Accrued Expenses - Changes in Accrued Warranty Obligations (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accrued Expenses
Accrued Warranty Obligations, beginning of period	$ 143,898	$ 98,893	$ 218,047
Reductions for Settling Warranties	(342,392)	(193,503)	(204,583)
Warranties Issued During Period	383,538	238,508	85,429
Accrued Warranty Obligations, end of period	$ 185,044	$ 143,898	$ 98,893