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Summary of Significant Accounting Policies (Details) - USD ($) | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 28, 2019 | Sep. 28, 2019 | Jun. 29, 2019 | Mar. 30, 2019 | Dec. 29, 2018 | Sep. 29, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 28, 2019 | Dec. 29, 2018 | Dec. 30, 2017 | Dec. 30, 2018 | Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  |  |  |  |  |  |  |  | $ (29,374,222) | $ (34,482,492) | $ (25,380,115) |  |
Net Cash Provided by (Used in) Operating Activities |  |  |  |  |  |  |  |  | (21,026,854) | (28,103,782) | (25,912,698) |  |
Revenue, Remaining Performance Obligation, Amount | $ 9,300,000 |  |  |  |  |  |  |  | 9,300,000 |  |  |  |
Revenues | (8,727,000) | $ (6,139,000) | $ (9,110,000) | $ (5,543,000) | $ (7,741,000) | $ (5,126,000) | $ (5,944,000) | $ (5,654,000) | (29,518,809) | (24,465,005) | (27,841,490) |  |
Contract with Customer, Asset, after Allowance for Credit Loss | 921,082 |  |  |  |  |  |  |  | 921,082 |  |  |  | $ 3,089,663
Operating Lease, Right-of-Use Asset | 2,753,963 |  |  |  | 0 |  |  |  | $ 2,753,963 | 0 |  |  |
Product Warranty Term |  |  |  |  |  |  |  |  | 12 months |  |  |  |
Inventory, Net, Items Net of Reserve Alternative [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Raw materials | 2,630,156 |  |  |  | 2,548,139 |  |  |  | $ 2,630,156 | 2,548,139 |  |  |
Work-in-process | 711,475 |  |  |  | 1,526,552 |  |  |  | 711,475 | 1,526,552 |  |  |
Finished goods | 427,065 |  |  |  | 722,547 |  |  |  | 427,065 | 722,547 |  |  |
Inventory | (3,768,696) |  |  |  | (4,797,238) |  |  |  | (3,768,696) | (4,797,238) |  |  |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Asset retirement obligation, beginning balance |  |  |  | 254,098 |  |  |  | 269,877 | 254,098 | 269,877 |  |  |
Additional liabilities incurred |  |  |  |  |  |  |  |  | 7,785 | (15,779) |  |  |
Asset retirement obligation, ending balance | 261,883 |  |  |  | 254,098 |  |  |  | 261,883 | 254,098 | 269,877 |  |
Impairment of Long-term Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Other assets | 517,411 |  |  |  | 1,361,375 |  |  |  | 517,411 | 1,361,375 |  |  |
Accumulated deficit | (301,236,913) |  |  |  | (271,730,661) |  |  |  | (301,236,913) | (271,730,661) |  |  |
Research and development and other revenues |  |  |  |  |  |  |  |  | 9,234,921 | 5,253,890 | 2,946,685 |  |
Cost of product revenues |  |  |  |  |  |  |  |  | 20,901,538 | 15,831,441 | 18,118,418 |  |
Net Income (Loss) Attributable to Parent | $ (7,290,000) | $ (6,625,000) | $ (4,260,000) | $ (11,331,000) | (9,966,000) | $ (9,791,000) | $ (9,241,000) | $ (5,536,000) | $ (29,506,252) | (34,533,542) | $ (25,240,482) |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period | 12 months |  |  |  |  |  |  |  | 12 months |  |  |  |
Operating Lease, Liability, Current | $ 1,041,695 |  |  |  | $ 0 |  |  |  | $ 1,041,695 | $ 0 |  | $ 1,000,000.0 |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life of property, plant and equipment |  |  |  |  |  |  |  |  | 3 years |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Lease, Right-of-Use Asset |  |  |  |  |  |  |  |  |  |  |  | 3,700,000 |
Property, Plant and Equipment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life of property, plant and equipment |  |  |  |  |  |  |  |  | 10 years |  |  |  |
Impairment of Long-term Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Lease, Liability |  |  |  |  |  |  |  |  |  |  |  | $ 3,800,000 |
Restricted stock |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based Compensation [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  |  |  |  |  | 645,000 | 1,549,000 | 1,152,000 |  |
eMDT |  |  |  |  |  |  |  |  |  |  |  |  |
Principles of Consolidations [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Kopin's ownership percentage | 80.00% |  |  |  |  |  |  |  | 80.00% |  |  |  |
Share-based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based Compensation [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Nonvested common stock awards employment obligations |  |  |  |  |  |  |  |  | 1 year |  |  |  |
Share-based Payment Arrangement, Tranche One [Member] | Restricted stock |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based Compensation [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  |  |  |  |  | 640,000 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  |  |  |  |  |  |  | 20 days |  |  |  |
Share-based Payment Arrangement, Tranche Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based Compensation [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Nonvested common stock awards employment obligations |  |  |  |  |  |  |  |  | 2 years |  |  |  |
Share-based Payment Arrangement, Tranche Two [Member] | Restricted stock |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based Compensation [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  |  |  |  |  | 150,000 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  |  |  |  |  |  |  | 20 days |  |  |  |
Share-based Payment Arrangement, Tranche Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based Compensation [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Nonvested common stock awards employment obligations |  |  |  |  |  |  |  |  | 4 years |  |  |  |
Share-based Payment Arrangement, Tranche Three [Member] | Restricted stock |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based Compensation [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  |  |  |  |  | 150,000 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  |  |  |  |  |  |  | 20 days |  |  |  |
Unvested Restricted Stock Awards |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted Average Number of Shares Outstanding Reconciliation [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Antidilutive securities excluded from computation of earnings per share |  |  |  |  |  |  |  |  | 1,863,124 | 2,213,249 | 2,629,274 |  |
Product [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ (20,283,888) | $ (19,211,115) | $ (24,894,805) |  |
Impairment of Long-term Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of product revenues |  |  |  |  |  |  |  |  |  | 15,831,441 |  |  |
Net Income (Loss) Attributable to Parent |  |  |  |  |  |  |  |  |  | $ (34,533,542) |  |  |
Extended Warranties [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-term Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Contract with Customer, Liability | $ (39,000) |  |  |  |  |  |  |  | $ (39,000) |  |  |  |
Transferred over Time [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Percentage from Products and Services Transferred to Customers |  |  |  |  |  |  |  |  | 64.00% | 40.00% | 9.00% |  |
Transferred at Point in Time [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Percentage from Products and Services Transferred to Customers |  |  |  |  |  |  |  |  | 36.00% | 60.00% | 91.00% |  |
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-term Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of product revenues |  |  |  |  |  |  |  |  |  | $ 346,176 |  |  |
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Product [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | (515,786) |  |  |
Impairment of Long-term Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of product revenues |  |  |  |  |  |  |  |  |  | 977,902 |  |  |
Net Income (Loss) Attributable to Parent |  |  |  |  |  |  |  |  |  | 115,940 |  |  |
Calculated under Revenue Guidance in Effect before Topic 606 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of Long-term Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of product revenues |  |  |  |  |  |  |  |  |  | 5,600,066 |  |  |
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Product [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | (19,726,901) |  |  |
Impairment of Long-term Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of product revenues |  |  |  |  |  |  |  |  |  | 16,809,343 |  |  |
Net Income (Loss) Attributable to Parent |  |  |  |  |  |  |  |  |  | $ (34,649,482) |  |  |

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