XML 89 R48.htm IDEA: XBRL DOCUMENT v3.22.4
Summary of Significant Accounting Policies (Details)
3 Months Ended 12 Months Ended
Mar. 01, 2022
USD ($)
Mar. 01, 2016
USD ($)
Dec. 31, 2022
USD ($)
market
$ / shares
shares
Sep. 30, 2022
USD ($)
$ / shares
Jun. 30, 2022
USD ($)
$ / shares
Mar. 31, 2022
USD ($)
$ / shares
Dec. 31, 2021
USD ($)
$ / shares
shares
Sep. 30, 2021
USD ($)
$ / shares
Jun. 30, 2021
USD ($)
$ / shares
Mar. 31, 2021
USD ($)
$ / shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Sep. 30, 2020
USD ($)
$ / shares
Jun. 30, 2020
USD ($)
$ / shares
Mar. 31, 2020
USD ($)
$ / shares
Dec. 31, 2022
USD ($)
market
$ / shares
shares
Dec. 31, 2021
USD ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2018
USD ($)
Dec. 31, 2019
shares
Dec. 31, 2017
Accounting Policies [Abstract]                                        
Number of Markets in Which Entity Operates | market     17                       17          
Schedule of Equity Method Investments [Line Items]                                        
Gain on remeasurement of previously held noncontrolling interest                             $ 5,500,000 $ 0 $ 0      
Goodwill [Roll Forward]                                        
Balance at December 31, 2020           $ 1,819,811,000                 1,819,811,000          
Goodwill, Acquired During Period                             27,162,000          
Balance at December 31, 2021     $ 1,846,973,000       $ 1,819,811,000               1,846,973,000 1,819,811,000        
Finite-lived Intangible Assets [Roll Forward]                                        
Balance at December 31, 2020           33,819,000                 33,819,000          
Acquisitions                             8,546,000          
Amortization                             (7,810,000) (8,518,000) (9,793,000)      
Balance at December 31, 2021     34,555,000       33,819,000               34,555,000 33,819,000        
Balance at December 31, 2020           1,853,630,000                 1,853,630,000          
Acquisitions                             35,708,000          
Amortization                             (7,810,000)          
Balance at December 31, 2021     1,881,528,000       1,853,630,000               1,881,528,000 1,853,630,000        
Finite-Lived Intangible Assets, Net [Abstract]                                        
Finite-Lived Intangible Assets, Gross     117,211,000       108,665,000               117,211,000 108,665,000        
Accumulated amortization     (82,656,000)       (74,846,000)               (82,656,000) (74,846,000)        
Net book value     34,555,000       33,819,000               $ 34,555,000 33,819,000        
Cash Equivalents and Cash Flows [Abstract]                                        
Cash equivalents maturity period                             90 days          
Cash Payments [Abstract]                                        
Interest                             $ 236,463,000 110,119,000 215,888,000      
Income taxes paid                             128,850,000 108,304,000 110,798,000      
Noncash Transactions [Abstract]                                        
Loans charged-off to the allowance for credit losses                             (54,176,000) (54,996,000) (49,333,000)      
Real Estate Owned, Transfer to Real Estate Owned                             230,000 1,098,000 3,436,000      
Loans foreclosed upon with repossessions transferred to other repossessed assets                             0 0 25,000      
Available-for-sale securities transferred to Held-to-Maturity                             1,059,737,000 0 873,613,000 $ 179,800,000    
Right of Use Assets Recognized                             42,413,000 17,642,000 15,820,000      
Loans [Abstract]                                        
Loans and Leases Receivable, Deferred Income     $ 26,100,000       34,300,000               $ 26,100,000 34,300,000        
Percentage of loan portfolio assigned specific risk rating     78.40%                       78.40%          
Risk rated loans     $ 1,000,000                       $ 1,000,000          
Other Assets [Abstract]                                        
Premises and equipment, net     $ 327,885,000       288,182,000               327,885,000 288,182,000        
Amortization                             $ 2,800,000 1,600,000 2,300,000      
Number of trusts investment     12                       12          
Value of investments with trust companies     $ 4,000,000.0                       $ 4,000,000.0          
Cash surrender value of life insurance     881,900,000       761,900,000               881,900,000 761,900,000        
Bank-owned life insurance                             21,033,000 18,942,000 18,784,000      
investments are included in CRA investments     228,400,000       188,900,000               228,400,000 188,900,000        
Amortization Method Qualified Affordable Housing Project Investments     138,000,000       115,400,000               138,000,000 115,400,000        
Other Investments [Abstract]                                        
Federal Reserve Bank and Federal Home Loan Bank (FHLB) stock     80,200,000       67,800,000               80,200,000 67,800,000        
Other Investments     131,000,000       101,000,000               131,000,000 101,000,000        
Gain (loss) due to change in fair value of investments                             10,605,000 23,109,000 1,071,000      
Other Real Estate Owned [Abstract]                                        
Other real estate owned     8,000,000       8,500,000               8,000,000 8,500,000        
Valuation allowance related to other real estate owned     $ 0       $ 0               0 0        
Foreclosed real estate expense                             280,000   8,600,000      
