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DEBT - Aggregate principal amount and interest rates (Details) - Notes payable to finance companies for insurance - USD ($)
Jun. 30, 2023
Dec. 31, 2022
DEBT    
Aggregate principal amount outstanding $ 313,000 $ 205,000
Minimum    
DEBT    
Interest rate (as a percent) 7.99% 7.99%
Maximum    
DEBT    
Interest rate (as a percent) 8.24% 8.24%