v3.24.3
Segment Information (Financial Data by Segment) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Segment Reporting Information [Line Items]          
Net premiums earned $ 243,160 $ 242,420 $ 727,176 $ 730,068  
Net investment income 37,272 32,754 107,727 94,714  
Equity in earnings (loss) of unconsolidated subsidiaries 4,767 (61) 16,383 5,450  
Net investment gains (losses) 2,252 (4,202) (1,594) (1,344)  
Other income (expense) (2,198) 3,336 3,872 6,864  
Net losses and loss adjustment expenses (176,331) (208,891) (557,025) (605,245)  
Underwriting, policy acquisition and operating expenses (80,389) (74,014) (238,088) (218,779)  
SPC U.S. federal income tax benefit (expense) (377) 175 (1,043) (1,351)  
SPC dividend (expense) income (1,360) 2,518 (2,479) (3,171)  
Interest expense (5,698) (5,514) (17,004) (16,478)  
Income tax benefit (expense) (4,657) 4,655 (7,837) 3,901  
Segment results 16,441 (6,824) 30,088 (5,371)  
Goodwill impairment 0 44,110 0 44,110 $ 44,110
Contingent Consideration     (6,500) (5,500)  
Net income (loss) 16,441 (49,434) 36,575 (44,981)  
Depreciation and amortization, net of accretion 3,880 6,454 13,645 20,085  
Specialty P&C          
Segment Reporting Information [Line Items]          
Net premiums earned 188,704 195,772 562,137 562,206  
Workers' Compensation Insurance          
Segment Reporting Information [Line Items]          
Net premiums earned 41,829 39,885 124,692 121,706  
Segregated Portfolio Cell Reinsurance          
Segment Reporting Information [Line Items]          
Net premiums earned 12,627 6,763 40,347 46,156  
Operating segments | Specialty P&C          
Segment Reporting Information [Line Items]          
Net premiums earned 188,704 195,772 562,137 562,206  
Net investment income 0 0 0 0  
Equity in earnings (loss) of unconsolidated subsidiaries 0 0 0 0  
Net investment gains (losses) 0 0 0 0  
Other income (expense) 982 1,089 3,359 3,106  
Net losses and loss adjustment expenses (136,337) (162,677) (434,564) (476,187)  
Underwriting, policy acquisition and operating expenses (51,492) (49,395) (153,415) (140,949)  
SPC U.S. federal income tax benefit (expense) 0 0 0 0  
SPC dividend (expense) income 0 0 0 0  
Interest expense 0 0 0 0  
Income tax benefit (expense) 0 0 0 0  
Segment results 1,857 (15,211) (22,483) (51,824)  
Goodwill impairment      
Depreciation and amortization, net of accretion 2,065 2,728 6,784 7,927  
Operating segments | Workers' Compensation Insurance          
Segment Reporting Information [Line Items]          
Net premiums earned 41,829 39,885 124,692 121,706  
Net investment income 0 0 0 0  
Equity in earnings (loss) of unconsolidated subsidiaries 0 0 0 0  
Net investment gains (losses) 0 0 0 0  
Other income (expense) 537 333 1,483 1,565  
Net losses and loss adjustment expenses (32,193) (41,208) (95,980) (101,813)  
Underwriting, policy acquisition and operating expenses (14,383) (13,542) (44,008) (40,923)  
SPC U.S. federal income tax benefit (expense) 0 0 0 0  
SPC dividend (expense) income 0 0 0 0  
Interest expense 0 0 0 0  
Income tax benefit (expense) 0 0 0 0  
Segment results (4,210) (14,532) (13,813) (19,465)  
Goodwill impairment      
Depreciation and amortization, net of accretion 1,270 851 3,747 2,573  
Operating segments | Segregated Portfolio Cell Reinsurance          
Segment Reporting Information [Line Items]          
Net premiums earned 12,627 6,763 40,347 46,156  
Net investment income 1,009 601 2,687 1,625  
Equity in earnings (loss) of unconsolidated subsidiaries 0 0 0 0  
Net investment gains (losses) 599 (525) 2,327 1,830  
Other income (expense) 1 2 1 3  
Net losses and loss adjustment expenses (7,801) (5,006) (26,481) (27,245)  
Underwriting, policy acquisition and operating expenses (4,143) (3,668) (14,105) (15,241)  
SPC U.S. federal income tax benefit (expense) (377) 175 (1,043) (1,351)  
SPC dividend (expense) income (1,360) 2,518 (2,479) (3,171)  
Interest expense 0 0 0 0  
Income tax benefit (expense) 0 0 0 0  
Segment results 555 860 1,254 2,606  
Goodwill impairment      
Depreciation and amortization, net of accretion (671) 300 (1,661) (187)  
Operating segments | Corporate          
Segment Reporting Information [Line Items]          
Net premiums earned 0 0 0 0  
Net investment income 36,263 32,153 105,040 93,089  
Equity in earnings (loss) of unconsolidated subsidiaries 4,767 (61) 16,383 5,450  
Net investment gains (losses) 1,653 (3,677) (3,921) (3,174)  
Other income (expense) (2,747) 2,847 2,281 5,347  
Net losses and loss adjustment expenses 0 0 0 0  
Underwriting, policy acquisition and operating expenses (11,342) (8,344) (29,812) (24,823)  
SPC U.S. federal income tax benefit (expense) 0 0 0 0  
SPC dividend (expense) income 0 0 0 0  
Interest expense (5,698) (5,514) (17,004) (16,478)  
Income tax benefit (expense) (4,657) 4,655 (7,837) 3,901  
Segment results 18,239 22,059 65,130 63,312  
Goodwill impairment      
Depreciation and amortization, net of accretion 1,216 2,575 4,775 9,772  
Inter-segment Eliminations          
Segment Reporting Information [Line Items]          
Net premiums earned 0 0 0 0  
Net investment income 0 0 0 0  
Equity in earnings (loss) of unconsolidated subsidiaries 0 0 0 0  
Net investment gains (losses) 0 0 0 0  
Other income (expense) (971) (935) (3,252) (3,157)  
Net losses and loss adjustment expenses 0 0 0 0  
Underwriting, policy acquisition and operating expenses 971 935 3,252 3,157  
SPC U.S. federal income tax benefit (expense) 0 0 0 0  
SPC dividend (expense) income 0 0 0 0  
Interest expense 0 0 0 0  
Income tax benefit (expense) 0 0 0 0  
Segment results 0 0 0 0  
Goodwill impairment      
Depreciation and amortization, net of accretion $ 0 0 0 0  
Segment reconciling items          
Segment Reporting Information [Line Items]          
Goodwill impairment   (44,110)   (44,110)  
Contingent Consideration   $ 1,500 6,740 $ 4,500  
Transaction-related costs, net     $ (253)