v3.25.3

Fair Value - Summary of Changes in Fair Value of Level 3 Assets and Liabilities (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2025 | Dec. 31, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |
Opening balance | $ 2,086,166 |  | $ 1,956,286 |  | $ 2,110,586 |
Net realized gain (loss) | 1,344 |  | 1,721 |  | (2,068) |
Net change in unrealized gain (loss) | $ 554 |  | $ 1,759 |  | $ 1,531 |
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Net Change In Unrealized Gain Loss On Investments |  | Net Change In Unrealized Gain Loss On Investments |  | Net Change In Unrealized Gain Loss On Investments |
Purchase of investment securities | $ 280,589 | [1] | $ 814,330 | [1] | $ 479,716 | [2]
Proceeds from dispositions of investment securities | (311,936) |  | (717,379) |  | (633,479) |
Transfers in/out of Level 3 | 0 |  | 0 |  | 0 |
Closing balance | 2,056,717 |  | 2,056,717 |  | 1,956,286 |
Net change in unrealized gain (loss) | $ 698 |  | $ 4,724 |  | $ 5,687 |
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Net Change In Unrealized Gain Loss On Investments |  | Net Change In Unrealized Gain Loss On Investments |  | Net Change In Unrealized Gain Loss On Investments |
Senior Secured Loans [Member] |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |
Opening balance | $ 1,268,904 |  | $ 1,117,118 |  | $ 1,277,539 |
Net realized gain (loss) | 1,360 |  | 1,755 |  | (1,400) |
Net change in unrealized gain (loss) | (2,574) |  | (4,098) |  | (3,598) |
Purchase of investment securities | 272,045 | [1] | 791,182 | [1] | 411,598 | [2]
Proceeds from dispositions of investment securities | (288,499) |  | (654,721) |  | (567,021) |
Transfers in/out of Level 3 | 0 |  | 0 |  | 0 |
Closing balance | 1,251,236 |  | 1,251,236 |  | 1,117,118 |
Net change in unrealized gain (loss) | (2,430) |  | (1,133) |  | 1,533 |
Equipment Financing [Member] |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |
Opening balance | 138,988 |  | 181,016 |  | 256,819 |
Net realized gain (loss) | (16) |  | (34) |  | 0 |
Net change in unrealized gain (loss) | (1,844) |  | (12,183) |  | (12,646) |
Purchase of investment securities | 7,491 | [1] | 15,041 | [1] | 2,852 | [2]
Proceeds from dispositions of investment securities | (22,796) |  | (62,017) |  | (66,009) |
Transfers in/out of Level 3 | 0 |  | 0 |  | 0 |
Closing balance | 121,823 |  | 121,823 |  | 181,016 |
Net change in unrealized gain (loss) | (1,844) |  | (12,183) |  | (12,646) |
Preferred Equity [Member] |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |
Opening balance | 32,510 |  | 31,682 |  | 3,801 |
Net realized gain (loss) | 0 |  | 0 |  | 0 |
Net change in unrealized gain (loss) | (519) |  | (1,247) |  | 49 |
Purchase of investment securities | 806 | [1] | 2,362 | [1] | 27,832 | [2]
Proceeds from dispositions of investment securities | (641) |  | (641) |  | 0 |
Transfers in/out of Level 3 | 0 |  | 0 |  | 0 |
Closing balance | 32,156 |  | 32,156 |  | 31,682 |
Net change in unrealized gain (loss) | (519) |  | (1,247) |  | 49 |
Common Equity/Equity Interests/Warrants [Member] |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |
Opening balance | 645,764 |  | 626,470 |  | 572,427 |
Net realized gain (loss) | 0 |  | 0 |  | (668) |
Net change in unrealized gain (loss) | 5,491 |  | 19,287 |  | 17,726 |
Purchase of investment securities | 247 | [1] | 5,745 | [1] | 37,434 | [2]
Proceeds from dispositions of investment securities | 0 |  | 0 |  | (449) |
Transfers in/out of Level 3 | 0 |  | 0 |  | 0 |
Closing balance | 651,502 |  | 651,502 |  | 626,470 |
Net change in unrealized gain (loss) | $ 5,491 |  | $ 19,287 |  | $ 16,751 |
[1] | Includes PIK capitalization and accretion of discount.
[2] | Includes PIK capitalization and accretion of discount

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