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Investments (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Summary of realized investment gains (losses)
Net realized investment gains	$ 4,123	$ 12,713	$ 10,917
Fixed Maturities [Member]
Summary of realized investment gains (losses)
Net realized investment gains	5,784	10,289	8,150
Equity Securities [Member]
Summary of realized investment gains (losses)
Net realized investment gains	(608)	1,378	2,793
Short Term And Other Investments [Member]
Summary of realized investment gains (losses)
Net realized investment gains	$ (1,053)	$ 1,046	$ (26)

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- Definition

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))
-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 325
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6485959&loc=d3e22529-158502

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