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Intangible Assets And Goodwill - Summary of Goodwill By Business Segment (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
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Goodwill [Line Items] |  |  |
Balance at beginning of period | $ 44,545 | $ 44,545 | $ 44,545
Metropolitan Banks [Member] |  |  |
Goodwill [Line Items] |  |  |
Balance at beginning of period |  | 8,078 | 8,078
Community Banks [Member] |  |  |
Goodwill [Line Items] |  |  |
Balance at beginning of period |  | 30,553 | 30,553
Other Financial Services [Member] |  |  |
Goodwill [Line Items] |  |  |
Balance at beginning of period |  | 5,464 | 5,464
Executive, Operations and Support [Member] |  |  |
Goodwill [Line Items] |  |  |
Balance at beginning of period |  | $ 450 | $ 450

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_GoodwillLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration