Investments - Unrealized Loss Position (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Fixed Maturities
Estimated Fair Value
Less than 12 Months	$ 2,843	$ 2,892
Greater than 12 Months	5,224	7,500
Total	8,067	10,392
Unrealized Loss
Less than 12 Months	2	3
Greater than 12 Months	46	170
Total	48	173
U.S. government, government agencies and authorities
Estimated Fair Value
Less than 12 Months	2,497	1,497
Greater than 12 Months	1,950	2,609
Total	4,447	4,106
Unrealized Loss
Less than 12 Months	2	1
Greater than 12 Months	11	47
Total	13	48
States, municipalities and political subdivisions
Estimated Fair Value
Less than 12 Months	75	0
Greater than 12 Months	453	606
Total	528	606
Unrealized Loss
Less than 12 Months	0	0
Greater than 12 Months	4	14
Total	4	14
Mortgage-backed
Estimated Fair Value
Less than 12 Months	150	800
Greater than 12 Months	1,698	2,134
Total	1,848	2,934
Unrealized Loss
Less than 12 Months	0	1
Greater than 12 Months	22	69
Total	22	70
Corporate
Estimated Fair Value
Less than 12 Months	121	595
Greater than 12 Months	1,123	2,151
Total	1,244	2,746
Unrealized Loss
Less than 12 Months	0	1
Greater than 12 Months	9	40
Total	$ 9	$ 41