Investments - Contractual Maturities of Available for Sale Fixed Maturity Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Amortized Cost
Due within one year	$ 37,321
Due after one year through five years	177,989
Due after five years through ten years	128,378
Due after ten years	32,643
Mortgage and asset-backed securities	154,661
Amortized Cost	530,992	$ 426,122
Fair Value
Due within one year	36,730
Due after one year through five years	165,172
Due after five years through ten years	109,641
Due after ten years	25,508
Mortgage and asset-backed securities	139,743
Fair Value	$ 476,794	$ 432,682

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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