Investments (Details 5) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net realized investment (losses) gains
Net realized investment (losses) gains	$ (32)	$ 124	$ (497)	$ 640
Available-for-sale securities
Available-for-sale securities:
Gross realized gains	235	507	575	1,087
Gross realized losses	(301)	(381)	(986)	(539)
Net realized (losses) gains on available-for-sale securities	(66)	126	(411)	548
Equity securities
Equity securities
Equity securities	(68)		(188)
Other investments
Miscellaneous
Miscellaneous	$ 102	$ (2)	$ 102	$ 92

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Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), excluding other-than-temporary impairment (OTTI).

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Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), excluding other-than-temporary impairment (OTTI).

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Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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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