Summary Of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 29, 2012 customer item		Dec. 31, 2011 customer item		Dec. 26, 2010
Summary Of Significant Accounting Policies [Line Items]
Number of months for inventory obsolescence	P12M
Asset impairment	$ 1,759,000	[1]	$ 3,589,000	[1]
Senior convertible notes, stated interest rate	2.25%		2.25%
Principal amount			68,300,000		68,300,000
Concentration risk, number of customer	2		2
Concentration risk, number of distributor	1		1
Research and development	220,927,000	[1]	227,106,000	[1]	187,467,000	[1]
Share-based Compensation	26,315,000	[1]	27,055,000	[1]	21,935,000	[1]
Share based compensation, per share	$ 0.12
Number of wafer foundries	3		3
Customer One [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage	17.00%		16.00%
Customer Two [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage	10.00%		11.00%
Distributor [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage	12.00%		21.00%
Supplier Concentration Risk [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage	95.00%		95.00%
Developed Technology Assets [Member]
Summary Of Significant Accounting Policies [Line Items]
Estimated average life	3 years		3 years
Certain Design Tools, Property And Equipment, Intellectual Property [Member]
Summary Of Significant Accounting Policies [Line Items]
Asset impairment	$ 1,800,000
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	5 years
Estimated average life	10 years
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life	2 years
Estimated average life	1 year

[1] As Restated