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Allowance for Loan and Lease Losses - Credit Quality Indicators by Class of Residential Real Estate (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Originated Loans and Leases |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | $ 1,362,489 | $ 1,314,210
Originated Loans and Leases | Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 1,352,701 | 1,306,211
Originated Loans and Leases | Nonperforming |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 9,788 | 7,999
Originated Loans and Leases | Residential real estate | Residential Home Equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 208,459 | 212,812
Originated Loans and Leases | Residential real estate | Residential Mortgages |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 1,083,802 | 1,039,040
Originated Loans and Leases | Residential real estate | Performing | Residential Home Equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 206,675 | 211,275
Originated Loans and Leases | Residential real estate | Performing | Residential Mortgages |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 1,076,032 | 1,032,932
Originated Loans and Leases | Residential real estate | Nonperforming | Residential Home Equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 1,784 | 1,537
Originated Loans and Leases | Residential real estate | Nonperforming | Residential Mortgages |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 7,770 | 6,108
Originated Loans and Leases | Consumer and other | Consumer Indirect |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 12,663 | 12,144
Originated Loans and Leases | Consumer and other | Consumer Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 57,565 | 50,214
Originated Loans and Leases | Consumer and other | Performing | Consumer Indirect |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 12,508 | 11,866
Originated Loans and Leases | Consumer and other | Performing | Consumer Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 57,486 | 50,138
Originated Loans and Leases | Consumer and other | Nonperforming | Consumer Indirect |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 155 | 278
Originated Loans and Leases | Consumer and other | Nonperforming | Consumer Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 79 | 76
Acquired Loans and Leases |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 42,394 | 51,854
Acquired Loans and Leases | Performing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 39,876 | 49,136
Acquired Loans and Leases | Nonperforming |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 2,518 | 2,718
Acquired Loans and Leases | Residential real estate | Residential Home Equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 21,149 | 28,444
Acquired Loans and Leases | Residential real estate | Residential Mortgages |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 20,484 | 22,645
Acquired Loans and Leases | Residential real estate | Performing | Residential Home Equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 19,735 | 26,840
Acquired Loans and Leases | Residential real estate | Performing | Residential Mortgages |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 19,380 | 21,531
Acquired Loans and Leases | Residential real estate | Nonperforming | Residential Home Equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 1,414 | 1,604
Acquired Loans and Leases | Residential real estate | Nonperforming | Residential Mortgages |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 1,104 | 1,114
Acquired Loans and Leases | Consumer and other | Consumer Indirect |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 0 | 0
Acquired Loans and Leases | Consumer and other | Consumer Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 761 | 765
Acquired Loans and Leases | Consumer and other | Performing | Consumer Indirect |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 0 | 0
Acquired Loans and Leases | Consumer and other | Performing | Consumer Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 761 | 765
Acquired Loans and Leases | Consumer and other | Nonperforming | Consumer Indirect |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | 0 | 0
Acquired Loans and Leases | Consumer and other | Nonperforming | Consumer Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans and Leases, gross | $ 0 | $ 0

X
- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References No definition available. + Details
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