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Fair Value Information - Additional Information (Detail) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |  |
Fair value assets transfers from Level 1 to Level 2 | $ 0 | $ 0
Fair value assets transfers from Level 2 to Level 1 | $ 0 | $ 0
Percentage of cost to sale of non-covered impaired loans and non-covered other real estate owned | 8.00% |
Minimum [Member] |  |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |  |
Term of interest rate swap contracts by the counterparty, years | 3 years |
Maximum [Member] |  |
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] |  |
Term of interest rate swap contracts by the counterparty, years | 30 years |

X
- Definition Percentage of cost to sale of non-covered impaired loans and non-covered other real estate owned. + References No definition available. + Details
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- Definition Term of interest rate swap contracts by counter party. + References No definition available. + Details
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- Definition Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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