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Investments in Associated Companies - Summarized Financial Information (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Feb. 28, 2021
Equity in net income of associated companies | $ 1,965 | $ 9,379 | $ 7,352 |
Houghton Korea |  |  |  |
Equity in net income of associated companies | 2,644 | 3,808 | 5,241 |
Nippon Japan |  |  |  |
Equity in net income of associated companies | 323 | 461 | 853 |
Kelko Panama |  |  |  |
Equity in net income of associated companies | 425 | 154 | 107 |
Grindaix |  |  |  |
Equity in net income of associated companies | 0 | (37) | 0 |
Equity method investment, ownership percentage |  |  |  | 38.00%
Primex |  |  |  |
Equity in net income of associated companies | $ (1,427) | $ 4,993 | $ 1,151 |

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