Summary of Significant Accounting Policies - Anti-dilutive Securities (FY) (Details) - shares shares in Thousands |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Antidilutive securities | 63 | 65 | 63 | 65 |
| Employee Stock Option | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Antidilutive securities | 48 | 33 | 48 | 33 |
| Common Stock warrants - employee | ||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Antidilutive securities | 15 | 32 | 15 | 32 |