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Investments in Other Entities and Noncontrolling Interest in a Subsidiary - NG Advantage (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Oct. 14, 2014
Schedule of Equity Method Investments [Line Items]
Outstanding balance	$ 261,968		$ 261,161
Loss from noncontrolling interest	(173)	$ (135)
Investments carried at cost	8,000
NG Advantage | NG Advantage
Schedule of Equity Method Investments [Line Items]
Loss from noncontrolling interest	200	$ 100
Noncontrolling interest, fair value	$ 6,700		$ 6,900
Common unit purchase agreement | NG Advantage
Schedule of Equity Method Investments [Line Items]
Ownership interest acquired				53.30%
Ownership interest after transaction (as a percent)	93.30%

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