v3.26.3
Loans and Allowance for Credit Losses - Loans Experiencing Financial Difficulty and Modified (Details) - USD ($)
$ in Thousands
 6 Months Ended 9 Months Ended
Jun. 30, 2026
Sep. 30, 2026
Dec. 31, 2025
Financing Receivable, Modified [Line Items]      
Additional amount committed to lend   $ 81  
CCBX      
Financing Receivable, Modified [Line Items]      
Total $ 52,732 $ 31,250  
Total Class of Financing Receivable 1.41% 0.75%  
Weighted Average Interest Rate Reduction 14.40% 18.70%  
Weighted Average Term Extension (years) 2 years 2 years  
Total $ 38,895 $ 17,134  
CCBX | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans      
Financing Receivable, Modified [Line Items]      
Total $ 767 $ 509  
Total Class of Financing Receivable 4.00% 2.14%  
Weighted Average Interest Rate Reduction 0.00% 0.00%  
Weighted Average Term Extension (years) 2 years 2 years 2 months 12 days  
Total $ 632 $ 169  
CCBX | Consumer and other loans: | Credit cards      
Financing Receivable, Modified [Line Items]      
Total $ 47,031 $ 22,123  
Total Class of Financing Receivable 7.55% 4.01%  
Weighted Average Interest Rate Reduction 14.40% 18.70%  
Total $ 34,341 $ 15,728  
CCBX | Consumer and other loans: | Other Consumer and Other Loans      
Financing Receivable, Modified [Line Items]      
Total $ 4,934 $ 8,618  
Total Class of Financing Receivable 0.71% 0.79%  
Weighted Average Interest Rate Reduction 0.00% 0.00%  
Weighted Average Term Extension (years) 2 years 1 year 10 months 24 days  
Total $ 3,922 $ 1,237  
CCBX | Principal Forgiveness      
Financing Receivable, Modified [Line Items]      
Total 13,780 5,071  
Total   13,262 $ 15,190
Total 12,339 4,301  
CCBX | Principal Forgiveness | 30-89 Days Past Due      
Financing Receivable, Modified [Line Items]      
Total 9,347 4,483  
CCBX | Principal Forgiveness | 90 Days or More Past Due      
Financing Receivable, Modified [Line Items]      
Total 7,463 5,007  
CCBX | Principal Forgiveness | Total Past Due      
Financing Receivable, Modified [Line Items]      
Total 16,810 9,490  
CCBX | Principal Forgiveness | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans      
Financing Receivable, Modified [Line Items]      
Total 0 0  
Total   247 224
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 199 105  
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 64  
CCBX | Principal Forgiveness | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans | Total Past Due      
Financing Receivable, Modified [Line Items]      
Total 227 169  
CCBX | Principal Forgiveness | Consumer and other loans: | Credit cards      
Financing Receivable, Modified [Line Items]      
Total 13,780 5,071  
Total   4,684 9,062
Total 12,339 4,301  
CCBX | Principal Forgiveness | Consumer and other loans: | Credit cards | 30-89 Days Past Due      
Financing Receivable, Modified [Line Items]      
Total 8,403 3,669  
CCBX | Principal Forgiveness | Consumer and other loans: | Credit cards | 90 Days or More Past Due      
Financing Receivable, Modified [Line Items]      
Total 7,114 4,638  
CCBX | Principal Forgiveness | Consumer and other loans: | Credit cards | Total Past Due      
Financing Receivable, Modified [Line Items]      
Total 15,517 8,307  
CCBX | Principal Forgiveness | Consumer and other loans: | Other Consumer and Other Loans      
Financing Receivable, Modified [Line Items]      
Total 0 0  
Total   8,331 $ 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 745 709  
CCBX | Principal Forgiveness | Consumer and other loans: | Other Consumer and Other Loans | 90 Days or More Past Due      
Financing Receivable, Modified [Line Items]      
Total 321 305  
CCBX | Principal Forgiveness | Consumer and other loans: | Other Consumer and Other Loans | Total Past Due      
Financing Receivable, Modified [Line Items]      
Total 1,066 1,014  
CCBX | Term Extension      
Financing Receivable, Modified [Line Items]      
Total 4,850 4,029  
Total 3,895 961  
CCBX | Term Extension | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans      
Financing Receivable, Modified [Line Items]      
Total 763 460  
Total 628 169  
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 3,569  
Total 3,267 792  
CCBX | Interest Rate Reduction      
Financing Receivable, Modified [Line Items]      
Total 32,566 15,019  
Total 21,798 10,670  
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 15,019  
Total 21,798 10,670  
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 5,039  
Total 644 428  
CCBX | Principal Forgiveness & Payment Delay | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans      
Financing Receivable, Modified [Line Items]      
Total 4 49  
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 4,990  
Total 640 428  
CCBX | Interest Rate Reduction And Payment Delay      
Financing Receivable, Modified [Line Items]      
Total   2,033  
Total   757  
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   2,033  
Total   757  
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 59  
Total 15 17  
CCBX | Principal Forgiveness, Payment Delay & Term Extension | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans      
Financing Receivable, Modified [Line Items]      
Total 0 0  
Total 0 0  
CCBX | Principal Forgiveness, Payment Delay & Term Extension | Consumer and other loans: | Credit cards      
Financing Receivable, Modified [Line Items]      
Total 0 0  
Total 0 0  
CCBX | Principal Forgiveness, Payment Delay & Term Extension | Consumer and other loans: | Other Consumer and Other Loans      
Financing Receivable, Modified [Line Items]      
Total 15 59  
Total 15 $ 17  
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