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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, 2018 | Dec. 31, 2017
Multiemployer Pension Plans [Member] |  |
Multiemployer Plans [Line Items] |  |
Total Contributions | $ 2,947 | $ 663
Multiemployer Pension Plans [Member] | Central Pension Fund of the IUOE and Participating Employers [Member] |  |
Multiemployer Plans [Line Items] |  |
Total Contributions | 753 | 165
Multiemployer Pension Plans [Member] | Southern Nevada Culinary and Bartenders Pension Plan [Member] |  |
Multiemployer Plans [Line Items] |  |
Total Contributions | 2,003 | 453
Multiemployer Pension Plans [Member] | Other Pension Plans [Member] |  |
Multiemployer Plans [Line Items] |  |
Total Contributions | 191 | 45
Multiemployer benefit plans (excluding pension plans) [Member] |  |
Multiemployer Plans [Line Items] |  |
Total Contributions | 7,813 | 1,693
Multiemployer benefit plans (excluding pension plans) [Member] | HEREIU Welfare Fund [Member] |  |
Multiemployer Plans [Line Items] |  |
Total Contributions | 7,807 | 1,691
Multiemployer benefit plans (excluding pension plans) [Member] | All Other [Member] |  |
Multiemployer Plans [Line Items] |  |
Total Contributions | $ 6 | $ 2

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- Definition Amount of contributions made to multiemployer plan by employer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 + 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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