Debt - Effect of Derivatives on Financial Statements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2021	Dec. 27, 2020	Dec. 29, 2019
Debt and Credit Arrangements
Total interest expense on Consolidated Statements of Operations	$ (19,205)	$ (17,022)	$ (20,593)
Interest paid, including payments made or received under the swaps	13,400	15,800	18,100
Interest rate swap
Debt and Credit Arrangements
Portion of derivative liability that would be reclassified into earnings	5,500
Interest expense | Interest rate swap
Debt and Credit Arrangements
Amount of Gain or (Loss) Recognized in AOCI/AOCL on Derivative	5,273	(5,788)	(8,303)
Amount of Gain or (Loss) Reclassified from AOCI/AOCL into Income	(5,965)	(5,068)	660
Total interest expense on Consolidated Statements of Operations	(19,205)	(17,022)	(20,593)
Portion of derivative liability that would be reclassified into earnings	$ 4,800
Estimate of period of time over which portion of derivative liability would be reclassified into earnings	12 months
Interest expense | Interest rate swap | Amount reclassified from AOCI
Debt and Credit Arrangements
Amount of Gain or (Loss) Reclassified from AOCI/AOCL into Income	$ (5,965)
Interest expense | Interest rate swap | Qualifying as hedges | Amount reclassified from AOCI
Debt and Credit Arrangements
Amount of Gain or (Loss) Reclassified from AOCI/AOCL into Income		$ (5,068)	$ 660