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Fair Value Measurements - Summarizes Carrying Value and Estimated Fair Values of Financial Instruments not Carried at Fair Value (Detail) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Carrying Value | $ 106,618 | $ 106,985
Estimated Fair Value | 108,195 | 106,187
Surplus note | Surplus note |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Carrying Value | 6,618 | 6,985
Estimated Fair Value | 6,385 | 6,723
5.625% Senior unsecured notes |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Carrying Value | 100,000 | 100,000
Estimated Fair Value | $ 101,810 | $ 99,464

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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- Definition Financial instruments issued by insurance entities (surplus notes) that are includable in surplus for statutory accounting purposes as prescribed or permitted by state laws and regulations that are liabilities of the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6486086&loc=d3e24387-158525 + Details
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- Details
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- Details
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