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Business Combinations (Details) (USD $)
 12 Months Ended 0 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 0 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Dec. 25, 2010
Dec. 31, 2011
FDD
Dec. 25, 2010
FDD
Jan. 11, 2011
FDD
Jan. 11, 2011
FDD
Customer relationships
Jan. 11, 2011
FDD
Developed technology
Jan. 11, 2011
FDD
Trademark portfolio
Jul. 10, 2012
Ikanos
Mar. 31, 2012
Ikanos
Dec. 29, 2012
Ikanos
Dec. 29, 2012
Ikanos
Dec. 31, 2011
Ikanos
Jul. 10, 2012
Ikanos
Customer relationships
Jul. 10, 2012
Ikanos
Trade name
Jul. 10, 2012
As initially reported
Ikanos
Jul. 10, 2012
As initially reported
Ikanos
Customer relationships
Jul. 10, 2012
As initially reported
Ikanos
Trade name
Business Acquisition [Line Items]                                      
Cumulative percentage of voting interests acquired                     25.00%                
Percentage of voting interests acquired           100.00%                          
Additional equity interest, number of shares acquired                   70,748                  
Kopin's ownership percentage                       51.00% 51.00%            
Interest held by other investors and employees of Ikanos                       49.00% 49.00%            
Cash consideration                   $ 2,500,000                  
Fair market value of Kopin's previously held equity methohd investment in Ikanos                   81,000                  
Total purchase price           11,000,000       2,581,000 700,000                
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]                                      
Cash and marketable securities           1,000,605       2,594,000             2,594,000    
Accounts receivable           341,156       167,000             167,000    
Inventory           638,331                          
Property, plant and equipment           1,500,202       277,000             277,000    
Other identifiable assets           247,711       111,000             111,000    
Intangible assets             3,300,000 1,100,000 220,000           400,000 170,000   0 0
Measurement period adjustments - intangible assets                             400,000 170,000      
Goodwill 684,789 1,664,457 0     4,604,459       685,000             1,141,000    
Measurement period adjustments - goodwill                   (456,000)                  
Identifiable liabilities           (1,952,464)       (439,000)             (325,000)    
Measurement period adjustment, identifiable liabilities                   (114,000)                  
Noncontrolling interest in Ikanos                   (1,384,000)             (1,384,000)    
Total           11,000,000       2,581,000             2,581,000    
Remeasurement loss on the Company's previous investment in Ikanos                   558,000                  
Revenue included in the consolidated operations       4,900,000                              
Net loss included in consolidated operations       (6,900,000)               (1,500,000)              
Revenue         63,805,000               34,767,000 65,536,000          
Net income         $ 8,381,000               $ (20,580,000) $ 3,210,000