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Stockholders' Equity, Series C 6% Super Dividend Redeemable Convertible Preferred Stock (Details) - USD ($)
 1 Months Ended 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Jul. 31, 2011
Dec. 30, 2010
Dec. 29, 2010
Jan. 31, 2011
Dec. 31, 2024
Dec. 31, 2023
Redeemable Convertible Preferred Stock [Abstract]                
Common stock shares outstanding (in shares)             63,157,235 61,852,914
Minimum closing price of common stock (in dollars per share)             $ 1.29  
Series C 6% Super Dividend Redeemable Convertible Preferred Stock [Member]                
Redeemable Convertible Preferred Stock [Abstract]                
Preferred stock issued (in shares)       212   13    
Preferred stock par value (in dollars per share)         $ 0.01      
Shares issued, price (in dollars per share)       $ 10,000   $ 10,000    
Stated value of dividend payment (in dollars per share)       $ 10,000        
Gross proceeds from issuance of preferred stock       $ 2,120,000   $ 130,000    
Transaction costs       47,000        
Net proceeds from issuance of preferred stock       $ 2,073,000        
Warrants issued (in shares)       500        
Exercise price of warrant (in dollars per share)       $ 7.2        
Common stock share conversion price (in dollars per share)       $ 6        
Common stock shares issued (in shares)       1,667        
Preferred stock shares upon conversion (in shares) 33,756 40,193 8,334       293,340 293,340
Number of consecutive trading days       15 days     10 days  
Preferred stock, dividend rate       6.00%        
Preferred stock redemption price (in dollars per share)       $ 3     $ 3  
Post conversion dividend rights (in shares) 20 24 5          
Post conversion redemption right, return on investment multiplier amount             $ 10,000  
Closing days after conversion rights             30 days  
Series C 6% Super Dividend Redeemable Convertible Preferred Stock [Member] | Maximum [Member]                
Redeemable Convertible Preferred Stock [Abstract]                
Preferred stock issued (in shares)         1,000      
Stated value of dividend payment (in dollars per share)         $ 10,000      
Convertible preferred stock dividend       $ 100,000        
Series C 6% Super Dividend Redeemable Convertible Preferred Stock [Member] | Common Stock [Member]                
Redeemable Convertible Preferred Stock [Abstract]                
Common stock shares outstanding (in shares)             176 176
Minimum closing price of common stock (in dollars per share)       $ 18        
Series C 6% Super Dividend Redeemable Convertible Preferred Stock [Member] | Dividend Payment Scenario One [Member]                
Redeemable Convertible Preferred Stock [Abstract]                
Dividend as percentage of net sales       2.50%        
Series C 6% Super Dividend Redeemable Convertible Preferred Stock [Member] | Dividend Payment Scenario Two [Member]                
Redeemable Convertible Preferred Stock [Abstract]                
Dividend as percentage of net sales       1.25%