Product Warranty Provisions (Tables)

3 Months Ended

Mar. 31, 2018

Product Warranty Provisions [Abstract]

Schedule Of Accrued Warranty

	March 31, 2018		December 31, 2017
Warranty accrual, beginning of the fiscal period	$	164,365	$	222,845
Accrual adjustment for product warranty		(2,640)		32,679
Payments made		(16,553)		(91,159)
Warranty accrual, end of the fiscal period	$	145,172	$	164,365