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Loans - Summary of Interest Foregone on Impaired Loans (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
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Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Receivables [Abstract] |  |  |  |
Interest income that would have been recognized had impaired loans performed in accordance with their original terms | $ 1,058 | $ 1,382 | $ 3,183 | $ 4,315
Less: Interest income recognized on impaired loans | (900) | (1,111) | (2,722) | (3,456)
Interest foregone on impaired loans | $ 158 | $ 271 | $ 461 | $ 859

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- Definition Loans and leases receivable impaired interest income not recognized. + References No definition available. + Details
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- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 + Details
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