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Cash, Cash Equivalents, Restricted Cash and Marketable Securities (Details Narrative) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Cash and Cash Equivalents [Abstract]    
Marketable securities, unrealized gain $ 237,500 $ 900
Marketable securities, unrealized gain loss 8,500  
Accumulated unrealized gain 228,200 228,200
Accumulated unrealized loss $ 900 $ 900