Investments - Summary of Amortized Cost and Estimated Fair Value of Fixed-maturity Securities (Detail) $ in Thousands	Dec. 31, 2021 USD ($)
Debt Securities, Available-for-Sale and Held-to-Maturity, after Allowance for Credit Loss [Abstract]
Fixed-Maturity Securities, Amortized Cost, One year or less	$ 3,922
Fixed-Maturity Securities, Estimated Fair Value, More than one year	15,110
Fixed-Maturity Securities, Amortized Cost, More than one year	15,146
Fixed-Maturity Securities, Amortized Cost, Total investments	19,068
Fixed-Maturity Securities, Estimated Fair Value, One year or less	3,918
Fixed-Maturity Securities, Estimated Fair Value, Total investments	$ 19,028

Held to maturity securities debt maturities more than one year amortized cost.

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- Definition

Held to maturity securities debt maturities more than one year fair value.

+ References

No definition available.

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- Definition

Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

+ References

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in next 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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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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