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PENSION AND OTHER POSTRETIREMENT BENEFITS - Schedule of Defined Benefit Plan Obligations and Assets (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 29, 2024 | Sep. 24, 2023 | Sep. 29, 2024 | Sep. 24, 2023 | Dec. 31, 2023 | Dec. 25, 2022
Change in projected benefit obligation |  |  |  |  |  |
Projected benefit obligation, end of period | $ 43,400 |  | $ 43,400 |  |  |
Pension Benefits |  |  |  |  |  |
Change in projected benefit obligation |  |  |  |  |  |
Projected benefit obligation, beginning of period |  |  | 237,508 | $ 236,147 |  |
Interest cost | 3,140 | $ 2,821 | 8,089 | 7,918 |  |
Actuarial loss (gain) |  |  | (8,762) | (11,882) |  |
Benefits paid |  |  | (10,037) | (11,987) |  |
Curtailments and settlements |  |  | (46,250) | 0 |  |
Currency translation loss |  |  | 3,601 | 5,201 |  |
Projected benefit obligation, end of period | 184,149 | 225,397 | 184,149 | 225,397 |  |
Change in plan assets |  |  |  |  |  |
Fair value of plan assets, beginning of period |  |  | 225,451 | 210,133 |  |
Actual return on plan assets |  |  | 8,724 | 5,048 |  |
Contributions by employer |  |  | 4,965 | 6,423 |  |
Benefits paid |  |  | (10,037) | (11,987) |  |
Curtailments and settlements |  |  | (46,250) | 0 |  |
Expenses paid from assets |  |  | (304) | (200) |  |
Currency translation gain |  |  | 3,739 | 4,834 |  |
Fair value of plan assets, end of period | 186,288 | 214,251 | 186,288 | 214,251 |  |
Funded status |  |  |  |  |  |
Overfunded (underfunded) benefit obligation, end of period | 2,139 |  | 2,139 |  | $ (12,057) |
Amounts recognized in the Condensed Consolidated Balance Sheets at end of period |  |  |  |  |  |
Noncurrent asset | 2,362 |  | 2,362 |  | 0 |
Current liability | (237) |  | (237) |  | (7,717) |
Long-term liability | 14 |  | 14 |  | (4,340) |
Net financial position | 2,139 |  | 2,139 |  | (12,057) |
Amounts recognized in accumulated other comprehensive loss at end of period |  |  |  |  |  |
Net actuarial loss (gain) | 19,565 | 38,190 | 19,565 | 38,190 | 40,487 | $ 48,121
Other Benefits |  |  |  |  |  |
Change in projected benefit obligation |  |  |  |  |  |
Projected benefit obligation, beginning of period |  |  | 1,160 | 1,169 |  |
Interest cost | 13 | 14 | 35 | 36 |  |
Actuarial loss (gain) |  |  | 9 | (24) |  |
Benefits paid |  |  | (124) | (118) |  |
Curtailments and settlements |  |  | 0 | 0 |  |
Currency translation loss |  |  | 0 | 0 |  |
Projected benefit obligation, end of period | 1,080 | 1,063 | 1,080 | 1,063 |  |
Change in plan assets |  |  |  |  |  |
Fair value of plan assets, beginning of period |  |  | 0 | 0 |  |
Actual return on plan assets |  |  | 0 | 0 |  |
Contributions by employer |  |  | 124 | 118 |  |
Benefits paid |  |  | (124) | (118) |  |
Curtailments and settlements |  |  | 0 | 0 |  |
Expenses paid from assets |  |  | 0 | 0 |  |
Currency translation gain |  |  | 0 | 0 |  |
Fair value of plan assets, end of period | 0 | 0 | 0 | 0 |  |
Funded status |  |  |  |  |  |
Overfunded (underfunded) benefit obligation, end of period | (1,080) |  | (1,080) |  | (1,160) |
Amounts recognized in the Condensed Consolidated Balance Sheets at end of period |  |  |  |  |  |
Noncurrent asset | 0 |  | 0 |  | 0 |
Current liability | (187) |  | (187) |  | (187) |
Long-term liability | (893) |  | (893) |  | (973) |
Net financial position | (1,080) |  | (1,080) |  | (1,160) |
Amounts recognized in accumulated other comprehensive loss at end of period |  |  |  |  |  |
Net actuarial loss (gain) | $ (78) | $ (90) | $ (78) | $ (90) | $ (87) | $ (66)

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