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Loans - Troubled Debt Restructurings that Defaulted Subsequent to Modifications Occurring Within Previous Twelve Months, Disaggregated by Loan Class (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 SecurityLoan | Jun. 30, 2012 SecurityLoan | Jun. 30, 2013 SecurityLoan | Jun. 30, 2012 SecurityLoan
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Loans | 6 | 19 | 7 | 20
Recorded Investment | $ 481 | $ 1,951 | $ 1,755 | $ 1,992
Commercial and industrial loans [Member] | Unsecured [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Loans | 4 | 6 | 4 | 7
Recorded Investment | 311 | 636 | 311 | 677
Commercial and industrial loans [Member] | Secured by real estate [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Loans |  |  | 1 |
Recorded Investment |  |  | 1,274 |
Commercial and industrial loans [Member] | Commercial lines of credit [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Loans |  | 1 |  | 1
Recorded Investment |  | 273 |  | 273
Commercial and industrial loans [Member] | SBA loans [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Loans | 2 | 12 | 2 | 12
Recorded Investment | $ 170 | $ 1,042 | $ 170 | $ 1,042

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- Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953682-111524 + Details
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- Definition Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953682-111524 + Details
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