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Employee Benefits - Fair Value of Total Assets By Category (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Jan. 02, 2016 | Jan. 03, 2015
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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 | $ 79,087 | $ 78,264 | $ 80,192
Level 1 |  |  |
Asset allocation structure of the portfolio |  |  |
Fair value of plan assets by asset category | $ 79,087 | $ 78,264 |
Equity securities — domestic |  |  |
Asset allocation structure of the portfolio |  |  |
Percentage of fair value of total assets by asset category | 49.00% | 59.00% |
Equity securities — domestic | Level 1 |  |  |
Asset allocation structure of the portfolio |  |  |
Fair value of plan assets by asset category | $ 38,417 | $ 46,087 |
Equity securities — international |  |  |
Asset allocation structure of the portfolio |  |  |
Percentage of fair value of total assets by asset category | 12.00% | 14.00% |
Equity securities — international | Level 1 |  |  |
Asset allocation structure of the portfolio |  |  |
Fair value of plan assets by asset category | $ 9,717 | $ 10,912 |
Fixed income |  |  |
Asset allocation structure of the portfolio |  |  |
Percentage of fair value of total assets by asset category | 38.00% | 24.00% |
Fixed income | Level 1 |  |  |
Asset allocation structure of the portfolio |  |  |
Fair value of plan assets by asset category | $ 30,493 | $ 18,792 |
Other |  |  |
Asset allocation structure of the portfolio |  |  |
Percentage of fair value of total assets by asset category | 1.00% | 3.00% |
Other | Level 1 |  |  |
Asset allocation structure of the portfolio |  |  |
Fair value of plan assets by asset category | $ 460 | $ 2,473 |

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- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees. + 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=64937038&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=65897934&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Assets -URI http://asc.fasb.org/extlink&oid=6749337 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Assets -URI http://asc.fasb.org/extlink&oid=6520858 + Details
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