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Loans and Leases (Recorded Fair Values of Purchased Non-Impaired Loans and Leases) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
May 01, 2019
Apr. 02, 2019
Dec. 31, 2018
Nov. 01, 2018
Oct. 02, 2018
May 01, 2018
Dec. 31, 2017
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans $ 106,937     $ 30,190       $ 199,682
First South Bancorp | Commercial | Other commercial real estate                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans   $ 0            
First South Bancorp | Commercial | Other                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans   0            
Total non-PCI loans and leases 0              
First South Bancorp | Noncommercial | Revolving mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans   0            
First South Bancorp | Noncommercial | Consumer                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans   0            
First South Bancorp | PCI Loans                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Contractual Cash Flows Expected To Be Collected   21,392            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Contractually Required Payments   23,389            
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   16,398            
First South Bancorp | PCI Loans | Commercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   11,790            
First South Bancorp | PCI Loans | Commercial | Construction and land development                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   1,233            
First South Bancorp | PCI Loans | Commercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   9,355            
First South Bancorp | PCI Loans | Commercial | Commercial and industrial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   1,202            
First South Bancorp | PCI Loans | Noncommercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   4,608            
First South Bancorp | PCI Loans | Noncommercial | Construction and land development                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   17            
First South Bancorp | PCI Loans | Noncommercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   4,591            
First South Bancorp | Non-PCI Loans                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   162,845            
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition   175,465            
Total non-PCI loans and leases   162,845            
First South Bancorp | Non-PCI Loans | Commercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   131,093            
First South Bancorp | Non-PCI Loans | Commercial | Construction and land development                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   8,663            
First South Bancorp | Non-PCI Loans | Commercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   74,713            
First South Bancorp | Non-PCI Loans | Commercial | Other commercial real estate                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   7,509            
First South Bancorp | Non-PCI Loans | Commercial | Commercial and industrial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   40,208            
First South Bancorp | Non-PCI Loans | Noncommercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   31,752            
First South Bancorp | Non-PCI Loans | Noncommercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   24,641            
First South Bancorp | Non-PCI Loans | Noncommercial | Commercial and industrial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   3,552            
First South Bancorp | Non-PCI Loans | Noncommercial | Revolving mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   2,162            
First South Bancorp | Non-PCI Loans | Noncommercial | Consumer                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets   $ 1,397            
Entegra Financial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition 1,135,451              
Total non-PCI loans and leases 953,679              
Entegra Financial | Commercial | Other commercial real estate                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans 1,734              
Entegra Financial | Commercial | Other                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans 1,731              
Total non-PCI loans and leases 4,741              
Entegra Financial | Noncommercial | Revolving mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans 5,582              
Entegra Financial | Noncommercial | Consumer                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans 352              
Entegra Financial | PCI Loans                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Contractual Cash Flows Expected To Be Collected 82,503              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Contractually Required Payments 103,441              
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 77,507              
Entegra Financial | PCI Loans | Commercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 45,470              
Entegra Financial | PCI Loans | Commercial | Construction and land development                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 10,326              
Entegra Financial | PCI Loans | Commercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 30,316              
Entegra Financial | PCI Loans | Commercial | Commercial and industrial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 1,363              
Entegra Financial | PCI Loans | Noncommercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 32,037              
Entegra Financial | PCI Loans | Noncommercial | Construction and land development                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 1,114              
Entegra Financial | PCI Loans | Noncommercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 24,989              
Entegra Financial | Non-PCI Loans                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 953,679              
Entegra Financial | Non-PCI Loans | Commercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 534,705              
Entegra Financial | Non-PCI Loans | Commercial | Construction and land development                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 92,495              
Entegra Financial | Non-PCI Loans | Commercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 381,729              
Entegra Financial | Non-PCI Loans | Commercial | Other commercial real estate                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 28,678              
Entegra Financial | Non-PCI Loans | Commercial | Commercial and industrial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 27,062              
Entegra Financial | Non-PCI Loans | Noncommercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 418,974              
Entegra Financial | Non-PCI Loans | Noncommercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 310,039              
Entegra Financial | Non-PCI Loans | Noncommercial | Commercial and industrial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 51,786              
Entegra Financial | Non-PCI Loans | Noncommercial | Revolving mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets 36,701              
Entegra Financial | Non-PCI Loans | Noncommercial | Consumer                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets $ 20,448              
Palmetto Heritage Bancshares                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans         $ 3,863      
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition         142,413      
Total non-PCI loans and leases         131,283      
Palmetto Heritage Bancshares | Commercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans         1,637      
Total non-PCI loans and leases         52,356      
Palmetto Heritage Bancshares | Commercial | Construction and land development                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans         212      
Total non-PCI loans and leases         13,186      
Palmetto Heritage Bancshares | Commercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans         1,053      
Total non-PCI loans and leases         29,225      
Palmetto Heritage Bancshares | Commercial | Other commercial real estate                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans         0      
Total non-PCI loans and leases         753      
Palmetto Heritage Bancshares | Commercial | Commercial and industrial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans         372      
Total non-PCI loans and leases         8,153      
Palmetto Heritage Bancshares | Commercial | Other                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Total non-PCI loans and leases         1,039      
Palmetto Heritage Bancshares | Noncommercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans         2,226      
Total non-PCI loans and leases         78,927      
Palmetto Heritage Bancshares | Noncommercial | Construction and land development                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans         0      
