Segment Reporting, Geographic Information, and Significant Customers (Tables)

12 Months Ended

Dec. 31, 2012

Segment Reporting Geographic Information, and Significant Customers [Abstract]

Summary of revenues by geographic areas as percentage

	Years Ended December 31,
	2012			2011			2010
North America		41	%		42	%		37	%
Europe		13	%		13	%		15	%
Far East		46	%		45	%		46	%
Rest of the world		0	%		0	%		2	%
Total		100	%		100	%		100	%

Summary of geographic revenue as percentage of total revenues by country

	Years Ended December 31,
	2012			2011			2010
United States of America		38	%		40	%		36	%
Korea		36	%		37	%		35	%

Summary of customers comprising more than 10% in net revenue

	Years Ended December 31,
	2012			2011			2010
Customer A		24	%		20	%		14	%
Customer B			*		12	%		10	%
Customer C			*			*			*
Customer D			*			*			*
Customer E			*			*			*
Total		24	%		32	%		24	%

* Revenue derived from customer represented less than 10% for the period.

Summary of customers comprising 10% or greater of outstanding accounts and other receivable

	December 31,
	2012			2011			2010
Customer A			*			*		37	%
Customer B		33	%			*			*
Customer C		38	%		14	%			*
Customer D			*		14	%		13	%
Customer E		10	%			*			*

* Represents less than 10% of the Company’s outstanding accounts and other receivable.