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Derivative Instruments - Hedge Derivatives (Details) - USD ($)
 1 Months Ended 12 Months Ended
Oct. 13, 2022
Apr. 30, 2022
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Derivative [Line Items]          
Loss (gain) on cash flow hedges reclassified from other comprehensive income into net income, net of tax     $ (9,975,000) $ (9,645,000) $ 5,542,000
Amortization     2,800,000 1,600,000 2,300,000
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months     9,800,000    
Hedging derivative | Cash flow hedge          
Derivative [Line Items]          
Unrealized Gain (Loss) in Accumulated Other Comprehensive Income     1,002,000 (15,034,000) 65,426,000
Hedging derivative | Fair value hedge          
Derivative [Line Items]          
Amortization     1,900,000 3,500,000 4,300,000
Hedging derivative | Fair value hedge | Securities          
Derivative [Line Items]          
Derivative Instruments and Hedges, Assets     1,445,511,000 1,165,773,000  
Fair Value Hedging Adjustment     (56,056,000) 24,672,000  
Gain (Loss) on Fair Value Hedges Recognized in Earnings     80,728,000 42,642,000 (26,536,000)
Increase (Decrease) in Fair Value of Hedged Item in Interest Rate Fair Value Hedge     (80,728,000) (42,642,000) 26,536,000
Notional     1,420,724,000 1,031,490,000  
Fair Value Hedges, Net     56,056,000 [1] (24,672,000)  
Hedging derivative | Fair value hedge | Securities | LIBOR          
Derivative [Line Items]          
Forecasted Notional Amount of Interest Rate Derivatives     464,700,000    
Hedging derivative | Fair value hedge | Securities | Federal Funds Rate          
Derivative [Line Items]          
Forecasted Notional Amount of Interest Rate Derivatives     392,200,000    
Hedging derivative | Fair value hedge | Securities | Secured Overnight Financing Rate          
Derivative [Line Items]          
Forecasted Notional Amount of Interest Rate Derivatives     563,800,000    
Asset derivatives | Hedging derivative | Cash flow hedge          
Derivative [Line Items]          
Unrealized Gain (Loss) in Accumulated Other Comprehensive Income     1,002,000 (15,034,000) 62,979,000
Notional     1,750,000,000 0  
Cash Flow Hedges Derivative Instruments at Fair Value, Net     $ 94,175,000 0  
Asset derivatives | Hedging derivative | Fair value hedge | Securities          
Derivative [Line Items]          
Pay Rate (as percent)     2.25%    
Gain (Loss) on Fair Value Hedges Recognized in Earnings   $ 986,000      
Notional     $ 1,420,724,000 559,820,000  
Weighted Average Remaining Maturity Derivative     7 years 5 months 4 days    
Derivative, Underlying Basis     3 month LIBOR/Federal funds/SOFR    
Fair Value Hedge Assets     $ 56,056,000 [1] 15,109,000  
Derivative Asset, Statement of Financial Position [Extensible Enumeration]     Other assets    
Gain (Loss) on Fair Value Hedges to be Recognized in Earnings   11,600,000      
Terminated Fair Value Amount of Interest Rate Derivatives   14,300,000      
Terminated Notional Amount of Interest Rate Derivatives   $ 164,300,000      
Asset derivatives | Hedging derivative | Interest Rate Floor          
Derivative [Line Items]          
Receive Rate     N/A    
Notional     $ 875,000,000 0  
Cash Flow Hedges Derivative Instruments at Fair Value, Net     $ 48,622,000 $ 0  
Weighted Average Remaining Maturity Derivative     4 years 10 months 2 days    
Derivative, Type of Interest Received     4.00%-4.50% minus USD-Term SOFR 1M    
Derivative Asset, Statement of Financial Position [Extensible Enumeration]     Other assets Other assets  
Asset derivatives | Hedging derivative | Interest Rate Contract          
Derivative [Line Items]          
Receive Rate     USD-Term SOFR 1M minus 6.75%-7.00%    
Notional     $ 875,000,000 $ 0  
Cash Flow Hedges Derivative Instruments at Fair Value, Net     $ 45,553,000 $ 0  
Weighted Average Remaining Maturity Derivative     4 years 10 months 2 days    
Derivative, Type of Interest Received     4.25%-4.75% minus USD-Term SOFR 1M    
Derivative Asset, Statement of Financial Position [Extensible Enumeration]     Other assets Other assets  
Liability derivatives | Hedging derivative | Cash flow hedge          
Derivative [Line Items]          
Unrealized Gain (Loss) in Accumulated Other Comprehensive Income     $ 0 $ 0 $ 2,447,000
Liability derivatives | Hedging derivative | Fair value hedge | Securities          
Derivative [Line Items]          
Pay Rate (as percent)     0.00%    
Notional     $ 0 471,670,000  
Weighted Average Remaining Maturity Derivative     0 years    
Derivative, Underlying Basis     N/A    
Fair Value Hedge Liabilities     $ 0 [1] $ (39,781,000)  
Derivative Liability, Statement of Financial Position [Extensible Enumeration]     Other liabilities    
Cash flow hedge | Hedging derivative          
Derivative [Line Items]          
Notional $ 1,800,000,000        
Derivative, Cost of Hedge $ 95,700,000        
[1] The variation margin payments for derivatives cleared through central clearing houses are characterized as settlements. At December 31, 2022, the notional amount of fair value derivatives hedges cleared through clearing houses is $877.7 million with a fair value that approximates zero due to $47.9 million in received variation margin payments.