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Commitments and Contingencies Boyd Commitments (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2011 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Other Commitments [Line Items] |  |  |  |
Purchase price |  | $ 1,200 |  |
Project development, preopening and writedowns |  | 45,698 | $ 14,454 | $ 22,107
Development Agreement |  |  |  |
Other Commitments [Line Items] |  |  |  |
Purchase price | $ 24,500 |  |  |
Project development, preopening and writedowns |  | 8,900 |  |
Minimum |  |  |  |
Other Commitments [Line Items] |  |  |  |
Obligation to fund certain pre-development costs, annual amount |  | 1,000 |  |
Maximum |  |  |  |
Other Commitments [Line Items] |  |  |  |
Obligation to fund certain pre-development costs, annual amount |  | $ 2,000 |  |

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- Definition Unrecorded Commitment to Fund Pre-development Costs, Annual Amount + References No definition available. + Details
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