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Investment Securities - Summary of Net Investment Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Investment income (loss):
Amortization of premium or discount on fixed-maturity securities	$ (429)	$ (596)	$ (958)	$ (1,084)
Investment income on fixed-maturity securities	906	1,779	2,008	3,637
Interest income on cash and equivalents	5	5	7	9
Realized net gain (loss) from sale of investments	389	(121)	416	13
Unrealized (losses) on trading securities held at period end	(434)	(3,775)	(368)	(4,587)
Net investment income (loss)	$ 437	$ (2,708)	$ 1,105	$ (2,012)

X

- Definition

The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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- Definition

Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Article 5



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- Definition

Amount after accretion (amortization) of discount (premium), and investment expense, of interest income and dividend income on nonoperating securities.

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Amount of accretion (amortization) of purchase discount (premium) on nonoperating securities.

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Amount of unrealized holding gain (loss) recognized in the income statement for investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.

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

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Investment income on fixed-maturity securities.

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