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Fair Value Disclosures - Assets And Liabilities Measured At Fair Value On Recurring Basis (Details) - Fair Value, Recurring - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Assets: |  |
Total Assets | $ 89,406 | $ 77,254
Liabilities: |  |
Total Liabilities | 206,112 | 145,886
Level 1 |  |
Assets: |  |
Total Assets | 2,589 | 2,277
Level 1 | Deferred compensation plan assets |  |
Assets: |  |
Total Assets | 2,589 | 2,277
Level 2 |  |
Assets: |  |
Total Assets | 86,817 | 74,977
Liabilities: |  |
Total Liabilities | 206,112 | 145,886
Level 2 | Foreign currency forward contracts |  |
Assets: |  |
Total Assets | 885 | 1,558
Liabilities: |  |
Total Liabilities | 2,399 | 1,499
Level 2 | Interest rate swap contracts |  |
Liabilities: |  |
Total Liabilities | 109,175 | 64,831
Level 2 | Deferred compensation plan assets |  |
Assets: |  |
Total Assets | 85,932 | 73,419
Level 2 | Deferred compensation plan liabilities |  |
Liabilities: |  |
Total Liabilities | $ 94,538 | $ 79,556

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