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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Assets and Liabilities (Details) $ in Thousands | Jun. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
--- | --- | ---
Discount Rate | Valuation Technique, Discounted Cash Flow |  |
Liabilities: |  |
Measurement input | 0.142 | 0.140
Recurring basis |  |
Assets: |  |
Assets | $ 33,102 | $ 19,240
Liabilities: |  |
Liabilities | 117,040 | 112,000
Recurring basis | Cash and cash equivalents |  |
Assets: |  |
Money market funds | 25,988 | 11,732
Recurring basis | Other long-term assets |  |
Assets: |  |
Equity, bond, and money market mutual funds held in trust related to the Voluntary Savings Plan | 4,159 | 3,982
Interest rate swap | 2,955 | 3,526
Recurring basis | Other long-term liabilities |  |
Liabilities: |  |
Contingent consideration | 117,040 | 112,000
Recurring basis | Level 1 |  |
Assets: |  |
Assets | 30,147 | 15,714
Recurring basis | Level 1 | Cash and cash equivalents |  |
Assets: |  |
Money market funds | 25,988 | 11,732
Recurring basis | Level 1 | Other long-term assets |  |
Assets: |  |
Equity, bond, and money market mutual funds held in trust related to the Voluntary Savings Plan | 4,159 | 3,982
Recurring basis | Level 2 |  |
Assets: |  |
Assets | 2,955 | 3,526
Recurring basis | Level 2 | Other long-term assets |  |
Assets: |  |
Interest rate swap | 2,955 | 3,526
Recurring basis | Level 3 |  |
Liabilities: |  |
Liabilities | 117,040 | 112,000
Recurring basis | Level 3 | Other long-term liabilities |  |
Liabilities: |  |
Contingent consideration | $ 117,040 | $ 112,000

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