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Acquisitions and FDIC Indemnification Asset (Details Textual) - USD ($) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2017
Business Acquisition [Line Items] |  |
Assets | $ 2,980,935,000 | $ 3,000,668,000
Goodwill | 34,355,000 | 34,355,000
Loans and Leases Receivable, Net of Loans with Deteriorated Credit Quality, Covered | 3,500,000 | $ 4,300,000
First National Bank Of Danville [Member] |  |
Business Acquisition [Line Items] |  |
Reimbursements from the FDIC | 19,400,000 |
Business Aquisition, Loss Sharing Agreement Losses On Assets Threshold | $ 29,000,000 |
Business Acquisition Loss Sharing Agreement Losses In Excess Of Threshold To Be Reimbursed Percentage | 95.00% |
Business Acquisition, Loss Sharing Agreement Losses Up To Threshold To Be Reimbursed Percentage | 80.00% |

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- Definition Represents the percentage of losses on assets acquired under business combination and covered under loss-sharing agreement, to be reimbursed by FDIC, if losses exceed the threshold amount. + References No definition available. + Details
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- Definition Represents the percentage of losses on assets acquired under business combination and covered under loss-sharing agreement, to be reimbursed by FDIC, if losses are up to the threshold amount. + References No definition available. + Details
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- Definition Represents the threshold amount of losses on assets acquired in a business combination to calculate the amount of reimbursement under the loss-sharing agreement. + References No definition available. + Details
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- Definition Loans and Leases Receivable, Net of Loans with Deteriorated Credit Quality, Covered + References No definition available. + Details
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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(11)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of decreases to the indemnification asset due to cash payments received relating to loss sharing agreements with the Federal Deposit Insurance Corporation (FDIC). + References No definition available. + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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