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Loans and Allowance for Credit Losses - Summary of Amortized Cost of CCBX Loans (Details) - USD ($) $ in Thousands | 6 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2026 | Sep. 30, 2025 | Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Loans receivable | $ 4,208,270 |  | $ 3,749,531
Total CCBX Loans | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 378,007 |  | 395,346
2023, current period gross write-offs | 1,061 | $ 9,522 |
2025 | 230,659 |  | 172,613
2022, current period gross write-offs | 16,735 | 36,958 |
2024 | 113,712 |  | 90,378
2021, current period gross write-offs | 14,318 | 28,824 |
2023 | 59,985 |  | 24,910
2020, current period gross write-offs | 8,296 | 8,657 |
2022 | 16,392 |  | 1,000
2019, current period gross write-offs | 1,579 | 738 |
Prior | 625 |  | 101
Prior, current period gross write-offs | 149 | 6 |
Revolving Loans Amortized Cost Basis | 1,425,373 |  | 1,121,766
Revolving Loans Amortized Cost Basis, current period gross write-offs | 70,545 | 132,427 |
Revolving Loans Converted To Term | 1,543 |  | 1,980
Revolving Loans Converted To Term, current period gross write-offs | 0 |  | 0
Loans receivable | 2,226,296 |  | 1,808,094
Total, current period gross write-offs | 112,683 |  | 217,132
Commercial and industrial loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 28,039 |  | 131,644
2023, current period gross write-offs | 0 | 0 |
2025 | 112,319 |  | 8,913
2022, current period gross write-offs | 0 | 0 |
2024 | 5,980 |  | 33,940
2021, current period gross write-offs | 28 | 0 |
2023 | 7,719 |  | 12,240
2020, current period gross write-offs | 23 | 0 |
2022 | 32,240 |  | 3,605
2019, current period gross write-offs | 0 | 0 |
Prior | 17,296 |  | 5,363
Prior, current period gross write-offs | 0 | 0 |
Revolving Loans Amortized Cost Basis | 31,872 |  | 26,478
Revolving Loans Amortized Cost Basis, current period gross write-offs | 0 | 0 |
Revolving Loans Converted To Term | 1,711 |  | 2,256
Revolving Loans Converted To Term, current period gross write-offs | 0 |  | 0
Loans receivable | 237,176 |  | 224,439
Total, current period gross write-offs | 51 |  | 0
Commercial and industrial loans | Capital call lines | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 0 |  | 0
2023, current period gross write-offs | 0 | 0 |
2025 | 0 |  | 0
2022, current period gross write-offs | 0 | 0 |
2024 | 0 |  | 0
2021, current period gross write-offs | 0 | 0 |
2023 | 0 |  | 0
2020, current period gross write-offs | 0 | 0 |
2022 | 0 |  | 0
2019, current period gross write-offs | 0 | 0 |
Prior | 0 |  | 0
Prior, current period gross write-offs | 0 | 0 |
Revolving Loans Amortized Cost Basis | 204,835 |  | 210,480
Revolving Loans Amortized Cost Basis, current period gross write-offs | 0 | 0 |
Revolving Loans Converted To Term | 0 |  | 0
Revolving Loans Converted To Term, current period gross write-offs | 0 |  | 0
Loans receivable | 204,835 |  | 210,480
Total, current period gross write-offs | 0 |  | 0
Commercial and industrial loans | CCBX Other Commercial and Industrial Loans | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 0 |  | 0
2023, current period gross write-offs | 0 | 0 |
2025 | 0 |  | 15
2022, current period gross write-offs | 0 | 18 |
2024 | 0 |  | 11,910
2021, current period gross write-offs | 0 | 5,164 |
2023 | 7,918 |  | 1,988
2020, current period gross write-offs | 1,372 | 817 |
2022 | 1,214 |  | 0
2019, current period gross write-offs | 213 | 4 |
Prior | 1 |  | 2
Prior, current period gross write-offs | 0 | 4 |
Revolving Loans Amortized Cost Basis | 15,505 |  | 5,251
Revolving Loans Amortized Cost Basis, current period gross write-offs | 520 | 816 |
Revolving Loans Converted To Term | 0 |  | 0
Revolving Loans Converted To Term, current period gross write-offs | 0 |  | 0
Loans receivable | 24,638 |  | 19,166
Total, current period gross write-offs | 2,105 |  | 6,823
Real Estate Portfolio Segment | Residential real estate loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 4,225 |  | 29,962
2023, current period gross write-offs | 0 | 0 |
2025 | 16,396 |  | 24,678
2022, current period gross write-offs | 0 | 0 |
2024 | 11,282 |  | 35,497
2021, current period gross write-offs | 0 | 0 |
