v2.4.0.6
Income Taxes (Details Textual) (USD $)
 1 Months Ended 3 Months Ended 9 Months Ended
Mar. 31, 2012
Nov. 30, 2011
Sep. 29, 2012
Sep. 24, 2011
Sep. 29, 2012
Sep. 24, 2011
Dec. 31, 2011
Income Taxes (Textual) [Abstract]              
Effective income tax benefit (loss) rate         (16.50%) (24.70%)  
Income tax expense (benefit)     $ (74,000) $ 22,000 $ (49,000) $ (149,000)  
Refund of federal alternative minimum tax       257,000 257,000    
Estimated state and federal alternative minimum tax       108,000   108,000  
Amount of verdict   44,000,000     18,500,000    
Estimated state and federal alternative minimum tax carryforwards             539,000
Research and development tax credit carryforwards             490,000
Increase In Operating Loss Carry Forwards Due To Settlement Payment 18,500,000            
Company net deferred tax assets     18,256,000   18,256,000    
Minimum future taxable income needed to realize tax carryforwards         47,000,000    
Unrecognized tax liability     221,000   221,000    
Decrease in unrecognized tax liability         101,000    
U.S. Federal [Member]
              
Income Taxes (Textual) [Abstract]              
Operating loss carryforwards             9,535,000
Operating loss carryforwards, expiration date         2021    
Foreign [Member]
              
Income Taxes (Textual) [Abstract]              
Operating loss carryforwards             $ 6,626,000
Research [Member]
              
Income Taxes (Textual) [Abstract]              
Operating loss carryforwards, expiration date         2021