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Summary of Significant Accounting Policies (Details) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 29, 2018 | Sep. 29, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 30, 2017 | Sep. 30, 2017 | Jul. 01, 2017 | Apr. 01, 2017 | Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016 | Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  |  |  |  |  |  |  |  | $ (34,482,492) | $ (25,380,115) | $ (23,031,145) |
Net Cash Provided by (Used in) Operating Activities |  |  |  |  |  |  |  |  | (28,103,782) | (25,912,698) | (26,174,695) |
Revenue, Remaining Performance Obligation, Amount | $ 8,000,000.0 |  |  |  |  |  |  |  | 8,000,000.0 |  |  |
Revenues | (7,741,000) | $ (5,126,000) | $ (5,944,000) | $ (5,654,000) | $ (11,397,000) | $ (6,139,000) | $ (5,927,000) | $ (4,378,000) | (24,465,005) | (27,841,490) | (22,642,566) |
Contract with Customer, Asset, Net | 3,089,663 |  |  |  | 704,863 |  |  |  | $ 3,089,663 | 704,863 |  | $ 3,555,137
Product Warranty Term |  |  |  |  |  |  |  |  | 12 months |  |  |
Inventory, Net, Items Net of Reserve Alternative [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Raw materials | 2,548,139 |  |  |  | 2,070,153 |  |  |  | $ 2,548,139 | 2,070,153 |  |
Work-in-process | 1,526,552 |  |  |  | 1,829,805 |  |  |  | 1,526,552 | 1,829,805 |  |
Finished goods | 722,547 |  |  |  | 1,180,839 |  |  |  | 722,547 | 1,180,839 |  |
Inventory | (4,797,238) |  |  |  | (5,080,797) |  |  |  | (4,797,238) | (5,080,797) |  | (3,998,168)
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Asset retirement obligation, beginning balance |  |  |  | 269,877 |  |  |  | 246,922 | 269,877 | 246,922 |  |
Additional liabilities incurred |  |  |  |  |  |  |  |  | (15,779) | 22,955 |  |
Asset retirement obligation, ending balance | 254,098 |  |  |  | 269,877 |  |  |  | 254,098 | 269,877 | 246,922 |
Impairment of Long-term Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Other assets | 1,649,401 |  |  |  | 3,842,068 |  |  |  | 1,649,401 | 3,842,068 |  | 4,242,068
Total contract liabilities and billings in excess of revenue earned |  |  |  |  | 1,555,883 |  |  |  |  | 1,555,883 |  |
Contract with Customer, Liability |  |  |  |  |  |  |  |  |  |  |  | (664,146)
Accumulated deficit | (271,730,661) |  |  |  | (240,256,502) |  |  |  | (271,730,661) | (240,256,502) |  | (237,197,119)
Research and development and other revenues |  |  |  |  |  |  |  |  | 5,253,890 | 2,946,685 | 1,527,441 |
Cost of product revenues |  |  |  |  |  |  |  |  | 15,831,441 | 18,118,418 | 17,814,271 |
Net Income (Loss) Attributable to Parent | $ (9,966,000) | $ (9,791,000) | $ (9,241,000) | $ (5,536,000) | $ (1,803,000) | $ (8,247,000) | $ (7,332,000) | $ (7,858,000) | $ (34,533,542) | $ (25,240,482) | $ (23,568,717) |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period | 12 months |  |  |  |  |  |  |  | 12 months |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Operating Lease, Right-of-Use Asset | $ 3,500,000 |  |  |  |  |  |  |  | $ 3,500,000 |  |  |
Property, Plant and Equipment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Useful life of property, plant and equipment |  |  |  |  |  |  |  |  | 3 years |  |  |
Impairment of Long-term Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Operating Lease, Liability | 3,500,000 |  |  |  |  |  |  |  | $ 3,500,000 |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Operating Lease, Right-of-Use Asset | 4,000,000.0 |  |  |  |  |  |  |  | $ 4,000,000.0 |  |  |
Property, Plant and Equipment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Useful life of property, plant and equipment |  |  |  |  |  |  |  |  | 10 years |  |  |
Impairment of Long-term Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Operating Lease, Liability | $ 4,000,000.0 |  |  |  |  |  |  |  | $ 4,000,000.0 |  |  |
Restricted stock |  |  |  |  |  |  |  |  |  |  |  |
Stock-based Compensation [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  |  |  |  |  | 1,549,000 | 1,152,000 | 1,663,000 |
eMDT |  |  |  |  |  |  |  |  |  |  |  |
Principles of Consolidations [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Kopin's ownership percentage | 80.00% |  |  |  |  |  |  |  | 80.00% |  |  |
Share-based Compensation Award, Tranche One [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock-based Compensation [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Nonvested common stock awards employment obligations |  |  |  |  |  |  |  |  | 1 year |  |  |
Share-based Compensation Award, 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 Compensation Award, Tranche Two [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock-based Compensation [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Nonvested common stock awards employment obligations |  |  |  |  |  |  |  |  | 2 years |  |  |
Share-based Compensation Award, 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 Compensation Award, Tranche Three [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stock-based Compensation [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Nonvested common stock awards employment obligations |  |  |  |  |  |  |  |  | 4 years |  |  |
Share-based Compensation Award, 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 |  |  |  |  |  |  |  |  | 2,213,249 | 2,629,274 | 3,007,674 |
Product [Member] |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ (19,211,115) | $ (24,894,805) | $ (21,115,125) |
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 | $ (400,000) |  |  |  |  |  |  |  | $ (400,000) |  |  |
Transferred over Time [Member] |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Percentage from Products and Services Transferred to Customers |  |  |  |  |  |  |  |  | 40.00% | 9.00% | 5.00% |
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 |  |  |  |  |  |  |  |  | 60.00% | 91.00% | 95.00% |
Accounting Standards Update 2014-09 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Contract with Customer, Asset, Net |  |  |  |  |  |  |  |  |  |  |  | 2,850,274
Inventory, Net, Items Net of Reserve Alternative [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Inventory |  |  |  |  |  |  |  |  |  |  |  | (1,082,629)
Impairment of Long-term Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Other assets |  |  |  |  |  |  |  |  |  |  |  | 400,000
Contract with Customer, Liability |  |  |  |  |  |  |  |  |  |  |  | (891,737)
Accumulated deficit |  |  |  |  |  |  |  |  |  |  |  | $ 3,059,383
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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