Quarterly report pursuant to Section 13 or 15(d)

SHORT-TERM INVESTMENTS (Details Narrative)

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SHORT-TERM INVESTMENTS (Details Narrative) - USD ($)
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]      
Amortized cost of available-for-sale debt securities $ 23,217,000   $ 82,448,000
Realized gains or losses on sale or maturity of available-for-sale debt securities $ 0 $ 0