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Investments (Investment Gains and Losses) (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 1,409,351	$ 1,401,301
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	7,371	5,401
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	169,294	185,741
Fixed maturity securities	1,247,428	1,220,961
US Treasury Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	5,927	5,939
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	98	85
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	87	115
Fixed maturity securities	5,938	5,909
US Government Agencies Debt Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	3,145	3,152
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	206	152
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0	0
Fixed maturity securities	3,351	3,304
US States and Political Subdivisions Debt Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	298,351	300,757
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1,402	1,087
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	29,317	33,542
Fixed maturity securities	270,436	268,302
Corporate Debt Securities Financial Sector Member [Domain]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	270,073	272,925
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	2,289	1,593
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	30,209	33,285
Fixed maturity securities	242,153	241,233
Corporate Debt Security Consumer Sector
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	265,695	263,242
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1,269	899
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	43,081	45,955
Fixed maturity securities	223,883	218,186
Corporate Debt Security Utilities Sector
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	127,120	126,361
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	359	220
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	21,418	22,770
Fixed maturity securities	106,061	103,811
Corporate Debt Security Energy Sector
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	80,513	79,247
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	92	40
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	9,168	9,959
Fixed maturity securities	71,437	69,328
Corporate Debt Security Communications Sector
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	70,722	70,896
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	205	111
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	8,830	9,910
Fixed maturity securities	62,097	61,097
Corporate Debt Security All Other Sector
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	126,765	117,387
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	472	315
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	16,315	16,368
Fixed maturity securities	110,922	101,334
Commercial Mortgage Backed Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	313	315
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	2	1
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	4	5
Fixed maturity securities	311	311
Residential Mortgage Backed Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	106,538	106,661
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	5	7
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	10,137	13,026
Fixed maturity securities	96,406	93,642
Asset-backed Securities [Member]
Gross Unrealized Gains and Losses [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	54,189	54,419
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	972	891
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	728	806
Fixed maturity securities	$ 54,433	$ 54,504

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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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