Fair Value of Financial Instruments - Schedule of Fair Value Measurement Inputs (Details) $ in Thousands	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 916,091	$ 879,571
Corporate Securities | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 8,441
Corporate Securities | Level 3 | Measurement Input, Liquidity Premium | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range of Discounts	0.02
Municipal Securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 285,107	$ 303,773
Municipal Securities | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 25,226
Municipal Securities | Level 3 | Measurement Input, Liquidity Premium | Valuation Technique, Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Range of Discounts	0.01