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Fair Value Measurements Earnings Recognition (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance $ 483,804 $ 498,086
Total (earnings) loss recognized in earnings (10,953) (14,282)
Ending Balance $ 472,851 $ 483,804