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Securities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Realized losses	$ 110	$ 697
Equity investments	103,201		$ 100,163
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized cost	77,400
Fair value	72,900
State, municipal, and sovereign debt obligations
Debt Securities, Available-for-sale [Line Items]
Amortized cost	60,800
Fair value	59,000
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized cost	289,600
Fair value	$ 288,100

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Equity Investments

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Amortized cost, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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