v3.25.4
Segment Information - Financial Data by Segment (Details) - Operating Segments [Member] - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Revenues:      
Net premiums earned $ 921,184 $ 936,651 $ 882,071
Net investment income 52,627 44,918 40,853
Investment gains (losses) 619 4,981 3,173
Total segment revenues 974,430 986,550 926,097
Other 3,584 3,055 1,241
Total revenues 978,014 989,605 927,338
Segment expenses:      
Net losses and loss expenses 564,371 608,271 612,071
Other underwriting expenses 305,280 312,742 306,803
Policyholder dividends 3,011 4,073 5,313
Total expenses 872,662 925,086 924,187
SAP underwriting income (loss) 48,522 11,565 (42,116)
GAAP adjustments (5,849) 1,331 3,735
GAAP underwriting income (loss) 42,673 12,896 (38,381)
Other 1,674 (456) (582)
Income before income tax expense 97,593 62,339 5,063
Investments [Member]      
Revenues:      
Net premiums earned 0 0 0
Net investment income 52,627 44,918 40,853
Investment gains (losses) 619 4,981 3,173
Total segment revenues 53,246 49,899 44,026
Segment expenses:      
Net losses and loss expenses 0 0 0
Other underwriting expenses 0 0 0
Policyholder dividends 0 0 0
Total expenses 0 0 0
SAP underwriting income (loss) 0 0 0
Commercial Lines [Member]      
Revenues:      
Net premiums earned 555,873 539,683 533,029
Net investment income 0 0 0
Investment gains (losses) 0 0 0
Total segment revenues 555,873 539,683 533,029
Segment expenses:      
Net losses and loss expenses 345,493 336,353 346,177
Other underwriting expenses 202,697 193,431 188,537
Policyholder dividends 3,011 4,073 5,313
Total expenses 551,201 533,857 540,027
SAP underwriting income (loss) 4,672 5,826 (6,998)
Personal Lines [Member]      
Revenues:      
Net premiums earned 365,311 396,968 349,042
Net investment income 0 0 0
Investment gains (losses) 0 0 0
Total segment revenues 365,311 396,968 349,042
Segment expenses:      
Net losses and loss expenses 218,878 271,918 265,894
Other underwriting expenses 102,583 119,311 118,266
Policyholder dividends 0 0 0
Total expenses 321,461 391,229 384,160
SAP underwriting income (loss) $ 43,850 $ 5,739 $ (35,118)