Investments - Schedule of Realized Gain (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities
Gross Realized Gains	$ 1,772	$ 3,201	$ 1,115
Fair Value at Sale	213,979	47,849	37,457
Gross Realized Losses	(544)	(1,546)	(1,048)
Fair Value at Sale	45,995	136,939	54,943
Net realized gains (losses)	1,228	1,655	67
Net Fair Value at Sale	259,974	184,788	92,400
Fixed Maturities
Schedule of Available-for-sale Securities
Gross Realized Gains	1,678	373	268
Fair Value at Sale	209,302	41,776	35,248
Gross Realized Losses	(324)	(1,376)	(890)
Fair Value at Sale	43,573	135,944	53,194
Equity Securities
Schedule of Available-for-sale Securities
Gross Realized Gains	94	2,828	847
Fair Value at Sale	814	6,073	2,209
Gross Realized Losses	(219)	(170)	(158)
Fair Value at Sale	1,387	995	1,749
Short-term Investments
Schedule of Available-for-sale Securities
Gross Realized Gains	0	0	0
Fair Value at Sale	3,863	0	0
Gross Realized Losses	(1)	0	0
Fair Value at Sale	$ 1,035	$ 0	$ 0