The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Goodwill and Intangibles (Details) - USD ($)	9 Months Ended	12 Months Ended
Goodwill and Intangibles (Details) - USD ($)	Sep. 30, 2017	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Goodwill [Roll Forward]
Beginning Balance	$ 844,023	$ 844,023
March 2017 acquisition		1,488,650
Goodwill, Impairment Loss		(600,086)	$ 0	$ 0
Goodwill, Foreign Currency Translation Gain (Loss)		47,660
Ending Balance		1,780,247	844,023
Amortization of Intangible Assets		1,600,000	0	$ 600,000
Intangible Assets, Gross (Excluding Goodwill)		2,500,000
Finite-Lived Intangible Assets, Accumulated Amortization		(1,600,000)
Intangible Assets, Net (Excluding Goodwill)		883,636
Finite-Lived Intangible Asset, Useful Life	1 year
Kopin United States
Goodwill [Roll Forward]
Beginning Balance	$ 844,023	844,023
March 2017 acquisition		0
Goodwill, Impairment Loss		0
Goodwill, Foreign Currency Translation Gain (Loss)		47,660
Ending Balance		891,683	844,023
Industrial
Goodwill [Roll Forward]
Beginning Balance	$ 0	0
March 2017 acquisition		1,488,650
Goodwill, Impairment Loss		(600,086)
Goodwill, Foreign Currency Translation Gain (Loss)		0
Ending Balance		$ 888,564	$ 0