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Investments in Other Entities and Noncontrolling Interest in a Subsidiary - NG Advantage (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023 | Oct. 14, 2014
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Outstanding balance | $ 262,955 |  | $ 262,955 |  | $ 261,161 |
Payments to acquire additional controlling interest |  |  | 165 | $ 5,500 |  |
Loss from noncontrolling interest | (174) | $ (185) | $ (347) | (320) |  |
NG Advantage |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Ownership interest after transaction (as a percent) |  |  | 93.30% |  |  |
Loss from noncontrolling interest | (200) | $ (200) | $ (300) | $ (300) |  |
Investments carried at cost | $ 6,500 |  | $ 6,500 |  | $ 6,900 |
NG Advantage |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Ownership interest acquired |  |  |  |  |  | 53.30%

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