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Loans and Allowance for Loan Losses - Additional Information (Detail) (USD $) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2014 Segment | Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Number of portfolio segments | 8 |
Related party loans and commitments | $ 3,300,000 | $ 3,600,000
New loans to parties | 0 | 1,700,000
Repayments of loan | 300,000 | 600,000
Accrued interest on loans, discontinued amount | 4,828,000 | 10,565,000
Accrued interest on loans | 100,000 | 600,000
Interest income actually recorded | 0 | 100,000
Accruing loans past due 90 days or more amounted | 1,500,000 | 1,700,000
Trouble Debt restructuring Modified period term | 6 months |
Period of repayment performance under the modified loan terms | 6 months |
Non-accruing loans restructured and remained on nonaccrual status | 3,400,000 | 5,700,000
Repayments of loans | 1,500,000 | 2,000,000
Troubled debt restructuring evaluated impairment | 500,000 | 500,000
Allowance for loans losses | 100,000 | 800,000
Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Percentage of loan portfolio | 70.80% | 69.20%
Minimum [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan amount threshold for impairment analysis | $ 500,000 |

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- Definition Impaired financing receivable interest income accrual method, accrued interest on loans. + References No definition available. + Details
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- Definition Amount of allowance for credit losses related to receivables which had been measured under a general allowance for credit losses methodology that are now identified as troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 65 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7484272&loc=SL7484277-172609 + Details
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