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Goodwill and Intangible Assets - Schedule of intangible assets subject to amortization (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Apr. 03, 2021 | Mar. 28, 2020 | Dec. 31, 2020
Finite-lived Intangible Assets [Roll Forward] |  |  |
Intangible assets subject to amortization, beginning balance | $ 980,310 |  |
Intangible assets acquired during the period | 4,628 |  |
Currency translation during the period | (31,857) |  |
Intangible assets subject to amortization, ending balance | 953,081 |  |
Accumulated amortization, beginning balance | 755,971 |  |
Amortization during the period | 7,498 | $ 6,876 |
Currency translation during the period | (25,526) |  |
Accumulated amortization, ending balance | 737,943 |  |
Intangible assets subject to amortization, net as of April 3, 2021 | 215,138 |  | $ 224,339
Customer relationships |  |  |
Finite-lived Intangible Assets [Roll Forward] |  |  |
Intangible assets subject to amortization, beginning balance | 699,795 |  |
Intangible assets acquired during the period | 0 |  |
Currency translation during the period | (19,752) |  |
Intangible assets subject to amortization, ending balance | 680,043 |  |
Accumulated amortization, beginning balance | 481,256 |  |
Amortization during the period | 7,039 |  |
Currency translation during the period | (13,472) |  |
Accumulated amortization, ending balance | 474,823 |  |
Intangible assets subject to amortization, net as of April 3, 2021 | 205,220 |  |
Patents |  |  |
Finite-lived Intangible Assets [Roll Forward] |  |  |
Intangible assets subject to amortization, beginning balance | 273,570 |  |
Intangible assets acquired during the period | 4,628 |  |
Currency translation during the period | (12,096) |  |
Intangible assets subject to amortization, ending balance | 266,102 |  |
Accumulated amortization, beginning balance | 273,426 |  |
Amortization during the period | 123 |  |
Currency translation during the period | (12,031) |  |
Accumulated amortization, ending balance | 261,518 |  |
Intangible assets subject to amortization, net as of April 3, 2021 | 4,584 |  |
Other |  |  |
Finite-lived Intangible Assets [Roll Forward] |  |  |
Intangible assets subject to amortization, beginning balance | 6,945 |  |
Intangible assets acquired during the period | 0 |  |
Currency translation during the period | (9) |  |
Intangible assets subject to amortization, ending balance | 6,936 |  |
Accumulated amortization, beginning balance | 1,289 |  |
Amortization during the period | 336 |  |
Currency translation during the period | (23) |  |
Accumulated amortization, ending balance | 1,602 |  |
Intangible assets subject to amortization, net as of April 3, 2021 | $ 5,334 |  |

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- Definition Finite-Lived Intangible Assets, Accumulated Amortization, Translation Adjustments + References No definition available. + Details
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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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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 926 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959 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)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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