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Investments (Investment Gains and Losses) (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 1,390,487	$ 1,389,038
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	4,948	8,682
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	182,032	158,739
Fixed maturity securities, available-for-sale	1,213,403	1,238,981
US Treasury Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	5,961	5,983
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	91	127
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	94	48
Fixed maturity securities, available-for-sale	5,958	6,062
US Government Agencies Debt Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	3,388	3,404
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	167	250
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	1	1
Fixed maturity securities, available-for-sale	3,554	3,653
US States and Political Subdivisions Debt Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	307,734	314,203
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1,184	2,160
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	31,690	29,132
Fixed maturity securities, available-for-sale	277,228	287,231
Corporate Debt Securities Financial Sector Member [Domain]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	272,484	266,485
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1,266	2,066
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	34,834	31,255
Fixed maturity securities, available-for-sale	238,916	237,296
Corporate Debt Security Consumer Sector
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	252,587	250,672
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1,036	2,145
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	43,286	37,094
Fixed maturity securities, available-for-sale	210,337	215,723
Corporate Debt Security Utilities Sector
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	127,169	123,625
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	202	615
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	23,296	20,253
Fixed maturity securities, available-for-sale	104,075	103,987
Corporate Debt Security Energy Sector
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	79,407	73,808
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	9	64
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	9,602	8,049
Fixed maturity securities, available-for-sale	69,814	65,823
Corporate Debt Security Communications Sector
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	70,884	74,029
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	129	309
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	10,251	8,892
Fixed maturity securities, available-for-sale	60,762	65,446
Corporate Debt Security All Other Sector
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	111,070	111,124
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	382	647
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	15,486	12,439
Fixed maturity securities, available-for-sale	95,966	99,332
Commercial Mortgage Backed Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	271	171
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	6	0
Fixed maturity securities, available-for-sale	265	171
Residential Mortgage Backed Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	106,900	107,174
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	5	9
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	12,486	10,060
Fixed maturity securities, available-for-sale	94,419	97,123
Asset-backed Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	52,632	58,360
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	477	290
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	1,000	1,516
Fixed maturity securities, available-for-sale	$ 52,109	$ 57,134

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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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Amortized cost of 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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