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The Company and Summary of Significant Accounting Policies (Details 2) (USD $)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Summary of changes in estimated product warranty liabilities
Balance at January 1	$ 427,459	$ 646,113
Utilization of accrual	(312,570)	(456,823)
Warranty expense	265,140	249,652
Balance at September 30	$ 380,029	$ 438,942

- 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.

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