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Leases - Summary (Details)
12 Months Ended
Dec. 31, 2021
USD ($)
lease
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Leases      
Number of operating leases | lease 2    
Operating Expenses.      
Leases      
Rent expense | $ $ 342,550 $ 327,205 $ 278,603