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Long-term Debt - Schedule of Long-Term Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total principal amount	$ 105,147	$ 105,515
Less: unamortized debt issuance costs	(2,569)	(2,746)
Total long-term debt, net	102,578	102,769
Surplus note
Debt Instrument [Line Items]
Total principal amount	5,147	5,515
5.625% Senior unsecured notes
Debt Instrument [Line Items]
Total principal amount	$ 100,000	$ 100,000

X

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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