v3.25.4

Investments - Schedule of Investments by Industry Classification and Enumerates Percentage, by Fair Value, of Total Portfolio Assets Excluding Cash and Cash Equivalents (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Sep. 30, 2024
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Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost |  | $ 1,236,888 | [1] | $ 1,316,872 | [2],[3]
Fair Value |  | $ 1,287,273 | [1],[4] | $ 1,328,050 | [2],[3],[5]
Net Asset Value Percentage |  | (188.60%) |  | (179.00%) | [2],[3]
Business Services |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 195,614 |  | $ 205,232 |
Fair Value | [6] | $ 184,452 |  | $ 184,233 |
Fair Value Percentage | [6] | 17.00% |  | 16.00% |
Net Asset Value Percentage | [6] | 40.00% |  | 37.00% |
Healthcare, Education and Childcare |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 128,969 |  | $ 124,430 |
Fair Value | [6] | $ 168,000 |  | $ 127,574 |
Fair Value Percentage | [6] | 16.00% |  | 11.00% |
Net Asset Value Percentage | [6] | 36.00% |  | 26.00% |
Distribution |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 57,352 |  | $ 120,378 |
Fair Value | [6] | $ 130,850 |  | $ 165,304 |
Fair Value Percentage | [6] | 12.00% |  | 14.00% |
Net Asset Value Percentage | [6] | 28.00% |  | 33.00% |
Short-Term U.S. Government Securities |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 124,809 |  | $ 99,652 |
Fair Value | [6] | $ 124,788 |  | $ 99,632 |
Fair Value Percentage | [6] | 12.00% |  | 8.00% |
Net Asset Value Percentage | [6] | 27.00% |  | 20.00% |
Financial Services |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 70,403 |  | $ 69,915 |
Fair Value | [6] | $ 68,959 |  | $ 71,527 |
Fair Value Percentage | [6] | 6.00% |  | 6.00% |
Net Asset Value Percentage | [6] | 15.00% |  | 14.00% |
Consumer Products |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 53,746 |  | $ 89,773 |
Fair Value | [6] | $ 49,414 |  | $ 89,743 |
Fair Value Percentage | [6] | 5.00% |  | 8.00% |
Net Asset Value Percentage | [6] | 11.00% |  | 18.00% |
Aerospace and Defense |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 39,513 |  | $ 53,472 |
Fair Value | [6] | $ 47,113 |  | $ 54,017 |
Fair Value Percentage | [6] | 4.00% |  | 5.00% |
Net Asset Value Percentage | [6] | 10.00% |  | 11.00% |
Environmental Services |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 61,588 |  | $ 51,402 |
Fair Value | [6] | $ 31,238 |  | $ 44,290 |
Fair Value Percentage | [6] | 3.00% |  | 4.00% |
Net Asset Value Percentage | [6] | 7.00% |  | 9.00% |
Auto Sector |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 26,621 |  | $ 39,449 |
Fair Value | [6] | $ 27,826 |  | $ 40,752 |
Fair Value Percentage | [6] | 2.00% |  | 4.00% |
Net Asset Value Percentage | [6] | 6.00% |  | 8.00% |
Personal, Food and Miscellaneous Services |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 16,207 |  | $ 17,203 |
Fair Value | [6] | $ 18,769 |  | $ 18,850 |
Fair Value Percentage | [6] | 2.00% |  | 2.00% |
Net Asset Value Percentage | [6] | 4.00% |  | 4.00% |
Media |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 17,477 |  | $ 31,964 |
Fair Value | [6] | $ 17,434 |  | $ 32,130 |
Fair Value Percentage | [6] | 2.00% |  | 3.00% |
Net Asset Value Percentage | [6] | 4.00% |  | 7.00% |
Gaming |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 22,853 |  | $ 0 |
Fair Value | [6] | $ 23,151 |  | $ 0 |
Fair Value Percentage | [6] | 2.00% |  | 0.00% |
Net Asset Value Percentage | [6] | 5.00% |  | 0.00% |
Telecommunications |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 22,305 |  | $ 35,986 |
Fair Value | [6] | $ 13,695 |  | $ 34,045 |
Fair Value Percentage | [6] | 1.00% |  | 3.00% |
Net Asset Value Percentage | [6] | 3.00% |  | 7.00% |
Diversified Conglomerate Service |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 17,268 |  | $ 10,091 |
