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Long-Term Debt - Schedule of Long-Term Debt (Detail) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
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Debt Disclosure [Abstract] |  |
Surplus note | $ 8,088 | $ 8,456

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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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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Balance Type: | credit
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