SEGMENT INFORMATION - Business Segment Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Business segment assets	$ 1,575,371	$ 1,597,211
Operating Segments | HNH
Segment Reporting Information [Line Items]
Business segment assets	1,185,962	1,180,527
Operating Segments | ANH
Segment Reporting Information [Line Items]
Business segment assets	161,243	166,994
Operating Segments | SP
Segment Reporting Information [Line Items]
Business segment assets	161,283	168,307
Other and Unallocated
Segment Reporting Information [Line Items]
Business segment assets	$ 66,883	$ 81,383