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Intangible Assets And Goodwill - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items] |
Weighted-average life | 7 years 4 months 24 days
Customer Related Intangibles [Member] |
Finite-Lived Intangible Assets [Line Items] |
Weighted-average life | 9 years 8 months 12 days
Core deposit intangibles [Member] |
Finite-Lived Intangible Assets [Line Items] |
Weighted-average life | 6 years 7 months 6 days
Mortgage servicing intangibles [Member] |
Finite-Lived Intangible Assets [Line Items] |
Weighted-average life | 3 years 3 months 18 days

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

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration