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Employee Benefit Plans (Details) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 31, 2005 | Jan. 02, 2021 USD ($) plan | Dec. 28, 2019 USD ($) | Dec. 29, 2018 USD ($)
Fair Value Measurement [Domain] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | $ 155,702 |  |
Fair value of plan assets at end of period |  |  | 178,978 | $ 155,702 |
Fair Value Measurement [Domain] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 104,189 |  |
Fair value of plan assets at end of period |  |  | 114,143 | 104,189 |
Fair Value Measurement [Domain] | Significant Other Observable Inputs (Level 2) [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 5,792 |  |
Fair value of plan assets at end of period |  |  | 11,088 | 5,792 |
Fair Value Measurement [Domain] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 4,474 |  |
Fair value of plan assets at end of period |  |  | 3,249 | 4,474 |
Projected benefit obligation at beginning of period |  |  | 212,265 | 190,666 |
Service cost |  |  | 3,060 | 2,696 | $ 3,064
Interest cost |  |  | 5,721 | 6,828 | 6,443
Employee contributions |  |  | 360 | 368 |
Plan combinations |  |  | 5,362 | 0 |
Employee contributions |  |  | 360 | 368 |
Actuarial loss |  |  | 16,427 | 20,927 |
Benefits paid |  |  | (8,274) | (8,120) |
Effect of curtailment |  |  | (747) | (43) |
Effect of settlement |  |  | (2,208) | (903) |
Other |  |  | 4,011 | (154) |
Projected benefit obligation at end of period |  |  | 235,977 | 212,265 | 190,666
Fair value of plan assets at beginning of period |  |  | 155,702 | 133,861 |
Actual return on plan assets |  |  | 16,029 | 26,014 |
Employer contributions |  |  | 11,460 | 4,343 |
Plan combinations |  |  | 4,537 | 0 |
Benefits paid |  |  | (8,274) | (8,120) |
Effect of settlement |  |  | (2,208) | (903) |
Other |  |  | 1,372 | 139 |
Fair value of plan assets at end of period |  |  | 178,978 | 155,702 | 133,861
Funded status |  |  | (56,999) | (56,563) |
Amounts recognized in the consolidated balance sheets consist of: |  |  |  |  |
Current liability |  |  | (1,242) | (1,072) |
Noncurrent liability |  |  | (55,757) | (55,491) |
Net amount recognized |  |  | (56,999) | (56,563) |
Amounts recognized in accumulated other comprehensive loss consist of: |  |  |  |  |
Net actuarial loss |  |  | 51,145 | 45,062 |
Prior service cost |  |  | 194 | 295 |
Net amount recognized | [1] |  | 51,339 | 45,357 |
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax |  |  | 13,000 | 11,400 |
Accumulated benefit obligation |  |  | 221,238 | 201,708 |
Net pension cost includes the following components: |  |  |  |  |
Service cost |  |  | 3,060 | 2,696 | 3,064
Interest cost |  |  | 5,721 | 6,828 | 6,443
Expected return on plan assets |  |  | (8,161) | (7,270) | (8,226)
Net amortization and deferral |  |  | 3,438 | 4,605 | 3,578
Curtailment |  |  | (678) | (33) | (263)
Settlement |  |  | (22) | 66 | 47
Net pension cost |  |  | $ 3,358 | $ 6,892 | $ 4,643
Weighted average assumptions used to determine benefit obligations: |  |  |  |  |
Discount rate |  |  | 2.10% | 2.77% | 3.68%
Rate of compensation increase |  |  | 0.45% | 0.40% | 0.42%
Weighted average assumptions used to determine net periodic benefit cost for the employee benefit pension plans: |  |  |  |  |
Discount rate |  |  | 2.13% | 3.33% | 2.30%
Rate of increase in future compensation levels |  |  | 0.41% | 0.42% | 0.36%
Expected long-term rate of return on assets |  |  | 5.92% | 6.13% | 6.13%
Defined Benefit Plan, Expected Future Benefit Payment [Abstract] |  |  |  |  |
2021 |  |  | $ 11,947 |  |
2022 |  |  | 10,528 |  |
2023 |  |  | 10,953 |  |
2024 |  |  | 12,035 |  |
2025 |  |  | 12,938 |  |
Years 2026 – 2030 |  |  | 66,317 |  |
Multiemployer Plans [Abstract] |  |  |  |  |
Contributions |  |  | $ 3,229 | $ 3,626 | $ 3,547
Number Of Multiemployer Plans, Withdrawal Obligation | plan |  |  | 5 |  |
Multiemployer Plans, Withdrawal Obligation |  |  | $ 2,700 |  |
Investment Horizon of Greater Than |  |  | ten years |  |
