v3.26.1
NET ASSETS - Summary of Changes in Net Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jan. 17, 2025
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Investment Company, Net Assets [Roll Forward]          
Common stock at beginning of period (in shares)       71,807,190  
Net assets at beginning of period   $ 1,116,561 $ 1,212,389 $ 1,167,388 $ 905,204
Repurchase of common stock   (12,526)   (31,027)  
Common stock issued, net of offering and underwriting costs       0 101
Common stock issued - CSL III Merger       $ 0 315,838
Common stock issued - Preferred Stock Exchange         $ 0
Dividend reinvestment (in shares) 50,728     0 50,728
Dividend reinvestment $ 949     $ 0 $ 949
Net investment income (loss)   23,996 28,250 49,200 49,879
Net realized gain (loss)   (1,534) (2,599) (11,152) (21,940)
Net change in unrealized appreciation (depreciation)   (22,522) (11,021) (42,326) 745
Dividends declared on common stock   $ (24,227) $ (29,161) $ (52,335) $ (52,918)
Common stock at end of period (in shares)   69,160,814 72,902,981 69,160,814 72,902,981
Net assets at end of period   $ 1,079,748 $ 1,197,858 $ 1,079,748 $ 1,197,858
Preferred Stock          
Investment Company, Net Assets [Roll Forward]          
Preferred stock at beginning of period (in shares)         2,000,000
Net assets at beginning of period         $ 50,000
Common stock issued - Preferred Stock Exchange (in shares)         (2,000,000)
Common stock issued - Preferred Stock Exchange         $ (50,000)
Preferred stock at end of period (in shares)     0   0
Net assets at end of period     $ 0   $ 0
  Common Stock          
Investment Company, Net Assets [Roll Forward]          
Common stock at beginning of period (in shares)   70,270,936 72,902,981 71,807,190 50,906,262
Net assets at beginning of period   $ 703 $ 729 $ 718 $ 509
Repurchase of common stock (in shares)   (1,110,122) 0 (2,646,376) 0
Repurchase of common stock   $ (11)   $ (26)  
Common stock issued, net of offering and underwriting costs (in shares)         6,075
Common stock issued - CSL III Merger (in shares)         18,935,108
Common stock issued - CSL III Merger         $ 189
Common stock issued - Preferred Stock Exchange (in shares)         3,004,808
Common stock issued - Preferred Stock Exchange         $ 30
Dividend reinvestment (in shares)         50,728
Dividend reinvestment         $ 1
Common stock at end of period (in shares)   69,160,814 72,902,981 69,160,814 72,902,981
Net assets at end of period   $ 692 $ 729 $ 692 $ 729
Capital in Excess of Par Value          
Investment Company, Net Assets [Roll Forward]          
Net assets at beginning of period   1,345,512 1,380,976 1,363,998 1,014,308
Repurchase of common stock   (12,515)   (31,001)  
Common stock issued, net of offering and underwriting costs         101
Common stock issued - CSL III Merger         315,649
Common stock issued - Preferred Stock Exchange         49,970
Dividend reinvestment         948
Net assets at end of period   1,332,997 1,380,976 1,332,997 1,380,976
Offering Costs          
Investment Company, Net Assets [Roll Forward]          
Net assets at beginning of period   (1,633) (1,633) (1,633) (1,633)
Net assets at end of period   (1,633) (1,633) (1,633) (1,633)
Accumulated Net Investment Income (Loss)          
Investment Company, Net Assets [Roll Forward]          
Net assets at beginning of period   47,019 66,312 49,923 68,440
Net investment income (loss)   23,996 28,250 49,200 49,879
Dividends declared on common stock   (24,227) (29,161) (52,335) (52,918)
Net assets at end of period   46,788 65,401 46,788 65,401
Accumulated Net Realized Gain (Loss)          
Investment Company, Net Assets [Roll Forward]          
Net assets at beginning of period   (241,980) (204,687) (232,362) (185,346)
Net realized gain (loss)   (1,534) (2,599) (11,152) (21,940)
Net assets at end of period   (243,514) (207,286) (243,514) (207,286)
Accumulated Net Unrealized Appreciation (Depreciation)          
Investment Company, Net Assets [Roll Forward]          
Net assets at beginning of period   (33,060) (29,308) (13,256) (41,074)
Net change in unrealized appreciation (depreciation)   (22,522) (11,021) (42,326) 745
Net assets at end of period   $ (55,582) $ (40,329) $ (55,582) $ (40,329)