Segment Reporting, Geographic Information, and Significant Customers (Details)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary of revenues by geographic areas as percentage
Revenues by geographic area, percentage	100.00%	100.00%	100.00%
North America [Member]
Summary of revenues by geographic areas as percentage
Revenues by geographic area, percentage	41.00%	42.00%	37.00%
Europe [Member]
Summary of revenues by geographic areas as percentage
Revenues by geographic area, percentage	13.00%	13.00%	15.00%
Far East [Member]
Summary of revenues by geographic areas as percentage
Revenues by geographic area, percentage	46.00%	45.00%	46.00%
Rest of the World [Member]
Summary of revenues by geographic areas as percentage
Revenues by geographic area, percentage	0.00%	0.00%	2.00%