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Stockholders' Equity and Redeemable Convertible Preferred Stock (Details Narrative 1) - USD ($)
 1 Months Ended 12 Months Ended
May 23, 2016
Dec. 07, 2015
Dec. 02, 2015
Nov. 23, 2015
May 28, 2014
Dec. 31, 2013
Nov. 22, 2013
Mar. 06, 2013
Jan. 02, 2013
Dec. 31, 2015
Jun. 30, 2015
Sep. 30, 2013
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2013
Number of preferred stock authorized                   50,000,000     50,000,000 50,000,000  
Preferred stock, par value (in dollars per share)                   $ 0.0001     $ 0.0001 $ 0.0001  
Value of shares issued                         $ 2,140,000    
Number of shares cancelled,value                            
Net proceeds form offering                         $ 1,322,000  
December 2015 Offering [Member]                              
Net proceeds form offering     $ 3,400,000                        
December 2015 Offering [Member] | Warrant [Member]                              
Net proceeds form offering   $ 2,200,000                          
Series J Preferred Stock [Member]                              
Number of preferred stock authorized         20,000,000                    
Preferred stock, par value (in dollars per share)                   0.0001     $ 0.0001 $ 0.0001  
Preferred stock liquidation preference (in dollars per share)                   $ 0.0001     $ 0.0001 $ 0.0001  
Description of prefered stock voting rights        

Each holder of Series J Preferred Stock is entitled to vote on all matters submitted to stockholders of the Company and is entitled to a vote of 67.3% of the number of votes for each share of Common Stock into which the Series J Preferred Stock is convertible owned at the record date for the determination of stockholders entitled to vote on such matter.

                    
Preferred stock issued                        
Preferred stock outstanding                        
Series J Preferred Stock [Member] | Placement Agency Agreement [Member] | Direct Public Offering [Member] | Laidlaw & Company (UK) Ltd. [Member]                              
Number of shares issued in offering         10,000,000                    
Public offering price (in dollars per share)         $ 2.00                    
Net proceeds form offering         $ 18,400,000                    
Aggregate conversion shares         526,315                    
Legal fees         $ 180,000                    
Placement agent fees         1,320,000                    
Escrow fees         $ 40,000                    
Series K Preferred Stock [Member]                              
Number of preferred stock authorized     1,240                        
Preferred stock, par value (in dollars per share)                   $ 0.0001     $ 0.0001 $ 0.0001  
Preferred stock liquidation preference (in dollars per share)                   $ 1,000     $ 1,000 $ 1,000  
Preferred stock issued                   1,240     1,240 1,240  
Preferred stock outstanding                   1,240     1,240 1,240  
Series K Preferred Stock [Member] | December 2015 Offering [Member]                              
Number of shares issued                   1,240          
Series A Preferred Stock [Member]                              
Preferred stock, par value (in dollars per share)                   $ 0.0001     $ 0.0001 $ 0.0001  
Number of shares issued                         500,000    
Preferred stock liquidation preference (in dollars per share)                   $ 0.0001     $ 0.0001 $ 0.0001  
Preferred stock issued                        
Preferred stock outstanding                        
Series A Preferred Stock [Member] | Stockholder Rights Plan [Member]                              
Description of rights to purchase                

Distributed as a dividend at the rate of one right for each share of common stock.

            
Description of units                

Each right entitles the registered holder to purchase nineteen one-hundredths of a share (a “Unit”) of the Company’s Series A Preferred Stock.

            
Description of dividend preference                

Each Unit of Series A Preferred Stock will be entitled to an aggregate dividend of 100 times the dividend declared per share of common stock.

            
Rights redeem (in dollars per share)                 $ 0.001            
Rights expiration date                 Dec. 31, 2017            
Series C Preferred Stock [Member]                              
Preferred stock, par value (in dollars per share)                   $ 0.0001     $ 0.0001 $ 0.0001  
Preferred stock liquidation preference (in dollars per share)                   $ 0.0001     $ 0.0001 $ 0.0001  
Preferred stock issued                        
Preferred stock outstanding                        
Series C Preferred Stock [Member] | Warrant Exchange Agreements [Member] | Institutional Investors [Member] | November 2012 Private Placement [Member] | Warrant [Member]                              
Common stock warrants exchanged               229,337              
Description of stock conversion terms              

Convertible into one-nineteenth of a share of Common Stock at the option of the holder.

              
Series D Preferred Stock [Member]                              
Preferred stock, par value (in dollars per share)                   $ 0.0001     $ 0.0001 $ 0.0001  
Preferred stock liquidation preference (in dollars per share)                   $ 0.0001     $ 0.0001 $ 0.0001  
Preferred stock issued                   4,725     4,725 4,725  
Preferred stock outstanding                   4,725     4,725 4,725  
Series D Preferred Stock [Member] | North South Patent Portfolio Acquired 9/10/13 [Member]                              
Preferred stock, par value (in dollars per share)                       $ 0.0001      
Number of shares issued                       1,379,685      
Description of stock conversion terms                      

Convertible into ten-nineteenths of a share of Common Stock.

      
Series D-1 Preferred Stock [Member]                              
Preferred stock, par value (in dollars per share)             $ 0.0001     $ 0.0001     $ 0.0001 $ 0.0001  
Description of stock conversion terms            

Convertible into ten- nineteenths of a share of Common Stock.

                
Preferred stock liquidation preference (in dollars per share)                   $ 0.0001     $ 0.0001 $ 0.0001  
Preferred stock issued                   834     834 834  
Preferred stock outstanding                   834     834 834  
Series F-1 Preferred Stock [Member]                              
Preferred stock, par value (in dollars per share)             $ 0.0001                
Description of stock conversion terms            

Convertible, at the option of the holder at any time, into one-nineteenth of a share of Common Stock.

