Summary of Investments (Net Realized Investment Gains and Losses) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	$ 887us-gaap_RealizedInvestmentGainsLosses	$ 2,194us-gaap_RealizedInvestmentGainsLosses
Available-for-sale Securities [Abstract]
Proceeds from sales	5,017	0
Gross realized gains	973	0
Gross realized losses	0	0
Fixed Maturities [Member] \| Available-for-sale [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	991	647
Fixed Maturities [Member] \| Trading Securities, Change in Fair Value [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	(201)	300
Fixed Maturities [Member] \| Trading Securities, Sales [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	516	235
Equity Securities [Member] \| Available-for-sale [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	904	835
Equity Securities [Member] \| Trading Securities, Change in Fair Value [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	(56)	177
Equity Securities [Member] \| Trading Securities, Sales [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	46	0
Other Long-term Investments [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	$ (1,313)	$ 0

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 9

-Subparagraph (a)

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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 cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

+ 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 210.7-04.3(a))

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