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Fair Value of Assets and Liabilities - Narrative (Details) - security
Sep. 30, 2023
Dec. 31, 2022
Fair Value, Inputs, Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Fair value measurement, number of debt securities 2 2
Fair Value, Inputs, Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Fair value measurement, number of debt securities 4 4