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Fair Value Measurements - Assets and Liabilities Recorded at Fair Value (Details) - USD ($) $ in Thousands | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2020 | Dec. 31, 2019
Fair Value, Nonrecurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Tangible Asset Impairment Charges | $ 268,800 |  |
Fair Value Based on Significant Other Observable Inputs (Level 2) |  |  |
Assets: |  |  |
Cash surrender value of life insurance policies |  | $ 32,805 | $ 32,799
Cash flow swaps and interest rate caps designated as hedges |  | 53 | 97
Total assets |  | 32,858 | 32,896
Liabilities: |  |  |
Deferred compensation plan |  | 18,107 | 17,890
Total liabilities |  | 18,107 | 17,890
Fair Value Based on Significant Other Observable Inputs (Level 2) | Other assets |  |  |
Assets: |  |  |
Cash flow swaps and interest rate caps designated as hedges |  | $ 100 |
Fair Value Based on Significant Other Observable Inputs (Level 2) | Other accrued liabilities |  |  |
Liabilities: |  |  |
Cash flow swaps and interest rate caps designated as hedges |  |  | 0
Fair Value Based on Significant Other Observable Inputs (Level 2) | Other long-term liabilities |  |  |
Liabilities: |  |  |
Cash flow swaps and interest rate caps designated as hedges |  |  | $ 0

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