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Loans - Summary of Average of Impaired Loans and Related Interest Income by Loan Portfolio Class (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Financing Receivable, Impaired [Line Items] |  |  |  |
Impaired Loans with Allowance: Average Recorded Investment | $ 1,949 | $ 186 | $ 1,739 | $ 124
Impaired Loans with Allowance: Interest Income | 0 | 0 | 0 | 0
Impaired Loans with No Allowance: Average Recorded Investment | 9,480 | 10,671 | 9,844 | 10,611
Impaired Loans with No Allowance: Interest Income | 124 | 109 | 253 | 232
Commercial and industrial |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Impaired Loans with Allowance: Average Recorded Investment | 1,156 | 0 | 1,085 | 0
Impaired Loans with Allowance: Interest Income | 0 | 0 | 0 | 0
Impaired Loans with No Allowance: Average Recorded Investment | 1,101 | 1,440 | 1,115 | 1,451
Impaired Loans with No Allowance: Interest Income | 0 | 0 | 0 | 0
Commercial real estate |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Impaired Loans with Allowance: Average Recorded Investment | 416 | 0 | 0 | 0
Impaired Loans with Allowance: Interest Income | 0 | 0 | 0 | 0
Impaired Loans with No Allowance: Average Recorded Investment | 8,144 | 8,446 | 8,346 | 8,359
Impaired Loans with No Allowance: Interest Income | 123 | 105 | 213 | 223
Commercial real estate construction |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Impaired Loans with Allowance: Average Recorded Investment | 0 | 0 | 277 | 0
Impaired Loans with Allowance: Interest Income | 0 | 0 | 0 | 0
Impaired Loans with No Allowance: Average Recorded Investment | 0 | 337 | 100 | 349
Impaired Loans with No Allowance: Interest Income | 0 | 0 | 25 | 0
Residential mortgage |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Impaired Loans with Allowance: Average Recorded Investment | 377 | 186 | 377 | 124
Impaired Loans with Allowance: Interest Income | 0 | 0 | 0 | 0
Impaired Loans with No Allowance: Average Recorded Investment | 235 | 448 | 283 | 452
Impaired Loans with No Allowance: Interest Income | $ 1 | $ 4 | $ 15 | $ 9

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- Definition Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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 + Details
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