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Employee Retirement and Benefit Plans - Schedule of Contributions to Each Multiemployer Pension Plans (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Multiemployer pension plans |  |  |
Multiemployer Plans [Line Items] |  |  |
Total contributions | $ 2,043 | $ 3,032 | $ 2,947
Multiemployer pension plans | Central Pension Fund of the IUOE and Participating Employers |  |  |
Multiemployer Plans [Line Items] |  |  |
Total contributions | 545 | 704 | 753
Multiemployer pension plans | Southern Nevada Culinary and Bartenders Pension Plan |  |  |
Multiemployer Plans [Line Items] |  |  |
Total contributions | 1,356 | 2,130 | 2,003
Multiemployer pension plans | Other pension plans |  |  |
Multiemployer Plans [Line Items] |  |  |
Total contributions | 142 | 198 | 191
Multiemployer benefit plans (excluding pension plans) |  |  |
Multiemployer Plans [Line Items] |  |  |
Total contributions | 5,219 | 8,761 | 7,813
Multiemployer benefit plans (excluding pension plans) | HEREIU Welfare Fund |  |  |
Multiemployer Plans [Line Items] |  |  |
Total contributions | 5,216 | 8,757 | 7,807
Multiemployer benefit plans (excluding pension plans) | All other |  |  |
Multiemployer Plans [Line Items] |  |  |
Total contributions | $ 3 | $ 4 | $ 6

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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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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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