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Loans - Impaired Financing Receivables with Related and not Related Allowances (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
With no related allowance recorded: |  |
Average Recorded Investment, Total | $ 17,366 | $ 19,491
Interest Income Recognized, Total | 157 | 99
Cash Basis Interest Recognized, Total | 157 | 99
Commercial, industrial, and agricultural |  |
With an allowance recorded: |  |
Average Recorded Investment | 2,158 | 1,884
Interest Income Recognized | 38 | 22
Cash Basis Interest Recognized | 38 | 22
With no related allowance recorded: |  |
Average Recorded Investment | 3,376 | 4,600
Interest Income Recognized | 54 | 46
Cash Basis Interest Recognized | 54 | 46
Commercial mortgages |  |
With an allowance recorded: |  |
Average Recorded Investment | 7,267 | 9,234
Interest Income Recognized | 40 | 18
Cash Basis Interest Recognized | 40 | 18
With no related allowance recorded: |  |
Average Recorded Investment | 4,065 | 3,753
Interest Income Recognized | 18 | 13
Cash Basis Interest Recognized | 18 | 13
Residential real estate |  |
With an allowance recorded: |  |
Average Recorded Investment | 0 | 0
Interest Income Recognized | 0 | 0
Cash Basis Interest Recognized | 0 | 0
With no related allowance recorded: |  |
Average Recorded Investment | 500 | 0
Interest Income Recognized | 7 | 0
Cash Basis Interest Recognized | $ 7 | $ 0

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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5258-111524 + Details
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