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Fair Value and Equity Investments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Fair Value on a Recurring Basis [Member] - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Financial assets: |  |
Cash equivalents and current investments | $ 20,752 | $ 39,084
Life insurance contracts | 52,149 | 48,410
Financial assets (liabilities) | 72,901 | 87,494
Level 1 [Member] |  |
Financial assets: |  |
Cash equivalents and current investments | 20,752 | 39,084
Life insurance contracts | 0 | 0
Financial assets (liabilities) | 20,752 | 39,084
Level 2 [Member] |  |
Financial assets: |  |
Cash equivalents and current investments | 0 | 0
Life insurance contracts | 0 | 0
Financial assets (liabilities) | 0 | 0
Level 3 [Member] |  |
Financial assets: |  |
Cash equivalents and current investments | 0 | 0
Life insurance contracts | 52,149 | 48,410
Financial assets (liabilities) | $ 52,149 | $ 48,410

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