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Allowance for Loan and Lease Losses - Recorded Investment on Impaired Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Originated Loans and Leases |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded investment with no related allowance | $ 7,303 | $ 11,837
Unpaid principal balance with no related allowance | 7,844 | 11,932
Recorded investment with related allowance | 6,864 | 513
Unpaid principal balance with related allowance | 6,864 | 532
Related Allowance | 3,762 | 441
Recorded investment | 14,167 | 12,350
Unpaid principal balance | 14,708 | 12,464
Originated Loans and Leases | Commercial and industrial | Other |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded investment with no related allowance | 183 | 1,246
Unpaid principal balance with no related allowance | 271 | 1,250
Recorded investment with related allowance | 5,183 | 513
Unpaid principal balance with related allowance | 5,183 | 532
Related Allowance | 3,365 | 441
Originated Loans and Leases | Commercial real estate | Other |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded investment with no related allowance | 3,205 | 6,626
Unpaid principal balance with no related allowance | 3,405 | 6,633
Recorded investment with related allowance | 1,681 | 0
Unpaid principal balance with related allowance | 1,681 | 0
Related Allowance | 397 | 0
Originated Loans and Leases | Residential real estate | Home equity |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded investment with no related allowance | 3,915 | 3,965
Unpaid principal balance with no related allowance | 4,168 | 4,049
Acquired Loans and Leases |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded investment with no related allowance | 3,438 | 3,421
Unpaid principal balance with no related allowance | 3,652 | 3,554
Recorded investment with related allowance | 0 | 50
Unpaid principal balance with related allowance | 0 | 50
Related Allowance | 0 | 25
Recorded investment | 3,438 | 3,471
Unpaid principal balance | 3,652 | 3,604
Acquired Loans and Leases | Commercial and industrial | Other |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded investment with no related allowance | 32 | 226
Unpaid principal balance with no related allowance | 32 | 226
Recorded investment with related allowance | 0 | 50
Unpaid principal balance with related allowance | 0 | 50
Related Allowance | 0 | 25
Acquired Loans and Leases | Commercial real estate | Other |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded investment with no related allowance | 842 | 1,372
Unpaid principal balance with no related allowance | 924 | 1,474
Acquired Loans and Leases | Residential real estate | Home equity |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded investment with no related allowance | 2,564 | 1,823
Unpaid principal balance with no related allowance | $ 2,696 | $ 1,854

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