This item represents the gross loss realized on the disposal of held-to-maturity securities during the period.

No definition available.

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This item represents the gross gain realized on the disposal of held-to-maturity securities during the period.

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No definition available.

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This item represents the gross profit realized on the sale of other investments.

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No definition available.

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This item represents the gross loss realized on the sale of other investments.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-Section 50
-Paragraph 9
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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.

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The net gain (loss) realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Investments (Components Of Net Realized Gains, Excluding OTTI Charges) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
HTM fixed income securities gains									$ 5	$ 2	$ 195
HTM fixed income securities losses									(1)	(20)	(95)
Other investment securities gains									162	1	0
Other investment securities losses									(653)	0	(1,060)
Net realized investment gains	$ (2,600)	$ 308	$ (3,420)	$ 18,883	$ (389)	$ 15,231	$ 4,539	$ 7,218	31,537	37,703	26,375
Proceeds from sale of available-for-sale securities									234,100	259,000	135,900
Fixed Income Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
AFS securities gains									4,515	1,945	3,340
AFS securities losses									(312)	(392)	(373)
Equity Securities [Member]
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
AFS securities gains									29,168	36,871	24,776
AFS securities losses									$ (1,347)	$ (704)	$ (408)