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14. Shareholder's Equity (Details 4) (USD $)
 3 Months Ended 12 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Warrants Outstanding        
Exercised         
Granted   310,000    
Range of Exercise Prices        
Beginning Balance Minimum   $ 35.00    
Beginning Balance Maximum   $ 54.00    
Granted   $ 3.00    
Weighted Average Remaining Life in Years        
Beginning Balance   3 years    
Granted   4 years 2 months 12 days    
Weighted Average Exercise Price        
Beginning Balance   $ 11.77 $ 46.00  
Exercised         
Ending Balance   $ 11.77 $ 46.00  
Weighted Average Remaining Life in Years        
Beginning Balance   2 years 7 months 6 days    
Granted   4 years 2 months 12 days    
Warrant [Member]
        
Warrants Outstanding        
Beginning Balance 518,069 1,322,852 595,302  
Canceled 198 (978,700)    
Exercised       0  
Granted    173,917 157,633  
Ending Balance 517,871 518,069 1,322,852  
Range of Exercise Prices        
Beginning Balance Minimum $ 3.00 $ 30.00 $ 65.00  
Beginning Balance Maximum $ 200.00 $ 200.00 $ 200.00  
Canceled    $ 30.00    
Exercised          
Granted   $ 3.00 $ 38.00  
Ending Balance Minimum $ 3.00 $ 3.00 $ 30.00  
Ending Balance Maximum $ 200.00 $ 200.00 $ 200.00  
Weighted Average Remaining Life in Years        
Beginning Balance 3 years 3 months 18 days 3 years 2 months 12 days 3 years 2 months 12 days  
Granted 0 years 4 years 2 months 12 days 4 years 3 months 18 days  
Ending Balance 3 years 3 years 3 months 18 days 3 years 2 months 12 days  
Weighted Average Exercise Price        
Beginning Balance $ 44.01 $ 44.07 $ 40.00 $ 200.00
Canceled $ 200.00 $ 30.00    
Exercised          
Granted    $ 3.00    
Ending Balance $ 44.01 $ 44.07 $ 40.00 $ 200.00
Warrants Exercisable        
Beginning Balance 503,069 1,269,102 595,302  
Cancelled 198 (939,950)    
Exercised       0  
Granted    173,917 103,883  
Ending Balance 502,871 503,069 1,269,102  
Weighted Average Remaining Life in Years        
Beginning Balance 3 years 3 months 18 days 3 years 2 months 12 days 3 years 2 months 12 days  
Granted 0 years 4 years 2 months 12 days 4 years 3 months 18 days  
Ending Balance 3 years 3 years 3 months 18 days 3 years 2 months 12 days  
Weighted Average Exercise Price        
Beginning Balance $ 44.07 $ 38.00 $ 200.00  
Canceled 200.00 30.00    
Exercised          
Granted    $ 3.00    
Ending Balance $ 44.01 $ 44.07 $ 38.00