This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 7

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 9

-Subparagraph (a)

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This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities and excluding other than temporary impairments (OTTI), if any, recognized elsewhere.

+ References

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The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-04.3(a))

-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

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-Publisher FASB

-Name Accounting Standards Codification

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 3

-Subparagraph a

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Realized Gains and Losses, Excluding Net Other-Than-Temporary Impairment Losses Recognized in Earnings (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Gain (Loss) on Investments [Line Items]
Net realized gains (losses)	$ 788us-gaap_RealizedInvestmentGainsLosses	$ 6,718us-gaap_RealizedInvestmentGainsLosses	$ 4,473us-gaap_RealizedInvestmentGainsLosses	$ 833us-gaap_RealizedInvestmentGainsLosses	$ 15,768us-gaap_RealizedInvestmentGainsLosses	$ (988)us-gaap_RealizedInvestmentGainsLosses	$ 3,345us-gaap_RealizedInvestmentGainsLosses	$ 4,814us-gaap_RealizedInvestmentGainsLosses	$ 12,812us-gaap_RealizedInvestmentGainsLosses	$ 22,939us-gaap_RealizedInvestmentGainsLosses	$ 41,074us-gaap_RealizedInvestmentGainsLosses
Fixed maturities
Gain (Loss) on Investments [Line Items]
Gains									8,326	8,539	28,789
Losses									(2,610)	(2,797)	(1,915)
Net realized gains (losses)									5,716	5,742	26,874
Equity Securities
Gain (Loss) on Investments [Line Items]
Gains									9,447	17,955	14,673
Losses									(2,351)	(758)	(473)
Net realized gains (losses)									$ 7,096	$ 17,197	$ 14,200