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Nature of Operations and Summary of Significant Accounting Policies - Additional Information (Details)
$ / shares in Units, $ in Thousands
 12 Months Ended
Mar. 06, 2020
$ / shares
shares
Jan. 01, 2020
USD ($)
Dec. 31, 2022
USD ($)
office
segment
$ / shares
shares
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
Jul. 16, 2019
shares
Schedule Of Accounting Policies [Line Items]              
Full service facilities maintained by bank | office     71        
Accrued interest receivable     $ 17,500 $ 11,500      
Minimum period required for satisfactory performance to return loan from non-accrual to accrual status     6 months        
Commercial loans as a percentage of total loan     59.00%        
Residential real estate loans as a percentage of total loan     16.00%        
Installment loans as a percentage of total loan     23.00%        
Mortgage warehouse loans as a percentage of total loan     2.00%        
Allowance for credit loss   $ 22,577 $ 50,464 54,286 $ 57,027    
Investment in limited partnerships     4,500 2,300      
Core deposit intangibles     17,200        
Goodwill     $ 155,211 $ 154,572 $ 151,238    
Uncertain tax positions recognized     50.00%        
Shares, non-dilutive (in shares) | shares     319,760 140,955 278,776    
Number of shares authorized to be repurchased | shares             2,250,000
Number of shares repurchased | shares 1,000,000   803,349        
Average price per share repurchased | $ / shares $ 15.19   $ 16.89        
Amount available for payment of dividend     $ 149,900        
Compensation expense     $ 2,500 $ 1,800 $ 1,300    
Number of business segment | segment     1        
Net income     $ 93,408 87,091 68,499    
Stockholders’ Equity     $ 677,375 $ 723,209 $ 692,216 $ 656,023  
Revision of Prior Period, Accounting Standards Update, Adjustment              
Schedule Of Accounting Policies [Line Items]              
Stockholders’ Equity   15,600          
Measurement Input, Discount Rate              
Schedule Of Accounting Policies [Line Items]              
Factor considered to be significant for fair value measurement     0.10        
Minimum              
Schedule Of Accounting Policies [Line Items]              
Loan delinquency period     90 days        
Maximum              
Schedule Of Accounting Policies [Line Items]              
Allowance for loan losses charge down family first and junior lien mortgages past due period     180 days        
Allowance for loan losses charge down unsecured open end loans past due period     90 days        
Buildings and improvements | Minimum              
Schedule Of Accounting Policies [Line Items]              
Useful Life for depreciation     3 years        
Buildings and improvements | Maximum              
Schedule Of Accounting Policies [Line Items]              
Useful Life for depreciation     40 years        
Furniture and equipment | Minimum              
Schedule Of Accounting Policies [Line Items]              
Useful Life for depreciation     2 years        
Furniture and equipment | Maximum              
Schedule Of Accounting Policies [Line Items]              
Useful Life for depreciation     20 years        
Accounting Standards Update 2016-13              
Schedule Of Accounting Policies [Line Items]              
PCD loans charge–offs   $ 2,800