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Accounts Receivable - Schedule of Accounts Receivable, Net (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Accounts Notes And Loans Receivable [Line Items]    
Accounts receivable gross $ 7,491,503 $ 11,681,157
Less: allowance for doubtful accounts (33,120) (14,000)
Accounts receivable, total 7,458,383 11,667,157
Accounts Receivable    
Accounts Notes And Loans Receivable [Line Items]    
Accounts receivable gross 7,491,397 11,655,725
Unbilled Receivables    
Accounts Notes And Loans Receivable [Line Items]    
Accounts receivable gross $ 106 $ 25,432