Geographic and Significant Customer Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Total net revenues:
Total net revenues	$ 24,552	$ 55,492
United States [Member]
Total net revenues:
Total net revenues	9,433	11,577
Japan [Member]
Total net revenues:
Total net revenues	5,212	4,339
South Korea [Member]
Total net revenues:
Total net revenues	3,547	27,471
Israel
Total net revenues:
Total net revenues	255	6,316
Other [Member]
Total net revenues:
Total net revenues	$ 6,105	$ 5,789