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Insurance Operations - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2018 USD ($)
UPCIC [Member]
Statutory Accounting Practices [Line Items]
Ordinary dividend capacity accordance with Florida Insurance Code	$ 36,200,000
Dividend paid to immediate parent company	0
APPCIC [Member]
Statutory Accounting Practices [Line Items]
Dividend paid to immediate parent company	$ 0
UPCIC and APPCIC [Member]
Statutory Accounting Practices [Line Items]
Minimum capitalization rate	10.00%
Minimum capital required	greater of ten percent of the insurer’s total liabilities but not less than $10.0 million.
UPCIC and APPCIC [Member] | Minimum [Member]
Statutory Accounting Practices [Line Items]
Minimum capitalization amount	$ 10,000,000

X

- Definition

This element represents disclosure of the aggregate cash dividends paid to the entity by consolidated subsidiaries.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(b))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

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- Definition

For insurance companies, a description of the minimum regulatory capital requirements imposed by state insurance regulators, and restrictions on dividend payments.

+ 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
-URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529

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- Definition

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+ References

No definition available.

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- Definition

Amount of dividends that can be declared or paid without approval of regulatory agency.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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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
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-URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529

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- Definition

Represents the minimum amount of capitalization required by regulatory agencies as a percentage of total liabilities.

+ References

No definition available.

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