Geographic and Significant Customer Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013 segment	Jun. 30, 2012
Geographic and Significant Customer Information [Abstract]
Number of operating segments			1
Total net revenues:
Total net revenues	$ 34,552	$ 53,181	$ 59,104	$ 108,673
United States [Member]
Total net revenues:
Total net revenues	16,328	13,872	25,761	25,449
China
Total net revenues:
Total net revenues	5,407	1,702	6,051	2,637
Japan [Member]
Total net revenues:
Total net revenues	2,018	2,511	7,230	6,850
South Korea [Member]
Total net revenues:
Total net revenues	5,594	29,638	9,141	57,109
Israel
Total net revenues:
Total net revenues	506	159	761	6,475
Other [Member]
Total net revenues:
Total net revenues	$ 4,699	$ 5,299	$ 10,160	$ 10,153