Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2013

Commitments and Contingencies [Abstract]

Schedule of Product Warranty Activity

The following table summarizes product warranty activity recorded during the nine months ended September 30, 2013 and 2012:

	September 30, 2013			September 30, 2012
Beginning balance - January 1		$	2,671,409	$	1,210,919
Additions for current period deliveries		590,056		399,623
Reductions for payments made		(1,848,240)		(1,915,253)
Reserve adjustment		-		3,273,324
Ending balance - September 30		$	1,413,225	$	2,968,613