Income Taxes (Discussion of Unrecognized Tax Benefits) (Details) (USD $)	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Income Tax Contingency [Line Items]
Unrecognized tax benefits associated with uncertain tax positions	$ 21,680,000	$ 21,552,000	$ 7,741,000
Unrecognized tax benefits associated with uncertain tax positions that, if recognized, would affect the effective tax rate	20,500,000
Interest and penalties associated with unrecognized tax benefits	400,000
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	21,552,000	7,741,000	6,969,000
Additions based on tax positions related to the current year	384,000	15,005,000	786,000
Additions based on tax positions of prior years	192,000	0	60,000
Additions for acquisition of SiliconBlue		298,000
Reduction for tax positions of prior years	(26,000)	(106,000)	0
Settlements	(30,000)	(1,248,000)	0
Reduction as a result of lapse of applicable statute of limitations	(392,000)	(138,000)	(74,000)
Ending balance	21,680,000	21,552,000	7,741,000
Expiration of statutes of limitations | Foreign tax filings
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Amount of unrecognized tax benefits that could significantly change during the next twelve months	400,000
Expiration of statutes of limitations | Foreign tax filings | Maximum
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Amount of associated interest and penalties that could significantlly change within the next twelve months	$ 200,000