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RELATED PARTY TRANSACTIONS - Additional information (FY) (Details) - USD ($)
1 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2022
Feb. 28, 2021
Jun. 30, 2023
Dec. 31, 2022
Jul. 31, 2022
RELATED PARTY TRANSACTIONS          
Capital contribution made by Group to limited partnership $ 17,000,000     $ 17,000,000  
Loss on change in fair value of financial assets at fair value through profit or loss $ 952,000   $ 2,238,000 $ (952,000)  
Revolving line of credit [Member]          
RELATED PARTY TRANSACTIONS          
Interest received   $ 800,000      
Matrixport Group [Member]          
RELATED PARTY TRANSACTIONS          
Capital commitment         $ 20,000,000
Matrixport Group [Member] | Revolving line of credit [Member]          
RELATED PARTY TRANSACTIONS          
Maximum amount   $ 20,000,000      
Borrowings, interest rate   12.50%      
Repayments of each tranche of credit   60 days