Investments (Details 5) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Realized investment gains (losses)
Net realized investment gains	$ 672	$ 492	$ 1,057
Other-than-temporary impairments on investments
Other -than-temporary impairments on investments	(416)	(1,558)	(105)
Portion recognized in other comprehensive income	0	0	0
Net impairment losses recognized in earnings	(416)	(1,558)	(105)
Fixed maturities
Available-for-sale securities:
Gross realized gains	2,111	1,571	453
Gross realized losses	(2,113)	(1,764)	(333)
Net realized (losses) gains	(2)	(193)	120
Other-than-temporary impairments on investments
Other -than-temporary impairments on investments	(416)	(1,558)	(105)
Equity securities
Available-for-sale securities:
Gross realized gains	1	759	1,132
Gross realized losses	(34)	(74)	(195)
Net realized (losses) gains	(33)	685	937
Common stock
Trading securities:
Gross realized gains	707	0	0
Net realized gains	$ 707	$ 0	$ 0

This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
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Amount of loss realized on the sale of debt or equity securities classified as available-for-sale. Excludes other than temporary impairments (OTTI).

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The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Amount before tax of other than temporary impairment (OTTI) on investment in available-for-sale debt security, recognized in other comprehensive loss.

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-Publisher FASB
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The amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.

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This item represents the net total realized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain or loss of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain or loss which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting and/or investments that are separately or otherwise not categorized as trading, available-for-sale, or held-to-maturity.

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This item represents the gain realized during the period from the sale of trading securities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Amount of gain (loss) realized from securities classified as trading.

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-Name Accounting Standards Codification
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