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Investments (OTTI by Asset Type) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
OTTI Losses Gross	$ 257	$ 532
Other-than-temporary impairments on fixed maturity securities recognized in other comprehensive income	(164)	(98)
OTTI Losses Recognized in Earnings	421	630
Equity Securities [Member]
OTTI Losses Gross	171
Other-than-temporary impairments on fixed maturity securities recognized in other comprehensive income	0
OTTI Losses Recognized in Earnings	171
Fixed Maturity Securities [Member]
OTTI Losses Gross	86
Other-than-temporary impairments on fixed maturity securities recognized in other comprehensive income	(164)
OTTI Losses Recognized in Earnings	250
Fixed Maturity Securities [Member] | Obligations of States and Political Subdivisions [Member]
OTTI Losses Gross		17
Other-than-temporary impairments on fixed maturity securities recognized in other comprehensive income		0
OTTI Losses Recognized in Earnings		17
Fixed Maturity Securities [Member] | Corporate Securities [Member]
OTTI Losses Gross		244
Other-than-temporary impairments on fixed maturity securities recognized in other comprehensive income		0
OTTI Losses Recognized in Earnings		244
Fixed Maturity Securities [Member] | Asset-backed Securities ("ABS") [Member]
OTTI Losses Gross	32
Other-than-temporary impairments on fixed maturity securities recognized in other comprehensive income	0
OTTI Losses Recognized in Earnings	32
Fixed Maturity Securities [Member] | Commercial Mortgage-backed Securities ("CMBS") [Member]
OTTI Losses Gross	108	74
Other-than-temporary impairments on fixed maturity securities recognized in other comprehensive income	0	(256)
OTTI Losses Recognized in Earnings	108	330
Fixed Maturity Securities [Member] | Residential Mortgage Backed Securities ("RMBS") [Member]
OTTI Losses Gross	(54)	197
Other-than-temporary impairments on fixed maturity securities recognized in other comprehensive income	(164)	158
OTTI Losses Recognized in Earnings	$ 110	$ 39

X

- Definition

The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

+ References

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X

- Definition

The 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. This amount, which includes the portion attributable to the noncontrolling interest, if any, is deducted from the total impairment losses of investments (before taxes) presented on the income statement; this amount is also referred to as the amount incurred by the reporting entity or the consolidated entity.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-Publisher FASB

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X

- Definition

The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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