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Loans and Leases (Narrative) (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans held for sale | $ 98,500 | $ 124,800
total remaining discount | 45,973 | 64,727
Loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Interest receivable | 88,100 | 107,700
PCD Loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Remaining discount | 32,623 | 45,254
Non-PCD Loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums | 54,534 | 50,217
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Purchase Discount Remaining | 13,350 | 19,473
Non-PCD Loans | SBA-PPP |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums | (39,372) | 41,064
Non-PCD Loans | Other Portfolio |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums | $ (15,162) | $ 9,153

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