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RETIREMENT BENEFITS - Multiemployer Pension Plans (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items] |  |  |
Contributions | $ 3,761 | $ 4,785 | $ 5,292
Central States, Southeast and Southwest Areas Pension Fund |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
EIN/Pension Plan Number | 36-6044243/001 |  |
Pension Protection Act Zone Status | Red | Red |
FIP / RP Status Pending / Implemented | Implemented |  |
Contributions | $ 0 | $ 1,166 | 1,797
Surcharge Imposed | No |  |
United Food and Commercial Workers Local One Pension Fund |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
EIN/Pension Plan Number | 16-6144007/001 |  |
Pension Protection Act Zone Status | Red | Red |
FIP / RP Status Pending / Implemented | Implemented |  |
Contributions | $ 240 | $ 245 | 237
Surcharge Imposed | No |  |
IAM National Pension Fund |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
EIN/Pension Plan Number | 51-6031295/002 |  |
Pension Protection Act Zone Status | Red | Red |
FIP / RP Status Pending / Implemented | Implemented |  |
Contributions | $ 2,746 | $ 2,667 | $ 2,587
Surcharge Imposed | No |  |
Multi employer funded status |  | 87.00% | 89.00%
All Other Pension Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Contributions | $ 775 | $ 707 | $ 671

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- Definition Amount of cost for employer contribution to multiemployer plan. Multiemployer plan includes, but is not limited to, pension plan determined to be individually significant and insignificant and other postretirement benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=29639808&loc=d3e29008-114946 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947 + Details
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