] | Hercules and Riverside Debt Assignment [Member]                    
Debt principal amount         $ 2,000          
Warrant to purchase shares of common stock         8,333          
Debt additional principal         $ 2,000          
Number of shares issued         12,500          
Number of shares reduced         11,667          
Exchange Agreement [Member] | Hercules Term Loan [Member]                    
Fair value of warrants     107              
Debt beneficial conversion feature     268              
Financing costs     267              
Debt conversion original debt amount     244              
Exchange Agreement [Member] | Riverside Debt [Member]                    
Debt principal amount         $ 1,000          
Fair value of warrants         106          
Subordinated convertible promissory notes         $ 1,000          
Debt instrument conversion price         $ 17.16          
Common stock closing price per share         $ 19.56          
Debt instrument premium amount         $ 245          
Exchange Agreement [Member] | Riverside Debt [Member] | Warrant [Member]                    
Warrant to purchase shares of common stock         8,333          
Warrant exercise price per share         $ 19.44          
Exchange Agreement [Member] | Riverside Debt [Member] | Hercules Term Loan [Member]                    
Debt principal amount     $ 1,000 1,000            
Warrant to purchase shares of common stock     8,333              
Debt additional principal     $ 1,000 $ 1,000            
Warrant exercise price per share     $ 19.92              
Common stock closing price per share     $ 19.92 $ 24.24            
Debt beneficial conversion feature       $ 412            
North Stadium Investments, LLC [Member]                    
Debt principal amount $ 2,500                  
Percentage of loan bear interest rate 10.00%                  
Debt maturity date Jul. 28, 2018                  
Warrant to purchase shares of common stock 55,000                  
Sale of stock price per share $ 5.04                  
Warrant term 5 years                  
Fair value of warrants $ 200                  
Hercules Technology Capital, Inc. [Member] | Loan and Security Agreement [Member]                    
Debt principal amount             $ 20,000      
Debt maturity date             Jan. 01, 2018      
Hercules Term Loan [Member] | Riverside Merchant Partners, LLC [Member]                    
Debt principal amount               $ 3,000