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Allowance for Loan and Lease Losses - Average Recorded Investment and Interest Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Originated Loans and Leases |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment With No Related Allowance | $ 13,650 | $ 11,543 | $ 11,946 | $ 11,850
Interest Income Recognized With No Related Allowance | 0 | 0 | 0 | 0
Average Recorded Investment With Related Allowance | 1,336 | 612 | 803 | 340
Interest Income Recognized With Related Allowance | 0 | 0 | 0 | 0
Total Average Recorded Investment | 14,986 | 12,155 | 12,749 | 12,190
Total Interest Income Recognized | 0 | 0 | 0 | 0
Total Acquired Loans |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment With No Related Allowance | 3,535 | 2,825 | 3,741 | 4,585
Interest Income Recognized With No Related Allowance | 0 | 0 | 0 | 0
Average Recorded Investment With Related Allowance | 37 | 317 | 15 | 287
Interest Income Recognized With Related Allowance | 0 | 0 | 0 | 0
Total Average Recorded Investment | 3,572 | 3,142 |  |
Total Interest Income Recognized | 0 | 0 |  |
Commercial and industrial | Originated Loans and Leases | Other |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment With No Related Allowance | 3,227 | 301 | 2,104 | 334
Interest Income Recognized With No Related Allowance | 0 | 0 | 0 | 0
Average Recorded Investment With Related Allowance | 1,300 | 612 | 789 | 340
Interest Income Recognized With Related Allowance | 0 | 0 | 0 | 0
Commercial and industrial | Total Acquired Loans | Other |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment With No Related Allowance | 270 | 83 | 138 | 66
Interest Income Recognized With No Related Allowance | 0 | 0 | 0 | 0
Average Recorded Investment With Related Allowance | 0 | 50 | 0 | 20
Interest Income Recognized With Related Allowance | 0 | 0 | 0 | 0
Commercial real estate | Originated Loans and Leases | Other |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment With No Related Allowance | 6,407 | 7,614 | 6,084 | 8,031
Interest Income Recognized With No Related Allowance | 0 | 0 | 0 | 0
Average Recorded Investment With Related Allowance | 36 | 0 | 14 | 0
Interest Income Recognized With Related Allowance | 0 | 0 | 0 | 0
Commercial real estate | Total Acquired Loans | Other |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment With No Related Allowance | 1,479 | 1,299 | 1,637 | 2,774
Interest Income Recognized With No Related Allowance | 0 | 0 | 0 | 0
Average Recorded Investment With Related Allowance | 37 | 267 | 15 | 267
Interest Income Recognized With Related Allowance | 0 | 0 | 0 | 0
Commercial real estate | Total Acquired Loans | Construction |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment With No Related Allowance | 0 | 0 | 0 | 51
Interest Income Recognized With No Related Allowance | 0 | 0 | 0 | 0
Residential real estate | Originated Loans and Leases | Home equity |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment With No Related Allowance | 4,016 | 3,628 | 3,758 | 3,485
Interest Income Recognized With No Related Allowance | 0 | 0 | 0 | 0
Residential real estate | Total Acquired Loans | Home equity |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |
Average Recorded Investment With No Related Allowance | 1,786 | 1,443 | 1,966 | 1,694
Interest Income Recognized With No Related Allowance | $ 0 | $ 0 | 0 | 0
Average Recorded Investment With Related Allowance |  |  | 3,756 | 4,872
Interest Income Recognized With Related Allowance |  |  | $ 0 | $ 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://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 Reference 2: 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 + Details
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