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Loans and Leases (Recorded Investment, By Class, In Loans And Leases On Nonaccrual Status And Loans And Leases Greater Than 90 Days Past Due And Still Accruing) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Jan. 01, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing | $ 191,483 | $ 168,717 |
Loans and leases greater than 90 days and accruing | 5,862 |  |
Non-PCI Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing |  |  | $ 114,946
Loans and leases greater than 90 days and accruing |  |  | 3,291
Non-PCI Loans | Commercial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing | 43,322 | 42,407 | 42,407
Loans and leases greater than 90 days and accruing | 4,312 |  | 1,094
Non-PCI Loans | Commercial | Construction and land development |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing | 1,661 | 4,281 | 4,281
Loans and leases greater than 90 days and accruing | 0 |  | 0
Non-PCI Loans | Commercial | Mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing |  |  | 29,733
Loans and leases greater than 90 days and accruing |  |  | 0
Non-PCI Loans | Commercial | Commercial and industrial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing | 10,626 | 7,685 | 7,365
Loans and leases greater than 90 days and accruing | 540 |  | 1,094
Non-PCI Loans | Commercial | Other commercial real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing |  |  | 708
Loans and leases greater than 90 days and accruing |  |  | 0
Non-PCI Loans | Commercial | Other |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing |  |  | 320
Loans and leases greater than 90 days and accruing |  |  | 0
Non-PCI Loans | Commercial | Mortgage Receivable, Owner Occupied |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing | 23,103 | 24,476 |
Loans and leases greater than 90 days and accruing | 3,625 |  |
Non-PCI Loans | Commercial | Mortgage Receivable, Non-Owner Occupied |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing | 7,932 | 5,965 |
Loans and leases greater than 90 days and accruing | 147 |  |
Non-PCI Loans | Consumer Portfolio Segment |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing | 93,222 | 72,539 | 72,539
Loans and leases greater than 90 days and accruing | 1,195 |  | 2,197
Non-PCI Loans | Consumer Portfolio Segment | Construction and land development |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing | 652 | 2,828 | 2,828
Loans and leases greater than 90 days and accruing | 0 |  | 0
Non-PCI Loans | Consumer Portfolio Segment | Residential Mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing | 66,345 | 44,357 | 44,357
Loans and leases greater than 90 days and accruing | 0 |  | 45
Non-PCI Loans | Consumer Portfolio Segment | Revolving mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing |  |  | 22,411
Loans and leases greater than 90 days and accruing |  |  | 0
Non-PCI Loans | Consumer Portfolio Segment | Consumer |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing |  |  | 2,943
Loans and leases greater than 90 days and accruing |  |  | $ 2,152
Non-PCI Loans | Consumer Portfolio Segment | Revolving Mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing | 22,236 | 22,411 |
Loans and leases greater than 90 days and accruing | 0 |  |
Non-PCI Loans | Consumer Portfolio Segment | Consumer Auto Loan |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing | 3,166 | 2,145 |
Loans and leases greater than 90 days and accruing | 0 |  |
Non-PCI Loans | Consumer Portfolio Segment | Consumer Loan, Other |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing | 823 | 798 |
Loans and leases greater than 90 days and accruing | 1,195 |  |
PCD Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing | 54,939 | 53,771 |
Loans and leases greater than 90 days and accruing | 355 |  |
PCD Loans | Cumulative Effect, Period of Adoption, Adjustment |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccruing | $ 24,900 | $ 47,000 |

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