v3.25.1
Stock Based Compensation - Schedule of Common Stock Warrant Activity (FY) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Outstanding and vested at the ending of the period (in shares)   15    
Warrant        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Outstanding and vested at the ending of the period (in shares) 15 15 32 35
Granted (in shares) 0 0 0  
Expired (in shares)   (17) (3)  
Outstanding and vested at the ending of the period (in dollars per share) $ 51 $ 51 $ 52.5 $ 53.31
Granted (in dollars per share) $ 0 0 0  
Expired (in dollars per share)   $ 53.88 $ 63.81  
Weighted average remaining contractual term (in years)   2 months 12 days 1 year 1 year 10 months 24 days
Aggregate intrinsic value (in dollars) $ 0 $ 0 $ 0 $ 0