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Nature of Operations and Summary of Significant Accounting Policies - Additional Information (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 28, 2019 USD ($) | Dec. 28, 2019 USD ($) Segment | Dec. 29, 2018 USD ($) | Dec. 30, 2017 USD ($) | Dec. 30, 2018
Nature of Operations [Line Items] |  |  |  |  |
Number of reportable segments | Segment |  | 3 |  |  |
Revenue recognized from contract liabilities |  | $ 29,220,000 | $ 36,556,000 |  |
Revenue, remaining performance obligation, amount | $ 13,176,000 | 13,176,000 |  |  |
Percentage of completion revenue |  |  |  | $ 27,676,000 |
Customer deposits | 24,012,000 | 24,012,000 | 26,987,000 |  |
Due from bankers acceptances drafts | 5,230,000 | $ 5,230,000 | 7,976,000 |  |
Weighted average useful life of acquired intangible assets |  | 12 years |  |  |
Amortization expense of acquired intangible assets |  | $ 20,154,000 | 14,182,000 | 11,957,000 |
Acquisition transaction costs |  | 843,000 | 1,321,000 | $ 5,375,000 |
Estimated Future Amortization Expense [Abstract] |  |  |  |  |
2020 | 18,714,000 | 18,714,000 |  |  |
2021 | 17,875,000 | 17,875,000 |  |  |
2022 | 16,797,000 | 16,797,000 |  |  |
2023 | 15,164,000 | 15,164,000 |  |  |
2024 | 14,272,000 | 14,272,000 |  |  |
Thereafter | 67,060,000 | 67,060,000 |  |  |
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |  |  |
Goodwill, impairment loss |  | 0 | 0 |  |
Impairment of intangible assets, indefinite-lived (excluding goodwill) | 2,336,000 | 0 | 0 |  |
Finite-lived intangible assets | $ 149,882,000 | $ 149,882,000 | 96,862,000 |  |
Joint Venture with an Italian Company |  |  |  |  |
Nature of Operations [Line Items] |  |  |  |  |
Remaining ownership interest with an option to purchase | 50.00% | 50.00% |  |  |
Italian Company | Joint Venture with an Italian Company |  |  |  |  |
Nature of Operations [Line Items] |  |  |  |  |
Ownership interest | 50.00% | 50.00% |  |  |
Assets | Accounting Standards Update 2016-02 |  |  |  |  |
Recent Accounting Pronouncements [Abstract] |  |  |  |  |
Cumulative effect of new accounting principle in period of adoption, percent |  |  |  |  | 2.30%
Liabilities | Accounting Standards Update 2016-02 |  |  |  |  |
Recent Accounting Pronouncements [Abstract] |  |  |  |  |
Cumulative effect of new accounting principle in period of adoption, percent |  |  |  |  | 4.80%
Tradenames |  |  |  |  |
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |  |  |
Indefinite-lived intangible assets | $ 24,014,000 | $ 24,014,000 | 16,485,000 |  |
Madill | Tradenames |  |  |  |  |
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |  |  |
Indefinite-lived intangible assets | 1,300,000 | 1,300,000 |  |  |
Product technology |  |  |  |  |
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |  |  |
Finite-lived intangible assets | 26,483,000 | 26,483,000 | 21,261,000 |  |
Tradenames |  |  |  |  |
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |  |  |
Finite-lived intangible assets | 3,679,000 | 3,679,000 | $ 2,857,000 |  |
Wood Processing Systems |  |  |  |  |
Nature of Operations [Line Items] |  |  |  |  |
Impairment of intangible assets, finite-lived | 2,336,000 |  |  |  |
Wood Processing Systems | Tradenames |  |  |  |  |
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |  |  |
Indefinite-lived intangible assets | 700,000 | 700,000 |  |  |
Wood Processing Systems | Product technology |  |  |  |  |
Nature of Operations [Line Items] |  |  |  |  |
Impairment of intangible assets, finite-lived | 1,636,000 |  |  |  |
Scenario, Adjustment | Madill | Tradenames |  |  |  |  |
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |  |  |
Indefinite-lived intangible assets | (1,300,000) | (1,300,000) |  |  |
Scenario, Adjustment | Tradenames | Madill |  |  |  |  |
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |  |  |
Finite-lived intangible assets | $ 1,300,000 | $ 1,300,000 |  |  |

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- Definition The percentage of completion is determined by comparing the actual costs incurred to date to an estimate of total costs to be incurred on each contract. If a loss is indicated on any contract in process, a provision is made currently for the entire loss. The Company's contracts generally provide for billing of customers upon the attainment of certain milestones specified in each contract. + References No definition available. + Details
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