Fair Value - Additional Information (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
SLRCTerm Loan And Credit Facility [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt Instrument, Fair Value Disclosure	$ 552,109	$ 505,386
SPV Credit Facility [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt Instrument, Fair Value Disclosure	124,050	165,050
2026 Unsecured Notes [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt Instrument, Fair Value Disclosure	74,250	73,875
2027 Unsecured Notes [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt Instrument, Fair Value Disclosure	48,875	48,250
2027 Series F Unsecured Notes [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt Instrument, Fair Value Disclosure	132,975	131,625
2027 Series G Unsecured Notes [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt Instrument, Fair Value Disclosure	49,000	49,368
2028 Series H Unsecured Notes [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt Instrument, Fair Value Disclosure	49,875	50,250
2028 Series I Unsecured Notes [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt Instrument, Fair Value Disclosure	49,625	50,000
2028 Series J Unsecured Notes [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt Instrument, Fair Value Disclosure	$ 74,438	$ 75,000