Investments - Summary of Company's Investment Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Investment Securities [Line Items]
Amortized Cost	$ 117,619	$ 117,902
Gross Unrealized Gains	2,593	2,389
Gross Unrealized Losses	(2,781)	(3,079)
Fair Value	117,431	117,212
Fixed Maturities
Investment Securities [Line Items]
Amortized Cost	102,781	103,064
Gross Unrealized Gains	1,492	1,493
Gross Unrealized Losses	(2,689)	(2,968)
Fair Value	101,584	101,589
Fixed Maturities \| U.S. government and agencies
Investment Securities [Line Items]
Amortized Cost	19,639	19,142
Gross Unrealized Gains	106	112
Gross Unrealized Losses	(276)	(303)
Fair Value	19,469	18,951
Fixed Maturities \| Political subdivisions
Investment Securities [Line Items]
Amortized Cost	4,203	4,233
Gross Unrealized Losses	(14)	(68)
Fair Value	4,189	4,165
Fixed Maturities \| Revenue and assessment
Investment Securities [Line Items]
Amortized Cost	5,436	5,539
Gross Unrealized Gains	186	185
Gross Unrealized Losses	(32)	(41)
Fair Value	5,590	5,683
Fixed Maturities \| Corporate bonds
Investment Securities [Line Items]
Amortized Cost	47,189	47,238
Gross Unrealized Gains	81	107
Gross Unrealized Losses	(1,620)	(1,805)
Fair Value	45,650	45,540
Fixed Maturities \| Collateralized mortgage obligations: Agency Backed
Investment Securities [Line Items]
Amortized Cost	22,666	23,093
Gross Unrealized Gains	72	73
Gross Unrealized Losses	(740)	(744)
Fair Value	21,998	22,422
Fixed Maturities \| Collateralized mortgage obligations: Non-agency backed - residential
Investment Securities [Line Items]
Amortized Cost	2,309	2,411
Gross Unrealized Gains	543	529
Gross Unrealized Losses	(7)	(7)
Fair Value	2,845	2,933
Fixed Maturities \| Collateralized mortgage obligations: Non-agency backed - commercial
Investment Securities [Line Items]
Amortized Cost	1,339	1,408
Gross Unrealized Gains	504	487
Fair Value	1,843	1,895
Preferred stocks, available-for-sale
Investment Securities [Line Items]
Amortized Cost	3,025	3,025
Gross Unrealized Gains	220	198
Gross Unrealized Losses	(92)	(111)
Fair Value	3,153	3,112
Mutual funds, available-for-sale
Investment Securities [Line Items]
Amortized Cost	11,813	11,813
Gross Unrealized Gains	881	698
Fair Value	$ 12,694	$ 12,511

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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-Publisher FASB
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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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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.

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