LOSS AND LOSS ADJUSTMENT EXPENSE RESERVES - Schedule of Net Prior Year Reserve Development By Segment (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Liability for Claims and Claims Adjustment Expense
Prior years	$ (4,218)	$ (5,401)	$ (4,218)	$ (5,401)
Operating Segments
Liability for Claims and Claims Adjustment Expense
Prior years	(4,329)	(1,472)
Operating Segments \| Open Market
Liability for Claims and Claims Adjustment Expense
Prior years	(4,896)	(1,473)	(4,896)	(1,473)
Operating Segments \| Innovations
Liability for Claims and Claims Adjustment Expense
Prior years	567	1	567	1
Corporate
Liability for Claims and Claims Adjustment Expense
Prior years	$ 111	$ (3,929)	$ 111	$ (3,929)