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Insurance Operations - Additional Information (Detail) - USD ($) | 6 Months Ended
--- | ---
Jun. 30, 2022 | Jun. 30, 2021
UPCIC |  |
Statutory Accounting Practices [Line Items] |  |
Dividend paid to immediate parent company | $ 0 |
APPCIC |  |
Statutory Accounting Practices [Line Items] |  |
Dividend paid to immediate parent company |  | $ 0
UPCIC and APPCIC |  |
Statutory Accounting Practices [Line Items] |  |
Minimum capitalization rate | 10.00% |
UPCIC and APPCIC | Minimum |  |
Statutory Accounting Practices [Line Items] |  |
Minimum capitalization amount | $ 15,000,000 |

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- Definition Amount of statutory capital required to be maintained as of the balance sheet date under prescribed or permitted statutory accounting practices. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529 + Details
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