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Stockholders' Equity and Redeemable Convertible Preferred Stock (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 12 Months Ended
Aug. 08, 2016
Mar. 04, 2016
Feb. 26, 2016
Dec. 07, 2015
Dec. 02, 2015
Jul. 21, 2015
Jul. 15, 2015
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Description of reverse stock split  

1-for-19

1-for-12 to 1-for-24

              
Common stock, authorized     100,000,000         100,000,000 100,000,000 100,000,000
Common stock, authorized previously     200,000,000              
Number of preferred stock authorized               50,000,000 50,000,000 50,000,000
Common stock, par value (in dollars per share)               $ 0.0001 $ 0.0001 $ 0.0001
Value of shares issued                 $ 2,140  
Net proceeds form offering                 $ 1,322
Series K Preferred Stock [Member]                    
Number of preferred stock authorized         1,240          
Deemed dividend related to beneficial conversion feature               $ 323   $ 323
July 2015 Financing [Member]                    
Net proceeds form offering             $ 1,300      
July 2015 Financing [Member] | Warrant [Member]                    
Net proceeds form offering           $ 985        
December 2015 Offering [Member]                    
Net proceeds form offering         $ 3,400          
December 2015 Offering [Member] | Series K Preferred Stock [Member]                    
Number of shares issued               1,240    
December 2015 Offering [Member] | Warrant [Member]                    
Net proceeds form offering       $ 2,200            
December 2015 Offering [Member] | Series A Warrants [Member]                    
Common stock warrants purchase               326,313   326,313
Exercise price (in dollars per share)               $ 3.80   $ 3.80
December 2015 Offering [Member] | Series A Warrants [Member] | Minimum [Member]                    
Warrants exercisable date               Dec. 07, 2015    
December 2015 Offering [Member] | Series A Warrants [Member] | Maximum [Member]                    
Warrants exercisable date               May 06, 2016    
December 2015 Offering [Member] | Series B Warrants [Member]                    
Common stock warrants purchase               261,051   261,051
Exercise price (in dollars per share)               $ 4.75   $ 4.75
December 2015 Offering [Member] | Series B Warrants [Member] | Minimum [Member]                    
Warrants exercisable date               Dec. 07, 2015    
December 2015 Offering [Member] | Series B Warrants [Member] | Maximum [Member]                    
Warrants exercisable date               Dec. 06, 2020    
Underwriting Agreement [Member] | IPO [Member]                    
Number of shares issued 1,592,357                  
Common stock, par value (in dollars per share) $ 1.57                  
Additional number of shares issued $ 231,349                  
Value of shares issued $ 2,100                  
Placement Agency Agreement [Member] | July 2015 Financing [Member] | Chardan Capital Markets, LLC ("Placement Agent") [Member]                    
Percentage of cash fee of gross proceeds             8.00%      
Payment for issuance cost             $ 25      
Placement Agency Agreement [Member] | July 2015 Financing [Member] | Chardan Capital Markets, LLC ("Placement Agent") [Member] | Institutional Investors [Member]                    
Number of shares issued             301,026      
Common stock, par value (in dollars per share)             $ 0.0001      
Placement Agency Agreement [Member] | July 2015 Financing [Member] | Chardan Capital Markets, LLC ("Placement Agent") [Member] | Institutional Investors [Member] | Warrant [Member]                    
Common stock warrants purchase             370,263      
Securities Purchase Agreement [Member] | July 2015 Financing [Member] | Institutional Investors [Member]                    
Description of units            

Each unit consisting of one-nineteenth of an Offered Share and a warrant to purchase 0.06 shares of Common Stock.

      
Price of per unit (in dollars per unit)             $ 4.864      
Securities Purchase Agreement [Member] | July 2015 Financing [Member] | Institutional Investors [Member] | Warrant [Member]                    
Common stock warrants purchase             0.06      
Exercise price (in dollars per share)             $ 8.17      
Warrants exercisable date             Jan. 22, 2016      
Warramt term             5 years      
Description of warrant terms            

Least 61 days’ prior notice from the holder to the Company, the holder will not have the right to exercise any portion of the Warrant if the holder, together with its affiliates, would beneficially own in excess of 4.99% of the number of shares of the Company’s common stock (including securities convertible into common stock) outstanding immediately after the exercise; provided, however, that the holder may not increase this limitation at any time in excess of 9.99%.

      
Purchase Agreement [Member] | December 2015 Offering [Member] | Institutional Investors [Member] | Class A Units [Member]                    
Number of shares issued         13,800          
Description of units        

Consisting of one-nineteenth of a share of Common Stock, a Series A Warrant and a Series B

          
Purchase Agreement [Member] | December 2015 Offering [Member] | Institutional Investors [Member] | Class B Units [Member]                    
Number of shares issued         1,240          
Description of units        

One share of Series K Preferred Stock, with a stated value of $1,000 per share and convertible into shares of Common Stock (on a 1 for 263 basis).

          
Employment Agreement [Member] | Mr. Frank Reiner [Member]                    
Number of non-option shares granted                 60,000  
Employment Agreement [Member] | Mr. Darrell Dotson [Member]                    
Number of non-option shares granted                 91,255