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FAIR VALUE MEASUREMENTS - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Fair Value Option Quantitative Disclosures [Line Items]          
Transfers into or out of Level 3 in the fair value measurement hierarchy $ 0 $ 0 $ 0 $ 0  
Unfunded commitments 5,547,000   5,547,000   $ 5,455,000
EGCP III          
Fair Value Option Quantitative Disclosures [Line Items]          
Unfunded commitments $ 5,028,000   $ 5,028,000