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Summary of Significant Accounting Policies, Fair Value Measurements (Details) - Recurring [Member] - USD ($)
Sep. 30, 2021
Dec. 31, 2020
Level 1 [Member]    
Assets Measured at Fair Value on Recurring Basis [Abstract]    
Available-for-sale securities $ 0 $ 0
Common stock purchase warrant 0 0
Equity purchase put option 0 0
Fair value 0 0
Level 2 [Member]    
Assets Measured at Fair Value on Recurring Basis [Abstract]    
Available-for-sale securities 0 0
Common stock purchase warrant 0 0
Equity purchase put option 0 0
Fair value 0 0
Level 3 [Member]    
Assets Measured at Fair Value on Recurring Basis [Abstract]    
Available-for-sale securities 93,215 101,517
Common stock purchase warrant 0 0
Equity purchase put option 0 0
Fair value $ 93,215 $ 101,517