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Derivative Financial Instruments - Summary of Fair Value of Derivative Financial Instruments (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Designated as Hedging Instrument    
Derivative [Line Items]    
Assets $ 2,169 $ 11,764
Liabilities 15,563 47,859
Designated as Hedging Instrument | Cash flow hedges | Interest rate collars and floors on loan pools    
Derivative [Line Items]    
Notional 1,400,000 1,900,000
Assets 2,169 11,764
Liabilities 15,563 47,859
Designated as Hedging Instrument | Cash flow hedges | Interest rate swaps on borrowings    
Derivative [Line Items]    
Notional 250,000 150,000
Assets 0 0
Liabilities 0 0
Designated as Hedging Instrument | Fair value hedges | Interest rate swaps on borrowings    
Derivative [Line Items]    
Notional 700,000 300,000
Assets 0 0
Liabilities 0 0
Designated as Hedging Instrument | Fair value hedges | Interest rate swaps on investment securities    
Derivative [Line Items]    
Notional 909,957 909,957
Assets 0 0
Liabilities 0 0
Not Designated as Hedging Instrument    
Derivative [Line Items]    
Assets 182,155 157,237
Liabilities 324,836 332,845
Not Designated as Hedging Instrument | Interest rate lock commitments    
Derivative [Line Items]    
Notional 45,216 21,401
Assets 330 93
Liabilities 0 0
Not Designated as Hedging Instrument | Forward mortgage loan contracts    
Derivative [Line Items]    
Notional 61,084 30,330
Assets 164 32
Liabilities 0 0
Not Designated as Hedging Instrument | Customer interest rate swaps    
Derivative [Line Items]    
Notional 5,589,059 5,220,363
Assets 5,621 5,676
Liabilities 318,890 326,924
Not Designated as Hedging Instrument | Counterparty interest rate swaps    
Derivative [Line Items]    
Notional 8,206,655 5,220,363
Assets 175,581 151,111
Liabilities 5,662 5,711
Not Designated as Hedging Instrument | Customer foreign currency forward contracts    
Derivative [Line Items]    
Notional 12,851 8,341
Assets 441 253
Liabilities 22 42
Not Designated as Hedging Instrument | Counterparty foreign currency forward contracts    
Derivative [Line Items]    
Notional 12,894 8,297
Assets 18 72
Liabilities $ 262 $ 168