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v3.21.1

Fair Value Measurements - Assets and Liabilities, Measured on Recurring Basis (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Assets: |  |
Marketable securities in deferred compensation plan | $ 3,019 | $ 3,027
Fair value measurement on a recurring basis |  |
Assets: |  |
Other marketable securities | 31 |
Interest rate derivatives | 77 |
Total assets | 3,127 |
Liabilities: |  |
Deferred compensation plan liability | 3,019 |
Interest rate derivatives | 7,640 |
Total liabilities | 10,659 |
Fair value measurement on a recurring basis | Mutual funds |  |
Assets: |  |
Marketable securities in deferred compensation plan | 3,005 |
Fair value measurement on a recurring basis | Other |  |
Assets: |  |
Marketable securities in deferred compensation plan | 14 |
Fair value measurement on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets: |  |
Other marketable securities | 31 |
Interest rate derivatives | 0 |
Total assets | 3,050 |
Liabilities: |  |
Deferred compensation plan liability | 0 |
Interest rate derivatives | 0 |
Total liabilities | 0 |
Fair value measurement on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mutual funds |  |
Assets: |  |
Marketable securities in deferred compensation plan | 3,005 |
Fair value measurement on a recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other |  |
Assets: |  |
Marketable securities in deferred compensation plan | 14 |
Fair value measurement on a recurring basis | Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Other marketable securities | 0 |
Interest rate derivatives | 77 |
Total assets | 77 |
Liabilities: |  |
Deferred compensation plan liability | 3,019 |
Interest rate derivatives | 7,640 |
Total liabilities | 10,659 |
Fair value measurement on a recurring basis | Significant Other Observable Inputs (Level 2) | Mutual funds |  |
Assets: |  |
Marketable securities in deferred compensation plan | 0 |
Fair value measurement on a recurring basis | Significant Other Observable Inputs (Level 2) | Other |  |
Assets: |  |
Marketable securities in deferred compensation plan | 0 |
Fair value measurement on a recurring basis | Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Other marketable securities | 0 |
Interest rate derivatives | 0 |
Total assets | 0 |
Liabilities: |  |
Deferred compensation plan liability | 0 |
Interest rate derivatives | 0 |
Total liabilities | 0 |
Fair value measurement on a recurring basis | Significant Unobservable Inputs (Level 3) | Mutual funds |  |
Assets: |  |
Marketable securities in deferred compensation plan | 0 |
Fair value measurement on a recurring basis | Significant Unobservable Inputs (Level 3) | Other |  |
Assets: |  |
Marketable securities in deferred compensation plan | $ 0 |

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