Investments - Available-for-sale securities, Unrealized Loss (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Debt Securities, Available-for-sale, Unrealized Loss Position
Fair Value of Investments with Unrealized Losses, Less than 12 months	$ 433,615
Gross Unrealized Losses, Less than 12 months	(4,385)
Fair Value of Investments with Unrealized Losses,12 months or greater	385,825
Gross Unrealized Losses, 12 months or greater	(21,818)
Fair Value of Investments with Unrealized Losses	819,440
Gross Unrealized Losses	(26,202)
Corporate bonds
Debt Securities, Available-for-sale, Unrealized Loss Position
Fair Value of Investments with Unrealized Losses, Less than 12 months	433,615
Gross Unrealized Losses, Less than 12 months	(4,385)
Fair Value of Investments with Unrealized Losses,12 months or greater	385,825
Gross Unrealized Losses, 12 months or greater	(21,818)
Fair Value of Investments with Unrealized Losses	819,440
Gross Unrealized Losses	$ (26,202)

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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