The Company and Summary of Significant Accounting Policies (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Sales by geographic area
Percentage of Sales by Geographic Area	100.00%	100.00%	100.00%	100.00%
United States [Member]
Sales by geographic area
Percentage of Sales by Geographic Area	81.00%	81.00%	83.00%	78.00%
Other Countries [Member]
Sales by geographic area
Percentage of Sales by Geographic Area	19.00%	19.00%	17.00%	22.00%