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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 02, 2019
FDIC insured amount $ 250,000 $ 250,000  
Advertising costs $ 0 $ 2,000  
Common stock, authorized shares 100,000,000 49,000,000  
MSCO shares [Member]      
Securities segregated regulations $ 0 $ 1,300,000  
Website and other internal technology [Member]      
Estimated useful life of software 3 years    
Single class common stock [Member]      
Common stock, authorized shares 100,000,000 49,000,000  
Promissory Note [Member] | Weeden Prime Services LLC [Member]      
Note payable     $ 3,000,000