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Accounts Receivable (Tables)
3 Months Ended
Mar. 31, 2021
Accounts Receivable Net Current [Abstract]  
Schedule of Accounts Receivable, Net

Accounts receivable, net consists of the following:

 

 

 

March 31,

 

 

December 31,

 

 

 

2021

 

 

2020

 

Accounts receivable

 

$

5,749,660

 

 

$

7,491,397

 

Unbilled receivables

 

 

4

 

 

 

106

 

 

 

 

5,749,664

 

 

 

7,491,503

 

Less:  allowance for doubtful accounts

 

 

(15,989

)

 

 

(33,120

)

 

 

$

5,733,675

 

 

$

7,458,383