Investments - Summary of Company's Investment Securities (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Investment Securities [Line Items]
Amortized Cost	$ 119,119	$ 126,873
Gross Unrealized Gains	6,648	5,666
Gross Unrealized Losses	(682)	(2,291)
Fair Value	125,085us-gaap_InvestmentsFairValueDisclosure	130,248us-gaap_InvestmentsFairValueDisclosure
Preferred Stock
Investment Securities [Line Items]
Amortized Cost	1,500	1,500
Gross Unrealized Gains	267	78
Fair Value	1,767	1,578
Equity Funds
Investment Securities [Line Items]
Amortized Cost	9,901	9,901
Gross Unrealized Gains	403	836
Gross Unrealized Losses	(8)
Fair Value	10,296	10,737
Fixed Maturities
Investment Securities [Line Items]
Amortized Cost	107,718	115,472
Gross Unrealized Gains	5,978	4,752
Gross Unrealized Losses	(674)	(2,291)
Fair Value	113,022	117,933
Fixed Maturities \| US Government Agencies Debt Securities
Investment Securities [Line Items]
Amortized Cost	8,039	12,006
Gross Unrealized Gains	277	495
Gross Unrealized Losses	(26)	(16)
Fair Value	8,290	12,485
Fixed Maturities \| State Securities
Investment Securities [Line Items]
Amortized Cost	698	697
Gross Unrealized Gains	27	39
Fair Value	725	736
Fixed Maturities \| Political Subdivisions Securities
Investment Securities [Line Items]
Amortized Cost	500	1,601
Gross Unrealized Gains	6	51
Fair Value	506	1,652
Fixed Maturities \| Revenue And Assessment Securities
Investment Securities [Line Items]
Amortized Cost	14,856	13,050
Gross Unrealized Gains	1,522	579
Gross Unrealized Losses	(18)	(11)
Fair Value	16,360	13,618
Fixed Maturities \| Corporate Bond Securities
Investment Securities [Line Items]
Amortized Cost	73,051	73,461
Gross Unrealized Gains	2,698	2,127
Gross Unrealized Losses	(630)	(2,263)
Fair Value	75,119	73,325
Fixed Maturities \| Agency Backed [Member]
Investment Securities [Line Items]
Amortized Cost	4,647	7,113
Gross Unrealized Gains	160	401
Fair Value	4,807	7,514
Fixed Maturities \| Collateralized Non Agency Backed Residential Obligations
Investment Securities [Line Items]
Amortized Cost	3,513	4,181
Gross Unrealized Gains	624	480
Gross Unrealized Losses		(1)
Fair Value	4,137	4,660
Fixed Maturities \| Collateralized Non Agency Backed Commercial Obligations
Investment Securities [Line Items]
Amortized Cost	2,414	3,363
Gross Unrealized Gains	664	580
Fair Value	$ 3,078	$ 3,943

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

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-Paragraph 1

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Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 2

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Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Available-for-Sale Securities

-URI http://asc.fasb.org/extlink&oid=6505594

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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