Segment and Geographic Information (Revenue by Major Geographic Area) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013 segment	Dec. 29, 2012	Dec. 31, 2011
Segment Reporting [Abstract]
Number of industry segments	1
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 332,525	$ 279,256	$ 318,366
Total revenue, percent	100.00%	100.00%	100.00%
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	28,506	34,172	44,847
Total revenue, percent	9.00%	12.00%	14.00%
Total foreign revenue
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	304,019	245,084	273,519
Total revenue, percent	91.00%	88.00%	86.00%
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	148,018	113,585	123,124
Total revenue, percent	45.00%	41.00%	39.00%
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	47,459	48,202	66,319
Total revenue, percent	14.00%	17.00%	21.00%
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	26,538	35,696	36,961
Total revenue, percent	8.00%	13.00%	11.00%
Taiwan
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	6,708	8,276	8,346
Total revenue, percent	2.00%	3.00%	3.00%
Other Asia
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	64,425	32,254	32,687
Total revenue, percent	19.00%	11.00%	10.00%
Other Americas
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 10,871	$ 7,071	$ 6,082
Total revenue, percent	3.00%	3.00%	2.00%