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Employee Benefit Plans (Tables) | 9 Months Ended
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Aug. 23, 2020
Retirement Benefits [Abstract] |
Schedule of defined benefit plans disclosures | The following table summarizes the total net periodic benefit cost for the Company's defined pension plans and postretirement benefit plans:
| Three Months Ended |  |  |  | Nine Months Ended |  |
| August 23, 2020 |  | August 25, 2019 |  | August 23, 2020 |  | August 25, 2019
| (Dollars in thousands) |  |  |  |  |  |
Net periodic benefit cost: |  |  |  |  |  |  |
Pension benefits | $ | 1,830 |  |  | $ | 3,975 |  |  | $ | 5,186 |  |  | $ | 11,968 |
Postretirement benefits | 509 |  |  | 893 |  |  | 1,528 |  |  | 2,679 |
Net periodic benefit cost | $ | 2,339 |  |  | $ | 4,868 |  |  | $ | 6,714 |  |  | $ | 14,647 |

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- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2439-114920 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2410-114920 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2417-114920 + Details
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