SEGMENT REPORTING - Long-lived assets by geographic areas (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Segment Reporting Information
Total long-lived assets by geographic area	$ 244.1	$ 242.5
United States
Segment Reporting Information
Total long-lived assets by geographic area	184.5	182.7
United Kingdom
Segment Reporting Information
Total long-lived assets by geographic area	30.0	23.8
Other
Segment Reporting Information
Total long-lived assets by geographic area	$ 29.6	$ 36.0