v3.25.2
Loans and Allowance for Credit Losses - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]                
Transfer from loans to loans held for sale     $ 2,084,172 $ 255,672        
Loans held for sale $ 60,474   60,474     $ 20,600    
Accrued interest on loans 20,200   20,200     20,500    
Accrued interest on loans, allowance (602)   (602)     0    
Pledged loans 3,375,536   3,375,536     3,309,571    
Balance of SBA and USDA loans and participations sold and serviced 2,600   2,600     4,100    
Balance of main street lending program loans and participations serviced 46,300   46,300     50,300    
Purchased loans 4,500   4,500     6,100    
Unamortized premium 87   87     117    
Purchased participation loans 27,200   27,200     29,200    
90 Days or More Past Due and Still Accruing $ 32,634   $ 32,634     43,093    
Threshold period for past due loans (in days) 90 days   90 days          
Accounts receivable, noncurrent, 90 days or more past due, still accruing           43,100    
Allowance for credit losses $ 164,794 $ 148,878 $ 164,794 148,878 $ 183,178 176,994 $ 139,941 $ 117,381
Loans receivable 3,540,330   3,540,330     3,486,565    
CCBX                
Financing Receivable, Allowance for Credit Loss [Line Items]                
90 Days or More Past Due and Still Accruing 32,634   32,634     43,093    
Provision (Recapture) For Unfunded Commitments (182)   602          
Owner-Occupied Real Estate                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Commercial real estate loans 380,800   380,800          
Non-Owner-Occupied Real Estate                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Commercial real estate loans 553,900   553,900          
Multi-Family Residential Loans                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Commercial real estate loans 363,700   363,700          
Farmland Loans                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Commercial real estate loans 12,400   12,400          
CCBX                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Accounts receivable, noncurrent, 90 days or more past due, amount covered by credit enhancements $ 31,600   $ 31,600     41,800    
Company's responsibility for credit losses (in percent) 5.00%   5.00%          
Loans receivable $ 296,300   $ 296,300          
Amount of loans that company is responsible for credit loss 19,800   19,800          
CCBX | Less Than 90 Days Past Due                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Nonaccrual loans 20,100   $ 20,100     17,200    
Minimum                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Sustained repayment performance period of loan placed on nonaccrual     6 months          
Percentage of collateral coverage to loan balance     100.00%          
Loan repayment extended period of time     6 months          
Unfunded Loan Commitment                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Provision (Recapture) For Unfunded Commitments 1,500 435 $ 2,100 4,100        
Asset Pledged as Collateral                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Pledged loans 918,100   918,100     933,900    
Commercial and industrial loans                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Capital call lines, provided to venture capital firms 199,700   199,700     109,000    
Balance of main street lending program loans and participations serviced 2,400   2,400     2,600    
Allowance for credit losses 8,754 12,200 8,754 12,200 10,066 11,051 10,831 8,894
Loans receivable 149,926   149,926     150,395    
Consumer and other loans:                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Overdrafts included in loans 14,600   14,600     7,400    
Allowance for credit losses 131,251 $ 107,717 131,251 $ 107,717 $ 147,028 141,798 $ 100,406 $ 81,611
Loans receivable 12,230   12,230     13,542    
Community Bank                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Overdrafts included in loans 18   18     147    
CCBX                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Overdrafts included in loans $ 14,600   $ 14,600     7,300    
Threshold period for past due loans (in days) 180 days   180 days          
Consumer Portfolio Segment | Installment/Closed-End Consumer Loans                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Threshold period for past due loans (in days) 120 days   120 days          
Threshold period for past due loans, charge off (in days) 120 days   120 days          
Consumer Portfolio Segment | Revolving/Open-End Consumer Loans                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Threshold period for past due loans (in days) 180 days   180 days          
Threshold period for past due loans, charge off (in days) 180 days   180 days          
CCBX Loans                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Transfer from loans to loans held for sale     $ 2,080,000          
Proceeds from sales of loans held for sale     2,040,000          
Consumer and other loans $ 1,220,000   1,220,000     1,190,000    
Commercial and industrial loans 3,400   3,400     5,400    
Residential real estate loans 234,800   234,800     267,700    
CCBX Loans | Consumer Loan                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Purchased loans 157,000   157,000     208,000    
Consumer and other loans 153,600   153,600     202,700    
Unsecured CCBX Partner Loan                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Commercial and industrial loans 26,100   26,100          
Capital call lines                
Financing Receivable, Allowance for Credit Loss [Line Items]                
Commercial and industrial loans $ 199,700   $ 199,700     $ 109,000