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Summary of Significant Accounting Policies - Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 02, 2021 | Dec. 28, 2019 | Dec. 29, 2018
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross Carrying amount | $ 826,924 | $ 779,822 |
Finite-Lived Intangible Assets, Accumulated Amortization | (403,347) | (333,507) |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) | 11,600 |  |
Indefinite-Lived Intangible Assets, Carrying Value | 90,000 |  |
Finite-Lived Intangible Assets, Amortization Expense | 69,000 | $ 64,000 | $ 60,000
Commercial Foodservice Equipment Group |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) | 5,300 |  |
Food Processing Group |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) | 5,400 |  |
Residential Kitchen |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) | $ 900 |  |
Customer Lists |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Estimated Weighted Avg Remaining LIfe | 8 years 6 months | 9 years 2 months 12 days |
Gross Carrying amount | $ 735,264 | $ 717,397 |
Finite-Lived Intangible Assets, Accumulated Amortization | $ (347,029) | $ (283,846) |
Service Backlog |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Estimated Weighted Avg Remaining LIfe | 3 months 18 days | 1 year 3 months 18 days |
Gross Carrying amount | $ 34,729 | $ 29,426 |
Finite-Lived Intangible Assets, Accumulated Amortization | $ (31,924) | $ (28,283) |
Developed Technology Rights |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Estimated Weighted Avg Remaining LIfe | 10 years | 5 years 2 months 12 days |
Gross Carrying amount | $ 56,931 | $ 32,999 |
Finite-Lived Intangible Assets, Accumulated Amortization | (24,394) | (21,378) |
Tradenames And Trademarks |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross carrying amount | $ 1,026,804 | $ 997,066 |
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount | 20.00% |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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