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Investments - Summary of Information Relating to Investments Measured at Fair Value for Company has Used Unobservable Inputs to Determine Fair Value (Details) - USD ($) $ in Thousands | 9 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Beginning balance |  | $ 363,883 | $ 357,528
Transfers in from the LRFC Acquisition | [1],[2] | 150,430 |
Transfers out of Level III | [3] |  | (7,018)
Transfers into Level III | [4] |  | 4,514
Net accretion |  | 6,122 | 2,989
Purchases |  | 49,490 | 61,526
Sales/Paydowns/Return of Capital |  | (68,345) | (56,970)
Total realized gain (loss) included in earnings |  | (17,296) | (8,340)
Change in unrealized gain (loss) included in earnings |  | 19,835 | (2,997)
Ending balance |  | 504,119 | 351,232
Changes in unrealized gains (losses) included in earnings related to investments still held at reporting date |  | 581 | (8,547)
First Lien Debt |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Beginning balance |  | 289,957 | 289,295
Transfers in from the LRFC Acquisition | [1],[2] | 106,595 |
Transfers out of Level III | [3] |  | (7,018)
Transfers into Level III | [4] |  | 4,514
Net accretion |  | 4,939 | 1,624
Purchases |  | 45,631 | 53,697
Sales/Paydowns/Return of Capital |  | (63,601) | (48,790)
Total realized gain (loss) included in earnings |  | (9,121) | (1,312)
Change in unrealized gain (loss) included in earnings |  | 12,003 | (5,466)
Ending balance |  | 386,403 | 286,544
Changes in unrealized gains (losses) included in earnings related to investments still held at reporting date |  | 3,146 | (4,316)
Second Lien Debt |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Beginning balance |  | 28,996 | 23,232
Transfers in from the LRFC Acquisition | [1],[2] | 8,558 |
Net accretion |  | 333 | 30
Purchases |  | 1,280 | 1,165
Sales/Paydowns/Return of Capital |  | (509) | (3,961)
Total realized gain (loss) included in earnings |  | (46) | (3)
Change in unrealized gain (loss) included in earnings |  | 382 | (148)
Ending balance |  | (38,994) | 20,315
Changes in unrealized gains (losses) included in earnings related to investments still held at reporting date |  | (2,044) | (150)
Subordinated Debt |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Beginning balance |  | 1,740 | 1,225
Transfers in from the LRFC Acquisition | [1],[2] | 20,207 |
Net accretion |  | 479 |
Purchases |  |  | 944
Sales/Paydowns/Return of Capital |  | (26) | (459)
Total realized gain (loss) included in earnings |  | (1,931) | (419)
Change in unrealized gain (loss) included in earnings |  | 4,363 | 405
Ending balance |  | 24,832 | 1,696
Changes in unrealized gains (losses) included in earnings related to investments still held at reporting date |  | 2,405 | 33
Equity |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Beginning balance |  | 24,762 | 20,533
Transfers in from the LRFC Acquisition | [1],[2] | 14,521 |
Purchases |  | 2,579 | 5,720
Sales/Paydowns/Return of Capital |  | (1,033) | (864)
Total realized gain (loss) included in earnings |  | (3,764) | (5,364)
Change in unrealized gain (loss) included in earnings |  | 3,728 | 2,854
Ending balance |  | 40,793 | 22,879
Changes in unrealized gains (losses) included in earnings related to investments still held at reporting date |  | (534) | (3,471)
Collateralized Loan Obligations |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Beginning balance |  | 5,193 | 8,968
Transfers in from the LRFC Acquisition | [1],[2] | 549 |
Net accretion |  | 371 | 1,335
Sales/Paydowns/Return of Capital |  | (2,420) | (1,316)
Total realized gain (loss) included in earnings |  | (2,434) | (1,242)
Change in unrealized gain (loss) included in earnings |  | 920 | (959)
Ending balance |  | 2,179 | 6,786
Changes in unrealized gains (losses) included in earnings related to investments still held at reporting date |  | 923 | (960)
Joint Ventures |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Beginning balance |  | 13,015 | 14,275
Sales/Paydowns/Return of Capital |  | (756) | (1,580)
Change in unrealized gain (loss) included in earnings |  | (1,540) | 317
Ending balance |  | 10,719 | 13,012
Changes in unrealized gains (losses) included in earnings related to investments still held at reporting date |  | (3,294) | $ 317
Derivatives |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Beginning balance |  | 220 |
Change in unrealized gain (loss) included in earnings |  | (21) |
Ending balance |  | 199 |
Changes in unrealized gains (losses) included in earnings related to investments still held at reporting date |  | $ (21) |
[1] | Represents the cost basis of investments acquired through the LRFC Acquisition on July 15, 2025, inclusive of the purchase discount.
[2] | Transfers into Level III represent a transfer of $150.4 million relating to securities acquired as a part of the LRFC Acquisition for which pricing inputs, other than their quoted prices in active markets, were unobservable as of September 30, 2025.
[3] | Transfers out of Level III represent a transfer of $7.0 million relating to debt securities for which pricing inputs, other than their quoted prices in active markets, were observable as of September 30, 2024.
[4] | Transfers into Level III represent a transfer of $4.5 million relating to debt securities for which pricing inputs, other than their quoted prices in active markets, were unobservable as of September 30, 2024.

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