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Loans and Allowance for Credit Losses (Aging of Past Due Financing Receivables) (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 4,617,719 | $ 2,556,107
Non-accrual Current Loans | $ 5,606 | $ 1,908
Percent of total loans, nonaccrual | 0.10% | 0.10%
Percent of total loans, total loans | 100.00% | 100.00%
Loans, at fair value | $ 9,302 | $ 8,437
Financial Asset Acquired with Credit Deterioration |  |
Financing Receivable, Past Due [Line Items] |  |
Loans |  | $ 26,642
Percent of total loans, total loans |  | 1.00%
Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 4,598,092 | $ 2,512,635
Percent of total loans, Current |  | 98.30%
Percent of total loans, accrual | 0.996 |
Total past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 14,021 | $ 14,922
Percent of total loans, total past due | 0.30% | 0.60%
30‑59 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 5,613 | $ 11,164
Percent of total loans, total past due | 0.10% | 0.40%
60‑89 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 3,480 | $ 1,917
Percent of total loans, total past due | 0.10% | 0.10%
90 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 2,149 |
Percent of total loans, total past due | 0.00% |
90 days past due and not accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 2,779 | $ 1,841
Percent of total loans, total past due | 0.00% | 0.10%
Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 328,750 | $ 246,319
Non-accrual Current Loans | 0 | 297
Construction | Financial Asset Acquired with Credit Deterioration |  |
Financing Receivable, Past Due [Line Items] |  |
Loans |  | 650
Construction | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 327,503 | 239,990
Construction | Total past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,247 | 5,382
Construction | 30‑59 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,035 | 4,343
Construction | 60‑89 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 1,015
Construction | 90 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 65 |
Construction | 90 days past due and not accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 147 | 24
Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,439,464 | 810,497
Non-accrual Current Loans | 1,644 | 1,259
Residential real estate | Financial Asset Acquired with Credit Deterioration |  |
Financing Receivable, Past Due [Line Items] |  |
Loans |  | 13,956
Residential real estate | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,431,994 | 787,070
Residential real estate | Total past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 5,826 | 8,212
Residential real estate | 30‑59 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 3,036 | 6,214
Residential real estate | 60‑89 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 250 | 891
Residential real estate | 90 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 871 |
Residential real estate | 90 days past due and not accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,669 | 1,107
Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,283,521 | 1,065,409
Non-accrual Current Loans | 3,117 | 150
Commercial real estate | Financial Asset Acquired with Credit Deterioration |  |
Financing Receivable, Past Due [Line Items] |  |
Loans |  | 11,866
Commercial real estate | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,278,425 | 1,052,314
Commercial real estate | Total past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,979 | 1,079
Commercial real estate | 30‑59 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 785 | 369
Commercial real estate | 60‑89 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 445 | 0
Commercial real estate | 90 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 |
Commercial real estate | 90 days past due and not accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 749 | 710
Commercial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 229,474 | 147,856
Non-accrual Current Loans | 844 | 174
Commercial | Financial Asset Acquired with Credit Deterioration |  |
Financing Receivable, Past Due [Line Items] |  |
Loans |  | 156
Commercial | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 228,527 | 147,511
Commercial | Total past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 103 | 15
Commercial | 30‑59 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 103 | 15
Commercial | 60‑89 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Commercial | 90 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 |
Commercial | 90 days past due and not accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 330,411 | 286,026
Non-accrual Current Loans | 1 | 28
Consumer | Financial Asset Acquired with Credit Deterioration |  |
Financing Receivable, Past Due [Line Items] |  |
Loans |  | 14
Consumer | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 325,699 | 285,750
Consumer | Total past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,711 | 234
Consumer | 30‑59 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 593 | 223
Consumer | 60‑89 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,744 | 11
Consumer | 90 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,160 |
Consumer | 90 days past due and not accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 214 | 0
Credit Cards |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,099 | $ 0
Non-accrual Current Loans | 0 |
Credit Cards | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 5,944 |
Credit Cards | Total past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 155 |
Credit Cards | 30‑59 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 61 |
Credit Cards | 60‑89 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 41 |
Credit Cards | 90 days past due and still accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 53 |
Credit Cards | 90 days past due and not accruing |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 0 |

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