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Fair Value Measurements - Narrative (Details) - USD ($)
6 Months Ended
Jun. 30, 2023
Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
SBIC Investments $ 72,351,000 $ 62,227,000
Warrant    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 (36,000)  
Corporate Debt Securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 $ (8,800,000)