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SALE OF MIDDLE MARKET LENDING PORTFOLIO (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Apr. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Business divestiture-related gains (losses) $ 0 $ (354)    
Discontinued Operations, Disposed of by Sale | Middle Market Lending Portfolio        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Sale of business       $ 2,400,000
Loans sold     $ 1,900,000  
Cash proceeds     1,900,000  
Business divestiture-related gains (losses)     $ 20,400