v3.26.1
Fair Value Measurements - Schedule of Changes in Level 3 Portfolio (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Total Investments        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Fair value, beginning of period $ 1,938,405 $ 1,123,739 $ 1,864,205 $ 816,313
Purchases of investments 104,172 259,510 289,166 569,942
Principal repayments and sales of investments (25,683) (62,087) (134,729) (69,992)
Transfers in 2,222 1,554 4,020 1,075
Transfers out (33,399) (649) (33,864) (1,110)
Fair value, end of period 1,987,334 1,330,652 1,987,334 1,330,652
Net change in unrealized appreciation (depreciation) related to financial instruments still held as of June 30, 2026 (632) 7,830 (7,208) 12,163
Net transfers (31,200)   (30,700)  
Total Investments | Income Statement Location [Axis]: us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 2,247 1,641 5,405 2,823
Total Investments | Income Statement Location [Axis]: us-gaap:RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingAfterTax        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 513 (228) 2,608 (227)
Total Investments | Income Statement Location [Axis]: us-gaap:UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingAfterTax        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings (1,143) 7,172 (9,477) 11,828
First Lien Debt        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Fair value, beginning of period 1,492,185 1,004,807 1,481,458 701,826
Purchases of investments 63,777 168,535 172,725 475,625
Principal repayments and sales of investments (23,348) (55,426) (112,687) (61,665)
Transfers in 0 1,554 891 1,075
Transfers out (5,404) (613) (5,702) 0
Fair value, end of period 1,517,444 1,123,989 1,517,444 1,123,989
Net change in unrealized appreciation (depreciation) related to financial instruments still held as of June 30, 2026 (11,800) 4,443 (23,886) 5,001
First Lien Debt | Income Statement Location [Axis]: us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 2,097 1,575 5,029 2,689
First Lien Debt | Income Statement Location [Axis]: us-gaap:RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingAfterTax        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 449 (228) 1,510 (227)
First Lien Debt | Income Statement Location [Axis]: us-gaap:UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingAfterTax        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings (12,312) 3,785 (25,780) 4,666
Investments in second lien debt        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Fair value, beginning of period 7,982 4,314 7,906 5,329
Purchases of investments 2,092 59 2,188 115
Principal repayments and sales of investments 0 0 0 0
Transfers in 0 0 0 0
Transfers out 0 0 0 (1,075)
Fair value, end of period 10,045 4,373 10,045 4,373
Net change in unrealized appreciation (depreciation) related to financial instruments still held as of June 30, 2026 (35) (3) (60) (2)
Investments in second lien debt | Income Statement Location [Axis]: us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 6 3 11 6
Investments in second lien debt | Income Statement Location [Axis]: us-gaap:RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingAfterTax        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 0 0 0 0
Investments in second lien debt | Income Statement Location [Axis]: us-gaap:UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingAfterTax        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings (35) (3) (60) (2)
Investments in other secured debt        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Fair value, beginning of period 74,116 18,307 64,380 17,960
Purchases of investments 7,312 307 33,655 2,253
Principal repayments and sales of investments (1,997) (1,667) (19,802) (3,333)
Transfers in 0 0 907 0
Transfers out 0 0 0 0
Fair value, end of period 79,396 16,950 79,396 16,950
Net change in unrealized appreciation (depreciation) related to financial instruments still held as of June 30, 2026 (166) (45) (542) (29)
Net transfers     3,100  
Investments in other secured debt | Income Statement Location [Axis]: us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 131 48 340 99
Investments in other secured debt | Income Statement Location [Axis]: us-gaap:RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingAfterTax        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 0 0 824 0
Investments in other secured debt | Income Statement Location [Axis]: us-gaap:UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingAfterTax        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings (166) (45) (908) (29)
Unsecured debt        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Fair value, beginning of period 48,633 17,971 48,111 17,385
Purchases of investments 6,949 609 7,618 1,192
Principal repayments and sales of investments 0 0 0 0
Transfers in 0 0 0 0
Transfers out (27,995) 0 (28,162) 0
Fair value, end of period 27,552 18,271 27,552 18,271
Net change in unrealized appreciation (depreciation) related to financial instruments still held as of June 30, 2026 (48) (322) (40) (331)
Unsecured debt | Income Statement Location [Axis]: us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 13 13 25 25
Unsecured debt | Income Statement Location [Axis]: us-gaap:RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingAfterTax        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 0 0 0 0
Unsecured debt | Income Statement Location [Axis]: us-gaap:UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingAfterTax        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings (48) (322) (40) (331)
Structured Finance        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Fair value, beginning of period 18,944 0 17,206 0
Purchases of investments 19,140 83 20,949 83
Principal repayments and sales of investments 0 0 0 0
Transfers in 0 0 0 0
Transfers out 0 0 0 0
Fair value, end of period 39,466 83 39,466 83
Net change in unrealized appreciation (depreciation) related to financial instruments still held as of June 30, 2026 1,382 0 1,311 0
Structured Finance | Income Statement Location [Axis]: us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 0 0 0 0
Structured Finance | Income Statement Location [Axis]: us-gaap:RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingAfterTax        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 0 0 0 0
Structured Finance | Income Statement Location [Axis]: us-gaap:UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingAfterTax        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 1,382 0 1,311 0
Preferred equity        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Fair value, beginning of period 246,909 31,187 196,010 28,588
Purchases of investments 4,490 89,630 51,352 90,375
Principal repayments and sales of investments (161) 0 (2,063) 0
Transfers in 2,222 0 2,222 0
Transfers out 0 0 0 0
Fair value, end of period 262,887 124,026 262,887 124,026
Net change in unrealized appreciation (depreciation) related to financial instruments still held as of June 30, 2026 9,426 3,207 15,165 5,059
Preferred equity | Income Statement Location [Axis]: us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 0 2 0 4
Preferred equity | Income Statement Location [Axis]: us-gaap:RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingAfterTax        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 0 0 210 0
Preferred equity | Income Statement Location [Axis]: us-gaap:UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingAfterTax        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 9,427 3,207 15,156 5,059
Other equity investments        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Fair value, beginning of period 49,636 47,153 49,134 45,225
Purchases of investments 412 287 679 299
Principal repayments and sales of investments (177) (4,994) (177) (4,994)
Transfers in 0 0 0 0
Transfers out 0 (36) 0 (35)
Fair value, end of period 50,544 42,960 50,544 42,960
Net change in unrealized appreciation (depreciation) related to financial instruments still held as of June 30, 2026 609 550 844 2,465
Other equity investments | Income Statement Location [Axis]: us-gaap:AccretionAmortizationOfDiscountsAndPremiumsInvestments        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 0 0 0 0
Other equity investments | Income Statement Location [Axis]: us-gaap:RealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingAfterTax        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings 64 0 64 0
Other equity investments | Income Statement Location [Axis]: us-gaap:UnrealizedGainLossInvestmentDerivativeAndForeignCurrencyTransactionPriceChangeOperatingAfterTax        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Gain (loss) included in earnings $ 609 $ 550 $ 844 $ 2,465