Organization and Summary of Significant Accounting Policies - Products Shipped to International Destinations Representing Greater Than Ten Percent of Net Revenue (Detail)

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Organization and Summary of Significant Accounting Policies - Products Shipped to International Destinations Representing Greater Than Ten Percent of Net Revenue (Detail)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
China [Member]
Information About Revenue And Geographic Areas [Line Items]
Percentages of revenue by country	38.00%	15.00%	24.00%
Taiwan [Member]
Information About Revenue And Geographic Areas [Line Items]
Percentages of revenue by country	31.00%	30.00%	13.00%
Japan [Member]
Information About Revenue And Geographic Areas [Line Items]
Percentages of revenue by country	14.00%	39.00%	57.00%