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Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |
Total Gain (loss) on long-lived assets held and used | $ (20,768) | $ (27,414) | $ (4,894)
Total Gain (loss) on goodwill |  | $ 0 |
Non-recurring basis |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |
Impairment of Long-Lived Assets Held-for-use | (1,345) |  |
Total Gain (loss) on long-lived assets held and used | (17,741) |  |
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down | 1,700 |  |
Non-recurring basis | Significant Unobservable Inputs (Level 3) as of December 31, 2019 |  |  |
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] |  |  |
Long-lived assets held and used | 7,286 |  |
Assets Held-for-sale, Long Lived, Fair Value Disclosure | $ 23,030 |  |

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