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Equity - Narrative (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |
Payment of distributions to non-controlling unitholders |  |  |  |  | $ 13,686 | $ 4,495
Payment of dividends to Class A common stockholders |  |  |  |  | $ 3,185 | $ 0
Common Class B |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |
Shares excluded from computation of diluted earnings per share (in shares) |  |  | 3,500,000 | 3,500,000 | 3,500,000 | 3,500,000
Spark HoldCo |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |
Increase (decrease) in equity ownership | 3.59% | 2.82% |  |  |  |
Common Class B |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |
Distribution to controlling interest (in shares) | 262,891 | 206,273 |  |  |  |
Spark HoldCo |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |
Payment of distributions to non-controlling unitholders | $ 6,000 | $ 5,000 | $ 3,000 |  |  |
Non-Controlling Interest Holder | Spark HoldCo |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |
Increase (decrease) in equity ownership | (3.59%) | (2.82%) |  |  |  |

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