Debt - Summary of Interest Rate Swaps Activity Recorded in Other Comprehensive Income Before Tax (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 29, 2015
Interest rate swap activity recorded in Other comprehensive earnings before tax
Amount expected to be reclassified in the next twelve months		$ 450
Unrealized gain (loss)	(54)
Interest Expense
Interest rate swap activity recorded in Other comprehensive earnings before tax
Realized loss reclassified to interest expense	118
Interest Rate Swap | Designated | Cash Flow Hedge
Interest rate swap activity recorded in Other comprehensive earnings before tax
Unrealized gain (loss)		(327)
Interest Rate Swap | Designated | Cash Flow Hedge | Interest Expense
Interest rate swap activity recorded in Other comprehensive earnings before tax
Realized loss reclassified to interest expense		$ 190