Financing Arrangements - 2026 Notes Narrative (Details) - 2026 Notes - Unsecured Debt - USD ($) $ in Thousands	Feb. 11, 2021	Sep. 30, 2026
Line of Credit Facility [Line Items]
Debt instrument, aggregate principal amount	$ 125,000
Interest rate (as a percent)	4.50%
Proceeds from issuance of long-term debt	$ 122,300
Debt instrument, redemption, minimum threshold (as a percent)	10.00%
Minimum shareholders' equity, amount of net asset value	$ 543,600
Minimum asset coverage ratio (as a percent)	150.00%
Minimum interest coverage ratio	1.25
Unencumbered asset coverage ratio	1.25
Percentage of secured loans and cash of total unencumbered assets (as a percent)	65.00%
Percentage of equity interests of total unencumbered assets (as a percent)	15.00%
Unsecured credit facilities, loans or indebtedness in excess	$ 25,000
Minimum threshold of principal amount subject to evens of default	$ 25,000
Debt issuance costs		$ 2,669
After August 11, 2025
Line of Credit Facility [Line Items]
Debt instrument, redemption price, percentage of principal amount redeemed (as a percent)	100.00%

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Debt Instrument, Covenant, Minimum Asset Coverage Ratio

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Debt Instrument, Covenant, Minimum Interest Coverage Ratio

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Debt Instrument, Covenant, Minimum Shareholders' Equity, Amount Of Net Asset Value

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Debt Instrument, Covenant, Percentage Of Equity Interests Of Total Unencumbered Assets

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Debt Instrument, Covenant, Percentage Of Secured Loans And Cash Of Total Unencumbered Assets

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Debt Instrument, Covenant, Unencumbered Asset Coverage Ratio

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Debt Instrument, Redemption, Minimum Threshold Percentage

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Face (par) amount of debt instrument at time of issuance.

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

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Percentage of principal amount of debt redeemed.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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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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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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