XML 70 R58.htm IDEA: XBRL DOCUMENT v3.25.2
Fair Value of Financial Instruments (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Dec. 31, 2023
Assets, Fair Value Disclosure [Abstract]                
Servicing Asset at Fair Value, Amount $ 10,903,000 $ 11,301,000 $ 10,903,000 $ 11,301,000 $ 11,215,000 $ 11,854,000 $ 11,812,000 $ 0
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Abstract]                
Servicing Asset 0 0 0 0     $ 11,812,000  
Available-for-sale Securities                
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Abstract]                
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3       1        
Recurring                
Assets, Fair Value Disclosure [Abstract]                
U.S. Treasury securities 1,535,156,000   1,535,156,000     1,405,478,000    
U.S. Government agency securities 204,185,000   204,185,000     214,066,000    
Mortgage-backed securities 2,698,707,000   2,698,707,000     1,962,359,000    
State and municipal securities 1,625,259,000   1,625,259,000     1,506,557,000    
Agency-backed securities 209,000   209,000     45,338,000    
Corporate notes and other 315,172,000   315,172,000     448,571,000    
Total investment securities available-for-sale 6,378,688,000   6,378,688,000     5,582,369,000    
Other Investments 221,972,000   221,972,000     198,721,000    
Servicing Asset at Fair Value, Amount 10,903,000   10,903,000     11,854,000    
Other assets 177,078,000   177,078,000     177,100,000    
Total assets at fair value 6,788,641,000   6,788,641,000     5,970,044,000    
Liabilities at fair value: [Abstract]                
Other liabilities 64,429,000   64,429,000     98,311,000    
Total liabilities at fair value 64,429,000   64,429,000     98,311,000    
Recurring | Available-for-sale Securities                
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Abstract]                
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 0 $ 0 0 $ 12,841,000        
Recurring | Quoted market prices in an active market (Level 1)                
Assets, Fair Value Disclosure [Abstract]                
U.S. Treasury securities 0   0     0    
U.S. Government agency securities 0   0     0    
Mortgage-backed securities 0   0     0    
State and municipal securities 0   0     0    
Agency-backed securities 0   0     0    
Corporate notes and other 0   0     0    
Total investment securities available-for-sale 0   0     0    
Other Investments 0   0     0    
Servicing Asset at Fair Value, Amount 0   0     0    
Other assets 0   0     0    
Total assets at fair value 0   0     0    
Liabilities at fair value: [Abstract]                
Other liabilities 0   0     0    
Total liabilities at fair value 0   0     0    
Recurring | Models with significant observable market parameters (Level 2)                
Assets, Fair Value Disclosure [Abstract]                
U.S. Treasury securities 1,535,156,000   1,535,156,000     1,405,478,000    
U.S. Government agency securities 204,185,000   204,185,000     214,066,000    
Mortgage-backed securities 2,698,707,000   2,698,707,000     1,962,359,000    
State and municipal securities 1,625,087,000   1,625,087,000     1,506,222,000    
Agency-backed securities 209,000   209,000     45,338,000    
Corporate notes and other 302,258,000   302,258,000     435,682,000    
Total investment securities available-for-sale 6,365,602,000   6,365,602,000     5,569,145,000    
Other Investments 22,552,000   22,552,000     22,170,000    
Servicing Asset at Fair Value, Amount 0   0     0    
Other assets 177,078,000   177,078,000     177,100,000    
Total assets at fair value 6,565,232,000   6,565,232,000     5,768,415,000    
Liabilities at fair value: [Abstract]                
Other liabilities 64,429,000   64,429,000     98,311,000    
Total liabilities at fair value 64,429,000   64,429,000     98,311,000    
Recurring | Models with significant unobservable market parameters (Level 3)                
Assets, Fair Value Disclosure [Abstract]                
U.S. Treasury securities 0   0     0    
U.S. Government agency securities 0   0     0    
Mortgage-backed securities 0   0     0    
State and municipal securities 172,000   172,000     335,000    
Agency-backed securities 0   0     0    
Corporate notes and other 12,914,000   12,914,000     12,889,000    
Total investment securities available-for-sale 13,086,000   13,086,000     13,224,000    
Other Investments 199,420,000   199,420,000     176,551,000    
Servicing Asset at Fair Value, Amount 10,903,000   10,903,000     11,854,000    
Other assets 0   0     0    
Total assets at fair value 223,409,000   223,409,000     201,629,000    
Liabilities at fair value: [Abstract]                
Other liabilities 0   0     0    
Total liabilities at fair value 0   0     0    
Nonrecurring                
Assets, Fair Value Disclosure [Abstract]                
Total assets at fair value 121,811,000   121,811,000     85,551,000    
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Abstract]                
Other real estate owned 4,835,000   4,835,000     1,278,000    
Financing Receivable, Collateral Dependent [1] 116,976,000   116,976,000     84,273,000    
Nonrecurring | Quoted market prices in an active market (Level 1)                
Assets, Fair Value Disclosure [Abstract]                
Total assets at fair value 0   0     0    
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Abstract]                
Other real estate owned 0   0     0    
Financing Receivable, Collateral Dependent [1] 0   0     0    
Nonrecurring | Models with significant observable market parameters (Level 2)                
Assets, Fair Value Disclosure [Abstract]                
Total assets at fair value 0   0     0    
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Abstract]                
Other real estate owned 0   0     0    
Financing Receivable, Collateral Dependent [1] 0   0     0    
Nonrecurring | Models with significant unobservable market parameters (Level 3)                
Assets, Fair Value Disclosure [Abstract]                
Total assets at fair value 121,811,000   121,811,000     85,551,000    
Fair Value Assets And Liabilities Measured On Nonrecurring Basis [Abstract]                
Other real estate owned 4,835,000   4,835,000     1,278,000    
Financing Receivable, Collateral Dependent [1] $ 116,976,000   $ 116,976,000     $ 84,273,000    
[1] The carrying values of collateral dependent loans at June 30, 2025 and December 31, 2024 are net of valuation allowances of $39.9 million and $54.7 million, respectively.