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Allowance for Credit Losses and Credit Quality of Loans, Average Recorded Investments on Loans Specifically Evaluated for Impairment and Interest Income Recognized (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2019
Average Recorded Investment and Interest Income Recognized [Abstract] |  |
Average recorded investment | $ 18,806 | $ 20,126
Interest income recognized | 228 | 662
Originated Loans [Member] |  |
Average Recorded Investment and Interest Income Recognized [Abstract] |  |
Average recorded investment | 18,806 | 20,126
Interest income recognized | 228 | 662
Originated Loans [Member] | Commercial Loans [Member] |  |
Average Recorded Investment and Interest Income Recognized [Abstract] |  |
Average recorded investment | 3,671 | 4,979
Interest income recognized | 37 | 110
Originated Loans [Member] | Commercial Loans [Member] | C&I [Member] |  |
Average Recorded Investment and Interest Income Recognized [Abstract] |  |
Average recorded investment | 115 | 291
Interest income recognized | 0 | 1
Originated Loans [Member] | Commercial Loans [Member] | CRE [Member] |  |
Average Recorded Investment and Interest Income Recognized [Abstract] |  |
Average recorded investment | 2,554 | 3,577
Interest income recognized | 30 | 91
Originated Loans [Member] | Commercial Loans [Member] | Business Banking [Member] |  |
Average Recorded Investment and Interest Income Recognized [Abstract] |  |
Average recorded investment | 1,002 | 1,111
Interest income recognized | 7 | 18
Originated Loans [Member] | Consumer Loans [Member] |  |
Average Recorded Investment and Interest Income Recognized [Abstract] |  |
Average recorded investment | 7,506 | 7,719
Interest income recognized | 98 | 300
Originated Loans [Member] | Consumer Loans [Member] | Indirect Auto [Member] |  |
Average Recorded Investment and Interest Income Recognized [Abstract] |  |
Average recorded investment | 213 | 201
Interest income recognized | 3 | 9
Originated Loans [Member] | Consumer Loans [Member] | Direct [Member] |  |
Average Recorded Investment and Interest Income Recognized [Abstract] |  |
Average recorded investment | 7,293 | 7,518
Interest income recognized | 95 | 291
Originated Loans [Member] | Residential Real Estate [Member] |  |
Average Recorded Investment and Interest Income Recognized [Abstract] |  |
Average recorded investment | 7,629 | 7,428
Interest income recognized | $ 93 | $ 252

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