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Financial Instruments (Marketable Debt Securities) (Details) - USD ($)	Dec. 28, 2019	Dec. 29, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 15,763,527	$ 23,239,502
Unrealized Losses	(10,530)	(321,486)
Fair Value	15,752,997	22,918,016
US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	8,304,229	13,064,418
Unrealized Losses	(7,359)	(253,495)
Fair Value	8,296,870	12,810,923
Corporate Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	7,459,298	10,175,084
Unrealized Losses	(3,171)	(67,991)
Fair Value	$ 7,456,127	$ 10,107,093

X

- Definition

Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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-Publisher FASB
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-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
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- Definition

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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-Topic 320
-SubTopic 10
-Section 50
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-Publisher FASB
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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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-Publisher FASB
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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