Fair Value | [6] | $ 16,416 |  | $ 9,834 |
Fair Value Percentage | [6] | 1.00% |  | 1.00% |
Net Asset Value Percentage | [6] | 4.00% |  | 2.00% |
Consumer Services |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 19,067 |  | $ 8,700 |
Fair Value | [6] | $ 19,319 |  | $ 8,449 |
Fair Value Percentage | [6] | 2.00% |  | 1.00% |
Net Asset Value Percentage | [6] | 4.00% |  | 2.00% |
Manufacturing / Basic Industries |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 42,601 |  | $ 12,686 |
Fair Value | [6] | $ 43,067 |  | $ 12,713 |
Fair Value Percentage | [6] | 4.00% |  | 1.00% |
Net Asset Value Percentage | [6] | 9.00% |  | 3.00% |
Buildings and Real Estate |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 12,546 |  | $ 12,515 |
Fair Value | [6] | $ 12,495 |  | $ 12,442 |
Fair Value Percentage | [6] | 1.00% |  | 1.00% |
Net Asset Value Percentage | [6] | 3.00% |  | 3.00% |
Chemicals, Plastics and Rubber |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 15,237 |  | $ 32,255 |
Fair Value | [6] | $ 12,240 |  | $ 31,598 |
Fair Value Percentage | [6] | 1.00% |  | 3.00% |
Net Asset Value Percentage | [6] | 3.00% |  | 6.00% |
Event Services |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 11,823 |  | $ 0 |
Fair Value | [6] | $ 12,073 |  | $ 0 |
Fair Value Percentage | [6] | 1.00% |  | 0.00% |
Net Asset Value Percentage | [6] | 3.00% |  | 0.00% |
Home and Office Furnishings, Housewares and Durable Consumer Products [Member] |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 9,258 |  | $ 9,663 |
Fair Value | [6] | $ 9,723 |  | $ 9,663 |
Fair Value Percentage | [6] | 1.00% |  | 1.00% |
Net Asset Value Percentage | [6] | 2.00% |  | 2.00% |
Electronics |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 2,507 |  | $ 14,887 |
Fair Value | [6] | $ 5,485 |  | $ 19,633 |
Fair Value Percentage | [6] | 1.00% |  | 2.00% |
Net Asset Value Percentage | [6] | 1.00% |  | 4.00% |
Consulting Services |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 5,970 |  | $ 0 |
Fair Value | [6] | $ 5,966 |  | $ 0 |
Fair Value Percentage | [6] | 1.00% |  | 0.00% |
Net Asset Value Percentage | [6] | 1.00% |  | 0.00% |
Other |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 40,509 |  | $ 93,898 |
Fair Value | [6] | $ 37,000 |  | $ 77,812 |
Fair Value Percentage | [6] | 3.00% |  | 7.00% |
Net Asset Value Percentage | [6] | 8.00% |  | 16.00% |
Total Industry [Member] |  |  |  |  |
Schedule Of Investment Income Reported Amounts By Category [Line Items] |  |  |  |  |
Cost | [6] | $ 1,014,243 |  | $ 1,133,551 |
Fair Value | [6] | $ 1,079,473 |  | $ 1,144,241 |
Fair Value Percentage | [6] | 100.00% |  | 100.00% |
Net Asset Value Percentage | [6] | 234.00% |  | 232.00% |
[1] | All investments are in US Companies unless noted otherwise. Total cost, fair value, and percentage of Net Assets for the U.S. Companies were $1,181.8 million, $1,198.6 million, and 258.4%
[2] | The provisions of the 1940 Act classify investments based on the level of control that we maintain in a particular portfolio company. As defined in the 1940 Act, a company is generally presumed to be “non-controlled” when we own 25% or less of the portfolio company’s voting securities and “controlled” when we own more than 25% of the portfolio company’s voting securities.
[3] | The provisions of the 1940 Act classify investments further based on the level of ownership that we maintain in a particular portfolio company. As defined in the 1940 Act, a company is generally deemed as “non-affiliated” when we own less than 5% of a portfolio company’s voting securities and “affiliated” when we own 5% or more of a portfolio company’s voting securities (See Note 6).
[4] | Valued based on our accounting policy (See Note 2).
[5] | Valued based on our accounting policy (See Note 2).
[6] | Excludes investments in PSLF.

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