Fair Value Measurements - Summary of Ranges of Significant Unobservable Inputs Used to Value Level 3 Assets (Details) - Level 3 $ in Thousands	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Debt Securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities	$ 51,025	$ 48,277
Debt Securities | Redeemable Convertible Preferred Stock | Option Pricing Model | Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities	$ 51,025	$ 48,277
Debt Securities | Redeemable Convertible Preferred Stock | Option Pricing Model | Discount Rate | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities measurement input	9.82	9.82
Debt Securities | Redeemable Convertible Preferred Stock | Option Pricing Model | Discount Rate | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities measurement input	23.71	23.71
Debt Securities | Redeemable Convertible Preferred Stock | Option Pricing Model | Volatility | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities measurement input	33.5	33.5
Debt Securities | Redeemable Convertible Preferred Stock | Option Pricing Model | Volatility | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt securities measurement input	65.39	65.39
Equity Securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities	$ 24,296	$ 26,847
Equity Securities | Redeemable Convertible Preferred Stock | Measurement Alternative
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities	15,000	15,000
Equity Securities | Private Equity Securities | Measurement Alternative
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities	54	857
Equity Securities | Contribution Investment Fund | Measurement Alternative
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities	535	574
Equity Securities | Convertible Preferred Stock | Option Pricing Model | Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities	$ 8,707	$ 8,152
Equity Securities | Convertible Preferred Stock | Option Pricing Model | Discount Rate | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities measurement input	4.41	4.41
Equity Securities | Convertible Preferred Stock | Option Pricing Model | Discount Rate | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities measurement input	18.26	18.26
Equity Securities | Convertible Preferred Stock | Option Pricing Model | Volatility | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities measurement input	40.5	40.5
Equity Securities | Convertible Preferred Stock | Option Pricing Model | Volatility | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities measurement input	49.6	49.6
Equity Securities | Convertible Preferred Stock | Measurement Alternative
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities		$ 2,264