                
Preferred stock issued                        
Preferred stock outstanding                        
Series H Convertible Preferred Stock [Member]                              
Number of preferred stock authorized           459,043                 459,043
Preferred stock, par value (in dollars per share)           $ 83.50             $ 0.0001   $ 83.50
Number of shares issued                             459,043
Value of shares issued                             $ 38,300,000
Description of stock conversion terms                            

Each share of Series H Preferred Stock is convertible into ten-nineteenths of a share of Common Stock.
Preferred stock liquidation preference (in dollars per share)           $ 83.50                 $ 83.50
Description of prefered stock voting rights                            

Holders of the Series H Preferred Stock shall be entitled to vote on all matters submitted to the Company’s stockholders and shall be entitled to the number of votes equal to the number of shares of Common Stock into which the shares of Series H Preferred Stock are convertible, subject to applicable beneficial ownership limitations. 
Number of shares converted         10,526                    
Number of preferred stock converted         20,000                    
Preferred stock issued                   381,967     381,967  
Preferred stock outstanding                   381,967     381,967  
Series H Convertible Preferred Stock [Member] | RPX Corporation [Member]                              
Preferred stock liquidation preference (in dollars per share) $ 83.50                            
Series H Convertible Preferred Stock [Member] | Patent License Agreement [Member] | RPX Corporation [Member]                              
Number of shares cancelled       57,076                      
Number of shares cancelled,value       $ 4,765,846                      
Series H Convertible Preferred Stock [Member] | Patent License Agreement [Member] | RPX Corporation [Member]                              
Number of shares cancelled       57,076                      
Number of shares cancelled,value       $ 4,765,846,000                      
Series H Convertible Preferred Stock [Member] | Second Patent License Agreement [Member] | RPX Corporation [Member]                              
Number of shares cancelled 381,967                            
Number of shares cancelled,value $ 31,894,244                            
Series H Convertible Preferred Stock [Member] | Second Patent License Agreement [Member] | RPX Corporation [Member]                              
Number of shares cancelled 381,967                            
Number of shares cancelled,value $ 31,894,244,000                            
Series I Redeemable Convertible Preferred Stock [Member]                              
Number of preferred stock authorized           119,760                 119,760
Preferred stock, par value (in dollars per share)           $ 167.00             $ 0.0001   $ 167.00
Description of stock conversion terms                            

Each share of Series I Preferred Stock was convertible into twenty-nineteenths of a share of Common Stock.
Preferred stock liquidation preference (in dollars per share)           $ 167.00                 $ 167.00
Description of prefered stock voting rights                            

 Holders of the Series I Preferred Stock shall be entitled to vote on all matters submitted to its stockholders and shall be entitled to the number of votes equal to the number of shares of Common Stock into which the shares of Series I Preferred Stock were convertible, subject to applicable beneficial ownership limitations.
Preferred stock issued                        
Preferred stock outstanding                        
Redemption date                             Dec. 31, 2015
Description of partial redemption terms                            

(i) such number of shares of Series I Preferred Stock as had a stated value of $5.0 million; or (ii) such number of shares of Series I Preferred Stock as should, together with all voluntary and mandatory redemptions and conversions to Common Stock occurring prior to the applicable Partial Redemption Date, had an aggregate stated value of $5.0 million; or (iii) the remaining shares of Series I Preferred Stock issued and outstanding if such shares had an aggregate stated value of less than $5.0 million, in an amount of cash equal to its stated value plus all accrued but unpaid dividends, distributions and interest thereon, unless such holder of Series I Preferred Stock, in its sole discretion, elected to waive such Redemption Payment or convert such shares of Series I Preferred Stock (or a portion thereof) into Common Stock.
Interest on redemption payment default           15.00%                 15.00%
Description of collateral                            

Rockstar patent portfolio serves as collateral security.
Description of fundamental transaction                            

(i) 50% of the net proceeds of the Fundamental Transaction after deduction of the amount of net proceeds required to leave the Company with cash and cash equivalents on hand of $5.0 million and up until the net proceeds leave the Company with cash and cash equivalents on hand of $7.5 million and (ii) 100% of the net proceeds of the Fundamental Transaction thereafter.
Series I Redeemable Convertible Preferred Stock [Member] | RPX Corporation [Member]                              
Number of sahres redeemed                     5,601        
Value of shares redeemed                     $ 900,000        
Series I Redeemable Convertible Preferred Stock [Member] | Rockstar Consortium US LP [Member]                              
Number of shares issued           119,760                  
Value of shares issued           $ 20,000,000                  
Series I Redeemable Convertible Preferred Stock [Member] | Patent License Agreement [Member] | RPX Corporation [Member]                              
Number of shares cancelled       29,940                      
Number of shares cancelled,value       $ 5,000,000                      
Series K Convertible Preferred Stock [Member]                              
Number of preferred stock authorized     1,240                        
Preferred stock, par value (in dollars per share)     $ 1,000                   $ 0.0001    
Description of stock conversion terms    

Each share of Series K Preferred Stock is convertible into five thousand-nineteenths of a share of Common Stock.

                        
Description of prefered stock voting rights    

The Series K Preferred does not generally have any voting rights but are convertible into shares of Common Stock.

                        
Number of preferred stock converted                         326,315    
Preferred stock issued                   1,240     1,240  
Preferred stock outstanding                   1,240     1,240  
Series K Convertible Preferred Stock [Member] | December 2015 Offering [Member]                              
Number of shares issued   1,240