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)