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Goodwill and Other Intangible Assets (Schedule of Other Intangible Assets) (Detail) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | $ 15,476 | $ 45,906
Accumulated Amortization | (8,700) | (37,106)
Net Intangible Assets | 6,776 | 8,800
Core Deposits [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | 9,300 | 39,410
Accumulated Amortization | (4,002) | (32,324)
Net Intangible Assets | 5,298 | 7,086
Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | 6,102 | 5,771
Accumulated Amortization | (4,692) | (4,214)
Net Intangible Assets | 1,410 | 1,557
Noncompete Agreements [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Intangible Assets | 74 | 725
Accumulated Amortization | (6) | (568)
Net Intangible Assets | $ 68 | $ 157

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + 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 Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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