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Net Sales Summary (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Oct. 01, 2016 | Sep. 30, 2017 | Oct. 01, 2016
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Net sales | [1] | $ 593,043 |  | $ 574,224 |  | $ 1,702,683 | $ 1,671,035
Percent |  | 100.00% |  | 100.00% |  | 100.00% | 100.00%
Commercial Foodservice Equipment Group [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Net sales |  | $ 354,828 | [1] | $ 331,571 | [1] | $ 1,000,830 | $ 931,585
Percent |  | 59.80% |  | 57.70% |  | 58.80% | 55.80%
Food Processing Group [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Net sales |  | $ 86,871 | [1] | $ 82,196 | [1] | $ 256,515 | $ 244,307
Percent |  | 14.70% |  | 14.30% |  | 15.10% | 14.60%
Residential Kitchen [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Net sales |  | $ 151,344 | [1] | $ 160,457 | [1] | $ 445,338 | $ 495,143
Percent |  | 25.50% |  | 28.00% |  | 26.10% | 29.60%
[1] | Non-operating expenses are not allocated to the operating segments. Non-operating expenses consist of interest expense and deferred financing amortization, foreign exchange gains and losses and other income and expense items outside of income from operations.

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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