XML 49 R43.htm IDEA: XBRL DOCUMENT v3.24.0.1
Fair Value of Financial Instruments - Reconciliation of Investments Measured at Fair Value Using Significant Unobservable Inputs Level 3 (Details) - USD ($)
$ in Thousands
3 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]    
Net change in unrealized depreciation/appreciation Net change in unrealized appreciation (depreciation) on investments  
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net change in unrealized appreciation (depreciation) on investments and debt  
Level 3    
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]    
Beginning Balance $ 1,006,948 $ 1,104,927
Net realized gain (loss) (3,089) (63)
Net change in unrealized depreciation/appreciation (4,620) 10,845
Purchases, PIK interest, net discount accretion and non-cash exchanges 307,198 62,667
Sales, repayments and non-cash exchanges (106,508) (62,998)
Ending Balance 1,209,169 1,093,814
Net change in unrealized depreciation reported within the net change in unrealized depreciation on investments in our Consolidated Statements of Operations attributable to our Level 3 assets still held at the reporting date. (0) 8,198
First lien | Level 3    
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]    
Beginning Balance 906,166 1,009,642
Net realized gain (loss) (4,304) 50
Net change in unrealized depreciation/appreciation 5,478 (7,399)
Purchases, PIK interest, net discount accretion and non-cash exchanges 288,248 58,636
Sales, repayments and non-cash exchanges (105,124) (62,720)
Ending Balance 1,090,464 998,209
Net change in unrealized depreciation reported within the net change in unrealized depreciation on investments in our Consolidated Statements of Operations attributable to our Level 3 assets still held at the reporting date. (1,085) 4,830
Second Lien, Subordinated Debt and Equity Investments | Level 3    
Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]    
Beginning Balance 100,782 95,285
Net realized gain (loss) 1,215 (13)
Net change in unrealized depreciation/appreciation (858) 3,446
Purchases, PIK interest, net discount accretion and non-cash exchanges 18,950 4,031
Sales, repayments and non-cash exchanges (1,384) (278)
Ending Balance 118,705 95,605
Net change in unrealized depreciation reported within the net change in unrealized depreciation on investments in our Consolidated Statements of Operations attributable to our Level 3 assets still held at the reporting date. $ 295 $ 3,368