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Loans and Allowance for Credit Losses (Details 2) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Recorded investment in loans: |  |
Loans individually evaluated for impairment | $ 46,931 | $ 30,191
Loans collectively evaluated for impairment | 6,797,741 | 6,381,337
Net loans | 6,844,672 | 6,411,528
Commercial [Member] |  |
Recorded investment in loans: |  |
Loans individually evaluated for impairment | 27,370 | 8,726
Loans collectively evaluated for impairment | 1,466,207 | 1,367,213
Net loans | 1,493,577 | 1,375,939
Income Producing - Commercial Real Estate [Member] |  |
Recorded investment in loans: |  |
Loans individually evaluated for impairment | 9,404 | 10,192
Loans collectively evaluated for impairment | 3,180,506 | 3,036,902
Net loans | 3,189,910 | 3,047,094
Owner Occupied - Commercial Real Estate - [Member] |  |
Recorded investment in loans: |  |
Loans individually evaluated for impairment | 5,312 | 5,501
Loans collectively evaluated for impairment | 857,850 | 749,943
Net loans | 863,162 | 755,444
Real Estate Mortgage - Residential [Member] |  |
Recorded investment in loans: |  |
Loans individually evaluated for impairment | 1,236 | 478
Loans collectively evaluated for impairment | 103,628 | 103,879
Net loans | 104,864 | 104,357
Construction - Commercial And Residential [Member] |  |
Recorded investment in loans: |  |
Loans individually evaluated for impairment | 3,030 | 4,709
Loans collectively evaluated for impairment | 1,101,133 | 1,027,123
Net loans | 1,104,163 | 1,031,832
Home Equity [Member] |  |
Recorded investment in loans: |  |
Loans individually evaluated for impairment | 487 | 494
Loans collectively evaluated for impairment | 86,038 | 92,770
Net loans | 86,525 | 93,264
Other Consumer [Member] |  |
Recorded investment in loans: |  |
Loans individually evaluated for impairment | 92 | 91
Loans collectively evaluated for impairment | 2,379 | 3,507
Net loans | $ 2,471 | $ 3,598

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