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Loans - Collateral Dependent Loans, Individually Evaluated for Allowance for Credit Loss (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Dec. 31, 2021
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Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Total collateral dependent loans, amortized cost | $ 6,179,522 |  | $ 5,928,933 |  |  |
Total collateral dependent loans, related allowance | 78,666 | $ 77,362 | 65,917 | $ 59,678 | $ 56,077 | $ 47,547
Collateral Pledged |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Collateral dependent loans with allowance, amortized allowance | 14,006 |  | 8,053 |  |  |
Collateral dependent loans with allowance, related allowance | 5,079 |  | 1,412 |  |  |
Collateral dependent loans with no related allowance, amortized cost | 26,526 |  | 20,905 |  |  |
Total collateral dependent loans, amortized cost | 40,532 |  | 28,958 |  |  |
Total collateral dependent loans, related allowance | 5,079 |  | 1,412 |  |  |
Commercial and industrial |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Total collateral dependent loans, amortized cost | 2,459,358 |  | 3,025,074 |  |  |
Total collateral dependent loans, related allowance | 34,641 | 33,197 | 40,785 | 35,588 | 33,305 | 31,622
Commercial and industrial | Collateral Pledged |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Collateral dependent loans with allowance, amortized allowance | 11,991 |  | 6,330 |  |  |
Collateral dependent loans with allowance, related allowance | 4,794 |  | 1,101 |  |  |
Collateral dependent loans with no related allowance, amortized cost | 44 |  | 3,164 |  |  |
Total collateral dependent loans, amortized cost | 12,035 |  | 9,494 |  |  |
Total collateral dependent loans, related allowance | 4,794 |  | 1,101 |  |  |
Commercial real estate |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Total collateral dependent loans, amortized cost | 1,842,455 |  | 1,753,360 |  |  |
Total collateral dependent loans, related allowance | 23,102 | 21,598 | 19,754 | 19,566 | 18,351 | 13,198
Commercial real estate | Collateral Pledged |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Collateral dependent loans with allowance, amortized allowance | 710 |  | 796 |  |  |
Collateral dependent loans with allowance, related allowance | 210 |  | 189 |  |  |
Collateral dependent loans with no related allowance, amortized cost | 4,400 |  | 7,487 |  |  |
Total collateral dependent loans, amortized cost | 5,110 |  | 8,283 |  |  |
Total collateral dependent loans, related allowance | 210 |  | 189 |  |  |
Commercial real estate | Non-owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Total collateral dependent loans, amortized cost | 767,135 |  |  |  |  |
Commercial real estate | Non-owner occupied | Collateral Pledged |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Collateral dependent loans with allowance, amortized allowance | 96 |  | 115 |  |  |
Collateral dependent loans with allowance, related allowance | 22 |  | 36 |  |  |
Collateral dependent loans with no related allowance, amortized cost | 4,086 |  | 2,033 |  |  |
Total collateral dependent loans, amortized cost | 4,182 |  | 2,148 |  |  |
Total collateral dependent loans, related allowance | 22 |  | 36 |  |  |
Commercial real estate | Owner occupied |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Total collateral dependent loans, amortized cost | 631,352 |  |  |  |  |
Commercial real estate | Owner occupied | Collateral Pledged |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Collateral dependent loans with allowance, amortized allowance | 614 |  | 681 |  |  |
Collateral dependent loans with allowance, related allowance | 188 |  | 153 |  |  |
Collateral dependent loans with no related allowance, amortized cost | 126 |  | 5,256 |  |  |
Total collateral dependent loans, amortized cost | 740 |  | 5,937 |  |  |
Total collateral dependent loans, related allowance | 188 |  | 153 |  |  |
Commercial real estate | Construction and land |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Total collateral dependent loans, amortized cost | 329,433 |  |  |  |  |
Commercial real estate | Construction and land | Collateral Pledged |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Collateral dependent loans with allowance, amortized allowance | 0 |  | 0 |  |  |
Collateral dependent loans with allowance, related allowance | 0 |  | 0 |  |  |
Collateral dependent loans with no related allowance, amortized cost | 188 |  | 198 |  |  |
Total collateral dependent loans, amortized cost | 188 |  | 198 |  |  |
Total collateral dependent loans, related allowance | 0 |  | 0 |  |  |
Residential real estate |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Total collateral dependent loans, amortized cost | 1,059,074 |  | 1,106,793 |  |  |
Total collateral dependent loans, related allowance | 13,157 | 14,959 | 2,963 | 2,617 | 2,418 | 836
Residential real estate | Collateral Pledged |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Collateral dependent loans with allowance, amortized allowance | 1,304 |  | 836 |  |  |
Collateral dependent loans with allowance, related allowance | 74 |  | 34 |  |  |
Collateral dependent loans with no related allowance, amortized cost | 19,250 |  | 9,779 |  |  |
Total collateral dependent loans, amortized cost | 20,554 |  | 10,615 |  |  |
Total collateral dependent loans, related allowance | 74 |  | 34 |  |  |
Consumer |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Total collateral dependent loans, amortized cost | 37,681 |  | 43,706 |  |  |
Total collateral dependent loans, related allowance | 702 | 854 | 352 | 333 | 318 | 235
Consumer | Collateral Pledged |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Collateral dependent loans with allowance, amortized allowance | 1 |  | 91 |  |  |
Collateral dependent loans with allowance, related allowance | 1 |  | 88 |  |  |
Collateral dependent loans with no related allowance, amortized cost | 0 |  | 0 |  |  |
Total collateral dependent loans, amortized cost | 1 |  | 91 |  |  |
Total collateral dependent loans, related allowance | 1 |  | 88 |  |  |
Other |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Total collateral dependent loans, amortized cost | 178,110 |  |  |  |  |
Total collateral dependent loans, related allowance | 1,423 | $ 1,248 | 399 | $ 144 | $ 147 | $ 112
Other | Collateral Pledged |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Collateral dependent loans with allowance, amortized allowance | 0 |  | 0 |  |  |
Collateral dependent loans with allowance, related allowance | 0 |  | 0 |  |  |
Collateral dependent loans with no related allowance, amortized cost | 2,832 |  | 475 |  |  |
Total collateral dependent loans, amortized cost | 2,832 |  | 475 |  |  |
Total collateral dependent loans, related allowance | $ 0 |  | $ 0 |  |  |

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