Quarterly report pursuant to Section 13 or 15(d)

Other long-term liabilities (Details)

v3.21.2
Other long-term liabilities (Details) - USD ($)
Sep. 30, 2021
Dec. 31, 2020
Payables and Accruals [Abstract]    
Severance liability $ 338,475 $ 297,120
Customer deposit balance 19,102 366,947
Total other long-term liabilities $ 357,577 $ 664,067