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BASIS OF PRESENTATION (Details) (USD $)
 3 Months Ended 9 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 28, 2013
Sep. 29, 2012
Dec. 29, 2012
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]          
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent $ 3,700,000        
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Additional Interest Issued to Parent 0.15        
Gain (Loss) on Sale of Business     33,452,176 0  
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax     (3,217,344)    
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax 126,461 (150,520) (1,438,709) 1,220,149  
Stockholders' Equity Attributable to Noncontrolling Interest 183,283   183,283   6,352,230
Kowon
          
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]          
Kopin's ownership percentage 93.00%   93.00%    
Ikanos
          
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]          
Kopin's ownership percentage 51.00%   51.00%    
eMDT
          
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]          
Kopin's ownership percentage 51.00%   51.00%    
Accumulated Translation Adjustment
          
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]          
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax 100,000   100,000    
Accumulated Net Unrealized Investment Gain (Loss)
          
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]          
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax (1,400,000)        
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax (1,900,000)        
Business Acquisition One
          
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]          
Gain (Loss) on Sale of Business (1,600,000)        
Accumulated Other Comprehensive Income
          
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]          
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax     (3,231,180)    
Stockholders' Equity Attributable to Noncontrolling Interest $ 355,300   $ 355,300