Multiemployer Plans, Withdrawal Obligation, Settlement |  |  | $ 2,500 |  |
Foreign Plan [Member] |  |  |  |  |
Weighted average assumptions used to determine net periodic benefit cost for the employee benefit pension plans: |  |  |  |  |
Expected long-term rate of return on assets |  |  | 1.80% |  |
Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | $ 4,474 | 3,337 |
Fair value of plan assets at end of period |  |  | 3,249 | 4,474 | 3,337
Western Conference Of Teamsters Pension Plan [Member] |  |  |  |  |
Multiemployer Plans [Abstract] |  |  |  |  |
Contributions | [2] |  | 1,429 | 1,514 | 1,505
Central States, Southeast and Southwest Areas Pension Plan [Member] |  |  |  |  |
Multiemployer Plans [Abstract] |  |  |  |  |
Contributions | [3],[4] |  | 886 | 916 | 978
Multiemployer Plans, IRS Extended Amortization Period |  | 10 years |  |  |
Other Multiemployer Plans [Member] |  |  |  |  |
Multiemployer Plans [Abstract] |  |  |  |  |
Contributions |  |  | $ 914 | 1,196 | $ 1,064
Maximum [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Multiemployer Plan, Contributions To Individual Plan, Percent |  |  | 5.00% |  |
Multiemployer Plans [Abstract] |  |  |  |  |
Investment Objectives Achievement Period |  |  | 7 years |  |
Maximum [Member] | Equity Securities [Member] | UNITED STATES |  |  |  |  |
Multiemployer Plans [Abstract] |  |  |  |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum (Deprecated 2017-01-31) |  |  | 65 |  |
Maximum [Member] | Fixed Income Securities [Member] | UNITED STATES |  |  |  |  |
Multiemployer Plans [Abstract] |  |  |  |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum (Deprecated 2017-01-31) |  |  | 80 |  |
Minimum [Member] |  |  |  |  |
Multiemployer Plans [Abstract] |  |  |  |  |
Investment Objectives Achievement Period |  |  | 5 years |  |
Minimum [Member] | Equity Securities [Member] | UNITED STATES |  |  |  |  |
Multiemployer Plans [Abstract] |  |  |  |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum (Deprecated 2017-01-31) |  |  | 20 |  |
Minimum [Member] | Fixed Income Securities [Member] | UNITED STATES |  |  |  |  |
Multiemployer Plans [Abstract] |  |  |  |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum (Deprecated 2017-01-31) |  |  | 35 |  |
Estimate of Fair Value Measurement [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | $ 114,455 |  |
Fair value of plan assets at end of period |  |  | 128,480 | 114,455 |
Estimate of Fair Value Measurement [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 104,189 |  |
Fair value of plan assets at end of period |  |  | 114,143 | 104,189 |
Estimate of Fair Value Measurement [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 5,792 |  |
Fair value of plan assets at end of period |  |  | 11,088 | 5,792 |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 4,474 |  |
Fair value of plan assets at end of period |  |  | 3,249 | 4,474 |
Estimate of Fair Value Measurement [Member] | Fixed Income, Long Term [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 16,154 |  |
Fair value of plan assets at end of period |  |  | 20,082 | 16,154 |
Estimate of Fair Value Measurement [Member] | Fixed Income, Long Term [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 16,154 |  |
Fair value of plan assets at end of period |  |  | 20,082 | 16,154 |
Estimate of Fair Value Measurement [Member] | Fixed Income, Long Term [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 0 |  |
Fair value of plan assets at end of period |  |  | 0 | 0 |
Estimate of Fair Value Measurement [Member] | Fixed Income, Long Term [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 0 |  |
Fair value of plan assets at end of period |  |  | 0 | 0 |
Estimate of Fair Value Measurement [Member] | Fixed Income, Short Term [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 3,448 |  |
Fair value of plan assets at end of period |  |  | 3,585 | 3,448 |
Estimate of Fair Value Measurement [Member] | Fixed Income, Short Term [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 3,448 |  |
