Income Taxes (Details 6) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012
United States federal [Member]
Summary of tax credit carryforwards
Amount of tax credit carryforwards	$ 94,213	[1]
Other Tax Carryforward, Expiration Dates	from 2015 through 2032
California State [Member]
Summary of tax credit carryforwards
Amount of tax credit carryforwards	32,103
Other Tax Carryforward, Expiration Dates	do not expire until utilized
States other than California [Member]
Summary of tax credit carryforwards
Amount of tax credit carryforwards	9,699
Other Tax Carryforward, Expiration Dates	from 2013 through 2026
Foreign Jurisdiction [Member]
Summary of tax credit carryforwards
Amount of tax credit carryforwards	$ 8,340
Other Tax Carryforward, Expiration Dates	do not expire until utilized

[1] This amount includes foreign tax credits that have not been recognized for income tax purposes. We have not included an expiration period for foreign tax credits that have not been recognized for income tax purposes.