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CASH AND CASH EQUIVALENTS AND MARKETABLE DEBT SECURITIES (Tables) | 9 Months Ended
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Sep. 25, 2021
Cash and Cash Equivalents [Abstract] |
SCHEDULE OF AVAILABLE-FOR-SALE MARKETABLE DEBT SECURITIES | Investments in available-for-sale marketable debt securities were as follows at September 25, 2021 and December 26, 2020: SCHEDULE OF AVAILABLE-FOR-SALE MARKETABLE DEBT SECURITIES
|  | Amortized Cost |  |  | Unrealized Gains |  |  | Fair Value |
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
U.S. government and agency backed securities |  | $ | 1,001,086 |  |  | $ | 1,003,941 |  |  | $ | 5,464 |  |  | $ | 19,179 |  |  | $ | 1,006,550 |  |  | $ | 1,023,120 |
Corporate debt |  |  | 2,400,000 |  |  |  | 2,603,704 |  |  |  | 7,339 |  |  |  | 8,857 |  |  |  | 2,407,339 |  |  |  | 2,612,561 |
Total |  | $ | 3,401,086 |  |  | $ | 3,607,645 |  |  | $ | 12,803 |  |  | $ | 28,036 |  |  | $ | 3,413,889 |  |  | $ | 3,635,681 |
SCHEDULE OF MARKETABLE DEBT SECURITIES | The contractual maturity of the Company’s marketable debt securities was as follows at September 25, 2021: SCHEDULE OF MARKETABLE DEBT SECURITIES
|  | Less than One year |  |  | One to Five years |  |  | Total |
U.S. government and agency backed securities |  | $ | 1,006,550 |  |  | $ | — |  |  | $ | 1,006,550 |
Corporate debt |  |  | 900,324 |  |  |  | 1,507,015 |  |  |  | 2,407,339 |
Total |  | $ | 1,906,874 |  |  | $ | 1,507,015 |  |  | $ | 3,413,889 |

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 + Details
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- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
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