Fair value of plan assets at end of period |  |  | 3,585 | 3,448 |
Estimate of Fair Value Measurement [Member] | Fixed Income, Short Term [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 0 |  |
Fair value of plan assets at end of period |  |  | 0 | 0 |
Estimate of Fair Value Measurement [Member] | Fixed Income, Short Term [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 0 |  |
Fair value of plan assets at end of period |  |  | 0 | 0 |
Estimate of Fair Value Measurement [Member] | Equity Securities, Domestic [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 52,420 |  |
Fair value of plan assets at end of period |  |  | 55,454 | 52,420 |
Estimate of Fair Value Measurement [Member] | Equity Securities, Domestic [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 52,420 |  |
Fair value of plan assets at end of period |  |  | 55,454 | 52,420 |
Estimate of Fair Value Measurement [Member] | Equity Securities, Domestic [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 0 |  |
Fair value of plan assets at end of period |  |  | 0 | 0 |
Estimate of Fair Value Measurement [Member] | Equity Securities, Domestic [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 0 |  |
Fair value of plan assets at end of period |  |  | 0 | 0 |
Estimate of Fair Value Measurement [Member] | Equity Securities, International [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 32,167 |  |
Fair value of plan assets at end of period |  |  | 35,022 | 32,167 |
Estimate of Fair Value Measurement [Member] | Equity Securities, International [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 32,167 |  |
Fair value of plan assets at end of period |  |  | 35,022 | 32,167 |
Estimate of Fair Value Measurement [Member] | Equity Securities, International [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 0 |  |
Fair value of plan assets at end of period |  |  | 0 | 0 |
Estimate of Fair Value Measurement [Member] | Equity Securities, International [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 0 |  |
Fair value of plan assets at end of period |  |  | 0 | 0 |
Estimate of Fair Value Measurement [Member] | Insurance Contracts [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 10,266 |  |
Fair value of plan assets at end of period |  |  | 14,337 | 10,266 |
Estimate of Fair Value Measurement [Member] | Insurance Contracts [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 0 |  |
Fair value of plan assets at end of period |  |  | 0 | 0 |
Estimate of Fair Value Measurement [Member] | Insurance Contracts [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 5,792 |  |
Fair value of plan assets at end of period |  |  | 11,088 | 5,792 |
Estimate of Fair Value Measurement [Member] | Insurance Contracts [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 4,474 |  |
Fair value of plan assets at end of period |  |  | 3,249 | 4,474 |
Portion at Other than Fair Value Measurement [Member] |  |  |  |  |
Change in plan assets: |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 41,247 |  |
Fair value of plan assets at end of period |  |  | $ 50,498 | $ 41,247 |
[1] | Amounts do not include deferred taxes of $13.0 million and $11.4 million at January 2, 2021 and December 28, 2019, respectively.
[2] | The Company has several plants that participate in the Western Conference of Teamsters Pension Plan under collective bargaining agreements that require minimum funding contributions. Certain of these agreements have expired and are being renegotiated with others having expiration dates through April 1, 2025.
[3] | In July 2005 this plan received a 10 year extension from the IRS for amortizing unfunded liabilities.
[4] | The Company has several processing plants that participate in the Central States, Southeast and Southwest Areas Pension Plan under collective bargaining agreements that require minimum funding contributions. The agreements have expiration dates through May 1, 2023.

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