Investments - Summary of Company's Investment Securities (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2015	Dec. 31, 2014
Investment Securities [Line Items]
Amortized Cost	$ 132,727	$ 119,119
Gross Unrealized Gains	5,352	6,648
Gross Unrealized Losses	(1,081)	(682)
Fair Value	136,998	125,085
Fixed Maturities
Investment Securities [Line Items]
Amortized Cost	121,326	107,718
Gross Unrealized Gains	4,870	5,978
Gross Unrealized Losses	(1,068)	(674)
Fair Value	125,128	113,022
Fixed Maturities \| U.S. government and agencies
Investment Securities [Line Items]
Amortized Cost	13,037	8,039
Gross Unrealized Gains	239	277
Gross Unrealized Losses	(69)	(26)
Fair Value	13,207	8,290
Fixed Maturities \| State
Investment Securities [Line Items]
Amortized Cost	698	698
Gross Unrealized Gains	12	27
Fair Value	710	725
Fixed Maturities \| Political subdivisions
Investment Securities [Line Items]
Amortized Cost	500	500
Gross Unrealized Gains	1	6
Fair Value	501	506
Fixed Maturities \| Revenue and assessment
Investment Securities [Line Items]
Amortized Cost	12,546	14,856
Gross Unrealized Gains	980	1,522
Gross Unrealized Losses	(48)	(18)
Fair Value	13,478	16,360
Fixed Maturities \| Corporate bonds
Investment Securities [Line Items]
Amortized Cost	84,724	73,051
Gross Unrealized Gains	2,208	2,698
Gross Unrealized Losses	(942)	(630)
Fair Value	85,990	75,119
Fixed Maturities \| Collateralized mortgage obligations: Agency Backed
Investment Securities [Line Items]
Amortized Cost	4,470	4,647
Gross Unrealized Gains	113	160
Gross Unrealized Losses	(8)
Fair Value	4,575	4,807
Fixed Maturities \| Collateralized mortgage obligations: Non-agency backed - residential
Investment Securities [Line Items]
Amortized Cost	3,231	3,513
Gross Unrealized Gains	671	624
Gross Unrealized Losses	(1)
Fair Value	3,901	4,137
Fixed Maturities \| Collateralized mortgage obligations: Non-agency backed - commercial
Investment Securities [Line Items]
Amortized Cost	2,120	2,414
Gross Unrealized Gains	646	664
Fair Value	2,766	3,078
Preferred stock, available-for-sale
Investment Securities [Line Items]
Amortized Cost	1,500	1,500
Gross Unrealized Gains	193	267
Fair Value	1,693	1,767
Mutual funds, available-for-sale
Investment Securities [Line Items]
Amortized Cost	9,901	9,901
Gross Unrealized Gains	289	403
Gross Unrealized Losses	(13)	(8)
Fair Value	$ 10,177	$ 10,296

Investment securities.

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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

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

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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.

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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 Trading Securities

-URI http://asc.fasb.org/extlink&oid=6526789

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-Name Accounting Standards Codification

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Subparagraph a, f, g

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