Number of individual fixed maturity securities in unrealized loss position.

No definition available.

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- Definition

Number of individual investment securities in unrealized loss position greater than twelve months.

+ References

No definition available.

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- Definition

Carrying amount of cash and investment securities on deposit with state regulatory authorities in connection with capital requirements.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 825
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-Paragraph 1A
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- Definition

The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
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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.

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- Definition

Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.

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Investments - Additional Information (Detail)	12 Months Ended
Investments - Additional Information (Detail)	Dec. 31, 2019 USD ($) Security	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Marketable Securities [Line Items]
Individual fixed maturity held in unrealized loss position \| Security	59
Individual fixed maturity held in unrealized loss position longer than 12 months \| Security	11
Impairment losses recognized	$ 0	$ 0	$ 0
Held-to-Maturity Securities [Member]
Marketable Securities [Line Items]
Investments on deposit with regulatory agencies	15,900,000
Available-for-Sale Securities [Member]
Marketable Securities [Line Items]
Investments on deposit with regulatory agencies	2,500,000
Corporate Bonds [Member]
Marketable Securities [Line Items]
Short-term investments		13,400,000
States and Political Subdivisions [Member]
Marketable Securities [Line Items]
Short-term investments	1,900,000	$ 800,000
U.S. Treasury Securities and Obligations of U.S. Government Agencies [Member]
Marketable Securities [Line Items]
Short-term investments	$ 54,600,000