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Investments | 12 Months Ended
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Dec. 31, 2023
Investments in and Advances to Affiliates [Abstract] |
Investments | INVESTMENTS Our investments as of December 31, 2023 and 2022, consist of the following:
| December 31,
| 2023 |  | 2022
| (In Thousands)
Investment in CSI Compressco | $ | 8,538 |  |  | $ | 6,967 |
Investment in CarbonFree | 6,850 |  |  | 6,139 |
Investment in Standard Lithium | 1,616 |  |  | 1,180 |
Other investments | 350 |  |  | — |
Total investments | $ | 17,354 |  |  | $ | 14,286 |
We continue to own approximately 3.7% of the outstanding CSI Compressco common units (NASDAQ: CCLP) as of December 31, 2023. CarbonFree is a carbon capture company with patented technologies that capture CO 2 and mineralize emissions to make commercial, carbon-negative chemicals. We have an intellectual property joint development agreement in place with CarbonFree to evaluate potential new technologies. In December 2021, we invested $5.0 million in a convertible note issued by CarbonFree. Interest on the convertible note is capitalized into the convertible note annually in December. Our exposure to potential losses by CarbonFree is limited to our investment in the convertible note and associated interest. In addition, we are party to agreements whereby Standard Lithium has the right to explore for, and an option to acquire the rights to produce and extract, lithium in our Arkansas leases and other additional potential resources in the Mojave region of California. The Company receives cash and stock of Standard Lithium under the terms of the arrangements. See Note 14 - “Fair Value Measurements” for further information.

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- Definition The entire disclosure for investment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//320/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Topic 321 -Publisher FASB -URI https://asc.fasb.org//321/tableOfContent Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Topic 325 -Publisher FASB -URI https://asc.fasb.org//325/tableOfContent + Details
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