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Summary of Significant Accounting Policies - Summary of Useful Lives for Assets (Detail)
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12 Months Ended |
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Dec. 31, 2012
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Leasehold Improvements [Member]
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| Property, Plant and Equipment [Line Items] | |
| Premises and equipment useful life | Term of Lease or Useful Life, Whichever is Shorter |
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Software [Member]
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| Property, Plant and Equipment [Line Items] | |
| Premises and equipment useful life | 3 years |
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Minimum [Member] | Building and Improvements [Member]
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| Property, Plant and Equipment [Line Items] | |
| Premises and equipment useful life | 10 years |
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Minimum [Member] | Furniture and Equipment [Member]
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| Property, Plant and Equipment [Line Items] | |
| Premises and equipment useful life | 3 years |
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Maximum [Member] | Building and Improvements [Member]
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| Property, Plant and Equipment [Line Items] | |
| Premises and equipment useful life | 30 years |
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Maximum [Member] | Furniture and Equipment [Member]
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| Property, Plant and Equipment [Line Items] | |
| Premises and equipment useful life | 7 years |
| X | ||||||||||
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- Definition
Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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- Definition
Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
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