LOSS AND LOSS ADJUSTMENT EXPENSE RESERVES - Schedule of Net Prior Year Reserve Development by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Liability for Claims and Claims Adjustment Expense
Prior years	$ (3,047)	$ 689	$ (7,265)	$ (4,712)
Operating Segments
Liability for Claims and Claims Adjustment Expense
Prior years			(5,919)	109
Operating Segments \| Open Market
Liability for Claims and Claims Adjustment Expense
Prior years	941	(60)	(3,955)	(1,533)
Operating Segments \| Innovations
Liability for Claims and Claims Adjustment Expense
Prior years	(2,531)	1,641	(1,964)	1,642
Corporate
Liability for Claims and Claims Adjustment Expense
Prior years	$ (1,457)	$ (892)	$ (1,346)	$ (4,821)