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Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Assets: |  |
Fair value of assets | $ 36,892 | $ 46,686
Liabilities: |  |
Deferred compensation plan liability | 7,101 | 7,531
Fair value of liabilities | 7,101 | 7,531
Commercial paper |  |
Assets: |  |
Fair value of assets | 25,714 | 14,663
Treasury bill |  |
Assets: |  |
Fair value of assets |  | 12,946
U.S. government agency bonds |  |
Assets: |  |
Fair value of assets | 3,977 | 11,446
Money market |  |
Assets: |  |
Fair value of assets | 7,201 | 7,631
Level 1 |  |
Assets: |  |
Fair value of assets | 7,201 | 7,631
Liabilities: |  |
Deferred compensation plan liability | 7,101 | 7,531
Fair value of liabilities | 7,101 | 7,531
Level 1 | Commercial paper |  |
Assets: |  |
Fair value of assets | 0 | 0
Level 1 | Treasury bill |  |
Assets: |  |
Fair value of assets |  | 0
Level 1 | U.S. government agency bonds |  |
Assets: |  |
Fair value of assets | 0 | 0
Level 1 | Money market |  |
Assets: |  |
Fair value of assets | 7,201 | 7,631
Level 2 |  |
Assets: |  |
Fair value of assets | 29,691 | 39,055
Liabilities: |  |
Deferred compensation plan liability | 0 | 0
Fair value of liabilities | 0 | 0
Level 2 | Commercial paper |  |
Assets: |  |
Fair value of assets | 25,714 | 14,663
Level 2 | Treasury bill |  |
Assets: |  |
Fair value of assets |  | 12,946
Level 2 | U.S. government agency bonds |  |
Assets: |  |
Fair value of assets | 3,977 | 11,446
Level 2 | Money market |  |
Assets: |  |
Fair value of assets | $ 0 | $ 0

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