Investments Gross Unrealized Gains and Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Gross Unrealized Gains and Losses [Line Items]
Fixed maturities available-for-sale, cost	$ 1,321,487	$ 1,293,853
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	169,806	85,661
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	1,910	1,555
Debt Securities, Available-for-sale	1,489,383	1,377,959
US Treasury Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Fixed maturities available-for-sale, cost	9,529	9,709
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1,797	1,638
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0	0
Debt Securities, Available-for-sale	11,326	11,347
US Government Agencies Debt Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Fixed maturities available-for-sale, cost	3,490	3,516
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1,301	1,015
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0	0
Debt Securities, Available-for-sale	4,791	4,531
US States and Political Subdivisions Debt Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Fixed maturities available-for-sale, cost	377,462	512,239
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	32,751	24,285
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	548	240
Debt Securities, Available-for-sale	409,665	536,284
Corporate Debt Security Financial Sector
Gross Unrealized Gains and Losses [Line Items]
Fixed maturities available-for-sale, cost	204,160	169,146
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	31,000	13,094
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	13	135
Debt Securities, Available-for-sale	235,147	182,105
Corporate Debt Security Consumer Sector
Gross Unrealized Gains and Losses [Line Items]
Fixed maturities available-for-sale, cost	196,648	148,575
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	30,116	12,591
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	245	464
Debt Securities, Available-for-sale	226,519	160,702
Corporate Debt Security Energy Sector
Gross Unrealized Gains and Losses [Line Items]
Fixed maturities available-for-sale, cost	81,223	74,315
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	8,174	4,765
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	536	115
Debt Securities, Available-for-sale	88,861	78,965
Corporate Debt Security All Other Sector
Gross Unrealized Gains and Losses [Line Items]
Fixed maturities available-for-sale, cost	284,209	212,714
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	42,554	16,022
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	82	420
Debt Securities, Available-for-sale	326,681	228,316
Commercial Mortgage Backed Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Fixed maturities available-for-sale, cost	225	1,105
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	4	5
Debt Securities, Available-for-sale	221	1,100
Residential Mortgage Backed Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Fixed maturities available-for-sale, cost	118,144	118,130
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	21,819	12,223
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0	66
Debt Securities, Available-for-sale	139,963	130,287
Asset-backed Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Fixed maturities available-for-sale, cost	46,295	44,302
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	278	11
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	482	110
Debt Securities, Available-for-sale	46,091	44,203
Foreign Governments [Member]
Gross Unrealized Gains and Losses [Line Items]
Fixed maturities available-for-sale, cost	102	102
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	16	17
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0	0
Debt Securities, Available-for-sale	$ 118	$ 119