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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Fair Value, Liabilities Measured on Recurring Basis | A summary of significant recurring fair value measurements by valuation hierarchy as of December 31, 2022 and 2021, is as follows:
|  |  |  | Fair Value Measurements Using
|  | Total as of |  | Quoted Prices in Active Markets for Identical Assets or Liabilities |  | Significant Other Observable Inputs |  | Significant Unobservable Inputs
Description |  | Dec 31, 2022 |  | (Level 1) |  | (Level 2) |  | (Level 3)
|  | (In Thousands)
Investment in CSI Compressco |  | $ | 6,967 |  |  | 6,967 |  |  | — |  |  | — |
Investment in CarbonFree |  | 6,139 |  |  | — |  |  | — |  |  | 6,139 |
Investment in Standard Lithium |  | 1,180 |  |  | 1,180 |  |  | — |  |  | — |
Total |  | $ | 14,286 |  |  |  |  |  |  |
|  |  |  | Fair Value Measurements Using
|  | Total as of |  | Quoted Prices in Active Markets for Identical Assets or Liabilities |  | Significant Other Observable Inputs |  | Significant Unobservable Inputs
Description |  | Dec 31, 2021 |  | (Level 1) |  | (Level 2) |  | (Level 3)
|  | (In Thousands)
Investments in CSI Compressco |  | $ | 6,233 |  |  | 6,233 |  |  | — |  |  | — |
Investments in CarbonFree |  | 5,000 |  |  | — |  |  | — |  |  | 5,000 |
Total |  | $ | 11,233 |  |  |  |  |  |  |

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- Definition Tabular disclosure of liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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