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Allowance for Loan and Lease Losses - Average Recorded Investment and Interest Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Originated Loans and Leases |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment, With no related allowance | $ 12,848 | $ 12,691 | $ 12,610 | $ 12,238
Interest Income Recognized, With no related allowance | 0 | 0 | 0 | 0
Average Recorded Investment, With related allowance | 1,981 | 1,244 | 911 | 977
Interest Income Recognized, With related allowance | 0 | 0 | 0 | 0
Total Average Recorded Investment | 14,829 | 13,935 | 13,521 | 13,215
Total Interest Income Recognized | 0 | 0 | 0 | 0
Total Acquired Loans |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Total Average Recorded Investment | 3,471 | 3,572 | 3,468 | 3,983
Total Interest Income Recognized | 0 | 0 | 0 | 0
Commercial and Industrial | Originated Loans and Leases | Consumer Other |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment, With no related allowance | 1,505 | 2,963 | 2,123 | 2,370
Interest Income Recognized, With no related allowance | 0 | 0 | 0 | 0
Average Recorded Investment, With related allowance | 273 | 1,200 | 154 | 955
Interest Income Recognized, With related allowance | 0 | 0 | 0 | 0
Commercial and Industrial | Total Acquired Loans | Consumer Other |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment, With no related allowance | 29 | 289 | 28 | 235
Interest Income Recognized, With no related allowance | 0 | 0 | 0 | 0
Commercial real estate | Originated Loans and Leases | Consumer Other |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment, With no related allowance | 7,380 | 5,705 | 6,509 | 6,006
Interest Income Recognized, With no related allowance | 0 | 0 | 0 | 0
Average Recorded Investment, With related allowance | 1,708 | 44 | 757 | 22
Interest Income Recognized, With related allowance | 0 | 0 | 0 | 0
Commercial real estate | Total Acquired Loans | Consumer Other |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment, With no related allowance | 857 | 1,504 | 834 | 1,613
Interest Income Recognized, With no related allowance | 0 | 0 | 0 | 0
Commercial real estate | Total Acquired Loans | Construction |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment, With no related allowance |  |  | 0 | 0
Interest Income Recognized, With no related allowance |  |  | 0 | 0
Residential real estate | Originated Loans and Leases | Home equity |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment, With no related allowance | 3,963 | 4,023 | 3,978 | 3,862
Interest Income Recognized, With no related allowance | 0 | 0 | 0 | 0
Residential real estate | Total Acquired Loans | Home equity |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment, With no related allowance | 2,585 | 1,779 | 2,606 | 2,135
Interest Income Recognized, With no related allowance | $ 0 | $ 0 | $ 0 | $ 0

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