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Investment Securities - Summary of Net Investment Income (Loss) (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2012 Successor [Member]	Dec. 31, 2013 Successor [Member]	Mar. 19, 2012 Predecessor [Member]	Dec. 31, 2011 Predecessor [Member]
Investment income (loss):
Amortization of premium or discount on fixed-maturity securities	$ (1,837)	$ (2,309)	$ (523)	$ (2,750)
Investment income on fixed-maturity securities	7,232	6,588	2,467	12,920
Interest income on cash and equivalents	161	10	3	49
Realized net gain (loss) from sale of investments	2,747	(1,575)	176	1,206
Unrealized (losses) gains on trading securities held at period end	(1,410)	(3,492)	1,049	(2,828)
Net investment income (loss)	$ 6,893	$ (778)	$ 3,172	$ 8,597

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

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-Publisher FASB

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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)

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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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Investment income on fixed-maturity securities.

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