Quarterly report pursuant to Section 13 or 15(d)

DIVIDENDS, DISTRIBUTIONS AND TAXABLE INCOME - Reconciliation to Taxable Income and to Total Distributions Declared to Common Stockholders (Details)

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DIVIDENDS, DISTRIBUTIONS AND TAXABLE INCOME - Reconciliation to Taxable Income and to Total Distributions Declared to Common Stockholders (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2022
Sep. 30, 2021
Income Tax Disclosure [Abstract]                
Net increase in net assets resulting from operations $ 55,338 $ 14,749 $ 65,203 $ 83,956 $ 95,110 $ 57,346 $ 135,287 $ 236,413
Book-tax difference from share-based compensation expense             (3,456) (5,436)
Net unrealized (appreciation) depreciation 10,081     (38,631)     19,922 (117,072)
Income tax provision $ 2,060     $ 12,284     17,477 22,691
Pre-tax book income not consolidated for tax purposes             (28,333) (35,701)
Book income and tax income differences, including debt origination, structuring fees, dividends, realized gains and changes in estimates             24,026 6,027
Estimated taxable income             164,923 106,922
Taxable income earned in prior year and carried forward for distribution in current year             50,834 24,350
Taxable income earned prior to period end and carried forward for distribution next period             (71,128) (18,959)
Dividend payable as of period end and paid in the following period             16,789 14,553
Total distributions accrued or paid to common stockholders             $ 161,418 $ 126,866