SUMMARY OF INVESTMENTS - Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Amortized Cost
Due in one year or less	$ 18,303
Due after one year through five years	430,076
Due after five years through 10 years	458,607
Due after 10 years	255,387
Amortized Cost	2,413,286	$ 2,239,173
Fair Value
Due in one year or less	18,283
Due after one year through five years	411,623
Due after five years through 10 years	426,081
Due after 10 years	228,267
Fair Value	2,267,816	$ 2,205,350
Asset-backed securities
Amortized Cost
Asset-backed securities	1,250,913
Fair Value
Asset-backed securities	1,183,562
Fixed Maturities
Amortized Cost
Amortized Cost	2,413,286
Fair Value
Fair Value	$ 2,267,816

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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-Topic 942
-SubTopic 320
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477268/942-320-50-3

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+ References

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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Amortized cost excluding accrued interest, before allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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Amount excluding accrued interest, of 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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