v3.25.3
Borrowings - Interest Expense (Q2) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Oct. 01, 2024
Dec. 31, 2023
Series 1 promissory notes | Notes payable              
Debt Instrument [Line Items]              
Interest attributable to contractual interest $ 16 $ 29 $ 44 $ 48 $ 99 $ 138 $ 297
Interest attributable to amortization of issuance costs and discounts   0       0 32
Total interest expense   29       138 329
Related party notes | Notes payable              
Debt Instrument [Line Items]              
Total interest expense 0 611 0 419 0 932 0
WTI Facility | Term loan              
Debt Instrument [Line Items]              
Interest attributable to contractual interest 683 352 0 1,358 0 0 0
Interest attributable to amortization of issuance costs and discounts 348 248 0 856 0 0 0
Total interest expense 1,031 $ 600 0 2,214 0 $ 0 $ 0
Convertible debentures | Convertible debt              
Debt Instrument [Line Items]              
Interest attributable to amortization of issuance costs and discounts 1,701   0 1,701 0    
Total interest expense $ 1,701   $ 0 $ 1,701 $ 0