Palmetto Heritage Bancshares | Noncommercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans         2,226      
Total non-PCI loans and leases         59,076      
Palmetto Heritage Bancshares | Noncommercial | Commercial and industrial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Total non-PCI loans and leases         11,103      
Palmetto Heritage Bancshares | Noncommercial | Revolving mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans         0      
Total non-PCI loans and leases         6,175      
Palmetto Heritage Bancshares | Noncommercial | Consumer                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans         0      
Total non-PCI loans and leases         2,573      
Capital Commerce Bancorp                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans           $ 10,772    
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition           198,568    
Total non-PCI loans and leases           173,354    
Capital Commerce Bancorp | Commercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans           4,250    
Total non-PCI loans and leases           108,019    
Capital Commerce Bancorp | Commercial | Construction and land development                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans           1,482    
Total non-PCI loans and leases           10,299    
Capital Commerce Bancorp | Commercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans           1,846    
Total non-PCI loans and leases           57,049    
Capital Commerce Bancorp | Commercial | Other commercial real estate                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans           0    
Total non-PCI loans and leases           6,370    
Capital Commerce Bancorp | Commercial | Commercial and industrial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans           922    
Total non-PCI loans and leases           34,301    
Capital Commerce Bancorp | Commercial | Other                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans           0    
Total non-PCI loans and leases           0    
Capital Commerce Bancorp | Noncommercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans           6,522    
Total non-PCI loans and leases           65,335    
Capital Commerce Bancorp | Noncommercial | Construction and land development                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans           0    
Capital Commerce Bancorp | Noncommercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans           6,503    
Total non-PCI loans and leases           50,630    
Capital Commerce Bancorp | Noncommercial | Commercial and industrial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Total non-PCI loans and leases           11,173    
Capital Commerce Bancorp | Noncommercial | Revolving mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans           0    
Total non-PCI loans and leases           2,552    
Capital Commerce Bancorp | Noncommercial | Consumer                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans           19    
Total non-PCI loans and leases           $ 980    
Capital Commerce Bancorp | PCI Loans                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Contractual Cash Flows Expected To Be Collected     $ 16,815          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Contractually Required Payments     19,720          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     13,032          
HomeBancorp Inc.                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans             $ 15,555  
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition             710,876  
Total non-PCI loans and leases             550,618  
HomeBancorp Inc. | Commercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans             8,238  
Total non-PCI loans and leases             252,327  
HomeBancorp Inc. | Commercial | Construction and land development                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans             0  
Total non-PCI loans and leases             525  
HomeBancorp Inc. | Commercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans             7,815  
Total non-PCI loans and leases             188,688  
HomeBancorp Inc. | Commercial | Other commercial real estate                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans             0  
Total non-PCI loans and leases             55,183  
HomeBancorp Inc. | Commercial | Commercial and industrial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans             423  
Total non-PCI loans and leases             7,931  
HomeBancorp Inc. | Commercial | Other                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans         $ 0      
Total non-PCI loans and leases             0  
HomeBancorp Inc. | Noncommercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans             7,317  
Total non-PCI loans and leases             298,291  
HomeBancorp Inc. | Noncommercial | Construction and land development                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans             0  
HomeBancorp Inc. | Noncommercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans             7,317  
Total non-PCI loans and leases             296,273  
HomeBancorp Inc. | Noncommercial | Commercial and industrial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Total non-PCI loans and leases             0  
HomeBancorp Inc. | Noncommercial | Revolving mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans             0  
Total non-PCI loans and leases             51  
HomeBancorp Inc. | Noncommercial | Consumer                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans             0  
Total non-PCI loans and leases             $ 1,967  
Biscayne Bancshares | Commercial | Other commercial real estate                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans     0          
Biscayne Bancshares | Commercial | Other                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans     0          
Total non-PCI loans and leases     0          
Biscayne Bancshares | Noncommercial | Revolving mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans     0          
Biscayne Bancshares | Noncommercial | Consumer                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
PCI loans     0          
Biscayne Bancshares | PCI Loans                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     13,032          
Biscayne Bancshares | PCI Loans | Commercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     9,249          
Biscayne Bancshares | PCI Loans | Commercial | Construction and land development                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     0          
Biscayne Bancshares | PCI Loans | Commercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     7,589          
Biscayne Bancshares | PCI Loans | Commercial | Commercial and industrial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     1,660          
Biscayne Bancshares | PCI Loans | Noncommercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     3,783          
Biscayne Bancshares | PCI Loans | Noncommercial | Construction and land development                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     0          
Biscayne Bancshares | PCI Loans | Noncommercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     3,783          
Biscayne Bancshares | Non-PCI Loans                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     850,352          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition     1,078,854          
Total non-PCI loans and leases     850,352          
Biscayne Bancshares | Non-PCI Loans | Commercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     345,494          
Biscayne Bancshares | Non-PCI Loans | Commercial | Construction and land development                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     15,647          
Biscayne Bancshares | Non-PCI Loans | Commercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     203,605          
Biscayne Bancshares | Non-PCI Loans | Commercial | Other commercial real estate                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     98,107          
Biscayne Bancshares | Non-PCI Loans | Commercial | Commercial and industrial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     28,135          
Biscayne Bancshares | Non-PCI Loans | Noncommercial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     504,858          
Biscayne Bancshares | Non-PCI Loans | Noncommercial | Mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     405,419          
Biscayne Bancshares | Non-PCI Loans | Noncommercial | Commercial and industrial                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     31,668          
Biscayne Bancshares | Non-PCI Loans | Noncommercial | Revolving mortgage                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     54,081          
Biscayne Bancshares | Non-PCI Loans | Noncommercial | Consumer                
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]                
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets     $ 13,690