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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 28, 2019
Accounting Policies [Abstract] |
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] | In accordance with the new revenue standard requirements, the impact of adoption on the Company's consolidated statement of operations for the fiscal year 2018 was as follows:
Statement of Operations | As Reported |  | Balances Without Adoption of Topic 606 |  | Effect of Change Higher/(Lower)
Net product revenues | $ | 19,211,115 |  |  | $ | 19,726,901 |  |  | $ | (515,786 | )
Research and development and other revenues | 5,253,890 |  |  | 5,600,066 |  |  | (346,176 | )
Cost of product revenues | 15,831,441 |  |  | 16,809,343 |  |  | (977,902 | )
Net loss attributable to Kopin Corporation | $ | (34,533,542 | ) |  | $ | (34,649,482 | ) |  | $ | 115,940 |
Schedule of Inventory, Current | Inventory consists of the following at December 28, 2019 and December 29, 2018:
| 2019 |  | 2018
Raw materials | $ | 2,630,156 |  |  | $ | 2,548,139 |
Work-in-process | 711,475 |  |  | 1,526,552 |
Finished goods | 427,065 |  |  | 722,547 |
| $ | 3,768,696 |  |  | $ | 4,797,238 |
Schedule of Change in Asset Retirement Obligation | The Company recorded asset retirement obligations ("ARO") liabilities of $0.3 million at December 28, 2019 and December 29, 2018. This represents the legal obligations associated with retirement of the Company’s assets when the timing and/or method of settling the obligation are conditional on a future event that may or may not be within the control of the Company. Changes in ARO liabilities for fiscal years 2019 and 2018 are as follows:
| 2019 |  | 2018
Beginning balance | $ | 254,098 |  |  | $ | 269,877 |
Exchange rate change | 7,785 |  |  | (15,779 | )
Ending balance | $ | 261,883 |  |  | $ | 254,098 |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share | The following were not included in weighted-average common shares outstanding-diluted because they are anti-dilutive:
| 2019 |  | 2018 |  | 2017
Nonvested restricted common stock | 1,863,124 |  |  | 2,213,249 |  |  | 2,629,274 |
Schedule of Accumulated Other Comprehensive Income (Loss) | The components of accumulated other comprehensive income are as follows:
| Cumulative Translation Adjustment |  | Unrealized holding (loss) gain on marketable securities |  | Reclassifications of gain (loss) of marketable securities in net loss |  | Accumulated Other Comprehensive Income
Balance as of December 31, 2016 | $ | 1,380,042 |  |  | $ | 239,213 |  |  | $ | (48,284 | ) |  | $ | 1,570,971 |
Changes during year | 1,851,664 |  |  | 148,520 |  |  | (6,376 | ) |  | 1,993,808 |
Balance as of December 30, 2017 | 3,231,706 |  |  | 387,733 |  |  | (54,660 | ) |  | 3,564,779 |
Changes during year | (1,794,768 | ) |  | (264,949 | ) |  | 49,525 |  |  | (2,010,192 | )
Balance as of December 29, 2018 | 1,436,938 |  |  | 122,784 |  |  | (5,135 | ) |  | 1,554,587 |
Changes during year | (206,580 | ) |  | 446,533 |  |  | (37,356 | ) |  | 202,597 |
Balance as of December 28, 2019 | $ | 1,230,358 |  |  | $ | 569,317 |  |  | $ | (42,491 | ) |  | $ | 1,757,184 |
Satisfaction of Performance Obligations [Table Text Block] | The Company's revenue recognition related to performance obligations that were satisfied at a point in time and over time were as follows:
Fiscal year ended | 2019 |  | 2018 |  | 2017
Point in time | 64 | % |  | 60 | % |  | 91 | %
Over time | 36 | % |  | 40 | % |  | 9 | %

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