v3.26.1
Loans and Allowance for Credit Losses - Loans Experiencing Financial Difficulty and Modified (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2026
Jun. 30, 2026
Dec. 31, 2025
Financing Receivable, Modified [Line Items]      
Additional amount committed to lend   $ 41  
CCBX      
Financing Receivable, Modified [Line Items]      
Total $ 52,732 $ 54,132  
Total Class of Financing Receivable 1.41% 1.29%  
Weighted Average Interest Rate Reduction 14.40% 15.10%  
Weighted Average Term Extension (years) 2 years 2 years 1 month 6 days  
Total $ 38,895 $ 33,280  
CCBX | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans      
Financing Receivable, Modified [Line Items]      
Total $ 767 $ 555  
Total Class of Financing Receivable 4.00% 2.25%  
Weighted Average Interest Rate Reduction 0.00% 0.00%  
Weighted Average Term Extension (years) 2 years 2 years 4 months 24 days  
Total $ 632 $ 64  
CCBX | Consumer and other loans: | Credit cards      
Financing Receivable, Modified [Line Items]      
Total $ 47,031 $ 46,827  
Total Class of Financing Receivable 7.55% 6.22%  
Weighted Average Interest Rate Reduction 14.40% 15.10%  
Total $ 34,341 $ 32,247  
CCBX | Consumer and other loans: | Other Consumer and Other Loans      
Financing Receivable, Modified [Line Items]      
Total $ 4,934 $ 6,750  
Total Class of Financing Receivable 0.71% 0.73%  
Weighted Average Interest Rate Reduction 0.00% 0.00%  
Weighted Average Term Extension (years) 2 years 2 years 1 month 6 days  
Total $ 3,922 $ 969  
CCBX | Principal Forgiveness      
Financing Receivable, Modified [Line Items]      
Total 13,780 12,324  
Total   20,218 $ 15,190
Total 12,339 10,707  
CCBX | Principal Forgiveness | 30-89 Days Past Due      
Financing Receivable, Modified [Line Items]      
Total 9,347 8,119  
CCBX | Principal Forgiveness | 90 Days or More Past Due      
Financing Receivable, Modified [Line Items]      
Total 7,463 8,210  
CCBX | Principal Forgiveness | Total Past Due      
Financing Receivable, Modified [Line Items]      
Total 16,810 16,329  
CCBX | Principal Forgiveness | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans      
Financing Receivable, Modified [Line Items]      
Total 0 0  
Total   378 224
Total 0 0  
CCBX | Principal Forgiveness | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans | 30-89 Days Past Due      
Financing Receivable, Modified [Line Items]      
Total 199 64  
CCBX | Principal Forgiveness | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans | 90 Days or More Past Due      
Financing Receivable, Modified [Line Items]      
Total 28 0  
CCBX | Principal Forgiveness | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans | Total Past Due      
Financing Receivable, Modified [Line Items]      
Total 227 64  
CCBX | Principal Forgiveness | Consumer and other loans: | Credit cards      
Financing Receivable, Modified [Line Items]      
Total 13,780 12,324  
Total   9,163 9,062
Total 12,339 10,707  
CCBX | Principal Forgiveness | Consumer and other loans: | Credit cards | 30-89 Days Past Due      
Financing Receivable, Modified [Line Items]      
Total 8,403 7,466  
CCBX | Principal Forgiveness | Consumer and other loans: | Credit cards | 90 Days or More Past Due      
Financing Receivable, Modified [Line Items]      
Total 7,114 7,935  
CCBX | Principal Forgiveness | Consumer and other loans: | Credit cards | Total Past Due      
Financing Receivable, Modified [Line Items]      
Total 15,517 15,401  
CCBX | Principal Forgiveness | Consumer and other loans: | Other Consumer and Other Loans      
Financing Receivable, Modified [Line Items]      
Total 0 0  
Total   10,677 $ 5,904
Total 0 0  
CCBX | Principal Forgiveness | Consumer and other loans: | Other Consumer and Other Loans | 30-89 Days Past Due      
Financing Receivable, Modified [Line Items]      
Total 745 589  
CCBX | Principal Forgiveness | Consumer and other loans: | Other Consumer and Other Loans | 90 Days or More Past Due      
Financing Receivable, Modified [Line Items]      
Total 321 275  
CCBX | Principal Forgiveness | Consumer and other loans: | Other Consumer and Other Loans | Total Past Due      
