Consolidated Statements of Assets and Liabilities - USD ($) $ in Thousands |
Mar. 31, 2026 |
Sep. 30, 2025 |
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| Investments at fair value | ||||||||||||||||||||||||||
| Non-controlled, non-affiliated investments | $ 2,580,281 | [1],[2],[3],[4],[5] | $ 2,773,328 | [6],[7],[8],[9],[10] | ||||||||||||||||||||||
| Cash equivalents (cost- $31,427 and $40,729, respectively) | 31,427 | 40,729 | ||||||||||||||||||||||||
| Cash (cost- $55,121 and $81,955, respectively) | 90,444 | [3],[4],[5] | 81,959 | [8],[9],[10] | ||||||||||||||||||||||
| Interest receivable | 12,611 | 13,832 | ||||||||||||||||||||||||
| Distributions receivable | 900 | 0 | ||||||||||||||||||||||||
| Receivable for investments sold | 30,052 | 1,369 | ||||||||||||||||||||||||
| Prepaid expenses and other assets | 2,085 | 2,143 | ||||||||||||||||||||||||
| Total assets | 2,747,936 | 2,913,681 | ||||||||||||||||||||||||
| Liabilities | ||||||||||||||||||||||||||
| Credit Facility payable, at fair value (cost - $328,355 and $683,855, respectively) | 328,333 | 683,837 | ||||||||||||||||||||||||
| Payable for investments purchased | 0 | 14,852 | ||||||||||||||||||||||||
| Interest payable on debt | 15,407 | 19,172 | ||||||||||||||||||||||||
| Distributions payable | 10,170 | 10,170 | ||||||||||||||||||||||||
| Base management fee payable | 6,427 | 6,549 | ||||||||||||||||||||||||
| Incentive fee payable | 6,437 | 6,883 | ||||||||||||||||||||||||
| Accounts payable and accrued expenses | 1,581 | 2,166 | ||||||||||||||||||||||||
| Deferred tax liability | 1,558 | 1,864 | ||||||||||||||||||||||||
| Total liabilities | 1,709,279 | 1,839,165 | ||||||||||||||||||||||||
| Commitments and contingencies (See Note 11) | ||||||||||||||||||||||||||
| Net assets | ||||||||||||||||||||||||||
| Common stock, 99,217,896 and 99,217,896 shares issued and outstanding, respectively Par value $0.001 per share and 200,000,000 shares authorized | 99 | 99 | ||||||||||||||||||||||||
| Paid-in capital in excess of par value | 1,219,502 | 1,219,502 | ||||||||||||||||||||||||
| Accumulated deficit | (180,944) | (145,085) | ||||||||||||||||||||||||
| Total net assets | 1,038,657 | 1,074,516 | ||||||||||||||||||||||||
| Total liabilities and net assets | $ 2,747,936 | $ 2,913,681 | ||||||||||||||||||||||||
| Net asset value per share | $ 10.47 | [11] | $ 10.83 | |||||||||||||||||||||||
| Affiliated Entity | ||||||||||||||||||||||||||
| Investments at fair value | ||||||||||||||||||||||||||
| Due from affiliates | $ 136 | $ 321 | ||||||||||||||||||||||||
| Liabilities | ||||||||||||||||||||||||||
| Due to affiliates | 0 | 739 | ||||||||||||||||||||||||
| 2036 Asset-Backed Debt | ||||||||||||||||||||||||||
| Liabilities | ||||||||||||||||||||||||||
| Asset-Backed Debt, net | 0 | 284,627 | ||||||||||||||||||||||||
| 2036-R Asset-Backed Debt | ||||||||||||||||||||||||||
| Liabilities | ||||||||||||||||||||||||||
| Asset-Backed Debt, net | 286,585 | 265,366 | ||||||||||||||||||||||||
| 2037 Asset-Backed Debt | ||||||||||||||||||||||||||
| Liabilities | ||||||||||||||||||||||||||
| Asset-Backed Debt, net | 387,145 | 358,331 | ||||||||||||||||||||||||
| 2038-R Asset-Backed Debt | ||||||||||||||||||||||||||
| Liabilities | ||||||||||||||||||||||||||
| Asset-Backed Debt, net | 284,770 | 0 | ||||||||||||||||||||||||
| 2026 Notes Payable | ||||||||||||||||||||||||||
| Liabilities | ||||||||||||||||||||||||||
| Notes payable, net | 184,998 | 184,609 | ||||||||||||||||||||||||
| 2029 Notes Payable | ||||||||||||||||||||||||||
| Liabilities | ||||||||||||||||||||||||||
| Notes payable, net | 195,868 | 0 | ||||||||||||||||||||||||
| Non-controlled, Non-affiliated Investments | ||||||||||||||||||||||||||
| Investments at fair value | ||||||||||||||||||||||||||
| Non-controlled, non-affiliated investments | 2,189,011 | [3],[4],[5] | 2,491,360 | [8],[9],[10] | ||||||||||||||||||||||
| Controlled, affiliated investments | ||||||||||||||||||||||||||
| Investments at fair value | ||||||||||||||||||||||||||
| Non-controlled, non-affiliated investments | $ 391,270 | [3],[4],[5] | $ 281,968 | [8],[9],[10] | ||||||||||||||||||||||
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- Definition Asset backed debt net. No definition available.
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- Definition Distributions receivable. No definition available.
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- Definition Payable for investments purchased. No definition available.
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- Definition Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of distribution payable to ownership interest holder from investment income and return of capital. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of fee payable for management of operations based on performance under arrangement, including, but not limited to, investment. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of interest payable on debt, including, but not limited to, trade payables. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Fair value of investment in security owned. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of liability recognized for present obligation requiring transfer or otherwise providing economic benefit to others. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle) and amount due to the Entity from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such investments and receivables to an amount that approximates their net realizable value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of fee payable for management of fund or trust. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Net asset value per share or per unit of investments in certain entities that calculate net asset value per share. Includes, but is not limited to, by unit, membership interest, or other ownership interest. Investment includes, but is not limited to, investment in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. Excludes fair value disclosure. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of expenses incurred but not yet paid classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of liabilities classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount due from parties in nontrade transactions, classified as other. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets. No definition available.
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- Definition Amount of accumulated undistributed earnings (deficit). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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