Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivable (Details Textual)

v3.21.1
Accounts Receivable (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Accounts Receivable (Textual)    
Recoveries collected for doubtful accounts $ 795,914 $ 10,018