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Business Combinations (Details) (USD $)
 12 Months Ended 0 Months Ended 3 Months Ended 6 Months Ended 0 Months Ended 3 Months Ended 3 Months Ended
Dec. 28, 2013
Dec. 29, 2012
Dec. 31, 2011
Apr. 17, 2013
Jul. 10, 2012
Ikanos
Mar. 31, 2012
Ikanos
Dec. 29, 2012
Ikanos
Dec. 28, 2013
Ikanos
Sep. 28, 2013
Ikanos
Jul. 10, 2012
Ikanos
Customer relationships
Jul. 10, 2012
Ikanos
Trade name
Apr. 17, 2013
eMDT
Dec. 28, 2013
eMDT
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
Apr. 17, 2013
Ownership Increases In Subsidiaries Affiliates
Business Acquisition Two
Apr. 17, 2013
Noncontrolling Interest
Business Acquisition Two
Business Acquisition [Line Items]                                    
Cumulative percentage of voting interests acquired           25.00%           51.00%            
Additional equity interest, number of shares acquired         70,748                          
Kopin's ownership percentage               58.00%                    
Equity Method Investment, Ownership Percentage                 25.00%               25.00%  
Payments to Acquire Investments $ 3,583,611 $ 2,249,784 $ 1,980,609                             $ 200,000
Business Acquisition, Purchase Price Allocation, Goodwill Amount       400,000                            
Purchase Price Allocation                                    
Cash consideration         2,500,000                          
Fair market value of Kopin's previously held equity methohd investment in Ikanos         81,000                          
Total purchase price         2,581,000 700,000           400,000 300,000          
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]                                    
Cash and marketable securities         2,594,000                 2,594,000        
Accounts receivable         167,000                 167,000        
Property, plant and equipment         277,000                 277,000        
Other identifiable assets         111,000                 111,000        
Intangible assets                   400,000 170,000       0 0    
Measurement period adjustments - intangible assets                   400,000 170,000              
Goodwill 1,016,132 684,789 1,664,457   685,000                 1,141,000        
Measurement period adjustments - goodwill         (456,000)                          
Identifiable liabilities         (439,000)                 (325,000)        
Measurement period adjustment, identifiable liabilities         (114,000)                          
Noncontrolling interest in Ikanos         (1,384,000)                 (1,384,000)        
Total         2,581,000                 2,581,000        
Remeasurement loss on the Company's previous investment in Ikanos         558,000                          
Net loss included in consolidated operations             (1,500,000)                      
Revenue 23,103,000 36,142,000                                
Net income $ (4,670,000) $ (18,805,000)