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Loans - Nonaccrual Loans and Loans Past Due over 90 Days Still Accruing Interest by Class of Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | $ 14,809 | $ 14,262
Past Due Over 90 Days Still on Accrual | 550 | 887
Commercial, industrial, and agricultural |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 3,994 | 2,076
Past Due Over 90 Days Still on Accrual | 443 | 487
Commercial mortgages |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 5,299 | 6,329
Past Due Over 90 Days Still on Accrual | 0 | 53
Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 4,779 | 5,187
Past Due Over 90 Days Still on Accrual | 62 | 299
Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 737 | 670
Past Due Over 90 Days Still on Accrual | 0 | 43
Credit Cards |  |
Financing Receivable, Past Due [Line Items] |  |
Nonaccrual | 0 | 0
Past Due Over 90 Days Still on Accrual | $ 45 | $ 5

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