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Nature of Operations and Summary of Significant Accounting Policies - Intangible Assets By Major Asset Class (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 30, 2019 | Dec. 29, 2018
Acquired Definite-Lived Intangible Assets [Line Items] |  |
Gross | $ 246,195 | $ 178,755
Accumulated Amortization | (80,512) | (75,179)
Currency Translation | (7,254) | (6,714)
Net | 158,429 | 96,862
Acquired Intangible Assets [Abstract] |  |
Gross | 272,495 | 195,355
Currency Translation | (7,387) | (6,829)
Net | 184,596 | 113,347
Tradenames |  |
Acquired Indefinite-Lived Intangible Assets [Line Items] |  |
Gross | 26,300 | 16,600
Currency Translation | (133) | (115)
Net | 26,167 | 16,485
Customer relationships |  |
Acquired Definite-Lived Intangible Assets [Line Items] |  |
Gross | 166,183 | 113,283
Accumulated Amortization | (41,222) | (38,160)
Currency Translation | (4,498) | (4,520)
Net | 120,463 | 70,603
Product technology |  |
Acquired Definite-Lived Intangible Assets [Line Items] |  |
Gross | 57,001 | 46,501
Accumulated Amortization | (24,619) | (23,563)
Currency Translation | (1,761) | (1,677)
Net | 30,621 | 21,261
Tradenames |  |
Acquired Definite-Lived Intangible Assets [Line Items] |  |
Gross | 5,227 | 5,227
Accumulated Amortization | (2,090) | (1,980)
Currency Translation | (419) | (390)
Net | 2,718 | 2,857
Other |  |
Acquired Definite-Lived Intangible Assets [Line Items] |  |
Gross | 17,784 | 13,744
Accumulated Amortization | (12,581) | (11,476)
Currency Translation | (576) | (127)
Net | $ 4,627 | $ 2,141

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