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The Company and Summary of Significant Accounting Policies (Details 2) (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Summary of changes in estimated product warranty liabilities
Balance at January 1	$ 427,459	$ 646,113
Utilization of accrual	(164,578)	(395,911)
Warranty expense	97,226	79,886
Balance at June 30	$ 360,107	$ 330,088

- 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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