Facilities Action Charges, Net Facilities Relocation (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		19 Months Ended
	Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013	Jul. 01, 2012	Jun. 30, 2013
Facilities Relocation and Other Transition Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 1,154	$ 8,767	$ 3,324	$ 13,657
Facilities relocation costs and other transactions since inception					35,452
Facilities relocation costs and other transactions, Incurred cost, Net of accelerated depreciation expense and share-based compensation expense	1,154	9,426	3,324	14,957
Restructuring and Related Costs Incurred To Date Net of Accelerated Depreciation Expense and Share-Based Compensation Expense					37,841
Facilities Relocation and Other Transition Costs [Member] | Severance, Retention and Other Payroll Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	424	4,317	1,366	7,316
Facilities relocation costs and other transactions since inception					16,663
Facilities Relocation and Other Transition Costs [Member] | Relocation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	444	1,505	1,261	2,081
Facilities relocation costs and other transactions since inception					6,483
Facilities Relocation and Other Transition Costs [Member] | Atlanta Facility Closure Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	177	133	395	177
Facilities relocation costs and other transactions since inception					4,936
Facilities Relocation and Other Transition Costs [Member] | Consulting and Professional Fees [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	21	1,933	128	2,818
Facilities relocation costs and other transactions since inception					5,056
Facilities Relocation and Other Transition Costs [Member] | Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	88	879	174	1,265
Facilities relocation costs and other transactions since inception					2,314
Facilities Relocation and Other Transition Costs [Member] | Accelerated Depreciation Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	0	659	0	1,300
Facilities relocation costs and other transactions since inception					2,118
Facilities Relocation and Other Transition Costs [Member] | Share Based Compensation Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	0	0	0	0
Facilities relocation costs and other transactions since inception					271
Fiscal Year 2013 [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost			1,400
Fiscal Year 2013 [Member] | Facilities Relocation and Other Transition Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	36,882
Restructuring And Related Cost, Expected Cost, Net of Accelerated Depreciation Expense and Share-Based Compensation Expense	39,271
Fiscal Year 2013 [Member] | Facilities Relocation and Other Transition Costs [Member] | Severance, Retention and Other Payroll Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	17,140
Fiscal Year 2013 [Member] | Facilities Relocation and Other Transition Costs [Member] | Relocation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	7,405
Fiscal Year 2013 [Member] | Facilities Relocation and Other Transition Costs [Member] | Atlanta Facility Closure Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	4,936
Fiscal Year 2013 [Member] | Facilities Relocation and Other Transition Costs [Member] | Consulting and Professional Fees [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	5,056
Fiscal Year 2013 [Member] | Facilities Relocation and Other Transition Costs [Member] | Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	2,345
Fiscal Year 2013 [Member] | Facilities Relocation and Other Transition Costs [Member] | Accelerated Depreciation Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	2,118
Fiscal Year 2013 [Member] | Facilities Relocation and Other Transition Costs [Member] | Share Based Compensation Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 271