Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of changes in Investments

The change in our investments for the years ended December 31, 2024, 2023, and 2022 were as follows:

	Year Ended December 31, 2024
	Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets or Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
	(In Thousands)
Investment balance at beginning of period	$	10,154	$	—	$	7,200	$	17,354
Purchase of investments	—		1,000		21		1,021
Reclassification between Level 2 and Level 3 fair value	—		350		(350)		—
Unrealized gain on equity securities	9,407		38		1,130		10,575
Unrealized loss on embedded option	—		—		(1,971)		(1,971)
Unrealized gain on convertible note, excluding embedded option	—		—		1,180		1,180
Investment balance at end of period	$	19,561	$	1,388	$	7,210	$	28,159

	Year Ended December 31, 2023
	Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets or Liabilities		Significant Unobservable Inputs
	(Level 1)		(Level 3)		Total
	(In Thousands)
Investment balance at beginning of period	$	8,147	$	6,139	$	14,286
Purchase of investments	—		350		350
Unrealized gain on equity securities	2,007		—		2,007
Unrealized loss on embedded option	—		(16)		(16)
Unrealized gain on convertible note, excluding embedded option	—		727		727
Investment balance at end of period	$	10,154	$	7,200	$	17,354

	Year Ended December 31, 2022
	Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets or Liabilities		Significant Unobservable Inputs
	(Level 1)		(Level 3)		Total
	(In Thousands)
Investment balance at beginning of period	$	6,233	$	5,000	$	11,233
Unrealized gain on equity securities	1,914		—		1,914
Unrealized gain on embedded option	—		1,211		1,211
Unrealized loss on convertible note, excluding embedded option	—		(72)		(72)
Investment balance at end of period	$	8,147	$	6,139	$	14,286

Fair Value, Liabilities Measured on Recurring Basis

A summary of significant recurring fair value measurements by valuation hierarchy as of December 31, 2024 and 2023, 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, 2024		(Level 1)	(Level 2)	(Level 3)
	(In Thousands)
Investments in Kodiak(1)	$	18,393	18,393	—	—
Investments in Standard Lithium	1,168		1,168	—	—
Other investments	8,598		—	1,388	7,210
Investments	$	28,159

(1)        Kodiak acquired CSI Compressco on April 1, 2024.

			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, 2023		(Level 1)	(Level 2)	(Level 3)
	(In Thousands)
Investments in CSI Compressco	$	8,538	8,538	—	—
Investments in Standard Lithium	1,616		1,616	—	—
Other investments	7,200		—	—	7,200
Investments	$	17,354