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Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Apr. 18, 2018 | Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
Goodwill |  |  |  |
Goodwill, Beginning Balance |  | $ 288,227 | $ 276,130 |
Additions due to business combinations |  | 109,117 | 12,097 |
Goodwill, Ending Balance |  | $ 397,344 | $ 288,227 | $ 276,130
Other Intangible Assets |  |  |  |
Weighted-Average Amortization Period (Years) |  | 8 years | 8 years |
Intangible assets subject to amortization, Gross Amount |  | $ 296,465 | $ 193,860 |
Intangible assets subject to amortization, Accumulated Amortization |  | (125,633) | (110,716) |
Amortization expense related to intangible assets |  | 38,000 | $ 27,100 | $ 27,300
Estimated aggregate amortization expense for intangible assets subject to amortization for each of the five succeeding fiscal years |  |  |  |
2019 |  | 39,222 |  |
2020 |  | 36,727 |  |
2021 |  | 32,337 |  |
2022 |  | 24,206 |  |
2023 |  | $ 18,286 |  |
Core and developed technology |  |  |  |
Other Intangible Assets |  |  |  |
Weighted-Average Amortization Period (Years) |  | 8 years | 8 years |
Intangible assets subject to amortization, Gross Amount |  | $ 237,265 | $ 161,700 |
Intangible assets subject to amortization, Accumulated Amortization |  | $ (102,116) | $ (89,442) |
Customer relationships |  |  |  |
Other Intangible Assets |  |  |  |
Weighted-Average Amortization Period (Years) |  | 5 years | 5 years |
Intangible assets subject to amortization, Gross Amount |  | $ 46,890 | $ 25,470 |
Intangible assets subject to amortization, Accumulated Amortization |  | $ (21,075) | (16,180) |
Patents |  |  |  |
Other Intangible Assets |  |  |  |
Intangible assets subject to amortization, Gross Amount |  |  | 3,000 |
Intangible assets subject to amortization, Accumulated Amortization |  |  | $ (2,750) |
Trademarks |  |  |  |
Other Intangible Assets |  |  |  |
Weighted-Average Amortization Period (Years) |  | 7 years | 7 years |
Intangible assets subject to amortization, Gross Amount |  | $ 12,310 | $ 3,690 |
Intangible assets subject to amortization, Accumulated Amortization |  | (2,442) | $ (2,344) |
Z-Wave |  |  |  |
Goodwill |  |  |  |
Goodwill, Ending Balance | $ 109,117 |  |  |
Other Intangible Assets |  |  |  |
Gross intangible assets acquired |  | 125,700 |  |
Removal of fully amortized intangible assets |  | $ 23,100 |  |
Z-Wave | Customer relationships |  |  |  |
Other Intangible Assets |  |  |  |
Weighted-Average Amortization Period (Years) | 4 years |  |  |
Z-Wave | Trademarks |  |  |  |
Other Intangible Assets |  |  |  |
Weighted-Average Amortization Period (Years) | 7 years |  |  |

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