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Stock-based Compensation - Additional Information (Q2) (Details) - USD ($) |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 16, 2021 | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2021 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Period of exchange agreement | 180 days |  |  |  |  |  |  |  |
Shares converted basis (in shares) | 1 |  |  |  |  |  |  |  |
Share-based compensation expense |  | $ 2,752,000 | $ 3,709,000 | $ 5,571,000 | $ 8,092,000 | $ 29,300,000 | $ 13,515,000 | $ 23,493,000 | $ 29,324,000
Class P Units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Nonvested award, cost not yet recognized |  | 100,000 |  | $ 100,000 |  |  | $ 200,000 |  |
Weighted-average period |  |  |  | 4 months 24 days |  |  | 10 months 24 days |  |
Share-based compensation expense |  | 100,000 | 100,000 | $ 100,000 | 400,000 |  | $ 500,000 | 2,300,000 | 20,900,000
RSUs |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Nonvested award, cost not yet recognized |  | 11,900,000 |  | $ 11,900,000 |  |  | $ 20,600,000 |  |
Weighted-average period |  |  |  | 1 year 4 months 24 days |  |  | 1 year 9 months 18 days |  |
Share-based compensation expense |  | 2,700,000 | 3,400,000 | $ 5,400,000 | 7,400,000 |  | $ 13,100,000 | $ 21,200,000 | $ 8,000,000
PRSUs |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Nonvested award, cost not yet recognized |  |  |  |  |  |  | $ 0 |  |
Share-based compensation expense |  | $ 40,000.00 | $ 200,000 | $ 100,000 | $ 300,000 |  |  |  |
PRSUs | Minimum |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Target award |  |  |  | 0.00% |  |  | 0.00% |  |
PRSUs | Maximum |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Target award |  |  |  | 200.00% |  |  | 200.00% |  |
Class V Common Stock |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ 0.0001 | $ 0.0001 |  | $ 0.0001 |  |  | $ 0.0001 | $ 0.0001 |
Class A Common Stock |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Common stock, par value (in dollars per share) |  | $ 0.0001 |  | $ 0.0001 |  |  | $ 0.0001 | $ 0.0001 |
Class A Common Stock | 2021 Plan |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Number of shares authorized (in shares) |  | 33,146,412 |  | 33,146,412 |  |  | 33,146,412 |  |
Period of automatic increase of shares |  |  |  | 10 years |  |  | 10 years |  |
Percent of increase in shares from capital stock outstanding |  | 5.00% |  | 5.00% |  |  | 5.00% |  |
Number of shares available for future issuance (in shares) |  | 20,415,013 |  | 20,415,013 |  |  | 19,530,046 |  |

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