LOSS PER SHARE (Q1) (Details) - shares |
3 Months Ended | |
|---|---|---|
Mar. 31, 2024 |
Mar. 31, 2023 |
|
| Loss Per Share [Abstract] | ||
| Total common stock equivalents excluded from dilutive loss per share (in shares) | 27,741,229 | 0 |
| Potential common shares diluted (in shares) | 0 | 0 |
| Escrow shares (in shares) | 4,667,033 | |
| Convertible Notes [Member] | ||
| Loss Per Share [Abstract] | ||
| Total common stock equivalents excluded from dilutive loss per share (in shares) | 6,250,000 | 0 |
| Warrants [Member] | ||
| Loss Per Share [Abstract] | ||
| Total common stock equivalents excluded from dilutive loss per share (in shares) | 21,491,229 | 0 |