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FINANCIAL RISK MANAGEMENT AND FAIR VALUES OF FINANCIAL INSTRUMENTS - Fair value hierarchy (FY) (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2023
Dec. 31, 2022
Dec. 31, 2021
FINANCIAL RISK MANAGEMENT AND FAIR VALUES OF FINANCIAL INSTRUMENTS      
Transfers out of Level 1 to Level 2 $ 0 $ 0  
Transfers out of Level 2 to Level 1 0 0  
Transfers into Level 3 0 0  
Transfers out of Level 3 0 0  
Quoted price | At fair value | USDC      
FINANCIAL RISK MANAGEMENT AND FAIR VALUES OF FINANCIAL INSTRUMENTS      
Financial assets at fair value 150 89 $ 99
Recent transaction price | At fair value | Investments A and B in unlisted equity instruments      
FINANCIAL RISK MANAGEMENT AND FAIR VALUES OF FINANCIAL INSTRUMENTS      
Financial assets at fair value     1,250
Recent transaction price | At fair value | Investments C and E in unlisted equity instruments      
FINANCIAL RISK MANAGEMENT AND FAIR VALUES OF FINANCIAL INSTRUMENTS      
Financial assets at fair value   11,500  
Net asset value | At fair value | Investments A, B and D in unlisted equity instruments      
FINANCIAL RISK MANAGEMENT AND FAIR VALUES OF FINANCIAL INSTRUMENTS      
Financial assets at fair value 20,586 18,348  
Net asset value | At fair value | Investment in unlisted debt instrument      
FINANCIAL RISK MANAGEMENT AND FAIR VALUES OF FINANCIAL INSTRUMENTS      
Financial assets at fair value 1,000 31,111  
Level 1 | Quoted price | At fair value | USDC      
FINANCIAL RISK MANAGEMENT AND FAIR VALUES OF FINANCIAL INSTRUMENTS      
Financial assets at fair value 150 89 99
Level 3 | Recent transaction price | At fair value | Investments A and B in unlisted equity instruments      
FINANCIAL RISK MANAGEMENT AND FAIR VALUES OF FINANCIAL INSTRUMENTS      
Financial assets at fair value     $ 1,250
Level 3 | Recent transaction price | At fair value | Investments C and E in unlisted equity instruments      
FINANCIAL RISK MANAGEMENT AND FAIR VALUES OF FINANCIAL INSTRUMENTS      
Financial assets at fair value   11,500  
Level 3 | Net asset value | At fair value | Investments A, B and D in unlisted equity instruments      
FINANCIAL RISK MANAGEMENT AND FAIR VALUES OF FINANCIAL INSTRUMENTS      
Financial assets at fair value 20,586 18,348  
Level 3 | Net asset value | At fair value | Investment in unlisted debt instrument      
FINANCIAL RISK MANAGEMENT AND FAIR VALUES OF FINANCIAL INSTRUMENTS      
Financial assets at fair value $ 1,000 $ 31,111