Unsecured Notes Payable (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
Jun. 30, 2024	Dec. 31, 2023
Unsecured Notes Payable
Deferred financing costs	$ 4,826	$ 6,048
Notes issued denomination	$ 25.00
Threshold percentage of taxable income to prohibit distribution	90.00%
Threshold asset coverage ratio	150.00%
Period of written notice to redeem notes without premium or penalty	30 days
Notes
Unsecured Notes Payable
Aggregate amount outstanding	$ 259,900
Deferred financing costs	4,800
June 2024 Notes
Unsecured Notes Payable
Aggregate amount outstanding	$ 23,700
Fixed annual rate	7.125%
December 2024 Notes
Unsecured Notes Payable
Aggregate amount outstanding	$ 34,500
Fixed annual rate	6.875%
September 2025 Notes
Unsecured Notes Payable
Aggregate amount outstanding	$ 56,400
Fixed annual rate	7.75%
Notes issued denomination	$ 24.75
Principal amount	$ 28,000
December 2026 Notes
Unsecured Notes Payable
Aggregate amount outstanding	$ 51,800
Fixed annual rate	6.00%
March 2027 Notes
Unsecured Notes Payable
Aggregate amount outstanding	$ 51,900
Fixed annual rate	6.00%
June 2027 Notes
Unsecured Notes Payable
Aggregate amount outstanding	$ 30,000
Fixed annual rate	7.125%
September 2027 Notes
Unsecured Notes Payable
Aggregate amount outstanding	$ 40,300
Fixed annual rate	8.00%

Face amount of per share of notes issued.

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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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Period of written notice to redeem notes without premium or penalty for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The percentage of threshold asset coverage ratio.

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The percentage of taxable income to prohibit distribution.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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

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