Investments (Narrative) (Details) - USD ($)	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Investment [Line Items]
Net change in unrealized gains (losses) from other trading account assets	$ (600,000)	$ (900,000)	$ 800,000
Commercial mortgage loans, Percentage	100.00%	100.00%
Non Income Producing Assets, Fixed Maturities	$ 0
Gross unrealized losses related to high or highest quality securities	22,600,000	$ 4,000,000
Gross unrealized losses related to other than high or highest quality securities	12,100,000	3,100,000
Twelve months or more Unrealized Losses	18,791,000	1,152,000
Securities Loaned, Including Not Subject to Master Netting Arrangement and Assets other than Securities Transferred	11,000,000
Fixed maturities
Investment [Line Items]
Assets Deposited With Governmental Authorities	8,000,000	7,000,000
Cash Collateral For Loaned Securities
Investment [Line Items]
Financial Instruments Owned and Pledged as Collateral, Associated Liabilities	$ 11,000,000	$ 5,000,000
California
Investment [Line Items]
Commercial mortgage loans, Percentage	22.00%
New York
Investment [Line Items]
Commercial mortgage loans, Percentage	12.00%

Assets Deposited With Governmental Authorities.

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Below Investment Grade Securities, Gross Unrealized Losses

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- Definition

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Investment Grade Securities, Gross Unrealized Losses

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- Definition

Line items represent reporting 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 12
-Sentence Column A

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Amount, before effects of master netting arrangements, of financial assets loaned to entities in exchange for collateral. Includes liabilities not subject to a master netting arrangement and financial assets transferred other than securities that qualify as secured borrowings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 7
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=55761124&loc=SL34722452-111729

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