v3.25.3
Borrowings - Narrative (FY) (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2024
USD ($)
extension_option
$ / shares
Nov. 30, 2024
USD ($)
Nov. 15, 2024
USD ($)
Oct. 22, 2024
USD ($)
Mar. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2021
USD ($)
extension_option
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
extension_option
$ / shares
shares
Jun. 30, 2025
USD ($)
Oct. 01, 2024
USD ($)
shares
Dec. 31, 2024
USD ($)
extension_option
$ / shares
Dec. 31, 2023
USD ($)
shares
Aug. 22, 2024
USD ($)
instrument
Aug. 20, 2024
USD ($)
instrument
May 02, 2024
USD ($)
Dec. 31, 2018
USD ($)
Debt Instrument [Line Items]                                
Unamortized discount $ 6,446           $ 9,791 $ 6,446 $ 9,791   $ 6,446 $ 2,133        
Write-off of loan commitment fee asset               $ 10,041   $ 0   0        
Notes payable | Series 1 promissory notes                                
Debt Instrument [Line Items]                                
Notes principal           $ 4,936                   $ 35,000
Number of extension options | extension_option 2         2   2     2          
Debt term, with extension           60 months         60 months          
Event of default, conversion multiplier 2             2     2          
Event of default, interest rate, first 36 months 12.00%             12.00%     12.00%          
Event of default, interest rate, after first 36 months 18.00%             18.00%     18.00%          
Principal amount of debt converted               $ 0   $ 396   $ 1,310        
Notes payable | Series 1 promissory notes | Class B Preferred                                
Debt Instrument [Line Items]                                
Unit price for notes converted (in usd per share) | $ / shares $ 9.6992             $ 9.6992     $ 9.6992          
Number of shares (in shares) | shares               0   40,829   135,133        
Notes payable | Series 1 promissory notes | Minimum                                
Debt Instrument [Line Items]                                
Debt term           36 months                    
Interest rate           9.00%           9.00%        
Notes payable | Series 1 promissory notes | Maximum                                
Debt Instrument [Line Items]                                
Debt term           48 months                    
Interest rate           12.00%           15.00%        
Notes payable | Series 1 promissory notes, first term extension                                
Debt Instrument [Line Items]                                
Interest rate 12.00%         12.00%   12.00%     12.00%          
Notes payable | Series 1 promissory notes, first term extension | Minimum                                
Debt Instrument [Line Items]                                
Debt term           36 months                    
Notes payable | Series 1 promissory notes, first term extension | Maximum                                
Debt Instrument [Line Items]                                
Debt term           48 months                    
Notes payable | Series 1 promissory notes, second term extension                                
Debt Instrument [Line Items]                                
Interest rate 15.00%         15.00%   15.00%     15.00%          
Notes payable | Series 1 promissory notes, second term extension | Minimum                                
Debt Instrument [Line Items]                                
Debt term           48 months                    
Notes payable | Series 1 promissory notes, second term extension | Maximum                                
Debt Instrument [Line Items]                                
Debt term           60 months                    
Notes payable | Related party notes                                
Debt Instrument [Line Items]                                
Number of debt instruments | instrument                         2 2    
Notes payable | Related party notes | Minimum                                
Debt Instrument [Line Items]                                
Interest rate 8.00%             8.00%     8.00%          
Notes payable | Related party notes | Maximum                                
Debt Instrument [Line Items]                                
Interest rate 15.99%             15.99%     15.99%          
Notes payable | Related party note one                                
Debt Instrument [Line Items]                                
Notes principal                           $ 10,000    
Loan fee due upon maturity                   $ 1,000       1,000    
Interest rate on loan fee due upon maturity                   15.99%            
Notes payable | Related party note two                                
Debt Instrument [Line Items]                                
Notes principal                         $ 2,000 $ 2,000    
Interest rate                   13.50%     11.50% 11.50%    
Principal amount due $ 1,000             $ 1,000   $ 1,000 $ 1,000          
Notes payable | Related party note three                                
Debt Instrument [Line Items]                                
Notes principal 1,000             1,000     1,000       $ 1,000  
Loan fee due upon maturity $ 63             $ 63     $ 63       $ 63  
Interest rate if not paid at maturity 8.00%             8.00%     8.00%       8.00%  
Convertible debt | Convertible promissory notes                                
Debt Instrument [Line Items]                                
Debt term                       36 months        
Interest rate                       8.00%        
Unit price for notes converted (in usd per share) | $ / shares         $ 9.74                      
Qualified financing event, minimum amount                       $ 2,000        
Conversion, discount percentage                       20.00%        
Conversion, numerator for calculation                       $ 200,000        
Principal amount of debt converted         $ 6,000                      
Accrued interest of debt converted         $ 755                      
Number of shares (in shares) | shares         693,480                      
Loss on conversion of promissory notes                   $ 1,119            
Accrued interest $ 0             $ 0     $ 0 $ 634        
Unamortized discount $ 0             $ 0     $ 0          
Term loan | WTI Facility                                
Debt Instrument [Line Items]                                
Interest rate 13.50%     13.50%     13.50% 13.50% 13.50%   13.50%          
Loss on conversion of promissory notes             $ 3,462   $ 3,462              
Aggregate principal capacity       $ 50,000                        
Spread on variable interest rate       5.00%                        
Remaining term after interest only payments period       30 months                        
Commitment fee asset       $ 16,735                        
Term loan | WTI Facility, First Tranche                                
Debt Instrument [Line Items]                                
Debt term     42 months                          
Aggregate principal capacity       $ 20,000                        
Interest only payments period     12 months 12 months                        
Proceeds from issuance of debt     $ 20,000                          
Principal and interest payments period     30 months                          
Amount of commitment fee reclassified to debt issuance cost     $ 6,694                          
Term loan | WTI Facility, Second Tranche                                
Debt Instrument [Line Items]                                
Aggregate principal capacity       $ 15,000                        
Write-off of loan commitment fee asset   $ 5,021                            
Term loan | WTI Facility, Third Tranche                                
Debt Instrument [Line Items]                                
Aggregate principal capacity       $ 15,000                        
Interest only payments period       6 months                        
Write-off of loan commitment fee asset $ 5,021                              
Term loan | WTI Facility, Third Tranche, available until March 31, 2025                                
Debt Instrument [Line Items]                                
Aggregate principal capacity       $ 7,500