Stockholders' Equity - Reclassified from AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Amounts Reclassified from AOCI
Interest expense	$ (643)	$ (687)	$ (1,939)	$ (2,160)
Income before income taxes	21,362	10,442	44,704	26,040
Income tax benefit	(1,344)	(467)	(3,319)	(2,112)
Net income	20,018	9,975	41,385	23,928
Reclassifications From Accumulated Other Comprehensive Income
Amounts Reclassified from AOCI
Income before income taxes	(64)	(165)	(191)	(386)
Income tax benefit	22	58	67	135
Net income	(42)	(107)	(124)	(251)
Unrealized Gain (Loss) on Cash Flow Hedge | Reclassifications From Accumulated Other Comprehensive Income
Amounts Reclassified from AOCI
Interest expense	$ (64)	$ (165)	$ (191)	(376)
Net Unrealized Losses on Available-For-Sale Securities | Reclassifications From Accumulated Other Comprehensive Income
Amounts Reclassified from AOCI
Interest income				$ (10)