Long-Term Debt Long Term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 30, 2017
Long-term Debt	$ 1,004,292	$ 989,674
Capital Lease Obligations	393	435
Debt, Long-term and Short-term, Combined Amount	1,003,472	989,389
Long-term Debt, Current Maturities	(5,696)	(5,706)
Long-term Debt [Member]
Debt Issuance Costs, Net	(11,947)	(12,780)
6.375% Senior Notes [Member]
Principal amount of senior notes	330,000	330,000
Junior Subordinated Debentures - Preferred [Domain]
Trust Preferred Security At Face Value	105,443	105,443
Trust Preferred Securities - Common [Domain]
Trust Preferred Security At Face Value	3,261	3,261
Revolving Credit Facility [Member]
Line of Credit Facility, Remaining Borrowing Capacity	27,564
Long-term Line of Credit	35,000	19,500
Term Loan [Member]
Long-term Debt	529,375	530,750
Junior Subordinated Debentures - Preferred [Domain]
Debt Instrument, Unamortized Premium	$ 18,463	$ 18,771