Stockholders' Equity - Amounts Reclassed from AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Amounts Reclassified from AOCI
Interest expense	$ (2,587)	$ (2,828)	$ (3,154)
Interest income	1,291	730	1,007
Income before income taxes	64,496	30,263	49,040
Income tax benefit	(3,002)	(677)	(11,019)
Net income	61,494	29,586	38,021
Net changes to available-for-sale securities:
Unrealized gains (losses) arising during the period	63	149	(387)
Reclassification for losses included in net income		(4)
Net changes to cash flow hedges:
Unrealized gains (losses) arising during the period	(513)	255	279
Reclassification for losses included in net income	(87)	(171)	(216)
Other comprehensive income	(537)	229	(324)
Reclassifications From Accumulated Other Comprehensive Loss
Amounts Reclassified from AOCI
Income before income taxes	(249)	(499)	(618)
Income tax benefit	87	175	216
Net income	(162)	(324)	(402)
Unrealized Gain on Cash Flow Hedge | Reclassifications From Accumulated Other Comprehensive Loss
Amounts Reclassified from AOCI
Interest expense	$ (249)	(489)	$ (618)
Net Unrealized Losses on Available-For-Sale Securities | Reclassifications From Accumulated Other Comprehensive Loss
Amounts Reclassified from AOCI
Interest income		$ (10)