XML 118 R108.htm IDEA: XBRL DOCUMENT v3.22.2
Fair Value - Carrying Amounts and Estimated Fair Values of Financial Instruments, Not Carried at Fair Value (Details) - USD ($)
Jun. 30, 2022
Dec. 31, 2021
Jun. 30, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash, due from banks, money market,    and other interest-earning investments $ 797,964,000 $ 822,019,000  
Investment securities held to maturity 3,084,186,000 0  
Loans, net 29,265,645,000 13,494,505,000  
Accrued interest receivable 157,079,000 84,109,000  
Noninterest-bearing demand deposits 12,388,379,000 6,303,106,000  
Time deposits 2,507,616,000 960,413,000  
Federal funds purchased and interbank borrowings 1,561,000 276,000  
Securities sold under agreements to repurchase 476,173,000 392,275,000 $ 396,129,000
Federal Home Loan Bank advances 3,283,963,000 1,886,019,000  
Other borrowings 622,714,000 296,670,000  
U.S. government-sponsored entities and agencies      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment securities held to maturity 815,833,000    
Mortgage-backed securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment securities held to maturity 1,149,212,000    
States and political subdivisions      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment securities held to maturity 1,119,292,000    
Carrying Value      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash, due from banks, money market,    and other interest-earning investments 797,964,000 822,019,000  
Accrued interest receivable 157,079,000 84,109,000  
Noninterest-bearing demand deposits 12,388,379,000 6,303,106,000  
Checking, NOW, savings, and money market    interest-bearing deposits 20,642,980,000 11,305,676,000  
Time deposits 2,507,616,000 960,413,000  
Federal funds purchased and interbank borrowings 1,561,000 276,000  
Securities sold under agreements to repurchase 476,173,000 392,275,000  
Federal Home Loan Bank advances 3,283,963,000 1,886,019,000  
Other borrowings 622,714,000 296,670,000  
Accrued interest payable 10,148,000 5,496,000  
Standby letters of credit 450,000 454,000  
Commitments to extend credit 0 0  
Carrying Value | U.S. government-sponsored entities and agencies      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment securities held to maturity 815,833,000    
Carrying Value | Mortgage-backed securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment securities held to maturity 1,149,212,000    
Carrying Value | States and political subdivisions      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment securities held to maturity 1,119,141,000    
Carrying Value | Commercial      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans, net 8,819,983,000 3,363,175,000  
Carrying Value | Commercial real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans, net 11,653,818,000 6,315,574,000  
Carrying Value | Residential real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans, net 6,059,328,000 2,245,942,000  
Carrying Value | Consumer credit      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans, net 2,732,516,000 1,569,814,000  
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash, due from banks, money market,    and other interest-earning investments 797,964,000 822,019,000  
Accrued interest receivable 699,000 688,000  
Noninterest-bearing demand deposits 12,388,379,000 6,303,106,000  
Checking, NOW, savings, and money market    interest-bearing deposits 20,642,980,000 11,305,676,000  
Time deposits 0 0  
Federal funds purchased and interbank borrowings 1,561,000 276,000  
Securities sold under agreements to repurchase 476,173,000 392,275,000  
Federal Home Loan Bank advances 0 0  
Other borrowings 0 0  
Accrued interest payable 0 0  
Standby letters of credit 0 0  
Commitments to extend credit 0 0  
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government-sponsored entities and agencies      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment securities held to maturity 0    
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment securities held to maturity 0    
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | States and political subdivisions      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment securities held to maturity 0    
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans, net 0 0  
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans, net 0 0  
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Residential real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans, net 0 0  
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1) | Consumer credit      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans, net 0 0  
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash, due from banks, money market,    and other interest-earning investments 0 0  
Accrued interest receivable 51,770,000 35,790,000  
Noninterest-bearing demand deposits 0 0  
Checking, NOW, savings, and money market    interest-bearing deposits 0 0  
Time deposits 2,476,746,000 968,658,000  
Federal funds purchased and interbank borrowings 0 0  
Securities sold under agreements to repurchase 0 0  
Federal Home Loan Bank advances 3,257,920,000 1,935,140,000  
Other borrowings 573,849,000 311,532,000  
Accrued interest payable 10,148,000 5,496,000  
Standby letters of credit 0 0  
Commitments to extend credit 0 0  
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | U.S. government-sponsored entities and agencies      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment securities held to maturity 720,435,000    
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment securities held to maturity 1,089,442,000    
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | States and political subdivisions      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment securities held to maturity 969,413,000    
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Commercial      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans, net 0 0  
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Commercial real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans, net 0 0  
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Residential real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans, net 0 0  
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2) | Consumer credit      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans, net 0 0  
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash, due from banks, money market,    and other interest-earning investments 0 0  
Accrued interest receivable 104,610,000 47,631,000  
Noninterest-bearing demand deposits 0 0  
Checking, NOW, savings, and money market    interest-bearing deposits 0 0  
Time deposits 0 0  
Federal funds purchased and interbank borrowings 0 0  
Securities sold under agreements to repurchase 0 0  
Federal Home Loan Bank advances 0 0  
Other borrowings 0 0  
Accrued interest payable 0 0  
Standby letters of credit 450,000 454,000  
Commitments to extend credit 2,610,000 4,678,000  
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | U.S. government-sponsored entities and agencies      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment securities held to maturity 0    
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Mortgage-backed securities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment securities held to maturity 0    
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | States and political subdivisions      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Investment securities held to maturity 0    
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Commercial      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans, net 8,837,714,000 3,335,009,000  
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Commercial real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans, net 11,711,358,000 6,211,854,000  
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Residential real estate      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans, net 5,740,944,000 2,216,900,000  
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3) | Consumer credit      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Loans, net $ 2,880,432,000 $ 1,582,600,000