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Nature of Operations and Summary of Significant Accounting Policies - Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 30, 2017 | Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | $ 178,783 | $ 101,743
Currency Translation | (1,655) | (8,073)
Accumulated Amortization | (60,997) | (49,040)
Net | 116,131 | 44,630
Acquired Intangible Assets |  |
Gross | 195,383 | 109,843
Currency Translation | (1,350) | (8,073)
Net | 133,036 | 52,730
Tradenames |  |
Acquired Indefinite-lived Intangible Assets [Line Items] |  |
Gross | 16,905 | 8,100
Currency Translation | 305 | 0
Net | 16,600 | 8,100
Customer relationships |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 113,301 | 59,101
Currency Translation | (621) | (5,202)
Accumulated Amortization | (28,789) | (21,805)
Net | 83,891 | 32,094
Product technology |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 46,501 | 27,101
Currency Translation | (737) | (2,052)
Accumulated Amortization | (19,841) | (17,105)
Net | 25,923 | 7,944
Tradenames |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 5,227 | 4,447
Currency Translation | (262) | (591)
Accumulated Amortization | (1,504) | (1,065)
Net | 3,461 | 2,791
Other |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross | 13,754 | 11,094
Currency Translation | (35) | (228)
Accumulated Amortization | (10,863) | (9,065)
Net | $ 2,856 | $ 1,801

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