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Loans And Allowance For Credit Losses (Summary of Activity in the Allowance for Credit Losses) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024 | Mar. 31, 2025
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Credit Loss, Beginning Balance |  | $ 160,465 |  | $ 162,395 | $ 162,395 |
Provision for credit losses on loans | $ 7,919 | 7,849 | $ 23,014 | 14,796 |  |
Loans charged off | 12,025 | 11,868 | 25,318 | 23,033 |  |
Recoveries on Loans | 2,335 | 2,111 | 4,822 | 4,399 |  |
Net loan charge-offs (recoveries) | 9,690 | 9,757 | 20,496 | 18,634 |  |
Allowance for Credit Loss, Ending Balance |  | 158,557 |  | 158,557 |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 165,260 |  | 165,260 |  | 162,742 | $ 167,031
Liability for Unfunded Lending Commitments, Beginning Balance | 18,327 | 23,086 | 18,935 | 25,246 | 25,246 |
Provision for credit losses on unfunded lending commitments | (2,322) | (2,381) | (2,930) | (4,541) |  |
Liability for Unfunded Lending Commitments, Ending Balance | 16,005 | 20,705 | 16,005 | 20,705 | 18,935 |
ALLOWANCE FOR CREDIT LOSSES ON LOANS AND LIABILITY FOR UNFUNDED LENDING COMMITMENTS | 181,265 | 179,262 | 181,265 | 179,262 |  |
Commercial Portfolio Segment [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Credit Loss, Beginning Balance | 106,700 | 105,464 | 106,769 | 108,201 | 108,201 |
Provision for credit losses on loans | 185 | 2,367 | 539 | (488) |  |
Loans charged off | 495 | 850 | 1,221 | 1,166 | 2,035 |
Recoveries on Loans | 464 | 236 | 767 | 670 |  |
Net loan charge-offs (recoveries) | 31 | 614 | 454 | 496 |  |
Allowance for Credit Loss, Ending Balance | 106,854 | 107,217 | 106,854 | 107,217 | 106,769 |
Liability for Unfunded Lending Commitments, Beginning Balance | 17,047 | 21,636 | 17,887 | 23,909 | 23,909 |
Provision for credit losses on unfunded lending commitments | (2,276) | (2,273) | (3,116) | (4,546) |  |
Liability for Unfunded Lending Commitments, Ending Balance | 14,771 | 19,363 | 14,771 | 19,363 | 17,887 |
ALLOWANCE FOR CREDIT LOSSES ON LOANS AND LIABILITY FOR UNFUNDED LENDING COMMITMENTS | 121,625 | 126,580 | 121,625 | 126,580 |  |
Personal Banking Portfolio Segment [Member] |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |  |
Allowance for Credit Loss, Beginning Balance | 60,331 | 55,001 | 55,973 | 54,194 | 54,194 |
Provision for credit losses on loans | 7,734 | 5,482 | 22,475 | 15,284 |  |
Loans charged off | 11,530 | 11,018 | 24,097 | 21,867 | 45,236 |
Recoveries on Loans | 1,871 | 1,875 | 4,055 | 3,729 |  |
Net loan charge-offs (recoveries) | 9,659 | 9,143 | 20,042 | 18,138 |  |
Allowance for Credit Loss, Ending Balance | 58,406 | 51,340 | 58,406 | 51,340 | 55,973 |
Liability for Unfunded Lending Commitments, Beginning Balance | 1,280 | 1,450 | 1,048 | 1,337 | 1,337 |
Provision for credit losses on unfunded lending commitments | (46) | (108) | 186 | 5 |  |
Liability for Unfunded Lending Commitments, Ending Balance | 1,234 | 1,342 | 1,234 | 1,342 | $ 1,048 |
ALLOWANCE FOR CREDIT LOSSES ON LOANS AND LIABILITY FOR UNFUNDED LENDING COMMITMENTS | $ 59,640 | $ 52,682 | $ 59,640 | $ 52,682 |  |

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- Definition Amount, after recovery, of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph a -Subparagraph (4) -Publisher SEC Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 + Details
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