Foreclosed Real Estate Benefit                               (712,000)        
Income Tax Contingency [Line Items]                                        
Income Tax Examination, Penalties and Interest Expense                             $ 264,000 $ 0 $ 571,000      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]                                        
Stock options outstanding (in shares) | shares     40,188       56,147       101,769       40,188 56,147 101,769   119,274  
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements | shares                             398,461 458,808 277,896      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares                             263,573 32,684 394,593      
Basic earnings per share calculation [Abstract]                                        
Numerator - Net income (loss) available to common stockholders     $ 134,049,000 $ 144,860,000 $ 141,329,000 $ 125,312,000 $ 129,730,000 $ 132,779,000 $ 127,992,000 $ 121,630,000 $ 107,078,000 $ 106,847,000 $ 62,444,000 $ 28,356,000 $ 545,550,000 $ 512,131,000 $ 304,725,000      
Denominator - Weighted average common shares outstanding (in shares) | shares                             75,735,404 75,468,339 75,376,489      
Basic net income per common share (in dollars per share) | $ / shares     $ 1.77 $ 1.91 $ 1.87 $ 1.66 $ 1.72 $ 1.76 $ 1.70 $ 1.61 $ 1.42 $ 1.42 $ 0.83 $ 0.37 $ 7.20 $ 6.79 $ 4.04      
Diluted net income per share calculation [Abstract]                                        
Numerator - Net income (loss) available to common stockholders     $ 134,049,000 $ 144,860,000 $ 141,329,000 $ 125,312,000 $ 129,730,000 $ 132,779,000 $ 127,992,000 $ 121,630,000 $ 107,078,000 $ 106,847,000 $ 62,444,000 $ 28,356,000 $ 545,550,000 $ 512,131,000 $ 304,725,000      
Denominator - Weighted average common shares outstanding (in shares) | shares                             75,735,404 75,468,339 75,376,489      
Dilutive shares (in shares) | shares                             398,461 458,808 277,896      
Weighted average diluted common shares outstanding (in shares) | shares                             76,133,865 75,927,147 75,654,385      
Diluted net income per common share (in dollars per share) | $ / shares     $ 1.76 $ 1.91 $ 1.86 $ 1.65 $ 1.71 $ 1.75 $ 1.69 $ 1.61 $ 1.42 $ 1.42 $ 0.83 $ 0.37 $ 7.17 $ 6.75 $ 4.03      
New Accounting Pronouncements or Change in Accounting Principle                                        
Right of Use Assets Recognized                             $ 42,413,000 $ 17,642,000 $ 15,820,000      
Premises and Equipment | Minimum                                        
Premises and Equipment and Leaseholds [Abstract]                                        
Premises and equipment, useful life                             3 years          
Premises and Equipment | Maximum                                        
Premises and Equipment and Leaseholds [Abstract]                                        
Premises and equipment, useful life                             30 years          
Computer Software, Intangible Asset                                        
Other Assets [Abstract]                                        
Premises and equipment, net     $ 6,600,000       $ 5,100,000               $ 6,600,000 5,100,000        
Computer Software, Intangible Asset | Minimum                                        
Premises and Equipment and Leaseholds [Abstract]                                        
Premises and equipment, useful life                             3 years          
Computer Software, Intangible Asset | Maximum                                        
Premises and Equipment and Leaseholds [Abstract]                                        
Premises and equipment, useful life                             7 years          
Bankers Healthcare Group, LLC                                        
Schedule of Equity Method Investments [Line Items]                                        
Equity Method Investment, Ownership Percentage     49.00%                       49.00%          
Cash paid to redeem common stock   $ 74,100,000                                    
Finite-lived Intangible Assets [Roll Forward]                                        
Amortization                             $ (512,000) $ (752,000) $ (1,200,000)      
JB&B Capital | JB&B Capital                                        
Schedule of Equity Method Investments [Line Items]                                        
Equity Method Investment, Ownership Percentage 80.00%                                     20.00%
Cash paid to redeem common stock $ 32,000,000                                      
Loans, net of allowance for loan losses 12,900,000                                      
Borrowings 29,500,000                                      
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value $ 8,000,000                                      
Gain on remeasurement of previously held noncontrolling interest                             $ 5,500,000          
Internal Revenue Service (IRS) | Minimum                                        
Income Tax Contingency [Line Items]                                        
Tax year open to audit under the statute of limitation                             2019          
Internal Revenue Service (IRS) | Maximum                                        
Income Tax Contingency [Line Items]                                        
Tax year open to audit under the statute of limitation                             2022          
Employee Stock Option                                        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]                                        
Stock options outstanding (in shares) | shares     40,188                       40,188