2023 | 23,648 |  | 34,525
2020, current period gross write-offs | 0 | 0 |
2022 | 27,806 |  | 23,262
2019, current period gross write-offs | 0 | 0 |
Prior | 79,081 |  | 25,146
Prior, current period gross write-offs | 0 | 13 |
Revolving Loans Amortized Cost Basis | 36,686 |  | 28,809
Revolving Loans Amortized Cost Basis, current period gross write-offs | 0 | 0 |
Revolving Loans Converted To Term | 406 |  | 414
Revolving Loans Converted To Term, current period gross write-offs | 0 |  | 0
Loans receivable | 199,530 |  | 202,293
Total, current period gross write-offs | 0 |  | 13
Real Estate Portfolio Segment | Residential real estate loans | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 0 |  | 0
2023, current period gross write-offs | 0 | 0 |
2025 | 0 |  | 0
2022, current period gross write-offs | 0 | 0 |
2024 | 0 |  | 0
2021, current period gross write-offs | 0 | 0 |
2023 | 0 |  | 0
2020, current period gross write-offs | 0 | 0 |
2022 | 0 |  | 0
2019, current period gross write-offs | 0 | 0 |
Prior | 0 |  | 0
Prior, current period gross write-offs | 0 | 0 |
Revolving Loans Amortized Cost Basis | 323,352 |  | 262,107
Revolving Loans Amortized Cost Basis, current period gross write-offs | 2,217 | 4,923 |
Revolving Loans Converted To Term | 1,521 |  | 1,952
Revolving Loans Converted To Term, current period gross write-offs | 0 |  | 0
Loans receivable | 324,873 |  | 264,059
Total, current period gross write-offs | 2,217 |  | 4,923
Consumer and other loans: |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 28 |  | 2,526
2023, current period gross write-offs | 7 | 29 |
2025 | 278 |  | 32
2022, current period gross write-offs | 0 | 15 |
2024 | 86 |  | 7,394
2021, current period gross write-offs | 0 | 0 |
2023 | 24 |  | 0
2020, current period gross write-offs | 0 | 0 |
2022 | 7,239 |  | 206
2019, current period gross write-offs | 0 | 0 |
Prior | 2,895 |  | 2,710
Prior, current period gross write-offs | 0 | 0 |
Revolving Loans Amortized Cost Basis | 210 |  | 1,204
Revolving Loans Amortized Cost Basis, current period gross write-offs | 0 | 0 |
Revolving Loans Converted To Term | 0 |  | 0
Revolving Loans Converted To Term, current period gross write-offs | 0 |  | 0
Loans receivable | 10,760 |  | 14,072
Total, current period gross write-offs | 7 |  | 44
Consumer and other loans: | Credit cards | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 0 |  | 0
2023, current period gross write-offs | 0 | 0 |
2025 | 0 |  | 0
2022, current period gross write-offs | 0 | 0 |
2024 | 0 |  | 0
2021, current period gross write-offs | 0 | 0 |
2023 | 0 |  | 0
2020, current period gross write-offs | 0 | 0 |
2022 | 0 |  | 0
2019, current period gross write-offs | 0 | 0 |
Prior | 0 |  | 0
Prior, current period gross write-offs | 0 | 0 |
Revolving Loans Amortized Cost Basis | 753,149 |  | 622,653
Revolving Loans Amortized Cost Basis, current period gross write-offs | 52,538 | 109,468 |
Revolving Loans Converted To Term | 22 |  | 28
Revolving Loans Converted To Term, current period gross write-offs | 0 |  | 0
Loans receivable | 753,171 |  | 622,681
Total, current period gross write-offs | 52,538 |  | 109,468
Consumer and other loans: | Other Consumer and Other Loans | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 378,007 |  | 395,346
2023, current period gross write-offs | 1,061 | 9,522 |
2025 | 230,659 |  | 172,598
2022, current period gross write-offs | 16,735 | 36,940 |
2024 | 113,712 |  | 78,468
2021, current period gross write-offs | 14,318 | 23,660 |
2023 | 52,067 |  | 22,922
2020, current period gross write-offs | 6,924 | 7,840 |
2022 | 15,178 |  | 1,000
2019, current period gross write-offs | 1,366 | 734 |
Prior | 624 |  | 99
Prior, current period gross write-offs | 149 | 2 |
Revolving Loans Amortized Cost Basis | 128,532 |  | 21,275
Revolving Loans Amortized Cost Basis, current period gross write-offs | 15,270 | $ 17,220 |
Revolving Loans Converted To Term | 0 |  | 0
Revolving Loans Converted To Term, current period gross write-offs | 0 |  | 0
Loans receivable | 918,779 |  | 691,708
Total, current period gross write-offs | 55,823 |  | 95,918
Performing Financial Instruments | Total CCBX Loans | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 374,985 |  | 393,010
