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Unsecured Notes Payable - Narrative (Details) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2025 USD ($) series $ / shares	Sep. 30, 2025 USD ($) series $ / shares	Sep. 30, 2025 USD ($) series $ / shares	Sep. 30, 2024 USD ($)
Unsecured Notes Payable
Notes issued denomination (in dollars per share) | $ / shares	$ 25.00	$ 25.00	$ 25.00
Repayment of notes payable			$ 56,845	$ 23,647
Gain on extinguishment of debt			140	$ 0
Unsecured Debt
Unsecured Notes Payable
Aggregate amount outstanding	$ 173,254	$ 173,254	173,254
Repayment of notes payable		500
Loans repurchase and cancelled	600	600	600
Gain on extinguishment of debt		100
Unsecured Debt | Notes
Unsecured Notes Payable
Aggregate amount outstanding	$ 173,300	$ 173,300	$ 173,300
Number of notes series outstanding | series	4	4	4
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
Unsecured Debt | December 2026 Notes
Unsecured Notes Payable
Aggregate amount outstanding	$ 51,700	$ 51,700	$ 51,700
Fixed annual rate	6.00%	6.00%	6.00%
Unsecured Debt | March 2027 Notes
Unsecured Notes Payable
Aggregate amount outstanding	$ 51,800	$ 51,800	$ 51,800
Fixed annual rate	6.00%	6.00%	6.00%
Unsecured Debt | June 2027 Notes
Unsecured Notes Payable
Aggregate amount outstanding	$ 29,700	$ 29,700	$ 29,700
Fixed annual rate	7.125%	7.125%	7.125%
Unsecured Debt | September 2027 Notes
Unsecured Notes Payable
Aggregate amount outstanding	$ 40,100	$ 40,100	$ 40,100
Fixed annual rate	8.00%	8.00%	8.00%
Unsecured Debt | September 2025 Notes
Unsecured Notes Payable
Fixed annual rate	7.75%	7.75%	7.75%
Repayment of notes payable	$ 56,300

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- Definition

Face amount of per share of notes issued.

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- Definition

Number Of Notes Series Outstanding

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- Definition

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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- Definition

The percentage of threshold asset coverage ratio.

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- Definition

The percentage of taxable income to prohibit distribution.

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- Definition

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.

+ References

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- Definition

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

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Fair value amount of debt instrument that was repurchased.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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