INVESTMENTS IN MARKETABLE SECURITIES (Details 1)	Dec. 31, 2020 USD ($)
Investments, Debt and Equity Securities [Abstract]
2021 – 2025 Cost	$ 156,000
2021 – 2025 Fair value	160,000
2026 – 2030 Cost	202,000
2026 – 2030 Fair value	221,000
2031 – thereafter Cost	226,000
2031 – thereafter Fair value	232,000
Debt Securities, Held-to-maturity	584,000
Debt Securities, Held-to-maturity, Fair Value	$ 613,000

Amount of investment in debt security measured at amortized cost (held-to-maturity).

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