v3.26.1
Loans and Allowance for Credit Losses - Loans Experiencing Financial Difficulty and Modified (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Financing Receivable, Modified [Line Items]    
Additional amount committed to lend $ 23  
CCBX    
Financing Receivable, Modified [Line Items]    
Total $ 54,380 $ 52,732
Total Class of Financing Receivable 1.41% 1.41%
Weighted Average Interest Rate Reduction 14.10% 14.40%
Weighted Average Term Extension (years) 2 years 1 month 6 days 2 years
Total $ 35,049 $ 38,895
CCBX | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans    
Financing Receivable, Modified [Line Items]    
Total $ 627 $ 767
Total Class of Financing Receivable 2.88% 4.00%
Weighted Average Interest Rate Reduction 0.00% 0.00%
Weighted Average Term Extension (years) 2 years 4 months 24 days 2 years
Total $ 137 $ 632
CCBX | Consumer and other loans: | Credit cards    
Financing Receivable, Modified [Line Items]    
Total $ 48,317 $ 47,031
Total Class of Financing Receivable 6.97% 7.55%
Weighted Average Interest Rate Reduction 14.10% 14.40%
Total $ 33,965 $ 34,341
CCBX | Consumer and other loans: | Other Consumer and Other Loans    
Financing Receivable, Modified [Line Items]    
Total $ 5,436 $ 4,934
Total Class of Financing Receivable 0.75% 0.71%
Weighted Average Interest Rate Reduction 0.00% 0.00%
Weighted Average Term Extension (years) 2 years 2 years
Total $ 947 $ 3,922
CCBX | Principal Forgiveness    
Financing Receivable, Modified [Line Items]    
Total 13,526 13,780
Total 17,153 15,190
Total 11,987 12,339
CCBX | Principal Forgiveness | 30-89 Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 8,952 9,347
CCBX | Principal Forgiveness | 90 Days or More Past Due    
Financing Receivable, Modified [Line Items]    
Total 8,279 7,463
CCBX | Principal Forgiveness | Total Past Due    
Financing Receivable, Modified [Line Items]    
Total 17,231 16,810
CCBX | Principal Forgiveness | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans    
Financing Receivable, Modified [Line Items]    
Total 0 0
Total 218 224
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 103 199
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 26 28
CCBX | Principal Forgiveness | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans | Total Past Due    
Financing Receivable, Modified [Line Items]    
Total 129 227
CCBX | Principal Forgiveness | Consumer and other loans: | Credit cards    
Financing Receivable, Modified [Line Items]    
Total 13,526 13,780
Total 9,291 9,062
Total 11,987 12,339
CCBX | Principal Forgiveness | Consumer and other loans: | Credit cards | 30-89 Days Past Due    
Financing Receivable, Modified [Line Items]    
Total 8,280 8,403
CCBX | Principal Forgiveness | Consumer and other loans: | Credit cards | 90 Days or More Past Due    
Financing Receivable, Modified [Line Items]    
Total 8,153 7,114
CCBX | Principal Forgiveness | Consumer and other loans: | Credit cards | Total Past Due    
Financing Receivable, Modified [Line Items]    
Total 16,433 15,517
CCBX | Principal Forgiveness | Consumer and other loans: | Other Consumer and Other Loans    
Financing Receivable, Modified [Line Items]    
Total 0 0
Total 7,644 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 569 745
CCBX | Principal Forgiveness | Consumer and other loans: | Other Consumer and Other Loans | 90 Days or More Past Due    
Financing Receivable, Modified [Line Items]    
Total 100 321
CCBX | Principal Forgiveness | Consumer and other loans: | Other Consumer and Other Loans | Total Past Due    
Financing Receivable, Modified [Line Items]    
Total 669 1,066
CCBX | Term Extension    
Financing Receivable, Modified [Line Items]    
Total 3,603 4,850
Total 806 3,895
CCBX | Term Extension | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans    
Financing Receivable, Modified [Line Items]    
Total 609 763
Total 137 628
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 2,994 4,087
Total 669 3,267
CCBX | Interest Rate Reduction    
Financing Receivable, Modified [Line Items]    
Total 32,489 32,566
Total 21,457 21,798
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 32,489 32,566
Total 21,457 21,798
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 2,428 836
Total 263 644
CCBX | Principal Forgiveness & Payment Delay | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans    
Financing Receivable, Modified [Line Items]    
Total 18 4
Total 0 4
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 2,410 832
Total 263 640
CCBX | Interest Rate Reduction And Payment Delay    
Financing Receivable, Modified [Line Items]    
Total 2,302  
Total 521  
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 2,302  
Total 521  
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 32 15
Total 15 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 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 32 15
Total $ 15 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