Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Beginning balance	$ 743,154	$ 654,600
Ending balance	762,580	705,698
Cash Flow Hedges
Accumulated Other Comprehensive Loss, Net of Tax [Roll Forward]
Beginning balance	(2,810)	(9,868)
Other comprehensive income (loss) before reclassification	(2,188)	4,093
Tax effect of other comprehensive income (loss) before reclassification	561	(1,048)
Amount reclassified from AOCL into interest expense	915	2,123
Tax effect of amount reclassified from AOCL into interest expense	(235)	(544)
Net current period other comprehensive income (loss), net of tax	(947)	4,624
Ending balance	$ (3,757)	$ (5,244)