Financing Receivable, Modified [Line Items]      
Total 1,066 864  
CCBX | Term Extension      
Financing Receivable, Modified [Line Items]      
Total 4,850 3,573  
Total 3,895 746  
CCBX | Term Extension | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans      
Financing Receivable, Modified [Line Items]      
Total 763 487  
Total 628 64  
CCBX | Term Extension | Consumer and other loans: | Credit cards      
Financing Receivable, Modified [Line Items]      
Total 0 0  
Total 0 0  
CCBX | Term Extension | Consumer and other loans: | Other Consumer and Other Loans      
Financing Receivable, Modified [Line Items]      
Total 4,087 3,086  
Total 3,267 682  
CCBX | Interest Rate Reduction      
Financing Receivable, Modified [Line Items]      
Total 32,566 30,779  
Total 21,798 20,425  
CCBX | Interest Rate Reduction | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans      
Financing Receivable, Modified [Line Items]      
Total 0 0  
Total 0 0  
CCBX | Interest Rate Reduction | Consumer and other loans: | Credit cards      
Financing Receivable, Modified [Line Items]      
Total 32,566 30,779  
Total 21,798 20,425  
CCBX | Interest Rate Reduction | Consumer and other loans: | Other Consumer and Other Loans      
Financing Receivable, Modified [Line Items]      
Total 0 0  
Total 0 0  
CCBX | Principal Forgiveness & Payment Delay      
Financing Receivable, Modified [Line Items]      
Total 836 3,663  
Total 644 287  
CCBX | Principal Forgiveness & Payment Delay | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans      
Financing Receivable, Modified [Line Items]      
Total 4 60  
Total 4 0  
CCBX | Principal Forgiveness & Payment Delay | Consumer and other loans: | Credit cards      
Financing Receivable, Modified [Line Items]      
Total 0 0  
Total 0 0  
CCBX | Principal Forgiveness & Payment Delay | Consumer and other loans: | Other Consumer and Other Loans      
Financing Receivable, Modified [Line Items]      
Total 832 3,603  
Total 640 287  
CCBX | Interest Rate Reduction And Payment Delay      
Financing Receivable, Modified [Line Items]      
Total   3,724  
Total   1,115  
CCBX | Interest Rate Reduction And Payment Delay | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans      
Financing Receivable, Modified [Line Items]      
Total   0  
Total   0  
CCBX | Interest Rate Reduction And Payment Delay | Consumer and other loans: | Credit cards      
Financing Receivable, Modified [Line Items]      
Total   3,724  
Total   1,115  
CCBX | Interest Rate Reduction And Payment Delay | Consumer and other loans: | Other Consumer and Other Loans      
Financing Receivable, Modified [Line Items]      
Total   0  
Total   0  
CCBX | Principal Forgiveness, Payment Delay & Term Extension      
Financing Receivable, Modified [Line Items]      
Total 15 69  
Total 15    
CCBX | Principal Forgiveness, Payment Delay & Term Extension | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans      
Financing Receivable, Modified [Line Items]      
Total 0 8  
Total 0    
CCBX | Principal Forgiveness, Payment Delay & Term Extension | Consumer and other loans: | Credit cards      
Financing Receivable, Modified [Line Items]      
Total 0 0  
Total 0    
CCBX | Principal Forgiveness, Payment Delay & Term Extension | Consumer and other loans: | Other Consumer and Other Loans      
Financing Receivable, Modified [Line Items]      
Total 15 $ 61  
Total 15    
CCBX | Extended Maturity and Interest Rate Reduction      
Financing Receivable, Modified [Line Items]      
Total 685    
Total 204    
CCBX | Extended Maturity and Interest Rate Reduction | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans      
Financing Receivable, Modified [Line Items]      
Total 0    
Total 0    
CCBX | Extended Maturity and Interest Rate Reduction | Consumer and other loans: | Credit cards      
Financing Receivable, Modified [Line Items]      
Total 685    
Total 204    
CCBX | Extended Maturity and Interest Rate Reduction | Consumer and other loans: | Other Consumer and Other Loans      
Financing Receivable, Modified [Line Items]      
Total 0    
Total $ 0