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Investments in and Advances to Affiliates (Details) - USD ($) $ in Thousands | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |
Investments | $ 20,386 | $ 17,354 | $ 13,902 | $ 14,286 |
Total investments | $ 20,386 | 17,354 |  |  |
CSI Compressco |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |
Ownership percentage | 3.70% |  |  |  |
Total investments | $ 12,204 | 8,538 |  |  |
CarbonFree |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |
Investments |  |  |  |  | $ 5,000
Ownership percentage | 1.00% |  |  |  |
Total investments | $ 6,888 | 6,850 |  |  |
Deferred conversion period | 2 years |  |  |  |
Standard Lithium |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |
Total investments | $ 944 | 1,616 |  |  |
Other Investments |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |
Investments | 350 |  |  |  |
Total investments | $ 350 | $ 350 |  |  |

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