v3.26.1
Investments (Investment Gains and Losses) (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Gross Unrealized Gains and Losses [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost $ 1,438,702 $ 1,432,454
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 6,004 9,748
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 162,646 154,341
Fixed maturity securities 1,282,060 1,287,861
US Treasury Securities    
Gross Unrealized Gains and Losses [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 5,667 5,692
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 18 61
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 113 99
Fixed maturity securities 5,572 5,654
US Government Agencies Debt Securities    
Gross Unrealized Gains and Losses [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 1,261 1,268
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 53 86
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 0 0
Fixed maturity securities 1,314 1,354
US States and Political Subdivisions Debt Securities    
Gross Unrealized Gains and Losses [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 285,103 294,347
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 1,368 1,881
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 28,086 27,436
Fixed maturity securities 258,385 268,792
Corporate Debt Securities Financial Sector Member    
Gross Unrealized Gains and Losses [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 326,003 323,056
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 2,144 4,137
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 29,825 26,847
Fixed maturity securities 298,322 300,346
Corporate Debt Security Consumer Sector    
Gross Unrealized Gains and Losses [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 249,191 244,480
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 492 797
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 40,120 39,093
Fixed maturity securities 209,563 206,184
Corporate Debt Security Utilities Sector    
Gross Unrealized Gains and Losses [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 140,695 136,005
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 399 829
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 20,882 20,048
Fixed maturity securities 120,212 116,786
Corporate Debt Security Energy Sector    
Gross Unrealized Gains and Losses [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 84,244 82,205
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 215 473
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 7,791 7,622
Fixed maturity securities 76,668 75,056
Corporate Debt Security Communications Sector    
Gross Unrealized Gains and Losses [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 74,475 69,719
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 320 256
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 9,561 8,454
Fixed maturity securities 65,234 61,521
Corporate Debt Security All Other Sector    
Gross Unrealized Gains and Losses [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 123,430 122,240
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 392 764
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 16,376 16,027
Fixed maturity securities 107,446 106,977
Commercial Mortgage Backed Securities    
Gross Unrealized Gains and Losses [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 10,368 8,872
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 1 24
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 99 2
Fixed maturity securities 10,270 8,894
Residential Mortgage Backed Securities    
Gross Unrealized Gains and Losses [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 106,044 111,243
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 5 28
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 9,130 8,183
Fixed maturity securities 96,919 103,088
Asset-backed Securities    
Gross Unrealized Gains and Losses [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 32,221 33,327
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 597 412
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax 663 530
Fixed maturity securities $ 32,155 $ 33,209