Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivable (Details Textual)

v3.21.2
Accounts Receivable (Details Textual) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Accounts Receivable (Textual)      
Recoveries collected for doubtful accounts     $ 10,018
Provision for doubtful accounts $ 161,202