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Income Taxes (Details Textual) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Tax (Textual)      
Interest or penalties related to unrecognized tax benefits $ 0 $ 0 $ 0
Accrued interest and penalties related to uncertain tax 0 0  
Uncertain tax positions 0    
Description of income tax withholding
Payments related to the license agreement with Sony Corporation are net of 10% income tax withholding as required by the Japanese government under the Sweden and Japan international tax treaty.
    
Amount withheld to offset future tax income tax payable 42,000 123,000 78,000
Expiration period of income tax withholding 5 years    
Open tax years 1998 through 2013    
Federal [Member]
      
Income Tax (Textual)      
Operating loss carryforwards 28,100,000    
Operating loss carryforwards, expiration date 2029    
Deferred tax assets related to excess tax benefits for stock based compensation 526,000    
State [Member]
      
Income Tax (Textual)      
Operating loss carryforwards 9,300,000    
Operating loss carryforwards, expiration date 2019    
Deferred tax assets related to excess tax benefits for stock based compensation 26,000    
Foreign [Member]
      
Income Tax (Textual)      
Operating loss carryforwards $ 0    
Operating loss carryforwards, expiration date indefinite