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Investments (Net Investment Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net Investment Income [Line Items]
Net investment income earned	$ 30,769	$ 26,917
Fixed Income Securities [Member]
Net Investment Income [Line Items]
Net investment income earned	31,644	30,967
Equity Securities [Member]
Net Investment Income [Line Items]
Net investment income earned	2,230	1,792
Short-Term Investments [Member]
Net Investment Income [Line Items]
Net investment income earned	159	25
Other Investments [Member]
Net Investment Income [Line Items]
Net investment income earned	(1,066)	(3,540)
Investment Expenses [Member]
Net Investment Income [Line Items]
Net investment income earned	$ (2,198)	$ (2,327)

X

- Definition

Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(2))
-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 235
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-16(Column G))
-URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915

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- Definition

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.

+ References

No definition available.

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