v3.26.1
SEGMENTS - Assets Disaggregated by Geography Region (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]    
Segment assets $ 2,015,711 $ 2,008,279
Assets | Geographic Concentration Risk    
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]    
Concentration risk, percentage 100.00% 100.00%
Switzerland    
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]    
Segment assets $ 1,523,037 $ 1,495,145
Switzerland | Assets | Geographic Concentration Risk    
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]    
Concentration risk, percentage 75.60% 74.40%
U.S.    
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]    
Segment assets $ 166,177 $ 177,549
U.S. | Assets | Geographic Concentration Risk    
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]    
Concentration risk, percentage 8.20% 8.80%
Other    
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]    
Segment assets $ 326,497 $ 335,585
Other | Assets | Geographic Concentration Risk    
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]    
Concentration risk, percentage 16.20% 16.80%