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Investment in DSM Semichem LLC - Schedule of Investment Income (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Summary of Investment Holdings |  |  |
Total Assets | $ 538,509 | $ 509,375 |
Long-Term Debt | 437,635 | 421,173 |
Revenues | 707,622 | 797,963 | $ 1,018,878
Net Income (Loss) | (1,010) | $ 1,369 | $ (2,407)
DSM Semichem LLC |  |  |
Summary of Investment Holdings |  |  |
Total Assets | 105,773 |  |
Long-Term Debt | 31,700 |  |
Members' Equity/Partners' Capital | 68,513 |  |
Revenues | 0 |  |
Net Income (Loss) | $ (6,240) |  |

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