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Borrowings (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 2 Months Ended 4 Months Ended 12 Months Ended
Dec. 08, 2016
Aug. 01, 2016
Mar. 31, 2016
Nov. 30, 2015
Jul. 31, 2015
Apr. 30, 2015
May 31, 2012
Mar. 31, 2016
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Number of shares issued                   13,320  
Number of shares issued, value                   $ 295  
Stock price (in dollars per share)                 $ 2.50 $ 8.15 $ 2.50
Debt discount                   $ 27 $ 177
Long-term debt                 $ 477 183 477
Common Stock [Member]                      
Number of shares issued 1,875,000                    
4% Secured Promissory Note [Member] | Investor [Member]                      
Debt face amount           $ 500          
Proceeds from notes issuance           $ 500          
Description of debt maturity date          

Maturity date in April 2016.

          
Description of collateral          

The Secured Promissory Note was collateralized by all of the Company’s personal property.

          
Debt discount           $ 113          
Accretion of debt discount                     79
4% Other Promissory Notes [Member] | Investor [Member]                      
Debt face amount                 500   500
Proceeds from notes issuance                 500    
Debt discount                 116    
Unamortized debt discount                 100   100
Long-term debt                 400 0 400
5% Promissory Note [Member]                      
Description of debt maturity date            

The note matured in May 2016.

        
Long-term debt                 5 0 5
Debt monthly payments             $ 1        
4% 2016 Unsecured Notes [Member] | Two Investors [Member]                      
Debt face amount     $ 310         $ 310      
4% 2016 Unsecured Notes [Member] | Two Investors [Member]                      
Debt face amount     16         $ 16      
Proceeds from notes issuance     $ 16                
Extinguishment of 4% Secured Promissory Note [Member] | Investor [Member]                      
Extinguishment of debt amount                     517
Net carrying amount                 $ 483   $ 483
Extinguishment of 4% 2016 Unsecured Notes [Member] | Two Investors [Member] | Common Stock [Member]                      
Number of shares issued               124,000      
Stock price (in dollars per share)     $ 2.50         $ 2.50      
Extinguishment of 4% 2016 Unsecured Notes [Member] | Two Investors [Member]                      
Loss on the extinguishment                   $ 9  
NAU Warrants [Member]                      
Number of shares purchased       210,526              
Exercise price (in dollars per share)       $ 15.00              
Warrant [Member] | 4% Secured Promissory Note [Member] | Investor [Member]                      
Number of shares purchased           69,333          
Fair value of the warrants           $ 113          
Warrant [Member] | 4% Other Promissory Notes [Member] | Investor [Member]                      
Number of shares purchased                 69,333   69,333
Fair value of the warrants                 $ 116    
Warrant [Member] | 4% 2016 Unsecured Notes [Member] | Two Investors [Member]                      
Number of shares purchased     9,032         9,032      
Series B Convertible Preferred Stock [Member] | Extinguishment of 4% Secured Promissory Note [Member] | Investor [Member]                      
Number of shares issued                     66,705
Loss on the extinguishment                     $ 34
Stock price (in dollars per share)                 $ 7.75   $ 7.75
Series B Convertible Preferred Stock [Member] | Extinguishment of 4% Secured Promissory Note [Member] | Investor [Member]                      
Stock price (in dollars per share)                 $ 7.75   $ 7.75
Series B Convertible Preferred Stock [Member] | Extinguishment of 4% 2016 Unsecured Notes [Member] | Two Investors [Member]                      
Number of shares issued     10,036                
Stock price (in dollars per share)     $ 7.75         $ 7.75      
Amended and Restated Letter Agreement [Member] | Extinguishment of Unsecured Promissory Note [Member]                      
Accrued interest       $ 1,313              
Extinguishment of debt amount       3,180              
Loss on the extinguishment                     $ 1,530
Amended and Restated Letter Agreement [Member] | NAU Warrants [Member]                      
Number of shares purchased         210,526            
Exercise price (in dollars per share)         $ 15.00            
Amended and Restated Letter Agreement [Member] | NAU Warrants [Member] | Extinguishment of Unsecured Promissory Note [Member]                      
Number of shares purchased, value       $ 330              
Stock price (in dollars per share)                   $ 7.50  
Expected term                   3 years  
Exercise price (in dollars per share)                   $ 15.00  
Volatility                   70.60%  
Risk free rate                   1.27%  
Amended and Restated Letter Agreement [Member] | Series A Preferred Stock [Member]                      
Number of shares issued         400,000            
Number of shares issued, value         $ 4,380            
Amended and Restated Letter Agreement [Member] | Series A Preferred Stock [Member] | Extinguishment of Unsecured Promissory Note [Member]                      
Number of shares issued       2,000,000              
Conversion and Termination Agreement [Member] | Series A Preferred Stock [Member] | NAU Ventures, LLC [Member]                      
Number of shares converted   400,000                  
Payment of additional cash   $ 175,890