Product Warranty Provisions (Tables)

3 Months Ended

Mar. 31, 2013

Product Warranty Provisions [Abstract]

Schedule Of Accrued Warranty

	March 31, 2013		December 31, 2012
Warranty accrual, beginning of the fiscal period	$	653,473	$	691,832
Warranty expense incurred		19,839		650,367
Payments made		(68,924)		(688,726)
Warranty accrual, end of the fiscal period	$	604,388	$	653,473