Summary of Significant Accounting Policies Components of Accumulated Other Comprehensive Income (Details) - USD ($)	12 Months Ended
Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 1,554,587	$ 3,564,779	$ 1,570,971
Changes during year	202,597	(2,010,192)	1,993,808
Ending balance	1,757,184	1,554,587	3,564,779
Reclassifications of gain (loss) of marketable securities in net loss
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(5,135)	(54,660)	(48,284)
Changes during year, reclassifications	(37,356)	49,525	(6,376)
Ending balance	(42,491)	(5,135)	(54,660)
Cumulative Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	1,436,938	3,231,706	1,380,042
Changes during year, before reclassifications	(206,580)	(1,794,768)	1,851,664
Ending balance	1,230,358	1,436,938	3,231,706
Unrealized holding (loss) gain on marketable securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	122,784	387,733	239,213
Changes during year, before reclassifications	446,533	(264,949)	148,520
Ending balance	$ 569,317	$ 122,784	$ 387,733

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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