v3.26.1
Financial Instruments and Fair Value Measurements - Level 3 Financial Instruments (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Beginning balance $ 80,561 $ 85,009 $ 86,491 $ 75,843
Purchases 0 0 0 0
Total realized and unrealized gains / (losses) 5,342 981 (588) 10,147
Net Transfers into (out of) Level 3 0 0 0 0
Settlement 0 0 0 0
Ending balance 85,903 85,990 85,903 85,990
Change in net unrealized gains / (losses) on investments still held at end of period 5,342 981 (588) 10,147
Equity investment        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Beginning balance 80,561 85,009 86,491 75,843
Purchases 0 0 0 0
Total realized and unrealized gains / (losses) 5,342 981 (588) 10,147
Net Transfers into (out of) Level 3 0 0 0 0
Settlement 0 0 0 0
Ending balance 85,903 85,990 85,903 85,990
Change in net unrealized gains / (losses) on investments still held at end of period 5,342 981 (588) 10,147
Other        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Beginning balance 0 0    
Purchases 0 0    
Total realized and unrealized gains / (losses) 0 0    
Net Transfers into (out of) Level 3 0 0    
Settlement 0 0    
Ending balance 0 0 $ 0 $ 0
Change in net unrealized gains / (losses) on investments still held at end of period $ 0 $ 0