XML 45 R1.htm IDEA: XBRL DOCUMENT v3.20.1
Cover Page - USD ($)
 12 Months Ended
Dec. 28, 2019
Mar. 09, 2020
Jun. 27, 2019
Document and Entity Information Document [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 28, 2019    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Document Transition Report false    
Entity File Number 0-19882    
Entity Registrant Name KOPIN CORPORATION    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 04-2833935    
Entity Address, Address Line One 125 North Drive,    
Entity Address, City or Town Westborough    
Entity Address, State or Province MA    
Entity Address, Postal Zip Code 01581-3335    
City Area Code 508    
Local Phone Number 870-5959    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 73,449,831
Entity Common Stock, Shares Outstanding   84,914,040  
Amendment Flag false    
Title of 12(b) Security Common Stock, par value $0.01    
Trading Symbol KOPN    
Entity Central Index Key 0000771266    
Current Fiscal Year End Date --12-28    
Security Exchange Name NASDAQ    
Entity Interactive Data Current Yes