May 2024 Notes [Member] May 2024 Notes Debt Outstanding Increase Risk [Member] Debt Outstanding Increase Risk DTC Procedures Risk [Member] DTC Procedures Risk No Active Trading Market For The Notes Risk [Member] No Active Trading Market For The Notes Risk SPV Facility [Member] SPV Facility Unsecured Notes Risk [Member] Unsecured Notes Risk Limited Protection Risk [Member] Limited Protection Risk Optional Redemption Provision Risk [Member] Optional Redemption Provision Risk July 2026 Notes [Member] July 2026 Notes Change Of Control Repurchase Event Risk [Member] Change Of Control Repurchase Event Risk Debt Instrument, Name [Domain] Corporate Facility [Member] Corporate Facility Investment Risk [Member] Investment Risk Credit Rating Risk [Member] Credit Rating Risk SBIC Debentures [Member] SBIC Debentures Subordinated To Indebtedness And Liabilities Of Subsidiaries Risk [Member] Subordinated To Indebtedness And Liabilities Of Subsidiaries Risk