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Product Warranty Provisions (Schedule Of Accrued Warranty) (Details) (USD $)	6 Months Ended
	Jun. 30, 2012
Product Warrantie Provisions [Abstract]
Warranty accrual, December 31, 2011	$ 691,832
Warranty expense incurred	256,866
Payments made	(355,275)
Warranty accrual, June 30, 2012	$ 593,423

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

+ References+ Details