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Fair Value Disclosures - Assets And Liabilities Measured At Fair Value On Recurring Basis (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
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Assets: |  |
Assets measured at fair value on a recurring basis | $ 99,632 | $ 89,406
Liabilities: |  |
Liabilities measured at fair value on a recurring basis | 186,613 | 206,112
Fair Value, Inputs, Level 1 |  |
Assets: |  |
Assets measured at fair value on a recurring basis | 8,642 | 2,589
Fair Value, Inputs, Level 2 |  |
Assets: |  |
Assets measured at fair value on a recurring basis | 90,990 | 86,817
Liabilities: |  |
Liabilities measured at fair value on a recurring basis | 186,613 | 206,112
Fair Value, Inputs, Level 2 | Foreign currency forward contracts |  |
Assets: |  |
Assets measured at fair value on a recurring basis | 44 | 885
Liabilities: |  |
Liabilities measured at fair value on a recurring basis | 182 | 2,399
Fair Value, Inputs, Level 2 | Interest rate swap contracts |  |
Liabilities: |  |
Liabilities measured at fair value on a recurring basis | 80,041 | 109,175
Fair Value, Inputs, Level 2 | Deferred compensation plan assets |  |
Assets: |  |
Assets measured at fair value on a recurring basis | 90,946 | 85,932
Fair Value, Inputs, Level 2 | Deferred compensation plan liabilities |  |
Liabilities: |  |
Liabilities measured at fair value on a recurring basis | $ 106,390 | $ 94,538

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