Fair Value of Financial Instruments - Rollforward of Level 3 Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Investment gains (losses) and accretion (amortization) recognized in earnings	$ 0	$ 200	$ 0	$ 700
Fair Value, Recurring Measurements [Member]
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets, beginning of period	12,500	1,601	1,576	1,543
Net unrealized gains (losses) included in other comprehensive income (loss)	$ (55)		$ (55)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]	OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax		OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax
Investment gains (losses) and accretion (amortization) recognized in earnings		(772)	$ (885)	(714)
Purchases			12,500
Sales			(691)
Settlements		(829)		(829)
Transfers into Level 3	$ (12,445)		(12,445)
Level 3 assets, end of period	$ 0	$ 0	$ 0	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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