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Investments (Schedule of Other Than Temporary Impairment Losses, Investments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Cummulative Non-credit Portion of Other Than Temporary Impairment [Abstract]
Amortized cost	$ 679,265	$ 876,490
OTTI recognized in other comprehensive income	(176,334)	(179,755)
Change in fair value since OTTI was recognized	216,081	186,858
Fair value	719,012	883,593
Fixed Maturity Securities [Member] | Corporate Securities [Member]
Cummulative Non-credit Portion of Other Than Temporary Impairment [Abstract]
Amortized cost	0	10,599
OTTI recognized in other comprehensive income	0	(2,151)
Change in fair value since OTTI was recognized	20	5,676
Fair value	20	14,124
Fixed Maturity Securities [Member] | Residential Mortgage Backed Securities [Member]
Cummulative Non-credit Portion of Other Than Temporary Impairment [Abstract]
Amortized cost	679,265	855,915
OTTI recognized in other comprehensive income	(176,334)	(177,604)
Change in fair value since OTTI was recognized	216,061	171,514
Fair value	718,992	849,825
Equity Securities, Available For Sale [Member] | Finance, Insurance and Real Estate [Member]
Cummulative Non-credit Portion of Other Than Temporary Impairment [Abstract]
Amortized cost		9,976
OTTI recognized in other comprehensive income		0
Change in fair value since OTTI was recognized		9,668
Fair value		$ 19,644

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- Definition

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

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No definition available.

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- 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.

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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.

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- Definition

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

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No definition available.

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