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Premises and Equipment - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items] | |||
| Depreciation and amortization expense | $ 2.1 | $ 2.2 | $ 2.3 |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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