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CASH AND EQUIVALENTS AND MARKETABLE SECURITIES (Details) - USD ($)	Sep. 28, 2019	Dec. 29, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 17,266,113	$ 23,239,502
Unrealized Losses	(7,609)	(321,486)
Fair Value	17,258,504	22,918,016
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Less than One year	2,799,995
One to Five years	14,458,509
Total	17,258,504
U.S. government and agency backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	9,305,150	13,064,418
Unrealized Losses	(5,730)	(253,495)
Fair Value	9,299,420	12,810,923
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Less than One year	298,320
One to Five years	9,001,100
Total	9,299,420
Corporate debt
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	7,960,963	10,175,084
Unrealized Losses	(1,879)	(67,991)
Fair Value	7,959,084	$ 10,107,093
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Less than One year	2,501,675
One to Five years	5,457,409
Total	$ 7,959,084

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