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Income Taxes - Additional Information (Detail) - USD ($) | 12 Months Ended
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Dec. 29, 2025 | Dec. 30, 2024 | Jan. 01, 2024 | Dec. 28, 2015
Income Taxes [Line Items] |  |  |  |
Deferred tax liability, undistributed earnings of foreign subsidiaries |  | $ 0 |  |
Unrecognized deferred tax liability related to undistributed earnings | $ 2,687,000 |  |  |
Deferred tax liability | 43,768,000 | 40,419,000 |  |
Tax credit carryforward, total | 41,153,000 |  |  |
Tax credit carryforwards not subject to expiration | $ 4,883,000 |  |  |
Incentive based special tax rate | 0.00% |  |  |
U.S. federal statutory income tax, Rate | 21.00% |  |  |
Additions for tax positions of prior years | $ 977,000 | 0 | $ 13,000 |
Unrecognized tax expense including income tax penalties and interest accrued | 1,261,000 | 446,000 |  |
Unrecognized tax expense, income tax penalties and interest accrued | 63,000 | 475,000 |  |
Reduction in deferred tax assets | 11,143,000 | 10,193,000 |  |
Domestic state income taxes | 37,437,000 | $ 18,766,000 | $ 53,751,000 |
Research and Development Tax Credit Member |  |  |  |
Income Taxes [Line Items] |  |  |  |
Additions for tax positions of prior years | 1,765,000 |  |  |
TTM Viasystems Group Inc |  |  |  |
Income Taxes [Line Items] |  |  |  |
Net operating loss carryforwards |  |  |  | $ 68,667,000
Utilization of the U.S. net operating losses |  |  |  | $ 9,826,000
TTM Viasystems Group Inc | Minimum |  |  |  |
Income Taxes [Line Items] |  |  |  |
Percentage of change in ownership |  |  |  | 50.00%
UNITED STATES |  |  |  |
Income Taxes [Line Items] |  |  |  |
Net operating loss carryforwards | $ 68,667,000 |  |  |
UNITED STATES | Earliest Tax Year |  |  |  |
Income Taxes [Line Items] |  |  |  |
Expiration year, operating loss carryforwards | 2029 |  |  |
UNITED STATES | Latest Tax Year |  |  |  |
Income Taxes [Line Items] |  |  |  |
Expiration year, operating loss carryforwards | 2032 |  |  |
Various U.S. States |  |  |  |
Income Taxes [Line Items] |  |  |  |
Net operating loss carryforwards | $ 19,054,000 |  |  |
Various U.S. States | Earliest Tax Year |  |  |  |
Income Taxes [Line Items] |  |  |  |
Expiration year, operating loss carryforwards | 2026 |  |  |
Various U.S. States | Latest Tax Year |  |  |  |
Income Taxes [Line Items] |  |  |  |
Expiration year, operating loss carryforwards | 2045 |  |  |
CHINA |  |  |  |
Income Taxes [Line Items] |  |  |  |
Net operating loss carryforwards | $ 8,805,000 |  |  |
CHINA | Earliest Tax Year |  |  |  |
Income Taxes [Line Items] |  |  |  |
Expiration year, operating loss carryforwards | 2031 |  |  |
CHINA | Latest Tax Year |  |  |  |
Income Taxes [Line Items] |  |  |  |
Expiration year, operating loss carryforwards | 2035 |  |  |
HONG KONG |  |  |  |
Income Taxes [Line Items] |  |  |  |
Net operating loss carryforwards | $ 22,796,000 |  |  |
MALAYSIA |  |  |  |
Income Taxes [Line Items] |  |  |  |
Net operating loss carryforwards | $ 33,156,000 |  |  |
Tax rate | 24.00% |  |  |
Foreign |  |  |  |
Income Taxes [Line Items] |  |  |  |
Deferred tax liability, undistributed earnings of foreign subsidiaries | $ 4,682,000 |  |  |
Undistributed earnings of foreign subsidiaries | $ 60,769,000 |  |  |
Tax year remain subject to examination | 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 |  |  |
State and Local |  |  |  |
Income Taxes [Line Items] |  |  |  |
Deferred tax liability, undistributed earnings of foreign subsidiaries | $ 1,514,000 |  |  |
Tax year remain subject to examination | 2020 2021 2022 2023 2024 2025 |  |  |
State and Local | Maryland |  |  |  |
Income Taxes [Line Items] |  |  |  |
Domestic state income taxes | $ 1,332,000 |  |  |
State and Local | Massachusetts |  |  |  |
Income Taxes [Line Items] |  |  |  |
Domestic state income taxes | $ 497,000 |  |  |
U.S. Federal |  |  |  |
Income Taxes [Line Items] |  |  |  |
Tax year remain subject to examination | 2022 2023 2024 2025 |  |  |

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