Investments (Investment Gains and Losses) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 1,362,404	$ 1,343,755
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	10,621	129,896
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	136,021	3,034
Fixed maturity securities, available-for-sale	1,237,004	1,470,617
US Treasury Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	9,471	9,515
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	458	1,097
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	7	1
Fixed maturity securities, available-for-sale	9,922	10,611
US Government Agencies Debt Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	3,449	3,463
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	485	996
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0	0
Fixed maturity securities, available-for-sale	3,934	4,459
US States and Political Subdivisions Debt Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	359,199	356,594
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	5,913	28,056
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	21,723	692
Fixed maturity securities, available-for-sale	343,389	383,958
Corporate Debt Securities Financial Sector Member [Domain]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	229,937	213,652
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	675	22,477
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	29,961	172
Fixed maturity securities, available-for-sale	200,651	235,957
Corporate Debt Security Consumer Sector
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	238,842	219,223
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1,781	23,658
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	31,996	900
Fixed maturity securities, available-for-sale	208,627	241,981
Corporate Debt Security Utilities Sector
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	110,093	105,738
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	191	7,358
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	17,654	801
Fixed maturity securities, available-for-sale	92,630	112,295
Corporate Debt Security Energy Sector
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	75,292	76,989
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	21	7,334
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	8,884	68
Fixed maturity securities, available-for-sale	66,429	84,255
Corporate Debt Security All Other Sector
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	187,706	196,403
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	869	22,497
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	22,150	380
Fixed maturity securities, available-for-sale	166,425	218,520
Residential Mortgage Backed Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	111,950	117,755
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	197	16,046
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	2,133	6
Fixed maturity securities, available-for-sale	110,014	133,795
Asset-backed Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	36,364	44,322
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	28	368
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	1,513	14
Fixed maturity securities, available-for-sale	34,879	44,676
Foreign Government, Non-US [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	101	101
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	3	9
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0	0
Fixed maturity securities, available-for-sale	$ 104	$ 110

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) 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, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) 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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