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Allowance for Credit Losses - Narrative (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2023
USD ($)
lendingRelationship
Dec. 31, 2022
USD ($)
lendingRelationship
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Allowance for Loan Losses        
Economic forecast period 2 years      
Economic forecast revision period 3 years      
Increase (decrease) in allowance for credit losses for loans held-for-investment $ (3,200) $ (2,100)    
Net charge-offs (17,600) 10,600    
Provision for credit losses 14,423 8,459 $ (67,069)  
Off-balance sheet, credit loss, liability 19,264 23,641 27,290 $ 31,118
Provision for credit losses on off-balance sheet commitments (4,377) (3,649) (3,828)  
Commercial loans | Commercial and industrial        
Allowance for Loan Losses        
Provision for credit losses $ 10,956 $ 2,516 (8,164)  
Number of loans with charge-offs | lendingRelationship 2 1    
Business loans secured by real estate | CRE non-owner-occupied        
Allowance for Loan Losses        
Number of loans with charge-offs | lendingRelationship 2 2    
Business loans secured by real estate | CRE owner-occupied        
Allowance for Loan Losses        
Provision for credit losses $ (1,223) $ 2,709 $ (20,998)  
Number of loans with charge-offs | lendingRelationship 1      
Business loans secured by real estate | Multifamily Properties        
Allowance for Loan Losses        
Number of loans with charge-offs | lendingRelationship 1