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Income Taxes - Summary of Deferred Tax Assets and Liabilities (FY) (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Deferred tax assets |  |
Investment in partnership | $ 129,297 | $ 133,569
Tax receivable agreement | 37,021 | 37,254
Net operating loss carryovers | 15,689 | 12,453
Tax credit carryovers | 4,140 | 3,679
Other | 535 | 111
Total deferred tax asset | 186,682 | 187,066
Less: valuation allowance | (186,682) | (187,066)
Net deferred tax asset | $ 0 | $ 0

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