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Investments (Cumulative Noncredit Portion of Other Than Temporary Impairment Recognized in Other Comprehensive Income and Change in Fair Value Since Other Than Temporary Impairment) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Investment Holdings [Line Items]
Amortized cost	$ 625,765	$ 679,265
OTTI recognized in other comprehensive income	(174,835)	(176,334)
Change in fair value since OTTI was recognized	222,594	216,081
Fair value	673,524	719,012
Fixed Maturity Securities [Member] | Corporate Securities [Member]
Investment Holdings [Line Items]
Amortized cost	0	0
OTTI recognized in other comprehensive income	0	0
Change in fair value since OTTI was recognized	27	20
Fair value	27	20
Fixed Maturity Securities [Member] | Residential Mortgage Backed Securities [Member]
Investment Holdings [Line Items]
Amortized cost	625,765	679,265
OTTI recognized in other comprehensive income	(174,835)	(176,334)
Change in fair value since OTTI was recognized	222,567	216,061
Fair value	$ 673,497	$ 718,992

X

- Definition

Change in Fair Value of Securities with Noncredit Other Than Temporary impairment Losses

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No definition available.

+ Details

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X

- Definition

Represents the fair value of securities with noncredit other than temporary impairment losses as of the reporting date.

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No definition available.

+ Details

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- Definition

The cummulative amount of other than temporary impairment (OTTI) loss on a debt security, categorized as either Available-for-sale or Held-to-maturity, related to factors other than credit losses when the entity does not intend to sell the security and it is not more likely than not that the entity will be required to sell the security before recovery of its amortized cost basis that has been recognized since this accounting standard became effective. This amount which is attributable to the parent, is a portion of the deduction from the total impairment losses of Investments (before taxes) presented on the income statement.

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No definition available.

+ Details

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X

- Definition

Amortized cost of securities with noncredit OTTI losses recognized during the reporting period.

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No definition available.

+ Details

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