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Loans and Allowance for Credit Losses (Details 2) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Recorded investment in loans: |  |
Loans individually evaluated for impairment | $ 30,191 | $ 34,471
Loans collectively evaluated for impairment | 6,381,337 | 5,643,422
Net loans | 6,411,528 | 5,677,893
Commercial [Member] |  |
Recorded investment in loans: |  |
Loans individually evaluated for impairment | 8,726 | 10,437
Loans collectively evaluated for impairment | 1,367,213 | 1,190,291
Net loans | 1,375,939 | 1,200,728
Income Producing - Commercial Real Estate [Member] |  |
Recorded investment in loans: |  |
Loans individually evaluated for impairment | 10,192 | 15,057
Loans collectively evaluated for impairment | 3,036,902 | 2,494,460
Net loans | 3,047,094 | 2,509,517
Owner Occupied - Commercial Real Estate - [Member] |  |
Recorded investment in loans: |  |
Loans individually evaluated for impairment | 5,501 | 2,093
Loans collectively evaluated for impairment | 749,943 | 638,777
Net loans | 755,444 | 640,870
Real Estate Mortgage - Residential [Member] |  |
Recorded investment in loans: |  |
Loans individually evaluated for impairment | 478 | 241
Loans collectively evaluated for impairment | 103,879 | 152,507
Net loans | 104,357 | 152,748
Construction - Commercial And Residencial [Member] |  |
Recorded investment in loans: |  |
Loans individually evaluated for impairment | 4,709 | 6,517
Loans collectively evaluated for impairment | 1,027,123 | 1,052,052
Net loans | 1,031,832 | 1,058,569
Home Equity [Member] |  |
Recorded investment in loans: |  |
Loans individually evaluated for impairment | 494 |
Loans collectively evaluated for impairment | 92,770 | 105,096
Net loans | 93,264 | 105,096
Other Consumer [Member] |  |
Recorded investment in loans: |  |
Loans individually evaluated for impairment | 91 | 126
Loans collectively evaluated for impairment | 3,507 | 10,239
Net loans | $ 3,598 | $ 10,365

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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 + Details
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