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Pension Benefits (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Oct. 29, 2020 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Components of Net Periodic Benefit Costs for the Pension Plans |  |  |  |  |
Service cost |  | $ 1,129 | $ 1,395 | $ 3,387 | $ 4,186
Interest cost |  | 590 | 699 | 1,768 | 2,094
Expected return on plan assets that reduces periodic pension benefit cost |  | (434) | (393) | (1,301) | (1,180)
Amortization of prior service cost |  | 4 | 4 | 13 | 13
Amortization of net actuarial loss |  | 238 | 239 | 713 | 718
Settlements |  | 1,282 | 0 | 1,282 | 0
Net periodic benefit cost |  | $ 2,809 | $ 1,944 | $ 5,862 | $ 5,831
Pension plans, net gain (loss) amortization threshold |  | 10.00% |  | 10.00% |
Subsequent Event [Member] |  |  |  |  |
Components of Net Periodic Benefit Costs for the Pension Plans |  |  |  |  |
Employer contributions | $ 5,900 |  |  |  |

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- Definition Gain and loses in excess of 10% of the greater of the projected benefit obligation or fari value of plan assets will be amortized over the average remaining service period + References No definition available. + Details
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