v3.26.3
Financial Instruments and Other Inventory Positions - Schedule of Gross Fair Market Value and Total Absolute Notional Contract Amount (Details) - Not Designated as Hedging Instrument - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Derivative    
Notional amount $ 714,077 $ 591,529
Balance Sheet Location [Axis]: us-gaap:FinancialInstrumentsOwnedAtFairValue    
Derivative    
Derivative Assets 27,940 8,096
Balance Sheet Location [Axis]: us-gaap:FinancialInstrumentsSoldNotYetPurchasedAtFairValue    
Derivative    
Derivative Liabilities 14,486 10,573
Customer matched-book | Interest rate derivate contract    
Derivative    
Notional amount 370,230 355,129
Customer matched-book | Interest rate derivate contract | Balance Sheet Location [Axis]: us-gaap:FinancialInstrumentsOwnedAtFairValue    
Derivative    
Derivative Assets 9,885 7,033
Customer matched-book | Interest rate derivate contract | Balance Sheet Location [Axis]: us-gaap:FinancialInstrumentsSoldNotYetPurchasedAtFairValue    
Derivative    
Derivative Liabilities 7,927 4,878
Trading securities | Interest rate derivate contract    
Derivative    
Notional amount 343,847 236,400
Trading securities | Interest rate derivate contract | Balance Sheet Location [Axis]: us-gaap:FinancialInstrumentsOwnedAtFairValue    
Derivative    
Derivative Assets 18,055 1,063
Trading securities | Interest rate derivate contract | Balance Sheet Location [Axis]: us-gaap:FinancialInstrumentsSoldNotYetPurchasedAtFairValue    
Derivative    
Derivative Liabilities $ 6,559 $ 5,695