Accrued Liabilities - Summary of Accrued Liabilities (Details) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Payables And Accruals [Abstract]
Accrued employee bonuses	$ 775,219	$ 436,799
Payroll and employee benefit accruals	414,177	694,058
Accrued product warranty	92,696	92,696
Other accrued liabilities	326,909	236,325
Total accrued liabilities	$ 1,609,001	$ 1,459,878