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ACQUISITION OF IKANOS (Details) (USD $)
 0 Months Ended 9 Months Ended
Sep. 29, 2012
Dec. 31, 2011
Jul. 10, 2012
Ikanos
Sep. 29, 2012
Ikanos
Sep. 24, 2011
Ikanos
Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination [Abstract]          
Additional newly issued shares purchased     70,748    
Post-transaction ownership percentage by parent     51.00%    
Post-transaction ownership percentage by noncontrolling owners     49.00%    
Cash consideration     $ 2,500,000    
Fair market value of Kopin's previously held equity method investment in Ikanos     81,000    
Total purchase price     2,581,000    
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]          
Cash and marketable securities     2,594,000    
Accounts receivable     167,000    
Property, plant and equipment     277,000    
Goodwill 1,140,787 1,664,457 1,141,000    
Other identifiable assets     111,000    
Identifiable liabilities     (325,000)    
Noncontrolling interest in Ikanos     (1,384,000)    
Total     2,581,000    
Remeasurement loss on the Company's previous investment in Ikanos     558,000    
Business Acquisition, Pro Forma Information [Abstract]          
Revenues       70,120,000 96,566,000
Net (loss) income       $ (15,484,000) $ 3,068,000