v3.26.1
SEGMENT REPORTING - Schedule of Gross Premiums Written by Line of Business (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Segment Reporting          
Gross premiums written $ 183,118 $ 179,628 $ 411,056 $ 427,573  
Net premiums written 146,809 164,527 330,283 383,924  
Net premiums earned 161,813 161,641 315,958 330,104  
Net loss and LAE incurred (112,083) (100,079) (203,238) (222,963)  
Acquisition costs (44,034) (46,848) (92,996) (93,714)  
Other underwriting expenses (5,886) (6,481) (13,691) (12,839)  
Deposit interest expense, net (46) (124) (78) (273)  
Underwriting income (loss) (236) 8,109 5,955 315  
Net investment income (loss) 4,076 10,470 10,807 18,757  
Corporate and other expenses (4,717) (4,755) (10,459) (9,427)  
Income (loss) from investment in Solasglas (27,857) (18,276) 5,832 13,921  
Foreign exchange gains (losses) (576) 6,271 (5,481) 10,626  
Other income       0  
Interest expense (128) (1,144) (227) (2,608)  
Income before income tax (29,438) 675 6,427 31,584  
Attritional losses (83,632) (90,633) (168,704) (181,592)  
Large event losses (1,224) (6,399) (4,796) (7,090)  
CAT event losses (26,511) 0 (31,511) (27,016)  
Prior year favorable (adverse) loss development 716 3,047 (1,773) 7,265  
Total net loss and LAE incurred 112,083 100,079 203,238 222,963  
Total allocated assets 2,238,584 2,188,024 2,238,584 2,188,024 $ 2,169,783
Operating Segments          
Segment Reporting          
Prior year favorable (adverse) loss development     (3,536) 5,919  
Corporate          
Segment Reporting          
Gross premiums written 0 (301) (2) (531)  
Net premiums written 0 (300) (2) (483)  
Net premiums earned 0 (299) (2) (482)  
Net loss and LAE incurred (1,763) (1,360) (1,762) (1,135)  
Acquisition costs 0 64 0 112  
Other underwriting expenses 0 0 0 0  
Deposit interest expense, net 0 0 0 0  
Underwriting income (loss) (1,763) (1,595) (1,764) (1,505)  
Net investment income (loss) 146 4,410 648 6,478  
Corporate and other expenses (4,138) (4,153) (9,158) (8,253)  
Income (loss) from investment in Solasglas (27,857) (18,276) 5,832 13,921  
Foreign exchange gains (losses) (576) 6,271 (5,481) 10,626  
Other income       0  
Interest expense (128) (1,144) (227) (2,608)  
Income before income tax (34,316) (14,487) (10,150) 18,659  
Attritional losses 0 97 1 211  
Large event losses 0 0 0 0  
CAT event losses 0 0 0 0  
Prior year favorable (adverse) loss development 1,763 1,457 1,763 1,346  
Total net loss and LAE incurred 1,763 1,360 1,762 1,135  
Total allocated assets 1,500,732 1,556,496 1,500,732 1,556,496  
Open Market | Operating Segments          
Segment Reporting          
Gross premiums written 152,202 152,333 332,549 373,042  
Net premiums written 128,249 142,111 279,544 337,720  
Net premiums earned 136,945 140,554 265,926 290,195  
Net loss and LAE incurred (94,945) (83,475) (170,175) (196,238)  
Acquisition costs (38,399) (40,900) (79,611) (81,781)  
Other underwriting expenses (4,602) (4,861) (10,345) (9,658)  
Deposit interest expense, net (46) (124) (78) (273)  
Underwriting income (loss) (1,047) 11,194 5,717 2,245  
Net investment income (loss) 4,409 5,629 9,544 11,400  
Corporate and other expenses 0 0 0 0  
Income before income tax 3,362 16,823 15,261 13,645  
Attritional losses (70,055) (78,017) (139,560) (158,177)  
Large event losses (1,224) (6,399) (4,796) (7,090)  
CAT event losses (26,511) 0 (31,511) (27,016)  
Prior year favorable (adverse) loss development (2,845) (941) (5,692) 3,955  
Total net loss and LAE incurred 94,945 83,475 170,175 196,238  
Total allocated assets 557,049 485,330 557,049 485,330  
Innovations | Operating Segments          
Segment Reporting          
Gross premiums written 30,916 27,596 78,509 55,062  
Net premiums written 18,560 22,716 50,741 46,687  
Net premiums earned 24,868 21,386 50,034 40,391  
Net loss and LAE incurred (15,375) (15,244) (31,301) (25,590)  
Acquisition costs (5,635) (6,012) (13,385) (12,045)  
Other underwriting expenses (1,284) (1,620) (3,346) (3,181)  
Deposit interest expense, net 0 0 0 0  
Underwriting income (loss) 2,574 (1,490) 2,002 (425)  
Net investment income (loss) (479) 431 615 879  
Corporate and other expenses (579) (602) (1,301) (1,174)  
Income before income tax 1,516 (1,661) 1,316 (720)  
Attritional losses (13,577) (12,713) (29,145) (23,626)  
Large event losses 0 0 0 0  
CAT event losses 0 0 0 0  
Prior year favorable (adverse) loss development 1,798 2,531 2,156 1,964  
Total net loss and LAE incurred 15,375 15,244 31,301 25,590  
Total allocated assets $ 180,803 $ 146,198 $ 180,803 $ 146,198