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Loans, Allowance for Credit Losses and Credit Quality Financing Receivable Past Due (Details) $ in Thousands | Dec. 31, 2021 USD ($) loan | Dec. 31, 2020 USD ($) loan
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Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan | 518 | 301 |
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan | 60 | 25 |
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan | 123 | 82 |
Number of Loans Total Past Due | loan | 701 | 408 |
Total loans | $ 13,587,286 | $ 9,392,866 |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 1 |
Financing Receivable, before Allowance for Credit Loss | 13,540,590 | 9,371,470 |
Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,677 | 9,450 |
Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 37,927 | 4,168 |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 7,092 | 7,778 |
Financial Asset, Past Due |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | $ 46,696 | $ 21,396 |
Commercial And Industrial [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan | 7 | 2 |
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan | 2 | 1 |
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan | 2 | 8 |
Number of Loans Total Past Due | loan | 11 | 11 |
Total loans | $ 1,563,279 | $ 2,103,152 |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0 |
Financing Receivable, before Allowance for Credit Loss | 1,563,279 | 2,103,152 |
Commercial And Industrial [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 252 | 672 |
Commercial And Industrial [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 143 | 318 |
Commercial And Industrial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 24 | 785 |
Commercial And Industrial [Member] | Financial Asset, Not Past Due |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,562,860 | 2,101,377 |
Commercial And Industrial [Member] | Financial Asset, Past Due |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | $ 419 | $ 1,775 |
Commercial Real Estate [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan | 15 | 3 |
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan | 0 | 0 |
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan | 4 | 4 |
Number of Loans Total Past Due | loan | 19 | 7 |
Total loans | $ 7,992,344 | $ 4,173,927 |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0 |
Financing Receivable, before Allowance for Credit Loss | 7,992,344 | 4,173,927 |
Commercial Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Commercial Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 32,845 | 409 |
Commercial Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,339 | 515 |
Commercial Real Estate [Member] | Financial Asset, Not Past Due |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 7,958,160 | 4,173,003 |
Commercial Real Estate [Member] | Financial Asset, Past Due |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | $ 34,184 | $ 924 |
Construction Loans [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan | 0 | 0 |
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan | 0 | 2 |
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan | 0 | 0 |
Number of Loans Total Past Due | loan | 0 | 2 |
Total loans | $ 1,165,457 | $ 553,929 |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0 |
Financing Receivable, before Allowance for Credit Loss | 1,165,457 | 553,929 |
Construction Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 2,794 |
Construction Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Construction Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 0 | 0 |
Construction Loans [Member] | Financial Asset, Not Past Due |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,165,457 | 551,135 |
Construction Loans [Member] | Financial Asset, Past Due |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | $ 0 | $ 2,794 |
Small Business [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan | 11 | 14 |
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan | 6 | 6 |
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan | 4 | 4 |
Number of Loans Total Past Due | loan | 21 | 24 |
Total loans | $ 193,189 | $ 175,023 |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0 |
Financing Receivable, before Allowance for Credit Loss | 193,189 | 175,023 |
Small Business [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 53 | 273 |
Small Business [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 136 | 421 |
Small Business [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 24 | 59 |
Small Business [Member] | Financial Asset, Not Past Due |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 192,976 | 174,270 |
Small Business [Member] | Financial Asset, Past Due |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | $ 213 | $ 753 |
Residential Real Estate [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan | 12 | 12 |
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan | 5 | 8 |
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan | 76 | 27 |
Number of Loans Total Past Due | loan | 93 | 47 |
Total loans | $ 1,604,686 | $ 1,296,183 |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0 |
Financing Receivable, before Allowance for Credit Loss | 1,604,686 | 1,296,183 |
Residential Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 714 | 5,507 |
Residential Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 2,709 | 2,150 |
Residential Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 3,922 | 3,648 |
Residential Real Estate [Member] | Financial Asset, Not Past Due |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,597,341 | 1,284,878 |
Residential Real Estate [Member] | Financial Asset, Past Due |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | $ 7,345 | $ 11,305 |
Home Equity Line of Credit [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan | 15 | 10 |
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan | 6 | 5 |
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan | 21 | 33 |
Number of Loans Total Past Due | loan | 42 | 48 |
Total loans | $ 1,039,611 | $ 1,068,790 |
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 0 |
Home Equity Line of Credit [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 381 | 203 |
Home Equity Line of Credit [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,375 | 733 |
Home Equity Line of Credit [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,671 | 2,633 |
Home Equity Line of Credit [Member] | Financial Asset, Not Past Due |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 1,036,184 | 1,065,221 |
Home Equity Line of Credit [Member] | Financial Asset, Past Due |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | $ 3,427 | $ 3,569 |
Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Number Of Financing Receivables Thirty To Fifty Nine Days Past Due | loan | 458 | 260 | [1]
Number of Financing Receivables Sixty to Eighty Nine Days Past Due | loan | 41 | 3 | [1]
Number Of Financing Receivables Equal To Greater Than Ninety Days | loan | 16 | 6 | [1]
Number of Loans Total Past Due | loan | 515 | 269 | [1]
Total loans | $ 28,720 | $ 21,862 | [1]
Financing Receivable, 90 Days or More Past Due, Still Accruing | 0 | 1 | [1]
Financing Receivable, before Allowance for Credit Loss | 28,720 | 21,862 |
Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 277 | 1 | [1]
Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 719 | 137 | [1]
Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 112 | 138 | [1]
Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | 27,612 | 21,586 | [1]
Consumer Portfolio Segment [Member] | Financial Asset, Past Due |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Financing Receivable, before Allowance for Credit Loss | $ 1,108 | $ 276 | [1]
[1] | Other consumer portfolio is inclusive of deposit account overdrafts recorded as loan balances.

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