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FAIR VALUE - Narrative (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2023
USD ($)
investment
Sep. 30, 2022
USD ($)
Sep. 30, 2023
USD ($)
investment
Sep. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Number of investments transferred | investment     8    
Transfers out of Level 3 | $ $ 1,323,000 $ 1,323,000  
Number of corporate sub-debt issuances | investment 2   2    
Significant Unobservable Inputs (Level 3)          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Assets, fair value disclosure | $         $ 0