Summary of Investments (Net Realized Investment Gains and Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	$ 2,055	$ 887
Available-for-sale Securities [Abstract]
Proceeds from sales	1,968	5,017
Gross realized gains	921	973
Gross realized losses	0	0
Fixed Maturities [Member] \| Available-for-sale [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	516	991
Fixed Maturities [Member] \| Trading Securities, Change in Fair Value [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	273	(201)
Fixed Maturities [Member] \| Trading Securities, Sales [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	0	516
Equity Securities [Member] \| Available-for-sale [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	984	904
Equity Securities [Member] \| Trading Securities, Change in Fair Value [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	93	(56)
Equity Securities [Member] \| Trading Securities, Sales [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	0	46
Other Long-term Investments [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	43	(1,313)
Cash Equivalents [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses)	$ 146	$ 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
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
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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.

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