Income Taxes Income Taxes Unrecognized Tax Benefits (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 30, 2014	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits, Ending Balance		$ 25,715	$ 23,897	$ 28,848
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]		18,762
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits, Beginning Balance	23,897	23,897	28,848	30,614
Tax positions of prior years, additions		2,678	3,579	3,410
Tax positions of prior years, reductions		(582)	(4,914)	(2,964)
Settlements, reductions		0	(2,416)	(1,327)
Lapse of statute of limitations, reductions		(278)	(1,200)	(885)
Unrecognized Tax Benefits, Ending Balance		25,715	23,897	28,848
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	6,214
Unrecognized Tax Benefits, Period Increase (Decrease), due to Amended State Tax Returns		2,627
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound		5,836
Unrecognized Tax Benefits, Interest on Income Taxes Expense		315	(835)	(584)
Unrecognized Tax Benefits, Income Tax Penalties Expense		(330)	(672)	(204)
Unrecognized Tax Benefits, Interest on Income Taxes Accrued		2,949	2,634
Unrecognized Tax Benefits, Income Tax Penalties Accrued		$ 657	$ 987