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Goodwill and Intangible Assets (Tables) | 9 Months Ended
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Oct. 01, 2021
Goodwill And Intangible Assets Disclosure [Abstract] |
Summary of Changes in Goodwill | The following table summarizes changes in goodwill during the nine months ended October 1, 2021 (in thousands):
Balance at beginning of the period | $ | 285,980 |
Goodwill acquired from acquisitions |  | 213,915 |
Effect of foreign exchange rate changes |  | (6,955 | )
Balance at end of the period | $ | 492,940 |
Goodwill by Reportable Segment | Goodwill by reportable segment as of October 1, 2021 was as follows (in thousands):
| Reportable Segment |  |  |  |  |
| Photonics |  |  | Vision |  |  | Precision Motion |  |  | Total |
Goodwill | $ | 215,453 |  |  | $ | 161,885 |  |  | $ | 266,831 |  |  | $ | 644,169 |
Accumulated impairment of goodwill |  | (102,461 | ) |  |  | (31,722 | ) |  |  | (17,046 | ) |  |  | (151,229 | )
Total | $ | 112,992 |  |  | $ | 130,163 |  |  | $ | 249,785 |  |  | $ | 492,940 |
Goodwill by reportable segment as of December 31, 2020 was as follows (in thousands):
| Reportable Segment |  |  |  |  |
| Photonics |  |  | Vision |  |  | Precision Motion |  |  | Total |
Goodwill | $ | 218,517 |  |  | $ | 165,195 |  |  | $ | 53,497 |  |  | $ | 437,209 |
Accumulated impairment of goodwill |  | (102,461 | ) |  |  | (31,722 | ) |  |  | (17,046 | ) |  |  | (151,229 | )
Total | $ | 116,056 |  |  | $ | 133,473 |  |  | $ | 36,451 |  |  | $ | 285,980 |
Intangible Assets | Intangible assets as of October 1, 2021 and December 31, 2020, respectively, are summarized as follows (in thousands):
| October 1, 2021 |  |  | December 31, 2020 |
| Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |
Amortizable intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patents and developed technologies | $ | 190,485 |  |  | $ | (118,535 | ) |  | $ | 71,950 |  |  | $ | 164,430 |  |  | $ | (110,572 | ) |  | $ | 53,858 |
Customer relationships |  | 229,369 |  |  |  | (101,546 | ) |  |  | 127,823 |  |  |  | 167,429 |  |  |  | (92,892 | ) |  |  | 74,537 |
Customer backlog |  | 6,753 |  |  |  | (563 | ) |  |  | 6,190 |  |  |  | — |  |  |  | — |  |  |  | — |
Trademarks and trade names |  | 24,052 |  |  |  | (12,015 | ) |  |  | 12,037 |  |  |  | 18,367 |  |  |  | (11,268 | ) |  |  | 7,099 |
Amortizable intangible assets |  | 450,659 |  |  |  | (232,659 | ) |  |  | 218,000 |  |  |  | 350,226 |  |  |  | (214,732 | ) |  |  | 135,494 |
Non-amortizable intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade names |  | 13,027 |  |  |  | — |  |  |  | 13,027 |  |  |  | 13,027 |  |  |  | — |  |  |  | 13,027 |
Totals | $ | 463,686 |  |  | $ | (232,659 | ) |  | $ | 231,027 |  |  | $ | 363,253 |  |  | $ | (214,732 | ) |  | $ | 148,521 |
Amortization Expense of Intangible Assets | Amortizat ion expense was as follows (in thousands):
| Three Months Ended |  |  | Nine Months Ended |
| October 1, |  |  | October 2, |  |  | October 1, |  |  | October 2, |
| 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Amortization expense – cost of revenue | $ | 3,316 |  |  | $ | 2,820 |  |  | $ | 9,275 |  |  | $ | 8,270 |
Amortization expense – operating expenses |  | 4,139 |  |  |  | 3,533 |  |  |  | 11,300 |  |  |  | 10,388 |
Total amortization expense | $ | 7,455 |  |  | $ | 6,353 |  |  | $ | 20,575 |  |  | $ | 18,658 |
Estimated Amortization Expense | Estimated amortization expense for each of the five succeeding years and thereafter as of October 1, 2021 was as follows (in thousands):
Year Ending December 31, |  | Cost of Revenue |  |  | Operating Expenses |  |  | Total |
2021 (remainder of year) |  | $ | 4,029 |  |  | $ | 5,294 |  |  | $ | 9,323 |
2022 |  |  | 13,854 |  |  |  | 27,032 |  |  |  | 40,886 |
2023 |  |  | 12,544 |  |  |  | 20,998 |  |  |  | 33,542 |
2024 |  |  | 10,170 |  |  |  | 17,631 |  |  |  | 27,801 |
2025 |  |  | 8,579 |  |  |  | 14,917 |  |  |  | 23,496 |
Thereafter |  |  | 22,774 |  |  |  | 60,178 |  |  |  | 82,952 |
Total |  | $ | 71,950 |  |  | $ | 146,050 |  |  | $ | 218,000 |

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