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Employee Benefits - Fair Value of Total Assets By Category (Details) - USD ($) $ in Thousands	Jan. 02, 2016	Jan. 03, 2015	Jan. 04, 2014
Asset allocation structure of the portfolio
Percentage of fair value of total assets by asset category	100.00%	100.00%
Fair value of plan assets by asset category	$ 78,264	$ 80,192	$ 77,039
Level 1
Asset allocation structure of the portfolio
Fair value of plan assets by asset category	$ 78,264	$ 80,192
Equity securities — domestic
Asset allocation structure of the portfolio
Percentage of fair value of total assets by asset category	59.00%	57.00%
Equity securities — domestic | Level 1
Asset allocation structure of the portfolio
Fair value of plan assets by asset category	$ 46,087	$ 45,950
Equity securities — international
Asset allocation structure of the portfolio
Percentage of fair value of total assets by asset category	14.00%	15.00%
Equity securities — international | Level 1
Asset allocation structure of the portfolio
Fair value of plan assets by asset category	$ 10,912	$ 11,924
Fixed income
Asset allocation structure of the portfolio
Percentage of fair value of total assets by asset category	24.00%	24.00%
Fixed income | Level 1
Asset allocation structure of the portfolio
Fair value of plan assets by asset category	$ 18,792	$ 19,161
Other
Asset allocation structure of the portfolio
Percentage of fair value of total assets by asset category	3.00%	4.00%
Other | Level 1
Asset allocation structure of the portfolio
Fair value of plan assets by asset category	$ 2,473	$ 3,157

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Section 35
-Paragraph 50
-URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(1)
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