Stockholders' Equity - Amounts Reclassed from AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Amounts Reclassified from AOCI
Interest expense	$ (2,828)	$ (3,154)	$ (3,293)
Interest income	730	1,007	853
Income before income taxes	30,263	49,040	62,027
Income tax benefit	(677)	(11,019)	(12,208)
Net income	29,586	38,021	49,819
Net changes to available-for-sale securities:
Unrealized gains (losses) arising during the period	149	(387)	187
Reclassification for gains (losses) included in net income	(4)		81
Net changes to cash flow hedges
Unrealized gains (losses) arising during the period	255	279	(214)
Reclassification for losses included in net income	(171)	(216)	(196)
Other comprehensive income	229	(324)	(142)
Reclassifications From Accumulated Other Comprehensive Loss
Amounts Reclassified from AOCI
Income before income taxes	(499)	(618)	(328)
Income tax benefit	175	216	115
Net income	(324)	(402)	(213)
Unrealized Gain on Cash Flow Hedge \| Reclassifications From Accumulated Other Comprehensive Loss
Amounts Reclassified from AOCI
Interest expense	(489)	$ (618)	(560)
Net Unrealized Losses on Available-For-Sale Securities \| Reclassifications From Accumulated Other Comprehensive Loss
Amounts Reclassified from AOCI
Interest income	$ (10)		$ 232

Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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