Asset coverage ratio.

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- Definition

Debenture maximum borrowing capacity.

+ References

No definition available.

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- Definition

Market-driven spread period.

+ References

No definition available.

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Description of the frequency of periodic payments (monthly, quarterly, annual).

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- Definition

Description of any adjustments made to the stated rate to determine the effective rate.

+ References

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- Definition

The average effective interest rate during the reporting period.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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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.

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Date the credit facility terminates, in YYYY-MM-DD format.

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Maximum amount borrowed under the credit facility at any time during the period.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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-Section 50
-Paragraph 1D
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1D

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-4

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Debt - Additional Information (Details) - USD ($) $ in Thousands			1 Months Ended			12 Months Ended
	Feb. 06, 2019	Feb. 05, 2019	Feb. 28, 2025	Oct. 31, 2021	Apr. 30, 2021	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Debt Instrument [Line Items]
Asset coverage ratio requirement						150.00%
Credit facility payable						$ 425,477	$ 460,361
Senior Securities
Debt Instrument [Line Items]
Asset coverage ratio requirement	150.00%	200.00%				163.00%	164.00%
Truist Credit Facility
Debt Instrument [Line Items]
Annualized weighted average cost of debt						6.50%	7.20%
Credit facility payable						$ 500,000
Outstanding borrowings						426,500	$ 461,500
Unused borrowing capacity						$ 73,500	$ 13,500
Truist Credit Facility \| SOFR
Debt Instrument [Line Items]
Basis points						235
Truist Credit Facility \| Maximum
Debt Instrument [Line Items]
Truist credit facility			$ 475,000			$ 750,000
Revolver
Debt Instrument [Line Items]
Maturity date						Jul. 29, 2027
2026 Notes
Debt Instrument [Line Items]
Aggregate principal amount of notes issued					$ 150,000
Debt instrument, interest rate					4.50%
Debt instrument, effective percentage					4.58%
Percentage of public offering price per notes issued					99.40%
Debt instrument, periodic payment					semi-annually
Debt instrument, maturity date					May 01, 2026
2026 Notes-2
Debt Instrument [Line Items]
Annualized weighted average cost of debt						6.10%	6.50%	6.00%
Aggregate principal amount of notes issued				$ 165,000
Debt instrument, interest rate				4.00%
Debt instrument, effective percentage				4.14%
Percentage of public offering price per notes issued				99.40%
Debt instrument, periodic payment				semi-annually
Debt instrument, maturity date				Nov. 01, 2026
SBA Debentures
Debt Instrument [Line Items]
Debentures outstanding						$ 0	$ 0
Market driven spread period						10 years
SBA Debentures \| SBIC
Debt Instrument [Line Items]
Maximum Borrowing Capacity						$ 175,000
SBA Debentures \| Group of SBICs
Debt Instrument [Line Items]
Maximum Borrowing Capacity						350,000
SBA Debentures \| SBIC II
Debt Instrument [Line Items]
Equity capital						$ 75,000