2025 | 226,658 |  | 168,743
2024 | 110,076 |  | 86,598
2023 | 58,254 |  | 24,007
2022 | 16,110 |  | 874
Prior | 590 |  | 91
Revolving Loans Amortized Cost Basis | 1,369,114 |  | 1,075,212
Revolving Loans Converted To Term | 1,543 |  | 1,980
Loans receivable | 2,157,330 |  | 1,750,515
Performing Financial Instruments | Commercial and industrial loans | Capital call lines | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 0 |  | 0
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 204,835 |  | 210,480
Revolving Loans Converted To Term | 0 |  | 0
Loans receivable | 204,835 |  | 210,480
Performing Financial Instruments | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 0 |  | 0
2025 | 0 |  | 15
2024 | 0 |  | 11,546
2023 | 7,696 |  | 1,903
2022 | 1,174 |  | 0
Prior | 1 |  | 2
Revolving Loans Amortized Cost Basis | 15,195 |  | 4,919
Revolving Loans Converted To Term | 0 |  | 0
Loans receivable | 24,066 |  | 18,385
Performing Financial Instruments | Real Estate Portfolio Segment | Residential real estate loans | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 0 |  | 0
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 321,906 |  | 260,146
Revolving Loans Converted To Term | 1,521 |  | 1,952
Loans receivable | 323,427 |  | 262,098
Performing Financial Instruments | Consumer and other loans: | Credit cards | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 0 |  | 0
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 699,402 |  | 578,684
Revolving Loans Converted To Term | 22 |  | 28
Loans receivable | 699,424 |  | 578,712
Performing Financial Instruments | Consumer and other loans: | Other Consumer and Other Loans | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 374,985 |  | 393,010
2025 | 226,658 |  | 168,728
2024 | 110,076 |  | 75,052
2023 | 50,558 |  | 22,104
2022 | 14,936 |  | 874
Prior | 589 |  | 89
Revolving Loans Amortized Cost Basis | 127,776 |  | 20,983
Revolving Loans Converted To Term | 0 |  | 0
Loans receivable | 905,578 |  | 680,840
Nonperforming Financial Instruments | Total CCBX Loans | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 3,022 |  | 2,336
2025 | 4,001 |  | 3,870
2024 | 3,636 |  | 3,780
2023 | 1,731 |  | 903
2022 | 282 |  | 126
Prior | 35 |  | 10
Revolving Loans Amortized Cost Basis | 56,259 |  | 46,554
Revolving Loans Converted To Term | 0 |  | 0
Loans receivable | 68,966 |  | 57,579
Nonperforming Financial Instruments | Commercial and industrial loans | Capital call lines | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 0 |  | 0
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 0 |  | 0
Revolving Loans Converted To Term | 0 |  | 0
Loans receivable | 0 |  | 0
Nonperforming Financial Instruments | Commercial and industrial loans | CCBX Other Commercial and Industrial Loans | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 0 |  | 0
2025 | 0 |  | 0
2024 | 0 |  | 364
2023 | 222 |  | 85
2022 | 40 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 310 |  | 332
Revolving Loans Converted To Term | 0 |  | 0
Loans receivable | 572 |  | 781
Nonperforming Financial Instruments | Real Estate Portfolio Segment | Residential real estate loans | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 0 |  | 0
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 1,446 |  | 1,961
Revolving Loans Converted To Term | 0 |  | 0
Loans receivable | 1,446 |  | 1,961
Nonperforming Financial Instruments | Consumer and other loans: | Credit cards | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 0 |  | 0
2025 | 0 |  | 0
2024 | 0 |  | 0
2023 | 0 |  | 0
2022 | 0 |  | 0
Prior | 0 |  | 0
Revolving Loans Amortized Cost Basis | 53,747 |  | 43,969
Revolving Loans Converted To Term | 0 |  | 0
Loans receivable | 53,747 |  | 43,969
Nonperforming Financial Instruments | Consumer and other loans: | Other Consumer and Other Loans | CCBX Loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
2026 | 3,022 |  | 2,336
2025 | 4,001 |  | 3,870
2024 | 3,636 |  | 3,416
2023 | 1,509 |  | 818
2022 | 242 |  | 126
Prior | 35 |  | 10
Revolving Loans Amortized Cost Basis | 756 |  | 292
Revolving Loans Converted To Term | 0 |  | 0
Loans receivable | $ 13,201 |  | $ 10,868

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