v3.26.1
Arbitrage Trading Account (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Derivative [Line Items]    
Arbitrage trading account $ 1,292,382 $ 1,221,103
Long | Options held    
Derivative [Line Items]    
Fair value of derivative 5,000  
Notional amount of derivative 87,000  
Short | Options held    
Derivative [Line Items]    
Fair value of derivative 7,000  
Notional amount of derivative $ 88,000