v3.24.4
Loan Payable (FY) (Details) - Term Loan - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Feb. 22, 2021
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Dec. 31, 2022
Short-term Debt [Line Items]              
Initial borrowing capacity $ 40,000,000            
Interest rate 12.00%            
Proceeds from short-term borrowings $ 25,000,000            
Amount no longer available for borrowing $ 15,000,000            
Debt term 2 years            
Unamortized debt discount $ 15,800,000            
Percentage of debt discount in excess of initial face value 63.00%            
Calculated effective interest rate 126.00% 28.20%   28.20%   28.20%  
Interest expense amortization   $ 0 $ 300,000 $ 45,700 $ 1,200,000 $ 1,400,000 $ 2,700,000
Loans payable           2,300,000  
Unamortized debt discount and issuance costs           45,700  
Long-term debt, due in 2024           $ 2,300,000