XML 90 R79.htm IDEA: XBRL DOCUMENT v3.21.1
Commitments and Contingencies - Summary Of Product Warranty Liability (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Commitments And Contingencies Disclosure [Abstract]    
Beginning balance $ 92,696 $ 94,482
Cost of warranty claims (38,850) (7,454)
Increase in warranty reserve 28,417 3,726
Ending balance $ 82,263 $ 90,754