v3.26.1
Segment Information (Schedule of Segment Reporting Information, by Segment) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Segment Reporting [Line Items]    
Net premiums earned $ 223,505 $ 236,275
Net investment income 39,972 36,951
Equity in earnings (loss) of unconsolidated subsidiaries 2,938 4,015
Net investment gains (losses) (3,425) (1,693)
Other income (expense) (356) (3,469)
Net losses and loss adjustment expenses (174,194) (189,960)
Operating expenses (39,514) (43,753)
Deferred policy acquisition costs and amortization (31,592) (32,381)
SPC U.S. federal income tax benefit (expense) (549) (348)
SPC dividend (expense) income (1,079) 248
Interest expense (5,090) (5,160)
Income tax benefit (expense) (732) (229)
Segment results 9,884 496
Net income (loss) 8,461 (5,822)
Depreciation and amortization, net of accretion 2,912 3,822
Income tax benefit 732 (510)
NORCAL Group    
Segment Reporting [Line Items]    
Income tax benefit 0 700
Specialty P&C    
Segment Reporting [Line Items]    
Net premiums earned 172,081 183,254
Workers' Compensation Insurance    
Segment Reporting [Line Items]    
Net premiums earned 40,665 41,524
Segregated Portfolio Cell Reinsurance    
Segment Reporting [Line Items]    
Net premiums earned 10,759 11,497
Operating segments | Specialty P&C    
Segment Reporting [Line Items]    
Net premiums earned 172,081 183,254
Net investment income 0 0
Equity in earnings (loss) of unconsolidated subsidiaries 0 0
Net investment gains (losses) 0 0
Other income (expense) 915 3,766
Net losses and loss adjustment expenses (137,586) (152,247)
Operating expenses (20,425) (24,102)
Deferred policy acquisition costs and amortization (24,115) (24,533)
SPC U.S. federal income tax benefit (expense) 0 0
SPC dividend (expense) income 0 0
Interest expense 0 0
Income tax benefit (expense) 0 0
Segment results (9,130) (13,862)
Depreciation and amortization, net of accretion 1,298 2,168
Operating segments | Workers' Compensation Insurance    
Segment Reporting [Line Items]    
Net premiums earned 40,665 41,524
Net investment income 0 0
Equity in earnings (loss) of unconsolidated subsidiaries 0 0
Net investment gains (losses) 0 0
Other income (expense) 362 390
Net losses and loss adjustment expenses (31,309) (30,153)
Operating expenses (10,725) (11,081)
Deferred policy acquisition costs and amortization (4,351) (4,522)
SPC U.S. federal income tax benefit (expense) 0 0
SPC dividend (expense) income 0 0
Interest expense 0 0
Income tax benefit (expense) 0 0
Segment results (5,358) (3,842)
Depreciation and amortization, net of accretion 1,262 1,271
Operating segments | Segregated Portfolio Cell Reinsurance    
Segment Reporting [Line Items]    
Net premiums earned 10,759 11,497
Net investment income 961 816
Equity in earnings (loss) of unconsolidated subsidiaries 0 0
Net investment gains (losses) (569) (335)
Other income (expense) 1 (1)
Net losses and loss adjustment expenses (5,299) (7,560)
Operating expenses (363) (531)
Deferred policy acquisition costs and amortization (3,378) (3,604)
SPC U.S. federal income tax benefit (expense) (549) (348)
SPC dividend (expense) income (1,079) 248
Interest expense 0 0
Income tax benefit (expense) 0 0
Segment results 484 182
Depreciation and amortization, net of accretion (511) (450)
Operating segments | Corporate    
Segment Reporting [Line Items]    
Net premiums earned 0 0
Net investment income 39,011 36,135
Equity in earnings (loss) of unconsolidated subsidiaries 2,938 4,015
Net investment gains (losses) (2,856) (1,358)
Other income (expense) (1,046) (7,283)
Net losses and loss adjustment expenses 0 0
Operating expenses (8,337) (8,102)
Deferred policy acquisition costs and amortization 0 0
SPC U.S. federal income tax benefit (expense) 0 0
SPC dividend (expense) income 0 0
Interest expense (5,090) (5,160)
Income tax benefit (expense) (732) (229)
Segment results 23,888 18,018
Depreciation and amortization, net of accretion 863 833
Inter-segment Eliminations    
Segment Reporting [Line Items]    
Net premiums earned 0 0
Net investment income 0 0
Equity in earnings (loss) of unconsolidated subsidiaries 0 0
Net investment gains (losses) 0 0
Other income (expense) (588) (341)
Net losses and loss adjustment expenses 0 0
Operating expenses 336 63
Deferred policy acquisition costs and amortization 252 278
SPC U.S. federal income tax benefit (expense) 0 0
SPC dividend (expense) income 0 0
Interest expense 0 0
Income tax benefit (expense) 0 0
Segment results 0 0
Depreciation and amortization, net of accretion 0 0
Segment reconciling items    
Segment Reporting [Line Items]    
Transaction-related costs, net (1,423) (6,318)
Pre-tax transaction related costs $ 1,400 $ 7,100