v3.26.1
SEGMENT REPORTING - Schedule of Gross Premiums Written by Line of Business (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Segment Reporting Information      
Gross premiums written $ 227,938 $ 247,945  
Net premiums written 183,474 219,397  
Net premiums earned 154,145 168,463  
Net loss and LAE incurred (91,155) (122,884)  
Acquisition costs (48,962) (46,866)  
Other underwriting expenses (7,805) (6,358)  
Deposit interest expense, net (32) (149)  
Underwriting income (loss) 6,191 (7,794)  
Net investment income (loss) 6,731 8,287  
Corporate and other expenses (5,742) (4,672)  
Income (loss) from investment in Solasglas 33,689 32,197  
Foreign exchange gains (losses) (4,905) 4,355  
Interest expense (99) (1,464)  
Income before income tax 35,865 30,909  
Attritional losses (85,072) (91,651)  
Large event losses (3,572) 0  
CAT event losses (5,000) (27,015)  
Prior year favorable (adverse) loss development (2,489) 4,218  
Total net loss and LAE incurred 91,155 122,884  
Total allocated assets 2,269,272 2,152,096 $ 2,169,783
Operating Segments      
Segment Reporting Information      
Prior year favorable (adverse) loss development (2,489) 4,329  
Corporate      
Segment Reporting Information      
Gross premiums written (2) (230)  
Net premiums written (2) (183)  
Net premiums earned (2) (183)  
Net loss and LAE incurred 1 225  
Acquisition costs 0 48  
Other underwriting expenses 0 0  
Deposit interest expense, net 0 0  
Underwriting income (loss) (1) 90  
Net investment income (loss) 502 2,068  
Corporate and other expenses (5,020) (4,100)  
Income (loss) from investment in Solasglas 33,689 32,197  
Foreign exchange gains (losses) (4,905) 4,355  
Interest expense (99) (1,464)  
Income before income tax 24,166 33,146  
Attritional losses 1 114  
Large event losses 0 0  
CAT event losses 0 0  
Prior year favorable (adverse) loss development 0 (111)  
Total net loss and LAE incurred (1) (225)  
Total allocated assets 1,588,843 1,547,145  
Open Market | Operating Segments      
Segment Reporting Information      
Gross premiums written 180,347 220,709  
Net premiums written 151,295 195,609  
Net premiums earned 128,981 149,641  
Net loss and LAE incurred (75,230) (112,763)  
Acquisition costs (41,212) (40,881)  
Other underwriting expenses (5,743) (4,797)  
Deposit interest expense, net (32) (149)  
Underwriting income (loss) 6,764 (8,949)  
Net investment income (loss) 5,135 5,771  
Corporate and other expenses 0 0  
Income before income tax 11,899 (3,178)  
Attritional losses (69,505) (80,852)  
Large event losses (3,572) 0  
CAT event losses (5,000) (27,015)  
Prior year favorable (adverse) loss development (2,847) 4,896  
Total net loss and LAE incurred 75,230 112,763  
Total allocated assets 507,804 459,549  
Innovations | Operating Segments      
Segment Reporting Information      
Gross premiums written 47,593 27,466  
Net premiums written 32,181 23,971  
Net premiums earned 25,166 19,005  
Net loss and LAE incurred (15,926) (10,346)  
Acquisition costs (7,750) (6,033)  
Other underwriting expenses (2,062) (1,561)  
Deposit interest expense, net 0 0  
Underwriting income (loss) (572) 1,065  
Net investment income (loss) 1,094 448  
Corporate and other expenses (722) (572)  
Income before income tax (200) 941  
Attritional losses (15,568) (10,913)  
Large event losses 0 0  
CAT event losses 0 0  
Prior year favorable (adverse) loss development 358 (567)  
Total net loss and LAE incurred 15,926 10,346  
Total allocated assets $ 172,625 $ 145,402