Investments - Schedule of Realized Gain (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Gains (Losses)
Gross realized gains	$ 48	$ 267	$ 147	$ 1,322
Gross realized losses	(180)	(165)	(630)	(950)
Net realized gains (losses)	(132)	102	(483)	372
Fair Value at Sale
Fair value at sale	6,329	21,809	18,915	47,151
Fair value at sale	13,948	14,865	37,496	30,036
Net fair value at sale	20,277	36,674	56,411	77,187
Fixed Maturities
Gains (Losses)
Gross realized gains	41	243	140	1,298
Gross realized losses	(170)	(96)	(620)	(774)
Fair Value at Sale
Fair value at sale	6,310	11,040	18,896	36,382
Fair value at sale	13,848	3,866	37,396	13,028
Equity Securities
Gains (Losses)
Gross realized gains	7	24	7	24
Gross realized losses	(10)	(69)	(10)	(176)
Fair Value at Sale
Fair value at sale	19	10,769	19	10,769
Fair value at sale	$ 100	$ 10,999	$ 100	$ 17,008