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Schedule of Restated Consolidated Statement of Operations (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 26, 2020
Sep. 26, 2020
Jun. 27, 2020
Mar. 28, 2020
Dec. 28, 2019
Sep. 28, 2019
Jun. 29, 2019
 [1]
Mar. 30, 2019
Dec. 26, 2020
Dec. 28, 2019
Dec. 29, 2018
Product Information [Line Items]                      
Revenues                 $ 40,127,669 $ 29,518,809 $ 24,465,005
Cost of product revenues                 21,398,381 20,901,538 15,831,441
Net loss attributable to Kopin Corporation $ 1,263,000 $ (957,000) $ (1,122,000) $ (3,596,000) $ (7,290,000) $ (6,625,000) $ (4,260,000) $ (11,331,000) (4,411,112) (29,506,252) (34,533,542)
Balances Without Adoption of Topic 606 [Member]                      
Product Information [Line Items]                      
Cost of product revenues                     16,809,343
Net loss attributable to Kopin Corporation                     (34,649,482)
Effect of Change Higher/(Lower) [Member]                      
Product Information [Line Items]                      
Cost of product revenues                     (977,902)
Net loss attributable to Kopin Corporation                     115,940
Net Product Revenues [Member]                      
Product Information [Line Items]                      
Revenues                 28,517,874 20,283,888 19,211,115
Net Product Revenues [Member] | Balances Without Adoption of Topic 606 [Member]                      
Product Information [Line Items]                      
Revenues                     19,726,901
Net Product Revenues [Member] | Effect of Change Higher/(Lower) [Member]                      
Product Information [Line Items]                      
Revenues                     (515,786)
Research and Development and Other Revenues [Member]                      
Product Information [Line Items]                      
Revenues                 $ 11,609,795 $ 9,234,921 5,253,890
Research and Development and Other Revenues [Member] | Balances Without Adoption of Topic 606 [Member]                      
Product Information [Line Items]                      
Revenues                     5,600,066
Research and Development and Other Revenues [Member] | Effect of Change Higher/(Lower) [Member]                      
Product Information [Line Items]                      
Revenues                     $ (346,176)
[1] Includes $3.5 million revenue from licensing functional IP for the three month period ended June 29, 2019.