XML 14 R1.htm IDEA: XBRL DOCUMENT v3.22.0.1
Cover - USD ($)
 12 Months Ended
Dec. 25, 2021
Mar. 11, 2022
Jun. 25, 2021
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 25, 2021    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2021    
Current Fiscal Year End Date --12-25    
Entity File Number 0-19882    
Entity Registrant Name KOPIN CORPORATION    
Entity Central Index Key 0000771266    
Entity Tax Identification Number 04-2833935    
Entity Incorporation, State or Country Code DE    
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    
Title of 12(b) Security Common Stock, par value $0.01    
Trading Symbol KOPN    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 662,096,744
Entity Common Stock, Shares Outstanding   92,240,541  
Documents Incorporated By Reference Portions of the definitive proxy statement relating to the registrant’s annual meeting of stockholders are incorporated by reference in response to Items 10, 11, 12, 13 and 14 of Part III of this Form 10-K.    
ICFR Auditor Attestation Flag false    
Auditor Firm ID 49    
Auditor Name RSM US LLP    
Auditor Location Stamford, Connecticut