Quarterly report pursuant to Section 13 or 15(d)

DEBT - Schedule of Debt (Details)

v3.24.3
DEBT - Schedule of Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
Debt Instrument [Line Items]      
Outstanding Balance $ 2,210,000   $ 1,810,000
Unamortized Debt Issuance (Costs)/ Premiums (10,510)   (7,656)
Recorded Value 2,199,490   1,802,344
Estimated Fair Value 2,151,533   1,704,974
July 2026 Notes | Unsecured Notes      
Debt Instrument [Line Items]      
Outstanding Balance 500,000   500,000
Unamortized Debt Issuance (Costs)/ Premiums (943)   (1,338)
Recorded Value 499,057   498,662
Estimated Fair Value 479,325   458,105
June 2027 Notes | Unsecured Notes      
Debt Instrument [Line Items]      
Outstanding Balance 400,000    
Unamortized Debt Issuance (Costs)/ Premiums 1,136    
Recorded Value 401,136   0
Estimated Fair Value 409,260    
March 2029 Notes | Unsecured Notes      
Debt Instrument [Line Items]      
Outstanding Balance 350,000    
Unamortized Debt Issuance (Costs)/ Premiums (3,178)    
Recorded Value 346,822   0
Estimated Fair Value 365,862    
May 2024 Notes | Unsecured Notes      
Debt Instrument [Line Items]      
Outstanding Balance     450,000
Unamortized Debt Issuance (Costs)/ Premiums     182
Recorded Value 0   450,182
Estimated Fair Value     447,246
SBIC Debentures | Unsecured Notes      
Debt Instrument [Line Items]      
Outstanding Balance 350,000 $ 286,200 350,000
Unamortized Debt Issuance (Costs)/ Premiums (6,878)   (5,465)
Recorded Value 343,122   344,535
Estimated Fair Value 285,982   288,468
December 2025 Notes | Unsecured Notes      
Debt Instrument [Line Items]      
Outstanding Balance 150,000   150,000
Unamortized Debt Issuance (Costs)/ Premiums (647)   (1,035)
Recorded Value 149,353   148,965
Estimated Fair Value 151,104   151,155
Credit Facility | Line of Credit      
Debt Instrument [Line Items]      
Recorded Value 460,000   360,000
Credit Facility | Corporate Facility | Line of Credit      
Debt Instrument [Line Items]      
Outstanding Balance 300,000   200,000
Unamortized Debt Issuance (Costs)/ Premiums 0   0
Recorded Value 300,000   200,000
Estimated Fair Value 300,000   200,000
Credit Facility | SPV Facility | Line of Credit      
Debt Instrument [Line Items]      
Outstanding Balance 160,000   160,000
Unamortized Debt Issuance (Costs)/ Premiums 0   0
Recorded Value 160,000   160,000
Estimated Fair Value $ 160,000   $ 160,000