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Benefit Plans - Narrative (Details) - USD ($)
1 Months Ended 12 Months Ended
May 23, 2022
May 31, 2012
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]          
Employer's match of employees' contributions of the first 3% of eligible compensation (as a percent)     100.00% 100.00% 100.00%
Percentage of eligible compensation, matched 100% by employer     3.00% 3.00% 3.00%
Employer's match of employees' contributions of the next 2% of eligible compensation (as a percent)     50.00% 50.00% 50.00%
Percentage of eligible compensation, matched 50% by employer     2.00% 2.00% 2.00%
Contributions made     $ 5,100,000 $ 4,900,000 $ 4,100,000
Intrinsic value     2,400,000 2,400,000 1,700,000
Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits | Supplemental Employee Retirement Plan          
Defined Benefit Plan Disclosure [Line Items]          
Amounts recorded as liability     10,900,000 11,700,000  
Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits | Supplemental Employee Retirement Plan | Plaza Bancorp          
Defined Benefit Plan Disclosure [Line Items]          
Deferred compensation liability     1,300,000 1,700,000  
Executive Officer | Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits | Supplemental Employee Retirement Plan          
Defined Benefit Plan Disclosure [Line Items]          
Amounts expensed     485,000 503,000 511,000
Amounts recorded as liability     $ 9,600,000 $ 10,000,000  
Stock option          
Defined Benefit Plan Disclosure [Line Items]          
Number of options outstanding (in shares)     159,751 213,077  
Compensation expense     $ 0 $ 0 8,000
Unrecognized compensation expense     0    
Restricted Stock          
Defined Benefit Plan Disclosure [Line Items]          
Compensation expense     18,900,000 $ 13,300,000 $ 10,800,000
Unrecognized compensation expense     38,600,000    
Grant date fair value     $ 31,000,000    
Weighted-average period of recognition     2 years 8 months 23 days    
2012 Plan          
Defined Benefit Plan Disclosure [Line Items]          
Number of shares authorized (in shares) 2,000,000        
Number of options outstanding (in shares)     149,818    
Shares reserved for future issuance (in shares)     2,864,547    
2015 Equity Based Compensation Plan          
Defined Benefit Plan Disclosure [Line Items]          
Number of options outstanding (in shares)     5,344    
Shares reserved for future issuance (in shares)     0    
2005 Long-Term Incentive Plan          
Defined Benefit Plan Disclosure [Line Items]          
Number of options outstanding (in shares)     4,589    
Shares reserved for future issuance (in shares)     0    
Long Term Incentive Plan 2022          
Defined Benefit Plan Disclosure [Line Items]          
Number of shares authorized (in shares) 7,000,000        
Maximum shares per person in a calendar year (in shares) 400,000        
Award vesting period (in years) 10 years        
Number of shares available for grant (in shares)     2,900,000    
Long Term Incentive Plan 2022 | Non-employee Directors          
Defined Benefit Plan Disclosure [Line Items]          
Maximum shares per person in a calendar year (in shares) 30,000        
Minimum          
Defined Benefit Plan Disclosure [Line Items]          
Employee contribution, as a percentage of compensation     1.00%    
Minimum | 2012 Plan          
Defined Benefit Plan Disclosure [Line Items]          
Award vesting period (in years)   1 year      
Maximum          
Defined Benefit Plan Disclosure [Line Items]          
Employee contribution, as a percentage of compensation     99.00%    
Maximum | 2012 Plan          
Defined Benefit Plan Disclosure [Line Items]          
Award vesting period (in years)   5 years