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Business Combinations - Additional Information (Details)
$ in Thousands
 6 Months Ended
Jul. 01, 2020
USD ($)
loan
lease_obligation
shares
Jun. 30, 2021
USD ($)
Dec. 31, 2020
USD ($)
Business Acquisition [Line Items]      
Total assets   $ 5,426,910 $ 5,514,544
Net loans held-for-investment   3,777,780 3,785,631
Deposits   4,108,269 4,076,551
Operating lease liabilities   40,721 42,734
Operating lease right-of-use assets   34,574 $ 36,741
Victory      
Business Acquisition [Line Items]      
Total assets $ 402,800    
Net loans held-for-investment 180,400    
Deposits $ 354,600    
Number of branches | loan 6    
Victory      
Business Acquisition [Line Items]      
Common stock exchange rate (shares) | shares 2.0463    
Adjustment to the carrying value of goodwill   304  
Adjustment to deferred tax assets   $ 304  
Number of lease obligations | lease_obligation 5    
Operating lease liabilities $ 2,500    
Operating lease right-of-use assets $ 2,500