Policy Benefits for Life and Annuity Contracts - Schedule of Life and Annuity Benefits (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Insurance [Abstract]
Life	$ 419,453	$ 436,603
Annuities	916,729	921,654
Life and Annuities	1,336,182	1,358,257
Fair value adjustments	(49,906)	(53,560)
Life and Annuities, net	$ 1,286,276	$ 1,304,697

Liability For Future Policy Benefits, Before Fair Value Adjustments

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Liability for Future Policy Benefits, Fair Value Adjustment

+ References

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Amount of accrued obligation to policyholders that relates to insured events for long-duration contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 25
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-URI http://asc.fasb.org/extlink&oid=28366191&loc=d3e13145-158430

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Amount of accrued obligation to policyholders that relates to insured events under individual and group annuities and supplementary insurance contracts.

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Amount of accrued obligation to policyholders that relates to insured events under long-term life insurance contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
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