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Fair Value Measurements - Market Risks and Derivative Hedge Contracts (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Net asset | $ 13,002 | $ 2,477
CSI Compressco |  |
Derivatives, Fair Value [Line Items] |  |
Net asset | 9,638 |
CSI Compressco | (Level 1) |  |
Derivatives, Fair Value [Line Items] |  |
Net asset | 9,638 |
CSI Compressco | (Level 2) |  |
Derivatives, Fair Value [Line Items] |  |
Net asset | 0 |
CSI Compressco | (Level 3) |  |
Derivatives, Fair Value [Line Items] |  |
Net asset | 0 |
Standard Lithium |  |
Derivatives, Fair Value [Line Items] |  |
Net asset | 6,583 | (2,675)
Standard Lithium | (Level 1) |  |
Derivatives, Fair Value [Line Items] |  |
Net asset | 6,583 | (2,675)
Standard Lithium | (Level 2) |  |
Derivatives, Fair Value [Line Items] |  |
Net asset | 0 | 0
Standard Lithium | (Level 3) |  |
Derivatives, Fair Value [Line Items] |  |
Net asset | 0 | 0
Warrants liability |  |
Derivatives, Fair Value [Line Items] |  |
Net asset | (3,219) | (198)
Warrants liability | (Level 1) |  |
Derivatives, Fair Value [Line Items] |  |
Net asset | 0 | 0
Warrants liability | (Level 2) |  |
Derivatives, Fair Value [Line Items] |  |
Net asset | 0 | 0
Warrants liability | (Level 3) |  |
Derivatives, Fair Value [Line Items] |  |
Net asset | $ (3,219) | $ (198)

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