Related-Party Transactions - Strategic Investment Related to a Purchase of Series D Preferred Stock (FY) (Details) - USD ($) $ in Thousands |
Jun. 30, 2025 |
Dec. 31, 2024 |
Jun. 30, 2024 |
Dec. 31, 2023 |
|---|---|---|---|---|
| Class of Warrant or Right [Line Items] | ||||
| Strategic investments | $ 117,220 | $ 102,220 | $ 50,000 | $ 42,087 |
| Series D Preferred Stock | ||||
| Class of Warrant or Right [Line Items] | ||||
| Strategic investments | $ 50,000 | |||
| Percentage interest that can be requested as distribution in kind | 99.00% | |||
| Percentage of net proceeds allocated to the Company | 100.00% | |||
| Percentage of net proceeds allocated thereafter | 75.00% | |||
| Series D Preferred Stock | Affiliate of Magnetar | ||||
| Class of Warrant or Right [Line Items] | ||||
| Percentage of net proceeds allocated thereafter | 25.00% |